A Single Arm, Phase I/II Trial of Neoadjuvant Androgen Deprivation, Darolutamide, and Ipatasertib in Men With Localized, High Risk Prostate Cancer Big Ten Cancer Research Consortium BTCRC-GU19-404
Phase: PHASE1
Conditions: Castrate Resistant Prostate Cancer
Sponsor: David VanderWeele

  
Clinical Study Protocol 
 
 
 
 
BTCRC-GU19-404 
A Single Arm, Phase I/II Trial of Neoadjuvant Androgen Deprivation, Darolutamide, and 
Ipatasertib in Men with Localized, High Risk Prostate Cancer 
Big Ten Cancer Research Consortium BTCRC-GU19-404 
 
Sponsor Investigator 
David J. VanderWeele, MD, PhD 
Assistant Professor, Hematology and Oncology 
Robert H. Lurie Comprehensive Cancer Center of Northwestern University 
Northwestern University Feinberg School of Medicine 
676 N St Clair Street, Suite 850 
Chicago, IL  60611 
312-926-2413 
david.vanderweele@northwestern.edu 
 
Co-Investigators 
Robert H. Lurie Comprehensive Cancer Center of Northwestern University: 
Sarah Fenton, MD, PhD 
sarah.fenton@northwestern.edu 
Gregory B Auffenberg, MD, MS 
gregory.auffenberg@northwestern.edu 
 
Ronald Reagan UCLA Medical Center: 
Huihui Ye, MD, MS 
HYe@mednet.ucla.edu 
 
Statistician 
Borko Jovanovic, MS, PhD 
Robert H. Lurie Comprehensive Cancer Center of Northwestern University 
 
Trial Management 
Big Ten CRC Administrative Headquarters at Hoosier Cancer Research Network, Inc. 
7676 Interactive Way, Suite 120 
Indianapolis, IN 46278 
 
Trial Support
Genentech, Inc. 
(ML41744) 
Bayer Healthcare Pharmaceuticals Inc. 
(IIR-US-00093)
 
Investigational New Drug (IND) Number 
153351 
 
Initial Protocol Version Date: 21AUG2020 
 
Protocol Amendment Version Date:  
12NOV2020 (FDA only) 
20NOV2020 
 

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PROTOCOL SIGNATURE PAGE 
 
A Single Arm, Phase I/II Trial of Neoadjuvant Androgen Deprivation, Darolutamide, and 
Ipatasertib in Men with Localized, High Risk Prostate Cancer 
 
 
VERSION DATE:  20NOV2020 
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ethical principles stated in the latest version of the Declaration of Helsinki, the applicable guidelines for 
good clinical practices, whichever provides the greater protection of the individual.  I will accept the 
monitor’s overseeing of the study.  I will promptly submit the protocol to applicable ethical review 
board(s). 
 
 
 
 
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SYNOPSIS 
TITLE 
A Single Arm, Phase I/II Trial of Neoadjuvant Androgen Deprivation, 
Darolutamide, and Ipatasertib in Men with Localized, High Risk Prostate 
Cancer 
PHASE 
Phase I/II 
OBJECTIVES 
Primary Objective: To estimate the efficacy of neoadjuvant androgen 
deprivation, darolutamide, and ipatasertib in men with previously untreated, 
localized, high-risk prostate cancer that is lacking PTEN, as measured by 
the pathological complete response or minimal residual disease 
 
Secondary Objectives: 
 To assess the toxicity profile of androgen deprivation, darolutamide, and 
ipatasertib in men with high risk, localized, hormone sensitive prostate 
cancer that is lacking PTEN 
 To measure 2 year biochemical recurrence-free survival (PSA ≤ 0.2 
ng/mL) in men with high risk, localized, prostate cancer that is lacking 
PTEN 
 To measure rate of PSA0 (undetectable PSA with testosterone recovery 
and no additional therapy) in men with high risk, localized, prostate 
cancer that is lacking PTEN 
 
Exploratory Objectives: 
 To measure rate of unfavorable pathology at prostatectomy in men with 
high risk, localized, hormone sensitive prostate cancer 
 To evaluate PI3K-AKT pathway activity in residual tumor 
 To evaluate proliferation of residual tumor, as measured by Ki67 
 To investigate changes in resistance mechanisms (e.g. hormone receptor 
activity, neuroendocrine differentiation) between pre- and post-
treatment tumors 
 To investigate changes in immunogenicity
STUDY DESIGN 
This is a single arm phase I/II trial of androgen deprivation, darolutamide, 
and ipatasertib given for 6 cycles prior to radical prostatectomy in patients 
with non-metastatic, high risk disease with PTEN loss planning on 
undergoing radical prostatectomy.  To ensure safety, there will be a Phase I 
de-escalation cohort in patients with castration-resistant prostate cancer. 
Evaluation for dose limiting toxicities will continue for 28 days, and blood 
samples will be drawn for pharmacokinetic (PK) studies.   
KEY ELIGIBILITY 
CRITERIA 
For the Phase I de-escalation cohort 
Key inclusion criteria: 
 Histologically confirmed prostate cancer 
 Evaluable disease, with PSA  1.0 ng/ml and/or visible prostate cancer 
on imaging  
 Male and ≥ 18 years of age 
 ECOG performance status of ≤2

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 Castration resistant prostate cancer, defined as biochemical, 
radiographic, and/or clinical progression despite castrate level of 
testosterone (<50 ng/dL) 
 Willing to undergo blood draws to measure PK levels 
 
For the Phase II neoadjuvant cohort 
Key Inclusion Criteria: 
 Histologically-confirmed diagnosis of localized, untreated prostate 
cancer with high-risk features.  High-risk features is defined as: 
o Two or more cores from prostate biopsy that is/are grade group 4 
(Gleason score 4+4=8) or higher, 
OR 
o Stage T3-4, M0, and at least 2 cores from prostate biopsy that are 
grade group 3 (Gleason score 4+3=7) or higher.  
 Sufficient archival tissue (at least 2 cores) available for targeted 
sequencing and immunohistochemistry. 
 Untreated disease and be eligible for (per PI discretion) and planning to 
undergo radical prostatectomy. 
 Measurable PSA 
 Adequate organ and bone marrow function within ≤ 14 days. 
 Male and ≥18 years of age. 
 ECOG performance status of ≤ 1.  
 CT or MRI of abdomen and pelvis and bone scan within ≤90 days of 
treatment. 
 Able to swallow pills 
 Must have 50% or more of tumor tissue evaluated be negative for PTEN 
expression by immunohistochemistry by Ventana SP218 
immunohistochemistry assay on local review (screening evaluation) 
 
Key Exclusion Criteria: 
 Histology of small cell carcinoma prostate cancer.  Adenocarcinoma 
with neuroendocrine features is allowed. 
 Prior treatment of prostate cancer with: second generation androgen 
receptor (AR) inhibitors, other investigational AR inhibitors or CYP17 
enzyme inhibitor, radiation therapy, surgery, or chemotherapy.  First 
generation antiandrogen (e.g. bicalutamide) for 28 days or fewer is 
allowed 
 Distant metastatic disease beyond N1 (regional) lymph nodes on 
conventional baseline imaging studies within ≤ 90 days. 
 Receipt of an investigational agent within ≤ 28 days; or herbal 
medications and marijuana products within ≤ 1 day. 
 Receipt of medications or agents that are likely to alter serum PSA 
levels within ≤ 42 days or 5 half-lives, whichever is shorter.

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STATISTICAL 
CONSIDERATIONS 
In this Simon MiniMax two-stage, single arm, phase I/II trial, we anticipate 
enrolling 17 evaluable PTEN-negative subjects in the Phase II neoadjuvant 
cohort.  The therapy will be considered to be of little interest in the 
neoadjuvant setting if the exceptional response rate is <5% (similar to AR-
targeted therapy alone) and considered active if the exceptional response 
rate is 30%.  The study is designed with 90.5% power to detect the 
difference between the null hypothesis (5% or less response rate) and the 
alternative hypothesis (30%) with one-sided type I error of 0.05.  In the first 
stage nine (9) patients will be recruited.  If one (1) or more responses (pCR 
or MRD) are observed, another eight (8) evaluable patients will be recruited 
for a total of 17 evaluable patients. If 3 or more of 17 responses are 
observed, the study will be deemed a success. To account for 15% attrition, 
we plan to enroll 20 patients.   
 
The Phase I de-escalation cohort will consist of patients with metastatic or 
nonmetastatic castrate resistant prostate cancer, with the expected sample 
size of 6, assuming no more than 1 DLT in the first 6 patients.  However, 
if dose reductions of ipatasertib are required, the sample size could be as 
large as 18.   
 
TOTAL NUMBER 
OF SUBJECTS 
N = 26-38  
(Phase I de-escalation cohort = 6-18; Phase II neoadjuvant cohort = 20) 
ESTIMATED 
ENROLLMENT 
PERIOD 
12 months 
ESTIMATED 
STUDY DURATION 
42 months 
 
 

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TABLE OF CONTENTS 
 
Schema: Phase I De-escalation cohort ........................................................................................................ 8 
Schema: Phase II Neoadjuvant Cohort ....................................................................................................... 9 
1. 
Background and Rationale ................................................................................................................ 10 
1.1 
High risk localized prostate cancer ........................................................................................... 10 
1.2 
Neoadjuvant intensive androgen deprivation ............................................................................ 10 
1.3 
The pan-AKT inhibitor Ipatasertib ........................................................................................... 10 
1.4 
Rationale ................................................................................................................................... 11 
2. 
Study Objectives and Endpoints ....................................................................................................... 11 
2.1 
Objectives ................................................................................................................................. 11 
2.2 
Endpoints .................................................................................................................................. 11 
3. 
Eligibility Criteria ............................................................................................................................. 12 
3.1 
Eligibility Criteria for Phase I de-escalation cohort ................................................................. 12 
3.2 
Eligibility Criteria for Phase II Neoadjuvant Cohort ................................................................ 14 
4. 
Subject Registration .......................................................................................................................... 16 
5. 
Treatment Plan .................................................................................................................................. 16 
5.1 
Phase I de-escalation cohort ...................................................................................................... 17 
5.2 
Phase II Neoadjuvant cohort ..................................................................................................... 18 
5.3 
Ipatasertib, Darolutamide and ADT Administration ................................................................ 19 
5.4 
Concomitant Medications ......................................................................................................... 19 
5.5 
Supportive Care ........................................................................................................................ 21 
6. 
Toxicities and Dose Delays/Dose Modifications .............................................................................. 21 
6.1 
Dose Delays/Dose Modifications ............................................................................................. 23 
6.2 
Darolutamide Dose Modifications ............................................................................................ 23 
6.3 
Ipatasertib Dose Levels for Dose Reductions ........................................................................... 23 
6.4 
Protocol Therapy Discontinuation ............................................................................................ 30 
6.5 
Protocol Discontinuation .......................................................................................................... 31 
7. 
Study Calendar & Evaluations: Phase I De-escalation Cohort ......................................................... 32 
Study Calendar & Evaluations: Phase II Neoadjuvant Cohort ................................................................. 34 
7.1 
Safety Follow-up Evaluations ................................................................................................... 36 
7.2 
Long Term Follow-up Evaluations ........................................................................................... 36 
8. 
Biospecimen Studies and Procedures ............................................................................................... 36 
8.1 
Source and Timing of Biospecimen Collections ...................................................................... 36 
8.2 
Banking of Leftover Biospecimens .......................................................................................... 37 
8.3 
Banking Samples for Future Unspecified Research ................................................................. 37 
8.4 
Confidentiality of Biospecimens ............................................................................................... 38 
9. 
Criteria for Disease Evaluation ......................................................................................................... 38 
9.1 
Phase II Neoadjuvant cohort ..................................................................................................... 38 
9.2 
Phase I De-escalation Cohort .................................................................................................... 38 
9.3 
Prostate Cancer Working Group 3 (PCWG3) response criteria ............................................... 39 
9.4 
Measurable disease ................................................................................................................... 39 
9.5 
Non-measurable Lesions ........................................................................................................... 39 
9.6 
Target Lesions ........................................................................................................................... 39 
9.7 
Non-target Lesions .................................................................................................................... 39 

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9.8 
Evaluation of Target Lesions .................................................................................................... 39 
9.9 
Evaluation of Non-target Lesions ............................................................................................. 40 
9.10 
Evaluation of Best Overall Response ....................................................................................... 40 
9.11 
Imaging biomarkers: Bone ........................................................................................................ 41 
9.12 
Blood-based marker: PSA ......................................................................................................... 41 
10. 
Drug Information .......................................................................................................................... 41 
10.1 
Ipatasertib .................................................................................................................................. 41 
10.2 
Darolutamide............................................................................................................................. 42 
11. 
Adverse Events ............................................................................................................................. 43 
11.1 
Definitions................................................................................................................................. 43 
11.2 
Reporting................................................................................................................................... 46 
12. 
Statistical Methods ........................................................................................................................ 48 
12.1 
Study Design ............................................................................................................................. 48 
12.2 
Endpoints .................................................................................................................................. 48 
12.3 
Sample Size and Accrual .......................................................................................................... 49 
12.4 
Assessment of Safety ................................................................................................................ 49 
12.5 
Assessment of Efficacy ............................................................................................................. 49 
12.6 
Data Analysis Plans .................................................................................................................. 49 
12.7 
Interim Analysis/Criteria for Stopping Study ........................................................................... 50 
13. 
Trial Management ......................................................................................................................... 50 
13.1 
Data and Safety Monitoring Plan (DSMP) ............................................................................... 50 
13.2 
Robert H. Lurie Comprehensive Cancer Center’s Data Safety Monitoring Committee .......... 51 
13.3 
DSMC Review of Safety Data .................................................................................................. 51 
13.4 
Data Quality Oversight Activities ............................................................................................. 51 
13.5 
Compliance with Trial Registration and Results Posting Requirements .................................. 52 
14. 
Data Handling and Record Keeping ............................................................................................. 52 
14.1 
Data Management ..................................................................................................................... 52 
14.2 
Case Report Forms and Submission ......................................................................................... 52 
14.3 
Record Retention ...................................................................................................................... 52 
14.4 
Confidentiality .......................................................................................................................... 53 
14.5 
Publication Policy ..................................................................................................................... 53 
15. 
Ethics............................................................................................................................................. 53 
15.1 
Institutional Review Board (IRB) Approval ............................................................................. 53 
15.2 
Ethical Conduct of the Study .................................................................................................... 54 
15.3 
Informed Consent Process ........................................................................................................ 54 
16. 
Table of abbreviations................................................................................................................... 54 
17. 
References ..................................................................................................................................... 56 

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SCHEMA: PHASE I DE-ESCALATION COHORT 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Metastatic or 
nonmetastatic 
CRPC 
ADT +  
Darolutamide 600 mg BID + 
Ipatasertib 
4 weeks – safety and PKs 
8 additional weeks –  
response evaluation 
Continue until 
progression 
If DLT, dose reduce 
Ipatasertib 1 dose level 
ADT +  
Ipatasertib 
1 week - safety 

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SCHEMA: PHASE II NEOADJUVANT COHORT 
 
 
 
 
High risk, 
nonmetastatic 
prostate cancer  
Evaluate for PTEN 
loss (local review) 
No 
Yes 
ADT + 
Darolutamide + 
Ipatasertib 
(6 cycles) 
Ineligible 
Radical 
Prostatectomy 
Evaluate for 
testosterone 
recovery and 
recurrence 

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1. 
BACKGROUND AND RATIONALE 
1.1 
High risk localized prostate cancer 
It is expected that 31,620 men will die from prostate cancer in the U.S. in 20191. The majority of these 
men will have presented with intermediate or high-risk, localized cancer. While some will be cured, 
many (approximately 30%) will ultimately develop castration-resistant prostate cancer (CRPC) and 
succumb to the disease2. After diagnosis of localized disease, treatment options typically involve radical 
prostatectomy (RP) or radiation therapy (RT) in combination with androgen deprivation therapy (ADT). 
Following RP, 50% or more of patients with high-risk disease will experience a biochemical recurrence 
at 5 years, and approximately 20% will die of their disease within 10-15 years3-5. In a recent evaluation 
of patients with primary Gleason pattern 5 who underwent prostatectomy, patients had a median 
metastasis free survival (MFS) of 86.4 months6. PTEN is lost in approximately 20% of localized 
prostate cancers, making it one of the most common driver mutations7-12. Loss of PTEN expression is 
associated with increased Gleason score, tumor stage, risk of biochemical recurrence after 
prostatectomy, progression and death and risk of metastasis13-19. In the previously referenced study of 
prostate cancer patients with Gleason pattern 5 tumors, when there was PTEN loss (assessed by 
immunohistochemistry (IHC)), the median MFS was 33.9 months, with a hazard ratio of 4.56 on 
multivariable analysis6. As PTEN loss is associated with increased mortality and decreased response to 
therapy there is much interest in using targeted systemic therapy strategies in addition to prostatectomy 
to improve management of this lethal disease at a potentially curable disease state20-23. 
1.2 
Neoadjuvant intensive androgen deprivation 
While there is a proven benefit of using ADT concurrent with radiation therapy, the same benefit has not 
been found when ADT is given prior to radical prostatectomy in the neoadjuvant setting24. Recent 
strategies have employed more intensive androgen deprivation with newer hormonal agents, added in 
addition to standard androgen deprivation, such as abiraterone + prednisone and/or enzalutamide25-26. 
While rates of pathological complete response have remained low with these strategies (<10%), up to 
24% of patients have had minimal residual disease (MRD). Moreover, patients who achieved MRD 
appeared to have better outcomes, as demonstrated by not having biochemical recurrence27. 
Unfortunately, in a recent summary of trials of neoadjuvant intensive androgen deprivation, of the 
patients with PTEN loss, 23 of 23 (100%) were nonresponders28. Other therapies beyond targeting the 
androgen receptor (AR) are needed to manage aggressive prostate cancers with PTEN loss. 
1.3 
The pan-AKT inhibitor Ipatasertib 
Given the frequency of alterations of the PI3K-AKT pathway, whether through loss of function of the 
negative regulator PTEN or by activation of PI3K or AKT , inhibition of this pathway has long been of 
interest for management of diverse cancers8. Ipatasertib was developed as an inhibitor of all isoforms of 
AKT, which is downstream of PTEN and PI3K. A phase I trial demonstrated that it is tolerated well, and 
there is activity in patients with solid tumors29. Phase II trials have met their primary endpoint for 
patients with triple negative breast cancer (when given with paclitaxel) or with advanced prostate cancer 
(given with abiraterone + prednisone)30-31. These studies are the basis for two phase III trials that are on-
going, in breast (IPATunity130, NCT03337724) and prostate cancer (IPATential150, NCT03072238), 
respectively. 
 

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1.4 
Rationale 
In addition to encouraging clinical results from late stage, castration resistant prostate cancer, the 
VanderWeele lab has demonstrated marked antitumor effects with ipatasertib and AR inhibition in 
preclinical studies (under review). These data include two independent patient-derived xenograft models 
of hormone sensitive prostate cancer that demonstrate almost complete inhibition of tumor growth 
(LuCaP 136) or marked tumor regression (LuCaP 147) when ipatasertib is combined with AR-targeted 
therapy. Interestingly, induction of glucocorticoid receptor is very common (88%) in residual tumor 
following neoadjuvant intensive androgen deprivation28. In preclinical models, sensitivity to ipatasertib 
is greatest in models where the glucocorticoid receptor is induced following AR-targeted therapy (under 
review). Together, these data suggest the neoadjuvant setting is a disease state where combined AKT- 
and AR-inhibition is particularly effective. 
 
2. 
STUDY OBJECTIVES AND ENDPOINTS 
2.1 
Objectives 
2.1.1 Primary Objective 
 To estimate the efficacy of neoadjuvant androgen deprivation, darolutamide, and ipatasertib in 
men with previously untreated, localized, high-risk prostate cancer that is lacking PTEN, as 
measured by the pathological complete response or minimal residual disease 
2.1.2 Secondary Objectives 
 To assess the toxicity profile of androgen deprivation, darolutamide, and ipatasertib in men with 
high risk, localized, hormone sensitive prostate cancer that is lacking PTEN 
 To measure 2 year biochemical recurrence-free survival (PSA ≤ 0.2 ng/mL) in men with high 
risk, localized, prostate cancer that is lacking PTEN 
 To estimate rate of PSA0 (undetectable PSA with testosterone recovery and no additional 
therapy) in men with high risk, localized, prostate cancer that is lacking PTEN 
2.1.3 Exploratory/Correlative Objectives 
 To measure rate of unfavorable pathology at prostatectomy in men with high risk, localized, 
hormone sensitive prostate cancer 
 To evaluate PI3K-AKT pathway activity in residual tumor 
 To evaluate proliferation of residual tumor, as measured by Ki67 
 To investigate changes in resistance mechanisms (e.g. hormone receptor activity, neuroendocrine 
differentiation) between pre- and post-treatment tumors 
 To investigate changes in immunogenicity 
2.2 
Endpoints 
2.2.1 Primary Endpoint 
 Combined rate of pathologic complete response (pCR) (defined as absence of pathologic disease 
on hematoxylin and eosin (H&E) stain (ypT0)), or with presence of minimal residual disease (<5 
mm linearly) 

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2.2.2 Secondary Endpoints 
 Grade 3 and 4 toxicities as defined by the NCI Common Terminology Criteria for Adverse 
Events (NCI CTCAE) v5. 
 Two year biochemical recurrence-free survival (PSA ≤ 0.2 ng/mL) 
 Rate of PSA0 (undetectable PSA on local institutions laboratory testing with testosterone 
recovery and no additional therapy) 
 
3. 
ELIGIBILITY CRITERIA 
Approximately 26-38 patients with prostate cancer will be enrolled in this study.  This includes 6-18 
patients in the Phase I de-escalation cohort with metastatic or nonmetastatic castration resistant prostate 
cancer, and 20 patients in the Phase II neoadjuvant cohort with high risk localized or locally advanced 
prostate cancer that is PTEN-null.  
 For the Phase I de-escalation cohort, the patient must have castration resistant prostate cancer 
(metastatic or non-metastatic), as defined by PCWG3.   
 For the Phase II neoadjuvant cohort, the patient must be a candidate for radical prostatectomy at 
the time of enrollment and be planning to undergo this procedure.  The patient must have a 
histologically-confirmed diagnosis of localized, untreated prostate cancer with high risk features 
and must have sufficient archival tissue (at least 2 cores) available for targeted sequencing and 
immunohistochemistry.  At least 50% of the tumor tissue evaluated must be negative for PTEN 
expression by immunohistochemistry on local review. 
3.1 
Eligibility Criteria for Phase I de-escalation cohort 
3.1.1 Phase I Inclusion Criteria 
Subject must meet all of the following applicable inclusion criteria to participate in this study: 
1. 
Histologically confirmed prostate cancer  
2. 
Male and ≥ 18 years of age 
3. 
ECOG performance status of ≤ 2  
4. 
Castration resistant prostate cancer, defined as biochemical, radiographic, and/or clinical 
progression despite castrate level of testosterone (<50 ng/dL).  There is no restriction on prior 
therapies for CRPC. 
5. 
Evaluable disease, with PSA  1.0 ng/ml and/or visible prostate cancer on imaging. 
6. 
Serum testosterone < 50 ng/dL   
7. 
Willing to undergo blood draws to measure PK levels   
8. 
Able to swallow pills 
9. 
Must have ability to understand and the willingness to sign a written informed consent prior to 
receiving a subject ID number. 
10. Unless surgically sterile, sexually active patients must agree to use effective barrier method and 
refrain from sperm donation during the study treatment and for 3 months after the end of study 
treatment.   
11. As determined by the enrolling physician or protocol designee, ability of the subject to 
understand and comply with study procedures for the entire length of the study 

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12. Demonstrate adequate organ function as defined in the table below; all screening labs to be 
obtained within 14 days prior to registration.  
 
System 
Laboratory Value 
Hematological 
Hemoglobin (Hgb)
≥9 g/dL 
Absolute Neutrophil Count (ANC)
≥ 1,500/µL 
Platelet count  
≥100,000/µL 
Renal 
Creatinine 
≤2x upper limit of normal (ULN) 
Hepatic 
Bilirubin 
≤ 1.5 × upper limit of normal (ULN) or  
Gilbert’s syndrome with normal direct bilirubin 
Aspartate aminotransferase (AST) 
≤2.5 × ULN 
Alanine aminotransferase (ALT) 
≤2.5 × ULN 
Blood sugar 
HbA1C 
≤7.5% 
Fasting glucose 
≤150 mg/dL
 
3.1.2 Phase I Exclusion criteria 
Subjects meeting any of the criteria below may not participate in the study: 
1. 
Patients receiving systemic therapy for prostate cancer ≤ 21 days or 5 half-lives (whichever is 
shorter) prior to starting study drug are not eligible.   
NOTE: Patients must continue Androgen Deprivation Therapy, and patients can receive bone 
supportive therapy. 
2. 
Histology of small cell carcinoma prostate cancer 
3. 
Any active infection requiring IV antibiotics 
4. 
Known additional malignancy that has a life-expectancy < 5 years. 
5. 
Clinically significant acute infection requiring systemic antibacterial, antifungal, or antiviral 
therapy including:  
 hepatitis B (known positive HBV surface antigen (HBsAg) result),  
 hepatitis C, or  
 human immunodeficiency virus (positive HIV 1/2 antibodies).   
NOTES: Patients with a past or resolved HBV infection (defined as the presence of hepatitis B 
core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients positive for hepatitis C 
(HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA. 
Subjects with HIV/AIDS with adequate antiviral therapy to control viral load would be 
allowed if they are stable and have been on treatment for ≥ 4 weeks prior to first dose of study 
drug(s). Subjects with viral hepatitis with controlled viral load would be allowed while on 
suppressive antiviral therapy. 
6. 
History of type I or type II diabetes mellitus requiring insulin. 
7. 
Any of the following within 6 months before registration: stroke, myocardial infarction, 
severe/unstable anginal pectoris, coronary/peripheral artery bypass graft, congestive heart 
failure New York Heart Association (NYHA) class III or IV. 
8. 
Congenital long QT syndrome or QTcF > 480 milliseconds 

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9. 
Grade ≥ 2 uncontrolled or untreated hypercholesterolemia (>300 mg/dL) or 
hypertriglyceridemia (>300 mg/dL) 
10. History of or active inflammatory bowel disease (IBD) or active bowel inflammation 
(diverticulitis) 
11. Lung disease: pneumonitis, interstitial lung disease, idiopathic pulmonary fibrosis, cystic 
fibrosis, Aspergillosis, active tuberculosis, or history of opportunistic infections (pneumocystis 
pneumonia or cytomegalovirus pneumonia) 
12. Treatment with strong CYP3A inhibitors or strong CYP3A inducers within 2 weeks or 5 drug-
elimination half-lives, whichever is longer, prior to initiation of study drug 
13. History of allergic reaction to darolutamide or ipatasertib. 
14. Any condition that in the opinion of the investigator would impair the patients’ ability to 
comply with study procedures.   
3.2 
Eligibility Criteria for Phase II Neoadjuvant Cohort 
3.2.1 Phase II Inclusion Criteria 
Subject must meet all of the following applicable inclusion criteria to participate in this study: 
1. Histologically-confirmed diagnosis of localized, untreated prostate cancer with high-risk 
features.  High-risk features is defined as: 
 Two or more cores from prostate biopsy that are grade group 4 (Gleason score 4+4=8) or 
higher, 
OR 
 Stage T3-4 (by clinical exam or MRI), M0, and at least 2 cores from prostate biopsy that are 
grade group 3 (Gleason score 4+3=7) or higher.  
NOTE: Pathology confirmation of malignancy must be performed by the participating site (i.e. 
reports should be issued by the participating site; if a subject’s pathology report was not issued 
by the participating site, archival tissue should be requested by the participating site for internal 
pathology review.) 
2. Sufficient archival tissue (at least 2 cores) available for targeted sequencing and 
immunohistochemistry to evaluate for PTEN loss using the Ventana SP218 
immunohistochemistry assay at the local institution.  
 The tumor evaluated for PTEN expression should be selected based on containing both high 
grade and high volume of tumor content. The slide evaluated for PTEN expression should be 
saved for confirmatory central review. Eligibility is based on local review. 
3. Measurable PSA  
4. Must have PTEN loss per local institution evaluation, defined as 50% or more of tumor tissue 
being negative for PTEN expression on Ventana SP218 immunohistochemistry assay. 
5. Disease must be untreated and subject must be eligible for (per PI discretion) and planning to 
undergo radical prostatectomy. 
6. Male and ≥18 years of age. 
7. ECOG performance status of ≤ 1 within 14 days prior to signing consent.  
8. CT or MRI of abdomen and pelvis and bone scan within ≤90 days prior to starting study drug. 
9. Able to swallow pills 

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10. Must have ability to understand and the willingness to sign a written informed consent prior to 
starting study drug. 
11. Sexually active patients, unless surgically sterile, must agree to use effective barrier method and 
refrain from sperm donation during the study treatment and for 3 months after the end of study 
treatment. 
12. As determined by the enrolling physician or protocol designee, ability of the subject to 
understand and comply with study procedures for the entire length of the study 
13. Demonstrate adequate organ function as defined in the table below; all screening labs to be 
obtained within 14 days prior to registration. 
 
System 
Laboratory Value 
Hematological 
Hemoglobin (Hgb)
≥9 g/dL 
Absolute Neutrophil Count (ANC)
≥ 1,500/µL 
Platelet count  
≥100,000/µL 
Renal 
Creatinine 
≤2x upper limit of normal (ULN) 
Hepatic 
Bilirubin 
≤ 1.5 × upper limit of normal (ULN) or. 
Gilbert’s syndrome with normal direct bilirubin 
Aspartate aminotransferase (AST) 
≤2.5 × ULN 
Alanine aminotransferase (ALT) 
≤2.5 × ULN 
Blood sugar 
HbA1C 
≤7.5%
Fasting glucose 
≤150 mg/dL
 
3.2.2 Phase II Exclusion Criteria 
Subjects meeting any of the criteria below may not participate in the study: 
1. Histology of small cell carcinoma prostate cancer. Adenocarcinoma with neuroendocrine 
features is allowed. 
2. Active infection requiring IV antibiotics 
3. Distant metastatic disease beyond N1 (regional) lymph nodes on conventional baseline imaging 
studies within 90 days prior to signing consent. 
4. Known additional malignancy that has a life-expectancy < 10 years. 
5. Clinically significant acute infection requiring systemic antibacterial, antifungal, or antiviral 
therapy including:  
a. tuberculosis (clinical evaluation that includes clinical history, physical examination, and 
radiographic findings, and TB testing in line with local practice),  
b. hepatitis B (known positive HBV surface antigen (HBsAg) result),  
c. hepatitis C, or  
d. human immunodeficiency virus (positive HIV 1/2 antibodies).   
NOTES: Patients with a past or resolved HBV infection (defined as the presence of hepatitis B 
core antibody [anti-HBc] and absence of HBsAg) are eligible. Patients positive for hepatitis C 
(HCV) antibody are eligible only if polymerase chain reaction is negative for HCV RNA. 
Subjects with HIV/AIDS with adequate antiviral therapy to control viral load would be allowed 

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if they are stable and have been on treatment for ≥ 4 weeks prior to first dose of study drug(s). 
Subjects with viral hepatitis with controlled viral load would be allowed while on suppressive 
antiviral therapy. Testing not required. 
6. Prior treatment of prostate cancer with: second generation androgen receptor (AR) inhibitors, 
other investigational AR inhibitors or CYP17 enzyme inhibitor, radiation therapy, surgery, or 
chemotherapy.  First generation antiandrogen (e.g. bicalutamide) for 28 days or fewer is allowed.   
7. Receipt of an investigational agent within ≤ 28 days prior to registration; or herbal medications 
and marijuana products within ≤ 1 day prior to registration. 
8. Receipt of medications (e.g. finasteride, dutasteride) or agents that are likely to alter serum PSA 
levels within ≤ 42 days or 5 half-lives prior to registration, whichever is shorter. 
9. History of type I or type II diabetes mellitus requiring insulin. 
10. Any of the following within 6 months before registration: stroke, myocardial infarction, 
severe/unstable anginal pectoris, coronary/peripheral artery bypass graft, congestive heart failure 
New York Heart Association (NYHA) class III or IV. 
11. Congenital long QT syndrome or QTcF > 480 milliseconds 
12. Grade ≥ 2 uncontrolled or untreated hypercholesterolemia (>300 mg/dL) or hypertriglyceridemia 
(>300 mg/dL) 
13. History of or active IBD or active bowel inflammation (diverticulitis) 
14. Lung disease: pneumonitis, interstitial lung disease, idiopathic pulmonary fibrosis, cystic 
fibrosis, Aspergillosis, active tuberculosis, or history of opportunistic infections (pneumocystis 
pneumonia or cytomegalovirus pneumonia) 
15. Treatment with strong CYP3A inhibitors or strong CYP3A inducers within 2 weeks or 5 drug-
elimination half-lives, whichever is longer, prior to initiation of study drug 
16. History of allergic reaction to darolutamide or ipatasertib. 
17. Any condition that in the opinion of the investigator would impair the patients’ ability to comply 
with study procedures.   
 
4. 
SUBJECT REGISTRATION 
All subjects must be registered through Big Ten Cancer Research Consortium (Big Ten CRC) 
Administrative Headquarters’(AHQ) electronic data capture (EDC) system. A subject is considered 
registered when an ‘On Study’ date is entered into the EDC system. 
 
Subjects must be registered prior to starting protocol therapy. Subjects must begin therapy within 10 
business days of registration.  
 
5. 
TREATMENT PLAN 
The proposed trial is a single arm, Phase I/II trial looking for an efficacy signal in the Phase II 
neoadjuvant setting in patients with PTEN-null tumors. The active therapy is a combination of androgen 
deprivation therapy, darolutamide, and ipatasertib.  Patients will be treated for 6 cycles prior to 
prostatectomy, since pCR+MRD rate is higher with 6 months of ADT + abiraterone (24%) than 3 
months (4%)24. Since the combination has not been evaluated before, a Phase I de-escalation cohort in 

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patients with castration resistant prostate cancer will be performed to evaluate safety and drug-drug 
interaction.   
5.1 
Phase I de-escalation cohort 
The Phase I de-escalation cohort will enroll 6 patients to assess the safety of ipatasertib and 
darolutamide. Ipatasertib has already been evaluated in combination with the AR pathway inhibitors, 
including phase II30 and phase III trials with abiraterone (NCT03072238) where 400 mg was found to be 
safe. Therefore, patients in dose level 1 will receive the expected final dose of darolutamide 600 mg BID 
and ipatasertib 400 mg daily. Treatment will begin with ipatasertib alone for 7 days (cycle 0). 
Darolutamide will be added at standard dose starting with cycle 1. Subjects will complete an oral drug 
diary to document compliance with self-administration of darolutamide and ipatasertib. 
 
 
Ipatasertib 
(once daily) 
Darolutamide 
(twice daily) 
ADT 
Cycle 0 Days 1-7 
(7 day cycle) 
Monotherapy 
-- 
As per site standards 
Cycle 1 Day 1 
AM dose with PKs
No AM dose.  
PM dose taken after ipatasertib 
monotherapy PKs
As per site standards 
Cycle 1 Day 2+  
 
 
As per site standards 
 
Evaluation for dose limiting toxicities will continue for 28 days after the addition of darolutamide (cycle 
2 day 1), and blood samples will be drawn for pharmacokinetic (PK) studies. If one or fewer patients 
experience a DLT, the trial will advance to the Phase II neoadjuvant cohort. If two or more patients 
experience a DLT at dose level 1, the dose will be reduced to dose level -1 for already enrolled patients 
and another 6 patients will be enrolled to evaluate darolutamide 600 mg BID and ipatasertib 300 mg 
daily. If at least two patients experience a DLT at dose level -1 before all six of the planned patients are 
enrolled the dose of ipatasertib will immediately be reduced to dose level -2 for already enrolled patients 
and another 6 patients will be enrolled to evaluate darolutamide 600 mg BID and ipatasertib 200 mg 
daily. The study will be terminated if there are 2 or more DLTs at dose level -2 and will not proceed to 
phase II. 
 
Dose 
Level 
Ipatasertib 
Darolutamide 
ADT per institutional 
standards 
-2 
200 mg daily 
600 mg BID 
As per site standards 
-1 
300 mg daily  
600 mg BID 
As per site standards 
1 (start) 
400 mg daily  
600 mg BID 
As per site standards 
 
PK evaluations will continue through Cycle 3 Day 1. Enrollment in the Phase II neoadjuvant cohort can 
proceed before PK studies are complete. 
 
Patients will have response evaluated at Cycle 4 Day 1 (+/- evaluation window), including PSA response 
and radiographic response per modified PCWG3. If there is progression on bone scan alone, patients 

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should have confirmatory bone scan at least 6 weeks later. Patients in the Phase I cohort will continue on 
therapy until the time of progression or unacceptable treatment-related toxicity.  Response evaluation 
should continue every 12 weeks (+/- 4 weeks) for two years, and then every 16 weeks (+/- 8 weeks). 
Treatment of bone metastases can sometimes result in a “flare”, with the appearance of progression in 
the setting of clinical response.  If radiologic imaging shows progressive disease (PD) and the patient 
does not have clinical progression, tumor assessment may be repeated by the site ≥4 weeks later in order 
to confirm PD with the option of continuing treatment while awaiting radiologic confirmation of 
progression. If repeat imaging confirms PD, patients will be discontinued from study therapy.  
5.1.1 Definition of Dose Limiting Toxicities (DLTs) 
A DLT is defined as an event not clearly due to the underlying disease or extraneous causes, that occurs 
within the first 28 days of treatment with combination of ipatasertib and darolutamide and meets any of 
the criteria included in the table below. The DLT observation period will end after Cycle 1 has been 
completed and study drugs have been restarted in Cycle 2. NCI CTCAE version 5 will be used for all 
grading. 
 
Toxicity 
DLT Criteria 
Hematology 
Common terminology criteria for adverse events (CTCAE) grade 3 neutropenia 
(neutrophil count decreased) for > 7 days (complete blood count plus differential 
must be measured every 3 days until neutrophil recovery to grade 2 or better)
CTCAE grade 3 thrombocytopenia (platelet count decreased) for > 7 consecutive 
days or with grade > 1 bleeding or requirement for platelet transfusion 
CTCAE grade 4 thrombocytopenia 
Febrile neutropenia (absolute neutrophil count < 1 x109/l, fever > 38.3°C) 
Hepatobiliary 
Total bilirubin ≥ 2.0 x ULN to ≤ 3 x ULN for > 7 consecutive days 
CTCAE grade 3 or 4 total bilirubin (blood bilirubin increased) 
CTCAE grade 3 or grade 4 AST or ALT increased 
Hy’s Law (one of the following): 
 
ALT or AST >8×ULN 
 
ALT or AST >5×ULN for more than 2 weeks 
 
ALT or AST >3×ULN and total bilirubin >2×ULN or INR >1.5 
 
ALT or AST >3×ULN with the appearance of fatigue, nausea, vomiting, right 
upper quadrant pain or tenderness, fever, rash, and/or eosinophilia (>5%)
Non-hematologic 
Any nonhematologic AE ≥ grade 3, with the exceptions of grade 3 nausea, 
vomiting, diarrhea, electrolyte abnormality, constipation, fever, fatigue, or rash in 
which there has been suboptimal prophylaxis or management and that resolves to 
grade ≤ 2 within 72 hours
Drug delay 
Delay in administration of a study drug ≥ 14 days due to toxicity 
5.2 
Phase II Neoadjuvant cohort 
The single arm, two stage Phase II neoadjuvant portion of the trial will examine the recommended dose 
of ipatasertib with darolutamide in the neoadjuvant setting, selected for patients with loss of PTEN by 
IHC. If after 9 evaluable patients there are no patients with exceptional response (defined as pCR or 
MRD), accrual will halt due to lack of efficacy.  Accrual will not pause while the 9th patient is on 
therapy; additional patients may accrue prior to pathologic evaluation of the 9th radical prostatectomy. 
Patients in the Phase II neoadjuvant cohort will continue on therapy for 6 cycles. 

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5.3 
Ipatasertib, Darolutamide and ADT Administration 
Androgen deprivation therapy (ADT) will be determined by the treating physician or designee and 
obtained as per institutional standards. 
 
Drug 
Dose 
Route 
Schedule 
Cycle Length 
ADT (per site 
standards) 
As per site 
standards 
As per site 
standards 
As per site 
standards 
As per site 
standards 
Ipatasertib 
Phase I cohort-
determined dose
oral 
Daily 
28 days 
Darolutamide 
600 mg  
oral 
BID 
 Diaries will be provided to record self-administration of oral study drugs.  
 Darolutamide should be taken with food 
 Each dose of ipatasertib should be taken with a minimum of 3 ounces (90 mL) of fluid. 
Ipatasertib may be taken with or without food.  If a dose is missed (not taken within 8 
hours after the scheduled dosing time), the patient should resume dosing with the next 
scheduled dose.  Missed or vomited doses will not be made up. 
 The AM dose of ipatasertib and darolutamide can be taken together.
5.4 
Concomitant Medications 
5.4.1 Allowed Concomitant Medications 
All treatments the investigator considers necessary for a subject’s welfare may be administered at the 
discretion of the investigator in keeping with the community standards of medical care. 
 
Patients are recommended to use the following therapies during the study: 
 
Prophylaxis use of loperamide is recommended in the first cycle, and as clinically indicated in 
subsequent cycles to prevent diarrhea. Patients who experience diarrhea should be on treatment 
doses of loperamide per the management guidelines provided in Section 6.2.1.1. Patients should be 
educated/reminded to be cognizant of the onset, duration, severity, and frequency of symptoms and 
the medications administered.   
 
In general, investigators should manage a patient’s care with supportive therapies as clinically indicated 
and per institutional practice. 
5.4.2 Cautionary Concomitant Medications 
Ipatasertib Cautionary Therapy 
In vitro data suggest that ipatasertib is metabolized by CYP3A and may be a time-dependent inhibitor of 
CYP3A4. A clinical drugdrug interaction study with midazolam (a sensitive CYP3A substrate) showed 
a 2.2-fold increase in midazolam exposures in presence of steady-state Ipatasertib dosed at 600 mg QD. 
Therefore, sensitive CYP3A substrates with narrow therapeutic window should be avoided. Given that 
ipatasertib is primarily metabolized by CYP3A, there is a high potential for drugdrug interactions of 
ipatasertib with any medication that strongly inhibits or induces CYP3A. Data from a clinical study 
showed that ipatasertib exposures were reduced by approximately 50% when co-administered with 

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enzalutamide, a strong CYP3A inducer. Strong CYP3A inhibitors are expected to increase ipatasertib 
exposures significantly. 
Therefore, the following drugs should be avoided or used with caution.  
 
Strong CYP3A4/5 inhibitors, such as, but not limited to, atazanavir, clarithromycin, indinavir, 
itraconazole, ketoconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, 
troleandomycin, voriconazole, and/or grapefruit juice  
 
Strong CYP3A4/5 inducers, such as, but not limited to, rifampin, carbamazepine, rifapentine, 
phenytoin, phenobarbital, and/or St. John’s wort or hyperforin 
 
CYP3A4/5 substrates with a narrow therapeutic index, such as, but not limited to, alfentanil, 
astemizole, terfenadine, cisapride, cyclosporine, fentanyl, pimozide, quinidine, sirolimus, 
tacrolimus, ergot alkaloids ergotamine, and/or dihydroergotamine 
 
Patients who require short-term use of a strong CYP3A4/5 inhibitor or inducer or use of sensitive 
CYP3A substrates with a narrow therapeutic window for medical treatment (i.e., an alternative 
treatment cannot be used) must exercise caution and all study treatment should be temporarily held 
until at least 7 days after the last dose of these drugs. 
 
Patients are permitted to take moderate inhibitors of CYP3A4 with caution. 
 
Patients should be closely monitored. Refer to the following information for further guidance on 
CYP450drug interactions and a list of common substrates, inhibitors, and inducers: 
Drug Development and Drug Interactions:  Table of Substrates, Inhibitors and Inducers (U.S. Food 
and Drug Administration [FDA]):  
https://www.fda.gov/Drugs/DevelopmentApprovalProcess/DevelopmentResources/DrugInteraction
sLabeling/ucm093664.htm 
 
The above lists of medications are not necessarily comprehensive. The investigator should consult the 
prescribing information when determining whether a concomitant medication can be safely 
administered with study treatment. 
 
Darolutamide Cautionary Therapy 
 
Combined P-gp and Strong or Moderate CYP3A4 Inducer 
Concomitant use of darolutamide with a combined P-gp and strong or moderate CYP3A4 inducer 
decreases darolutamide exposure which may decrease darolutamide activity. Avoid concomitant use 
of darolutamide with combined P-gp and strong or moderate CYP3A4 inducers. 
 
Combined P-gp and Strong CYP3A4 Inhibitors 
Concomitant use of darolutamide with a combined P-gp and strong CYP3A4 inhibitor increases 
darolutamide exposure which may increase the risk of darolutamide adverse reactions. Monitor 
patients more frequently for darolutamide adverse reactions and modify darolutamide dosage as 
needed. 
 
Herbal Therapies 
Concomitant use of herbal therapies is not recommended because their pharmacokinetics, safety 
profiles, and potential drug-drug interactions are generally unknown. However, herbal therapies not 
intended for the treatment of cancer may be used during the study at the discretion of the investigator. 
 

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5.4.3 Prohibited Concomitant Medications 
Prohibited Therapy 
 
Concomitant therapy intended for the treatment of cancer (including, but not limited to, 
chemotherapy, hormonal therapy, immunotherapy, radiotherapy, and herbal therapy) is prohibited 
for various time periods prior to starting study treatment. See Section 3, Eligibility Criteria. 
 
Chronic use of a strong CYP3A4/5 inhibitor or inducer, or sensitive CYP3A substrates with a 
narrow therapeutic window that are deemed not permissible after enrollment. 
 
Prohibited Food 
Use of the following foods are prohibited as described below: 
 
Consumption of grapefruit juice, a potent CYP3A4 enzyme inhibitor, is prohibited during the study 
treatment period and for 10 days after the last dose of study treatment. 
 
Consumption of St. John’s wort, a potent CYP3A4 enzyme inducer, is prohibited for up to 14 days 
prior to and during the study treatment period, and for 10 days after the last dose of study treatment. 
5.5 
Supportive Care 
Diarrhea is a common adverse event associated with ipatasertib treatment. To improve diarrhea 
management and patient experiences, loperamide (2 mg once a day) will be administered daily as 
prophylaxis for diarrhea in the first cycle if allowed by local guidance. If side effects of loperamide are 
not tolerated, doses may be reduced at any time. Investigators are encouraged to continue this dosing for 
the remainder of the study using their discretion based on clinical judgments. 
 
If diarrhea occurs, it should be managed per guidelines in Section 6.2.1.1; upon resolution or when study 
treatment is restarted, loperamide prophylaxis should be considered to resume and continue based on 
clinical judgments (if allowed by local guidance). 
 
6. 
TOXICITIES AND DOSE DELAYS/DOSE MODIFICATIONS 
The NCI Common Terminology Criteria for Adverse Events (CTCAE) v5 will be used to grade adverse 
events.  
 
Subjects enrolled in this study will be evaluated clinically and with standard laboratory tests before and 
at regular intervals during their participation in this study as specified in Study Calendar & Evaluations. 
 
Subjects will be evaluated for adverse events (all grades), serious adverse events, and adverse events 
requiring study drug interruption or discontinuation as specified in Study Calendar & Evaluations.   
 
Risks associated with ipatasertib 
Hyperglycemia, including cases of Grade 3 or Grade 4 hyperglycemia, has been reported in patients 
receiving ipatasertib as monotherapy or ipatasertib in combination with other anticancer drugs or 
hormonal therapy.  Hyperglycemia of any grade, regardless of causality, was reported in 35.3% of 
patients who received ipatasertib as a single agent in the Phase I Study PAM4743g, with Grade 3 
hyperglycemia occurring in 1 patient (2.0%). In the GO27983 study, hyperglycemia of any grade, 
regardless of causality, was reported in 22.6%, 9.1%, and 7.4% of patients in the ipatasertib 400 mg, 200 
mg, and placebo arms, respectively. Grade 3 hyperglycemia occurred in 10.7%, 2.3%, and 2.5% of 
patients in the 400 mg, 200 mg, and placebo arms, respectively.  One patient (1.2%) in the ipatasertib 

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400 mg arm experienced Grade 4 hyperglycemia. There were no other instances of Grade 4 or higher 
hyperglycemia events in any arm. In the GO29227 study, hyperglycemia of any grade, regardless of 
causality, was reported in 9.5% and 3.3% of patients in the ipatasertib 400 mg and placebo arms, 
respectively. There were no reports of Grade 3 hyperglycemia. 
 
GI toxicities such as nausea, vomiting, diarrhea, and stomatitis/oral mucositis have been commonly 
observed in patients receiving ipatasertib as monotherapy or in combination with other anticancer 
drugs.GI toxicities of any grade, regardless of causality, were commonly reported in patients who 
received ipatasertib as a single agent in the Phase I Study PAM4743g, including nausea (78.4%), 
diarrhea (72.5%), vomiting (58.8%), and stomatitis or mucosal inflammation (7.8%). In this study, the 
reported Grade 3 GI toxicities included diarrhea (7.8%), and nausea (2.0%). In the GO27983 study, GI 
toxicities, irrespective of grade or causality (presented by proportion of patients affected in the 
ipatasertib 400 mg, ipatasertib 200 mg, and placebo arms, respectively), included diarrhea (77.4%, 
48.9%, and 24.7%), nausea (53.6%, 35.2%, and 24.7%), vomiting (32.1%, 27.3%, and 14.8%), and oral 
mucositis (6.0%, 3.4%, and 1.2%). The only Grade 3 GI AEs that affected  2 patients, irrespective of 
causality, were diarrhea (13.1%, 2.3%, and 1.2%) and nausea (2.4%, 0%, and 0%). There were no Grade 
4 or 5 events in this category in this study. In the GO29227 study, GI toxicities of any grade, regardless 
of causality, reported in the ipatasertib 400 mg and placebo arms, respectively, included diarrhea (92.1% 
and 20.0% ), nausea (52.4% and 33.3%), vomiting (27.0% and 23.3%), and oral mucositis  (23.8% and 
15.0%). Grade 3 diarrhea occurred in 22.2% of the ipatasertib 400 mg arm and 0% of the placebo arm. 
Grade 3 vomiting was reported in 3.2% and 0% of the ipatasertib 400 mg and placebo arms, 
respectively. With regard to Grade 3 nausea and Grade 3 oral mucositis, there was 1 patient in each arm 
(1.6% and 1.7% in the ipatasertib 400 mg and placebo arms, respectively). There were no Grade 4 or 
Grade 5 diarrhea, nausea, vomiting, or oral mucositis events in any arm. 
 
Rash, primarily manifested as maculo-papular type with or without pruritus, has been commonly 
reported in patients receiving treatment with ipatasertib. Rash-related events of any grade, regardless of 
causality, were reported in 15.7% of patients who received ipatasertib as a single agent in the Phase I 
Study PAM4743g; Grade 3 rash (toxic skin eruption as reported term) was reported in 1 patient (2.0%). 
In the GO27983 study, irrespective of grade or causality, the proportion of patients experiencing a rash-
related event was 23.8%, 9.1%, and 6.2% in the ipatasertib 400 mg, ipatasertib 200 mg, and placebo 
arms, respectively. Of patients in the ipatasertib 400 mg, 200 mg, and placebo arms, 9.5%, 2.3%, and 
0%, experienced Grade 3 rash, respectively. One patient (1.2%) in the ipatasertib 400 mg arm 
experienced a Grade 4 event. There were no other instances of Grade 4 events in this study. In the 
GO29227 study, rash of any grade, regardless of causality, was reported in 30.2% and 30.0% of the 
ipatasertib 400 mg and placebo arms, respectively. There was 1 patient with Grade 3 rash in each arm 
(1.6% and 1.7% in the ipatasertib 400 mg and placebo arms, respectively). There were no cases of Grade 
4 or Grade 5 rash events in any arm. Cases of Grade 3 rash requiring dose interruption and treatment 
with topical or systemic corticosteroids have also been observed from other ongoing ipatasertib studies. 
 
Erythema multiforme: In the blinded Study CO39303, erythema multiforme of any grade regardless of 
causality was reported in 6 (0.5%) patients. Grade 3 erythema multiforme was reported in 5 of these 6 
patients. In the blinded Study CO40016, one Grade 3 event of erythema multiforme was reported. An 
analysis of the first 4 cases of erythema multiforme reported, with a cut off date of 7 June 2018, found 
that the frequency of reported events of erythema multiforme is 4 out of 1051 patients (0.38%) and is a 
higher frequency than the reported global incidence rate of 1.2-6 per million. Published literature 

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suggests a possible causal association between PI3K inhibitors and erythema multiforme. The first dose 
latencies ranged from 9-16 days for these four cases, which is consistent with the literature describing 
drug-induced erythema multiforme. On 1 June 2018 an independent Data Monitoring Committee 
conducted a review of the totality of the safety data (unblinded), including skin toxicity-related events 
and details of the four erythema multiforme cases (from Study CO39303), and concluded that Study 
CO39303 be continued with no modifications to the conduct. Further evaluation and assessment will 
occur after Studies CO39303 and CO40016 are unblinded. 
 
Fatigue or asthenia of any grade, regardless of causality, has been observed in 62.7% of patients 
receiving ipatasertib as a single agent in the Phase I Study PAM4743g, with 5 (9.8%) cases of Grade 3 
asthenia/fatigue reported. In the GO27983 study, asthenia/fatigue of any grade, irrespective of causality, 
was reported in 48.8%, 45.5%, and 43.2% of patients in the ipatasertib 400 mg, 200 mg, and placebo 
arms, respectively. Grade 3 asthenia/fatigue occurred in 9.5%, 5.7%, and 3.7% of patients, respectively, 
as above. There were no cases of Grade 4 or Grade 5 asthenia/fatigue events in any arm. In the 
GO29227 study, asthenia/fatigue of any grade, regardless of causality, was reported in 49.2% and 43.3% 
of the ipatasertib 400 mg and placebo arms, respectively. Grade 3 asthenia/fatigue was reported in 6.3% 
and 6.7% of the ipatasertib 400 mg and placebo arms, respectively. There were no cases of Grade 4 or 
Grade 5 asthenia/fatigue events in any arm. 
 
Refer to the Ipatasertib Investigator’s Brochure for further information regarding the nonclinical and 
clinical safety evaluation of ipatasertib as a single agent and in combination with chemotherapy. 
 
6.1 
Dose Delays/Dose Modifications 
Unless otherwise noted in the dose modification tables below, treatment may be delayed ≤ 28 days from 
the expected day of the next treatment for any reason. If treatment is delayed ≤ 28 days subjects will 
proceed with the next cycle of treatment at the dose level recommended according to the tables below. 
Held or missed doses are not to be made up and will not alter the duration of total therapy prior to 
prostatectomy. 
6.2 
Darolutamide Dose Modifications 
The darolutamide dose may be adjusted as necessary, using discretion based on clinical judgment and 
per local guidance. If a patient experiences a greater than or equal to Grade 3 toxicity or an intolerable 
adverse reaction, withhold dosing or reduce to 300 mg twice daily until symptoms improve. Then the 
treatment may be resumed at a dose of 600 mg twice daily. Dose reduction below 300 mg twice daily is 
not recommended.  
 
Refer to the darolutamide Investigator’s Brochure or package insert for further guidance. 
6.3 
Ipatasertib Dose Levels for Dose Reductions 
 
Dose level 
Dose of Ipatasertib 
Starting Dose 
400 mg daily 
300 mg daily 
200 mg daily 
Dose level (-1) 
300 mg daily 
200 mg daily 
Remove from 
study drugs 

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Dose level (-2) 
200 mg daily 
Remove from 
study drugs
-- 
Dose level (-3) 
Remove from 
study drugs
-- 
-- 
 
If a dose level below that included in the above table is required the subject will be removed from 
protocol mandated treatment and will be followed up per protocol and proceed to prostatectomy. 
6.3.1 
Adverse Event Management Guidelines 
6.3.1.1 Diarrhea Management Guidelines 
Specific guidelines for managing diarrhea to improve safety and tolerability are provided below. In this 
study, all patients should receive loperamide (2 mg oral twice a day or 4 mg once a day) as prophylaxis 
for diarrhea in the first cycle if allowed by local guidance.  Investigators are encouraged to continue 
this dosing for the remainder of the study, and the prophylaxis dose may be adjusted as necessary, 
using their discretion based on clinical judgment and per local guidance.  
 
Treatment modifications for diarrhea (any grade), when it occurs, should be instituted as early as 
possible.  Guidelines for treatment of diarrhea following the prophylactic dose of loperamide (where 
allowed) includes use of loperamide 2 mg every 4 hours or after each loose, watery stool, up to the 
maximum total dose of 16 mg/day or per institutional guidelines and standard of care, including, but 
not limited to, additional therapy with Lomotil (diphenoxylate and atropine), codeine, or octreotide. 
Duration of diarrhea may be minimized by taking ipatasertib with food, avoiding lactose-containing 
foods, and hydrating with 810 glasses per day (~12 oz/glass) of electrolyte-containing clear liquid, 
such as broth or low-calorie drinks. 
 
For diarrhea that persists for more than 5 days, despite treatment with anti-diarrheal agent(s) and/or 
withholding dosing of ipatasertib, gastroenterologists should be consulted to rule out the risk of colitis 
and infection (e.g., obtaining CT images or a stool culture for infectious workup [Clostridium difficile, 
enteric bacteria, cytomegalovirus]). Patients should be educated on the symptoms and importance of 
early reporting of diarrhea to receive instructions of treatment and prevention of dehydration so that 
patients can be promptly and appropriately managed.  
 
Dose of darolutamide should be maintained as tolerated. Dose reductions of ipatasertib will be reduced 
by 100 mg (i.e., 400 to 300 mg, or 300 mg to 200 mg). If Grade ≥ 2 diarrhea persists following dose 
reductions of ipatasertib to 200 mg daily and with maximum treatment for diarrhea, ipatasertib should 
be discontinued. 
 
Severity of Diarrhea 
Management Guideline 
Prevention 
 All patients are recommended to receive loperamide (2 mg BID 
or 4 mg QD) as prophylaxis for diarrhea in the first cycle, if 
allowed by local investigator.  Loperamide dose adjustment may 
be made per investigator discretion.  
 After the first cycle, investigators are encouraged to continue 
this dosing for the remainder of the study using their discretion 
as clinically indicated. 

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Severity of Diarrhea 
Management Guideline 
Grade 1 
Increase of  4 stools per day 
over baseline; mild increase 
in ostomy output compared 
with baseline 
 Continue study drugs at the current dose level. 
 Manage with loperamide 4 mg initially and then 2 mg every 4 
hours or after every unformed stool until after 12-hour diarrhea 
free interval. 
 Dietary modifications, such as avoiding any lactose-containing 
foods and eating small meals. 
 Hydration with 810 glasses per day (~12 oz/glass) of clear 
liquid, such as broth or low-calorie drinks with electrolytes. 
 Upon resolution, loperamide prophylaxis can be considered and 
continues as clinically indicated, if allowed by local guidance.
Grade 2 
Increase of 46 stools per 
day over baseline; moderate 
increase in ostomy output 
compared with baseline 
 Rule out infectious etiology. 
 Manage with loperamide as early as possible 4 mg initially and 
then 2 mg every 4 hours or after every unformed stool until after 
12-hour diarrhea free interval. 
 Dietary modifications, such as avoiding any lactose-containing 
foods and eating small meals.  
 Hydration with 8−10 glasses per day (~12 oz/glass) of clear 
liquid, such as broth or low-calorie drinks with electrolytes. 
 For non-infectious diarrhea lasting more than 48 hours despite 
optimal loperamide treatment, manage with second-line anti-
diarrheal agents, including, but not limited to Lomotil®, 
codeine, or octreotide, or as per institutional guidelines. 
 Interrupt ipatasertib until diarrhea improves to Grade 1 or better.  
Ipatasertib can be resumed at the same dose or one dose lower 
per investigator's evaluation upon improvement to Grade 1 or 
better. 
 Reduce ipatasertib by one (or one additional) dose level for 
recurrent Grade 2 diarrhea. 
 When study treatment is resumed, loperamide prophylaxis 
should also be resumed and continues as clinically indicated, if 
allowed by local guidance.
Grade 3 
Increase of  7 stools per day 
over baseline; incontinence; 
hospitalization indicated; 
severe increase in ostomy 
output compared to baseline; 
limiting self-care ADL 
 Rule out infectious etiology. 
 Treat per Grade 2 management guidelines and supportive care. 
 Interrupt ipatasertib until diarrhea improves to Grade 1 or better. 
Ipatasertib should be reduced by one dose level when treatment 
is restarted. 
 For recurrent Grade 3 diarrhea, reduce ipatasertib dose by one 
additional dose level. 
 When study treatment is resumed, loperamide prophylaxis 
should also be resumed and continues as clinically indicated, if 
allowed by local guidance.

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Severity of Diarrhea 
Management Guideline 
Grade 4 
Life-threatening 
consequences; urgent 
intervention indicated 
 Rule out infectious etiology. 
 Treat per Grade 2 management guidelines and supportive care. 
 Permanently discontinue ipatasertib. 
ADL  activities of daily living; BID  twice a day; QD  once a day. 
6.3.1.2 Fasting Hyperglycemia 
Fasting is defined as abstaining from food and drink (with the exception of water) for at least 8 hours. 
Dose modification guidelines for fasting hyperglycemia attributable to study treatment are outlined 
below and are intended to provide guidance for fasting glucose measurements assessed in the clinic. 
Decisions regarding study treatment should be made on fasting levels drawn in the clinic whenever 
possible. 
 
Home glucose measurements may be used to trigger contact between patient and investigative site team 
and may lead to an unscheduled clinic visit to assess fasting glucose.  Guidance for when to call the 
investigator/site staff (or designated endocrinologist, if applicable) should be provided to patients for 
hypoglycemia (e.g., glucose value under 70 mg/dL) and hyperglycemia (e.g., glucose value over 300 
mg/dL). Alternative thresholds may be selected as clinically indicated per investigator discretion or 
institutional guidance and noted in the source documents. For any patients performing home glucose 
monitoring, the blood glucose log should be reviewed at each clinic visit (and source data retained), 
entry of results into the patient’s eCRF will be limited to values which result in intervention. 
 
In the event of ipatasertib interruption, anti-diabetic medications may need to be held or reduced (per 
investigator judgement) and glucose should be monitored closely to minimize the risk of hypoglycemia. 
 
Severity of Fasting 
Hyperglycemia 
Management Guideline 
Fasting glucose value 
 ULN to 160 mg/dL 
(8.9 mmol/L) 
 Monitor fasting glucose per protocol  
 Consider initiating home glucose monitoring  
Fasting glucose value 
160 to 250 mg/dL 
( 8.913.9 mmol/L) 
 Interruption of ipatasertib until fasting hyperglycemia resolves to 
<160 mg/dL or better. 
 Initiate home glucose monitoring 
 Start oral anti-diabetic medications (e.g., metformin).  
 If patient is already on an oral anti-diabetic medication, the dose 
of ipatasertib should be reduced by one dose level. 
 If the patient previously has not been receiving any oral 
anti-diabetic medication, ipatasertib may be resumed at the 
previous dose level with initiation of oral anti-diabetic 
medication. 
Glucose value 250 to 
500 mg/dL 
(  13.927.8 mmol/L) 
 Interrupt ipatasertib dosing until fasting hyperglycemia resolves 
to <160 mg/dL or better.  
 Initiate home glucose monitoring 
 Treat hyperglycemia as medically appropriate.  Start (or increase 

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dose of) oral anti-diabetic medications (e.g., metformin). 
 Ipatasertib should be reduced by one dose level when treatment is 
restarted. 
 If hyperglycemia w/ a glucose value between 250-500 mg/dL 
recurs, permanently discontinue ipatasertib.   
Glucose value 
 500 mg/dL 
( 27.8 mmol/L); 
life-threatening 
consequences 
 Interrupt ipatasertib dosing until resolution to Grade 1 or better. 
 Treat hyperglycemia as medically appropriate.   
 Initiate home glucose monitoring 
 Start (or increase dose of) oral anti-diabetic medications (e.g., 
metformin). 
 Assess for volume depletion and appropriate intravenous or oral 
hydration. 
 Permanently discontinue ipatasertib.
6.3.1.3 Neutropenia and/or Thrombocytopenia 
Addition of hematopoietic growth factors is allowed. If a dose delay is required as a result of 
neutropenia at any grade, patients should receive prophylactic granulocyte colony-stimulating factor or 
granulocyte-macrophage colony-stimulating factor per institutional standards. Patients should be 
counseled as to the risk of fever and infection and to the importance of contacting their treating 
physician or designee immediately if these conditions occur so that they can be promptly and 
appropriately managed. Dosage modification guidelines for neutropenia and/or thrombocytopenia 
attributable to ipatasertib are outlined below. 
 
Severity of 
Neutropenia and/or 
Thrombocytopenia 
Management Guideline 
Grade 2 
 Ipatasertib may be continued at the original dose.  
Grade 3 
 Ipatasertib should be held until recovery to Grade 1. Please see 
guidelines in this table regarding treatment for ongoing Grade 2 
hematological toxicities.   
o First episode: resume the original dose.  
o Recurrent episode: Ipatasertib should be reduced by one dose 
level when treatment is restarted. If patient has had recurrent 
Grade 3 neutropenia episodes on study, permanently 
discontinue ipatasertib. 
 Following a treatment hold of up to 4 weeks, if recovery to 
Grade 1 or better neutropenia does not occur, discontinue 
ipatasertib.
Febrile neutropenia and 
Grade 4 neutropenia 
 Permanently discontinue ipatasertib treatment. 

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6.3.1.4 Nausea and/or Vomiting 
Dose reductions for nausea and/or vomiting should occur only if the symptoms persist despite a 
minimum of two treatments with adequate (combination) anti-emetic treatment(s), including 
ondansetron and other anti-emetics (i.e., prochlorperazine or metoclopramide per institutional 
guidelines).  
 
Severity of Nausea 
and /or Vomiting 
Management Guideline 
Grade 1 
 Provide supportive care as needed. 
Grade 2 
 Provide maximum supportive care as needed per local 
guidelines, with a minimum of two anti-emetics, including 
ondansetron. 
Grade  3 
 Interrupt ipatasertib until nausea or vomiting resolves to Grade 
2 or better. 
 Provide maximum supportive care per local guidelines, with a 
minimum of two anti-emetics, including ondansetron. 
 If Grade  3 nausea or vomiting recurs, ipatasertib should be 
reduced by one dose level when treatment is restarted.   
6.3.1.5 Rash 
Ipatasertib should be permanently discontinued for rash associated with Stevens-Johnson syndrome, 
toxic epidermal necrolysis, or other suspected severe hypersensitivity or allergic reaction.  Dosage 
modification and symptom management guidelines for skin toxicity attributable to study treatment are 
shown in below. 
 
Severity of Rash 
Management Guideline 
Grade 1 
 Continue study drugs.  
 Consider topical corticosteroids. 
Grade 2 
 Interrupt ipatasertib treatment until resolution to Grade 1 or 
better or the toxicity is no longer clinically significant.  
 Treat rash with topical corticosteroids. 
 Consider treatment of rash with oral corticosteroids. 
Grade 3 
 Interrupt ipatasertib treatment until resolution to Grade 1 or 
better or the toxicity is no longer clinically significant.  
 Treat rash with topical and systemic corticosteroids. 
 Consider dermatological consultation. 
 If the skin toxicity resolves to Grade 1 or better or is no longer 
clinically significant within 28 days, following completion of the 
steroid taper, ipatasertib may be resumed at one dose level below 
the previous dose. 
 If recovery of the skin toxicity to Grade 1 or better does not 
occur or skin toxicity remains clinically significant continuously 
for 4 weeks, or Grade 3 rash recurs, permanently discontinue 
ipatasertib. 

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Severity of Rash 
Management Guideline 
Grade 4 
 Administration of systemic steroids (oral or intravenous) is 
recommended.  Consider dermatological consultation and skin 
biopsy.  Ipatasertib should be permanently discontinued. 
6.3.1.6 Pneumonitis 
Pneumonitis is not known to be causally related to any of the study drugs; however, it has been 
observed with other drugs treating pathways similar to ipatasertib.  Every effort should be made to 
determine the etiology of dyspnea and changes in pulmonary function. 
 
Severity of 
Pneumonitis 
Management Guideline 
Grade 1 
 Continue study drugs. 
 Perform CT scan and PFTs. Repeat CT scan every 8 weeks until a 
return to baseline. 
Grade 2 
 If infectious etiology is ruled out or if improvement is not evident 
with broad spectrum antibiotics, prescribe corticosteroids as 
clinically indicated. 
 Interrupt ipatasertib treatment until improvement to Grade 1 or 
better. Consider resuming ipatasertib at same dose level or one 
dose level below per investigator’s assessment. 
 Perform CT scan and PFTs. Repeat CT scan every 4 weeks until a 
return to baseline. 
 For recurrent Grade 2 pneumonitis, discontinue ipatasertib. 
 Discontinue ipatasertib if recovery to Grade 1 or better is not 
evident within 28 days. 
Grade 3 
 If infectious etiology is ruled out or if improvement is not evident 
with broad spectrum antibiotics, prescribe corticosteroids as 
clinically indicated. 
 Interrupt ipatasertib until improvement to Grade 1 or better. 
Resume ipatasertib at one dose level below previous dose per 
investigator’s assessment. If recovery to Grade 1 or better is not 
evident within 28 days, discontinue study treatments.   
 Perform CT scan and PFTs. Repeat CT scan every 4 weeks until a 
return to baseline. Bronchoscopy is recommended. 
 For recurrent non-infectious Grade 3 pneumonitis events, 
ipatasertib should be permanently discontinued. 
Grade 4 
 If infectious etiology is ruled out or if improvement is not evident 
with broad spectrum antibiotics, prescribe corticosteroids as 
clinically indicated. 
 Permanently discontinue ipatasertib.  
 Perform CT scan and PFTs. Repeat CT scan every 4 weeks until a 
return to baseline. Bronchoscopy is recommended. 
6.3.1.7 Mucositis 
Mouthwash such as magic mouth wash (if inaccessible, warm salt or bicarbonate water) should be used 
as supportive care per institution guidelines.  Brushing teeth after meals, keeping lips moisturized with 

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non-Vaseline products, and avoiding alcohol, spicy food, and smoking have all been shown to reduce 
pain and infection related to mucositis.  Ranitidine or omeprazole may be helpful if patients have 
epigastric pain.   
 
Severity of 
Mucositis 
Management Guidelines 
Grade 1 or 2 
 Manage with maximum supportive care. 
 If Grade  2 mucositis recurs in subsequent 4 week cycles, despite 
maximal supportive care, the dose of ipatasertib should be reduced by 
one dose level.
Grade  3 
 Hold ipatasertib until recovery to Grade 1 or better. If the mucositis 
resolves to Grade 1 or better during the current cycle, the dose of 
ipatasertib should be reduced by one dose level. 
 If recovery of mucositis to Grade 1 or better does not occur within a 
maximum of 4 weeks, the patient will permanently discontinue 
ipatasertib. 
 
6.3.1.8 Other Non-Hematologic Toxicities 
 If other Grade  3 non hematologic toxicities not described above develop in patients, treatment 
with ipatasertib may be held, depending on the attribution of the toxicity, at the discretion of the 
investigator.  During this time, treatment may continue with the other non-attributable treatment 
agent (darolutamide).  Grade  3 non-hematologic toxicity should be monitored at least weekly. 
 If the toxicity resolves to Grade 1 or better within 2 weeks, treatment may resume with the 
attributable agent. 
 If the toxicity resolves to Grade 1 or better in 24 weeks, the dose of the attributable drug should 
be reduced by one level. 
 Depending on the nature and the severity of the adverse event, if recovery to Grade 1 or better 
takes  4 weeks, treatment may resume with the attributable agent with dose reduction, or the 
attributable agent may be permanently discontinued, at the discretion of the investigator.   
 For Grade  3 toxicities associated primarily with laboratory abnormalities only (e.g., elevation 
of ALT, AST, lipase, or amylase, or decreases in phosphorus without clinical or other evidence 
of pancreatitis or other hepatic dysfunction), study treatment may continue without interruption 
and/or dose reduction at the discretion of the investigator per institutional practice. However, 
study treatment should be discontinued if the increase in ALT or ALT meets the criteria for 
“Hy’s law”:  
o ALT or AST >8xULN 
o ALT or AST >5xULN for more than 2 weeks 
o ALT or AST >3xULN and TBL >2xULN or INR >1.5 
o ALT or AST >3xULN with the appearance of fatigue, nausea, vomiting, right upper 
quadrant pain or tenderness, fever, rash, and/or eosinophilia (>5%) 
6.4 
Protocol Therapy Discontinuation 
In addition to discontinuation from therapy related to toxicities as outlined in section 6.2.1, a subject 
will also be discontinued from protocol therapy and followed up per protocol under the circumstances 

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outlined below. The reason for discontinuation of protocol therapy will be documented on the electronic 
case report form (eCRF). 
 
Subject has received 6 cycles of study drugs (in the Phase II neoadjuvant cohort) 
 
Documented radiographic progression (Phase I or Phase II) 
 
The treating physician/designee thinks a change of therapy would be in the best interest of the 
subject 
 
The subject requests to discontinue protocol therapy, whether due to unacceptable toxicity or for 
other reasons 
o If a subject decides to prematurely discontinue protocol therapy (“refuses treatment”), the 
subject should be asked if he may still be contacted for further scheduled study assessments. 
The outcome of that discussion should be documented in both the medical records and in the 
eCRF. 
 
If protocol therapy is interrupted for ≥ 28 days from the expected day of the next treatment.  
 
If ipatasertib is permanently discontinued due to toxicity, darolutamide may continue per protocol.  If 
darolutamide is permanently discontinued due to toxicity, ipatasertib should also be discontinued and the 
patient should proceed to prostatectomy (Phase II). 
6.5 
Protocol Discontinuation 
If a subject decides to withdraw from the study (and not just from protocol therapy) all efforts should be 
made to complete the final study assessments. The site study team should contact the subject by 
telephone or through a clinic visit to determine the reason for the study withdrawal. If the reason for 
withdrawal is an adverse event, it will be recorded on the eCRF. 

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7. 
STUDY CALENDAR & EVALUATIONS: PHASE I DE-ESCALATION COHORT 
Cycle = 28 days
Screen 
Phase I De-escalation Cohort2
(±3 days)
Safety 
follow up2 
-90 
days 
-14 
days1 
Cycle 0  
Day 1  
(7 day cycle)
Cycle 1 
Day 1  
Cycle 1 
Day 15 
Cycle 2-4 
Day 1 
Cycle 7+ 
Q3 cycles2 
(±4 wks)
30 days 
post Tx3 
REQUIRED ASSESSMENTS 
 
Medical history, smoking history, trial awareness5
X
 
Diagnosis and Staging6 
X
 
Physical exam, Vital signs, ECOG Performance status7
X
X
X
X
X
X
X
AEs & concomitant medications 
X
X
X
X
X
X
X
ECG 
X
 
LABORATORY ASSESSMENTS8 
 
Complete Blood Cell Count with diff (CBC)
X
X
X
X
X
X
X
Comprehensive Metabolic Profile (CMP)9 
X
X
X
X
X
X
X
HgA1C; LDH 
X
 
X
Fasting glucose (if not part of CMP) 
X
X
X
X
X
X
Testosterone 
 
X 
 
 
 
 
 
X 
Prostate specific antigen  
X
X
X
X
X
X
X
Antibody studies for Hepatitis B, C and HIV 
X
 
DISEASE ASSESSMENT 
 
CT or MRI of chest, abdomen and pelvis 
X
 
pre-C4
X10
Bone scan 
X
 
pre-C4
X10
TREATMENT EXPOSURE 
 
Ipatasertib (once daily, continuous) 
X
X
X
X
X
Darolutamide (twice daily, continuous) 
X12
X
X
X
Androgen deprivation therapy (per standard of care)
SOC
SOC
SOC
SOC
SOC
CORRELATIVE STUDIES (SPECIMEN COLLECTION)
 
Blood for somatic baseline 
X
 
Archival tissue slides, if available11 
X
 
Pharmacokinetic studies12 
X12
X
C3
Research blood/plasma collection  
X
X
C2, C4
X
BANKING SAMPLES (SPECIMEN COLLECTION) 
 
Whole Blood and Unstained Slides (if available)13
X
Serum and Plasma 
X
X
 
 

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Key to Footnotes: Phase I De-escalation Cohort  
1If screening (baseline) labs were performed within 7 days of C1D1 of treatment, these do not need to be repeated.   
2Visits should occur every 28 days.  A window of 3 days will be applied to all treatment study visits; for safety follow-up visit a 7-day 
window will apply. Subjects will be seen every cycle through cycle 4 day 1, then may be seen every 12 weeks ± 4 weeks (every 2-4 
cycles) until documented disease progression or discontinue therapy. 
3A safety follow-up visit will occur 30 days (±7 days) after the last dose of treatment.  
4Subjects without documented disease progression will be followed for disease progression every 6 months for 2 years.  
5Medical history to include: smoking history, trial awareness question, prior ICH and genetic testing of tumor tissue. 
6Diagnosis and staging to include pathology report and Tumor Node Metastasis (TNM) staging.  
a. Staging may be captured from initial diagnosis. 
b. Repeat abdominal imaging to confirm stage must be performed within 90 days of trial initiation. 
c. Staging will be based on the 8th edition of the AJCC Cancer Staging Manual. 
7Vital signs to include blood pressure, weight, and height (screening only) and ECOG performance status 
8Laboratory assessment will be performed prior to treatment initiation as noted and every cycle thereafter at clinic visits during 
treatment periods.   
9CMP to include sodium, potassium, chloride, creatinine, blood urea nitrogen; liver function tests (LFTs) to include AST, ALT, total 
bilirubin, alkaline phosphatase 
10After Cycle 4, disease assessments will be performed every 12 weeks (+/- 4 weeks) for two years, and then every 16 weeks (+/- 8 
weeks).  
11Fixed paraffin-embedded blocks/slides will be requested by the investigator enrolling the patient.  Request should be placed when 
the patient is being screened and slides should be shipped by C1D1 of treatment. If available, slides are required for central 
confirmation of PTEN analysis and other biomarker research. See CLM for collection, labeling, and shipping instructions. 
12Plasma will be collected on Cycle 1 Day 1 for Ipatasertib monotherapy PKs (pre-dose, +1h, +2h, +3h, +5h). Subjects will begin 
Darolutimide in the evening of C1D1 AFTER drawing samples for PKs on Ipatasertib. Additonal samples will be collected on Cycle 1 
Day 15 and Cycle 3 Day 1 (pre-dose, +1h, +2h, +3h, +5h on each day) to evaluate PKs for combination therapy. 
13Submission of unstained slides for banking from an archived FFPE tumor block (if available). See CLM for collection, labeling, and 
shipping instructions. 
 
 

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STUDY CALENDAR & EVALUATIONS: PHASE II NEOADJUVANT COHORT 
Cycle = 28 days
Screen 
Phase II Neoadjuvant Cohort 2 (±3 days) 
Surgery3
Safety 
follow up2 
Long-term 
Follow up5 
Cycles 1-2 
Cycles 3-6 
Cycle 6
-90 
days
-14 
days1
Day 1 
Days 
8, 15 
Day 1 
Day 29 
(±14d) 
30 days 
(±7d) post4
Q 6 months 
(±30 days) 
REQUIRED ASSESSMENTS 
Medical history, smoking history, trial awareness6
X
Diagnosis and Staging7 
X
Physical exam, Vital signs, ECOG Performance status8
X
X
X
X
X
AEs & concomitant medications 
X
X
X
X
X
Immunohistochemistry for PTEN11 
X
ECG 
X
LABORATORY ASSESSMENTS9 
Complete Blood Cell Count with diff (CBC) 
X
X
X
X
X
Comprehensive Metabolic Profile (CMP)10 
X
X
X
X
X
HgA1C 
X
X
X
Fasting glucose 
X
X
X
X
X
X
Testosterone; Prostate specific antigen 
X
X
X
X
X
X
DISEASE ASSESSMENT 
CT or MRI of abdomen and pelvis 
X
Bone scan 
X
TREATMENT EXPOSURE 
Ipatasertib (once daily, continuous) 
X
X
X
Darolutamide (twice daily, continuous) 
X
X
X
Androgen deprivation therapy (per standard of care)
SOC
SOC 
SOC
CORRELATIVE STUDIES (SPECIMEN COLLECTION)
Whole blood for somatic baseline 
Pre-C1
Archival biopsy slides12 
X
Research blood/plasma collection14  
Pre-C1,C2
X
Prostatectomy specimen  
X
BANKING SAMPLES (SPECIMEN COLLECTION)
Whole Blood 
Cycle 1
Unstained Slides (if available) 
Cycle 1
X
Serum and Plasma 
Cycle 1
X
FOLLOW-UP 
Survival status, evidence of biochemical progression
X

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Key to Footnotes: Phase II Neoadjuvant Cohort  
1If screening (baseline) labs were performed within 7 days of C1D1 of treatment, these do not need to be repeated.   
2Visits should occur every 28 days.  A window of 3 days will be applied to all treatment study visits; for safety follow-up visit a 7-day 
window will apply. 
3Prostatectomy will occur within 28 days (±14 days) of end of the sixth cycle.  
4A safety follow-up visit will occur 30 days (±7 days) after the last dose of treatment.  
5Subjects without documented disease progression will be followed for disease progression every 6 months for 2 years.  
6Medical history to include smoking history, trial awareness question prior IHC and genetic testing of tumor tissue. 
7Diagnosis and staging to include pathology report and Tumor Node Metastasis (TNM) staging.  
d. Staging may be captured from initial diagnosis. 
e. Repeat abdominal imaging to confirm stage must be performed within 90 days of trial initiation. 
f. Staging will be based on the 8th edition of the AJCC Cancer Staging Manual. 
8Vital signs to include blood pressure, weight, and height (screening only) and ECOG performance status 
9Laboratory assessment will be performed prior to treatment initiation as noted and every cycle therafter at clinic visits during 
treatment periods.  Following the conclusion of treatment, testosterone and PSA assessment will be continued with each visit during 
long term follow up at the interval noted above. 
10CMP to include sodium, potassium, chloride, creatinine, blood urea nitrogen; liver function tests (LFTs) to include AST, ALT, total 
bilirubin, alkaline phosphatase 
11Immunohistochemistry for PTEN expression will be performed and evaluated by the enrolling institution for each patient and 
retrospectively undergo central review.   
12 Fixed paraffin-embedded blocks/slides will be requested by the investigator enrolling the patient.  Request should be placed when 
the patient is being screened and slides should be shipped by C1D1 of treatment. Slides are requested for central confirmation of 
PTEN analysis and other biomarker research. See CLM for collection, labeling, and shipping instructions. 
13Submission of unstained slides for banking from an archived FFPE tumor block (if available). See CLM for collection, labeling, and 
shipping instructions. 
14Blood collected for biomarker evaluation (e.g. Immunogenicity and ctDNA).

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7.1 
Safety Follow-up Evaluations 
A safety follow-up visit should occur when subjects permanently stop study treatment for whatever 
reason (toxicity, progression, or at discretion of site investigator) and should be performed 30 days (±7 
days) after the last dose of treatment. Subjects who have an ongoing ≥ grade 2 or serious AE (SAE) at 
this visit will continue to be followed until the AE resolves to ≤ Grade 1 or baseline, is deemed clinically 
insignificant, and/or until a new anti-cancer treatment starts, whichever is earlier. 
7.2 
Long Term Follow-up Evaluations 
Subjects in the Phase I cohort will not have any long term follow-up evaluations.  
 
All subjects in the Phase II neoadjuvant cohort will be followed every 6 months for two years following 
prostatectomy or until documented biochemical recurrence. If a subject does not undergo prostatectomy 
and does not have documented disease progression, he will be followed for disease progression every 6 
months for 2 years. Follow up may be accomplished via clinic visit, phone call, or other avenues as 
appropriate.  In cases of disease recurrence the choice of followup therapy will be as per the treating 
physician.  However, adjuvant or salvage therapy should not start until after PSA and testosterone level 
results are obtained at least four weeks after surgery.  
 
8. 
BIOSPECIMEN STUDIES AND PROCEDURES 
The current study will collect pre-treatment and post-treatment archival tissue from diagnostic biopsy 
and radical prostatectomy, respectively, for use in exploratory studies.  We hypothesize that co-
inhibition of AR and AKT will cause an exceptional pathologic response in patients with prostate cancer 
with PTEN loss, but other pathways may contribute to resistance to this strategy.  These include 
persistent activation of hormone receptors or the PI3K pathway despite inhibition, or differentiation 
toward neuroendocrine phenotype.  In addition, PI3K pathway inhibition may release repression of 
immune pathways.  Exploratory objectives of this study include evaluation for PI3K-AKT pathway 
activity and effects on other drivers of proliferation and survival (e.g. androgen receptor (AR), 
glucocorticoid receptor (GR), proliferation (using Ki-67) and change in neuroendocrine marker 
expression among others). See Correlative Laboratory Manual for detailed collection, processing, and 
shipping instructions.  
8.1 
Source and Timing of Biospecimen Collections 
8.1.1 Phase I de-escalation cohort 
Tissue – For the Phase I cohort, the most recent archival tissue available will be requested. This is 
mandatory if available, but patients may enroll if archival tissue is not available. If and when funding 
becomes available, these studies will include immunohistochemical (IHC) analysis (such as evaluation 
of expression of hormone receptors, markers of proliferation, neuroendocrine markers, and immune 
markers), as well as extraction and evaluation of DNA and RNA for genetic analysis.  
 
Blood for Pharmacokinetics –  
Plasma will be collected Cycle 1 Day 1, Cycle 1 Day 15 and Cycle 3 Day 1 (pre-dose, +1h, +2h, +3h, 
+5h on each day) to evaluate PKs.  Plasma will be collected on Cycle 1 Day 1 for Ipatasertib 
monotherapy PKs (pre-dose, +1h, +2h, +3h, +5h). Subjects will begin Darolutimide in the evening 

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AFTER drawing samples for PKs on Ipatasertib. Additonal samples will be collected on Cycle 1 Day 15 
and Cycle 3 Day 1 (pre-dose, +1h, +2h, +3h, +5h on each day) to evaluate PKs for combination therapy. 
 
Blood/plasma for immunogenicity studies and ctDNA - Blood will be collected Cycle 0 Day 1, Cycle 
1 Day 1, Cycle 2 Day 1, Cycle 4 Day 1, and at safety follow up. Analysis to be performed upon receipt 
of funding. 
 
Blood for somatic baseline - Whole blood will be collected prior to C1D1 treatment for somatic 
baseline comparison. 
8.1.2 Phase II Neoadjuvant cohort 
Prostate biopsy - Archival tissue must be available to evaluate for PTEN loss locally using the Ventana 
SP218 immunohistochemistry assay.  Central review to confirm PTEN loss will be performed 
retrospectively. If and when funding becomes available, additional studies may include 
immunohistochemical (IHC) analysis (such as evaluation of expression of hormone receptors, markers 
of proliferation, and neuroendocrine markers), as well as extraction and evaluation of DNA and RNA 
for genetic analysis.  
 
Prostatectomy specimen - Once the prostatectomy specimen has been evaluated for clinical purposes, 
tissue is required for central review and correlative studies. If there is more than minimal residual 
disease on a single block, a block representative of the residual disease is requested to be used for 
exploratory studies, as well as a corresponding H&E slide. If and when funding becomes available, these 
studies will include immunohistochemical (IHC) analysis (such as evaluation of expression of hormone 
receptors, markers of proliferation, neuroendocrine markers, and immune markers), as well as extraction 
and evaluation of DNA and RNA for genetic analysis. If there is a pathological complete response 
(pCR) or minimal residual disease (MRD) by local review, slides from each block are requested for 
central review.   
 
Blood/plasma for immunogenicity studies and ctDNA - Blood will be collected Cycle 1 Day 1, Cycle 
2 Day 1, and Cycle 6 Day 1. Analysis to be performed upon receipt of funding. 
 
Blood for somatic baseline - Whole blood will be collected prior to C1D1 treatment for somatic 
baseline comparison. 
8.2 
Banking of Leftover Biospecimens 
Subject consent will be obtained to bank any leftover samples that were collected for study-specific 
correlative research. Hoosier Cancer Research Network (HCRN), as Administrative Headquarters for 
the Big Ten CRC, will manage the banked samples. Samples will be banked indefinitely in the Hoosier 
Cancer Research Network Biorepository and used for future unspecified cancer-related research.  
8.3 
Banking Samples for Future Unspecified Research 
Subject consent will be obtained to collect additional samples for future unspecified Big Ten Cancer 
Research Consortium studies. HCRN will manage the banked samples. Samples will be banked 
indefinitely in the HCRN Biorepository.  
 
This includes: 

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 Whole blood: Whole blood will be collected prior to treatment on Cycle 1 Day 1.  
 Pre- and Post-treatment plasma: Whole blood for plasma will be collected prior to treatment on Cycle 
1 Day 1 and at the 30-day Safety Follow-up visit.  
 Pre- and Post-treatment serum: Whole blood for serum will be collected prior to treatment on Cycle 1 
Day 1 and at the 30-day Safety Follow-up visit. 
 Unstained slides: Unstained slides will be obtained from the subject’s archived pre-treatment formalin 
fixed paraffin embedded prostate tumor tissue sample and also from the prostatectomy sample, when 
applicable. 
 
Please refer to the Correlative Laboratory Manual (CLM) for all sample collection, processing, labeling, 
and shipping instructions. 
8.4 
Confidentiality of Biospecimens 
Samples will be identified by a subject’s study number assigned at the time of registration to the trial. 
Any material issued to collaborating researchers will be anonymized and only identified by the subject’s 
study number. 
 
9. 
CRITERIA FOR DISEASE EVALUATION 
9.1 
Phase II Neoadjuvant cohort 
9.1.1 Pathological response 
Response for the Phase II neoadjuvant cohort will be evaluated at the time of prostatectomy. Those with 
pathological complete response (absence of pathologic disease on hematoxylin and eosin (H&E) stain 
(defined as ypT0)), or with presence of minimal residual disease (<5 mm linearly), will be considered to 
be responders. Those with more than minimal residual disease will be considered to have no response. 
9.1.2 Biochemical recurrence 
Relapse or recurrence will be determined by detectable PSA (≥ 0.1 ng/mL) on scheduled bloodwork 
confirmed with a rising PSA at least one week later, the appearance of metastatic disease on imaging, or 
biopsy-proven relapse. For biochemical recurrence, the date of recurrence will be dated back to the 
initial detectable PSA. 
9.1.3 PSA0 
PSA0 is defined as recovery of testosterone to non-castrate level (>50 ng/dL) and undetectable PSA 
(reported as ≤ 0.1 ng/mL or undetectable). 
9.2 
Phase I De-escalation Cohort 
Response will be evaluated in the Phase I Cohort at 12 weeks, using PCWG3 criteria. No additional 
timepoints for response evaluation are mandated, with the exception of those with bone-only progression 
requiring confirmation scan. For those without progression and continuing on therapy, tumor evaluation 
should occur at least annually. Patients will continue to be followed until the time of progression or end 
of treatment, whichever comes first. The timing (date) and cause (radiographic progression, clinical 
progression, PSA progression, toxicity) of end of treatment will be recorded. It is recommended that 
treatment continue until radiographic progression, but physician/designee discretion is allowed. 

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9.3 
Prostate Cancer Working Group 3 (PCWG3) response criteria 
This study makes use of a modified version of the PCWG3 response criteria for the Phase I cohort, 
which consists of the following three distinct evaluations, with separate evaluation for measurable 
disease (modified RECIST 1.1), bone metastases (2+2 rule), or PSA response. Please see below for 
details. 
9.4 
Measurable disease 
Measurable disease is defined as the presence of at least one lesion that can be accurately measured in at 
least one dimension (longest diameter to be recorded) as >10 mm with CT scan.  All tumor 
measurements must be recorded in millimeters (or decimal fractions of centimeters). 
9.4.1 Malignant Lymph Nodes 
To be considered pathologically enlarged and measurable, a lymph node must be >15 mm in short axis 
when assessed by CT scan (CT scan slice thickness recommended to be no greater than 5 mm).  At 
baseline and in follow-up, only the short axis will be measured and followed. 
9.5 
Non-measurable Lesions 
All other lesions (or sites of disease), including small lesions (longest diameter <10 mm or pathological 
lymph nodes with ≥ 10 to <15 mm short axis), are considered non-measurable disease.  Bone lesions, 
leptomeningeal disease, ascites, pleural/pericardial effusions, lymphangitis cutis/pulmonitis, and 
abdominal masses (not followed by CT or MRI), are considered as non-measurable. 
9.6 
Target Lesions  
All measurable lesions up to a maximum of 2 lesions per organ and 5 lesions in total, representative of 
all involved organs, should be identified as target lesions and recorded and measured at baseline.  Target 
lesions should be selected on the basis of their size (lesions with the longest diameter), be representative 
of all involved organs, but in addition should be those that lend themselves to reproducible repeated 
measurements.  It may be the case that, on occasion, the largest lesion does not lend itself to 
reproducible measurement in which circumstance the next largest lesion which can be measured 
reproducibly should be selected.  A sum of the diameters (longest for non-nodal lesions, short axis for 
nodal lesions) for all target lesions will be calculated and reported as the baseline sum diameters.  If 
lymph nodes are to be included in the sum, then only the short axis is added into the sum.  The baseline 
sum diameters will be used as reference to further characterize any objective tumor regression in the 
measurable dimension of the disease. 
9.7 
Non-target Lesions 
All other lesions (or sites of disease) including any measurable lesions over and above the 5 target 
lesions should be identified as non-target lesions and should also be recorded at baseline.  Measurements 
of these lesions are not required, but the presence, absence, or in rare cases unequivocal progression of 
each should be noted throughout follow-up. 
9.8 
Evaluation of Target Lesions 
NOTE: In addition to the information below, also see section 4.3.2 in the international criteria proposed 
by the Response Evaluation Criteria in Solid Tumors (RECIST) Committee, version 1.1 (Eur J Cancer 
45;2009:228-247) for special notes on the assessment of target lesions.  
 

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Complete 
Response (CR) 
Disappearance of all target lesions.  Any pathological lymph 
nodes (whether target or non-target) must have reduction in 
short axis to <10 mm.
Partial Response 
(PR) 
At least a 30% decrease in the sum of the diameters of target 
lesions, taking as reference the baseline sum diameters 
Progressive 
Disease (PD) 
At least a 20% increase in the sum of the diameters of target 
lesions, taking as reference the smallest sum on study (this 
includes the baseline sum if that is the smallest on study).  In 
addition to the relative increase of 20%, the sum must also 
demonstrate an absolute increase of at least 5 mm.  (Note:  the 
appearance of one or more new lesions is also considered 
progressions).
Stable Disease 
(SD) 
Neither sufficient shrinkage to qualify for PR nor sufficient 
increase to qualify for PD, taking as reference the smallest sum 
diameters while on study
 
9.9 
Evaluation of Non-target Lesions 
Complete Response (CR) 
Disappearance of all non-target lesions and 
normalization of tumor marker level.  All lymph 
nodes must be non-pathological in size (<10 mm 
short axis) 
 
Note:  If tumor markers are initially above the upper 
normal limit, they must normalize for a subject to be 
considered in complete clinical response. 
Non-CR/ Non-PD 
Persistence of one or more non-target lesion(s) and/or 
maintenance of tumor marker level above the normal 
limits
Progressive Disease (PD) 
Appearance of one or more new lesions and/or 
unequivocal progression of existing non-target 
lesions.  Unequivocal progression should not 
normally trump target lesion status.  It must be 
representative of overall disease status change, not a 
single lesion increase.
 
9.10 
Evaluation of Best Overall Response 
 
Target Lesions 
Non-Target Lesions 
New Lesions
Overall 
Response 
CR 
CR 
No 
CR 
CR 
Non-CR/ Non-PD 
No 
PR 
CR 
Not evaluated 
No 
PR 

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Target Lesions 
Non-Target Lesions 
New Lesions
Overall 
Response 
PR 
Non-PD/ or not all 
evaluated 
No 
PR 
SD 
Non-PD or not all evaluated 
No 
SD 
Not all evaluated 
Non-PD 
No 
Non-evaluable 
PD 
Any 
Yes or No 
PD 
Any 
PD* 
Yes or No 
PD 
Any 
Any 
Yes 
PD 
*In exceptional circumstances, unequivocal progression in non-target lesions may be 
accepted as disease progression.
 
Subjects with a global deterioration of health status requiring discontinuation of treatment without 
objective evidence of disease progression at that time should be classified as having “symptomatic 
deterioration”.  Every effort should be made to document the objective progression even after 
discontinuation of treatment. 
9.11 
Imaging biomarkers: Bone  
Record changes on bone scan as improved or stable (no new lesions) or worse (new lesions). Changes in 
intensity of uptake do not constitute progression or regression. For progression to occur, at least two new 
lesions must appear on first post-treatment scan, with at least two additional lesions on the next scan at 
least 6 weeks later (2+2 rule). If at least two additional lesions are seen on the next (confirmatory) scan, 
the date of progression is the date of the first scan, when the first two new lesions were documented. For 
all scans after the 12 week scan, at least two new lesions indicates progression. Date of progression is 
the date of the scan that first documents the second lesion. 
9.12 
Blood-based marker: PSA 
Record the percent change from baseline at 12 weeks, and separately, the maximal change at any time. 
PSA at twelve weeks will be used to determine response. PSA decrease of 50% or more will be counted 
as PSA response. PSA increase of 25% or more will be counted as PSA progression. 
 
10. 
DRUG INFORMATION 
10.1 
Ipatasertib  
Ipatasertib is an AKT inhibitor that acts by binding to the adenosine triphosphate (ATP)-binding pocket 
of the activated isoforms of AKT.   
 
Please refer to the current version of the Investigator’s Brochure (IB) for additional information 
regarding this drug. 

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10.1.1 Supplier/How Supplied 
The Ipatasertib Drug Product will be supplied by Genentech, Inc. at no charge to subjects participating 
in this clinical trial as 100- and 200-mg tablets. 
 
The investigator shall take responsibility for and shall take all steps to maintain appropriate records and 
ensure appropriate supply, storage, handling, distribution, and usage of investigational product in 
accordance with the protocol and any applicable laws and regulations. 
10.1.2 Preparation  
Ipatasertib is provided as oral tablets. 
10.1.3 Storage and Stability 
Ipatasertib should be stored at room temperature. 
10.1.4 Handling and Disposal 
Ipatasertib should be handled in accordance with good practice rules and local guidelines for oral 
anticancer drugs. 
 
After final drug reconciliation, unused ipatasertib should be disposed at the site following procedures 
for the disposal of anticancer drugs. 
10.1.5 Dispensing 
Ipatasertib must be dispensed only from official study sites and to eligible subjects under the 
supervision of the site investigator. Ipatasertib should be stored in a secure area according to local 
regulations. It is the responsibility of the site investigator to ensure that study drug is only dispensed to 
subjects. 
10.1.6 Adverse Events 
Adverse events associated with ipatasertib use include diarrhea, nausea, vomiting, alopecia, 
neuropathy, fatigue, rash and decreased neutrophil count. Please refer to the IB for the comprehensive 
list of adverse events associated with ipatasertib use.   
10.2 
Darolutamide 
Darolutamide is an androgen receptor inhibitor that competitively inhibits androgen binding, nuclear 
translocation and androgen receptor mediated transcription. 
 
Please refer to the latest version of the prescribing information that can be found at 
http://www.accessdata.fda.gov/scripts/cder/drugsatfda/, and/or on the manufacturer’s website. 
10.2.1 Supplier/How Supplied 
Darolutamide will be supplied by Bayer at no charge to subjects participating in this clinical trial. 
 
The investigator shall take responsibility for and shall take all steps to maintain appropriate records and 
ensure appropriate supply, storage, handling, distribution, and usage of investigational product in 
accordance with the protocol and any applicable laws and regulations. 

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10.2.2 Preparation  
Darolutamide is provided as oral tablets.  
10.2.3 Storage and Stability 
Store at 20°C to 25°C (68°F to 77°F); excursions permitted between 15°C and 30°C (59°F and 86°F). 
10.2.4 Handling and Disposal 
Darolutamide should be handled in accordance with good practice rules and local guidelines for oral 
anticancer drugs. 
 
After final drug reconciliation, unused darolutamide should be disposed at the site following procedures 
for the disposal of anticancer drugs. 
10.2.5 Dispensing 
Darolutamide must be dispensed only from official study sites and to eligible subjects under the 
supervision of the site investigator. Darolutamide should be stored in a secure area according to local 
regulations. It is the responsibility of the site investigator to ensure that study drug is only dispensed to 
subjects. 
10.2.6 Adverse Events 
Adverse events associated with darolutamide include fatigue, pain in an extremity, rash, ischemic heart 
disease and heart failure. Please refer to the package insert for darolutamide for the comprehensive list 
of adverse events associated with darolutamide use. 
 
11. 
ADVERSE EVENTS 
11.1 
Definitions 
11.1.1 Adverse Event (AE) 
An AE is any untoward medical occurrence whether or not considered related to the study drug that 
appears to change in intensity during the course of the study. The following are examples of AEs:  
 Unintended or unfavorable sign or symptom 
 A disease temporally associated with participation in the protocol 
 An intercurrent illness or injury that impairs the well-being of the subject 
 
Abnormal laboratory values or diagnostic test results constitute AEs only if tthey induce clinical signs 
or symptoms or require treatment or further diagnostic tests.  
 
Hospitalization for elective surgery or routine clinical procedures that are not the result of an AE (e.g., 
surgical insertion of central line) should not be recorded as an AE.  
 
Disease progression should not be recorded as an AE, unless it is attributable to the study regimen by 
the site investigator. 
11.1.2 Serious Adverse Event (SAE) 
An SAE is an adverse event that: 

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 Results in death. NOTE: Death due to disease progression should not be reported as a SAE, 
unless it is attributable by the site investigator to the study drug(s) 
 Is life-threatening (defined as an event in which the subject was at risk of death at the time of the 
event; it does not refer to an event which hypothetically might have caused death if it were more 
severe) 
 Requires inpatient hospitalization for >24 hours or prolongation of existing hospitalization. 
NOTE: Hospitalization for anticipated or protocol specified procedures such as administration 
of chemotherapy, central line insertion, metastasis interventional therapy, resection of primary 
tumor, or elective surgery, will not be considered serious adverse events. 
 Results in persistent or significant disability/incapacity 
 Is a congenital anomaly or birth defect 
 Is an important medical event (defined as a medical event(s) that may not be immediately life-
threatening or result in death or hospitalization but, based upon appropriate medical and 
scientific judgment, may jeopardize the subject or may require intervention (e.g., medical, 
surgical) to prevent one of the other serious outcomes listed in the definition above). Examples 
of such events include, but are not limited to, intensive treatment in an emergency room or at 
home for allergic bronchospasm; blood dyscrasias or convulsions not resulting in hospitalization; 
or the development of drug dependency or drug abuse. 
11.1.3 Unexpected Adverse Event 
For this study, an AE is considered unexpected when it varies in nature, intensity or frequency from 
information provided in the current IB, package insert, or when it is not included in the informed 
consent document as a potential risk. Unexpected also refers to AEs that are mentioned in the IB as 
occurring with a class of drugs or are anticipated from the pharmacological properties of the drug, but 
are not specifically mentioned as occurring with the particular drug under investigation.   
11.1.4 Relatedness 
AEs will be categorized according to the likelihood that they are related to the study drug(s).  
 
To ensure consistency of AE and SAE causality assessments, site investigators should apply the 
following general guideline: 
 
Yes 
There is a plausible temporal relationship between the onset of the AE and administration of ipatasertib, 
and the AE cannot be readily explained by the subject’s clinical state, inter-current illness, or 
concomitant therapies; and/or the AE follows a known pattern of response to ipatasertib; and/or the AE 
abates or resolves upon discontinuation of atezolizumab or dose reduction and, if applicable, reappears 
upon re- challenge. 
 
No 
Evidence exists that the AE has an etiology other than the ipatasertib (e.g., preexisting medical 
condition, underlying disease, inter-current illness, or concomitant medication); and/or the AE has no 
plausible temporal relationship to ipatasertib administration (e.g., cancer diagnosed 2 days after first 
dose of Ipatasertib). 
 

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Expected adverse events are those adverse events that are listed or characterized in the current 
Investigator Brochure (IB). 
 
Unexpected adverse events are those not listed in the current IB or not identified. This includes adverse 
events for which the specificity or severity is not consistent with the description in the package insert or 
IB.  
11.1.5 AEs of Special Interest (AESIs) 
AEs of Special Interest are defined as a potential safety problem, identified as a result of safety 
monitoring of the Product. AESIs shall be forwarded to Genentech as described in the Genentech 
Safety Data Exchange Agreement (SDEA).  
 
The Ipatasertib Events of Special Interest are:   
 Cases of potential drug-induced liver injury that include an elevated ALT or AST in combination 
with either an elevated bilirubin or clinical jaundice, as defined by Hy's Law  
 Suspected transmission of an infectious agent by the study drug, as defined below 
Any organism, virus, or infectious particle (e.g., prion protein transmitting transmissible 
spongiform encephalopathy), pathogenic or non-pathogenic, is considered an infectious agent.  A 
transmission of an infectious agent may be suspected from clinical symptoms or laboratory 
findings that indicate an infection in a patient exposed to a medicinal product.  This term applies 
only when a contamination of the study drug is suspected. 
 Grade  3 fasting hyperglycemia  
 Grade  3 hepatotoxicity 
 Grade  3 ALT/AST elevations 
 Grade  2 colitis/enterocolitis 
 Grade  3 diarrhea 
 Grade  3 rash 
 Grade  2 pneumonitis 
11.1.6 Selected Adverse Events 
Additional data including grade, timing and required interventions will be collected for the following 
selected adverse events: 
 
Diarrhea 
 
Asthenia (fatigue) 
 
Nausea 
 
Neutropenia (neutrophil count decreased, febrile neutropenia) 
 
Rash (e.g., maculopapular, erythema, urticarial, dermatitis, rash popular, skin exfoliation, toxic 
skin eruption) 
 
Erythema multiforme 
 
Vomiting 
 
Oral mucositis (stomatitis, mucosal inflammation, mouth inflammation, mouth ulceration) 
 
Hyperlipidemia (hypercholesterolemia, hypertriglyceridemia, hyperlipidemia, blood cholesterol 
increased, blood triglycerides increased) 
 
Hepatotoxicity (ALT, AST increased) 
 
Hyperglycemia (blood glucose increased) 

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 
Pneumonitis (interstitial lung diseases) 
11.2 
Reporting 
11.2.1 Adverse Events 
 AEs will be recorded from time of signed informed consent until 30 days after discontinuation of 
study drug(s) or until a new anti-cancer treatment starts, whichever occurs first. 
 AEs will be recorded regardless of whether or not they are considered related to the study 
drug(s). 
 All AEs will be recorded in the subject’s medical record and on the appropriate study specific 
eCRF form within the EDC system. 
 All AEs considered related to study drug(s) will be followed until resolution to ≤ Grade 1 or 
baseline, deemed clinically insignificant, and/or until a new anti-cancer treatment starts, 
whichever occurs first. 
 
11.2.2 Reporting of Pregnancy 
 Pregnancy will be reported from time of first study drug until 30 days after discontinuation of 
study drug(s). 
 Pregnancy will be reported to Big Ten CRC AHQ within 1 business day of discovery of the 
event. 
 Pregnancy will be reported using the Big Ten CRC Pregnancy Reporting Form (see 
Documents/Info tab of the EDC). 
 
The initial pregnancy notification and pregnancy follow-up will be recorded on the Big Ten CRC 
Pregnancy Reporting Form. The form will include an assessment of the possible relationship to the 
study treatment of any pregnancy outcome. Any SAE experienced during pregnancy will be reported 
on the SAE Submission Form.  
 
The site will submit the completed Pregnancy Reporting Form to Big Ten CRC AHQ within 24 
hours of discovery of the event. The form will be sent electronically to safety@hoosiercancer.org. 
The site investigator is responsible for informing the IRB and/or other local regulatory bodies of the 
event as per local requirements. 
 
11.2.3 Serious Adverse Events (SAEs) 
11.2.3.1 Site Requirements for Reporting SAEs to Big Ten CRC Administrative Headquarters 
 SAEs will be reported from time of study drug administration until 30 days after discontinuation 
of study drug(s) or until a new anti-cancer treatment starts, whichever occurs first.  
 SAEs will be reported on the SAE Submission Form and entered in the SAE tab in the EDC 
system. 
 SAEs include events related and unrelated to the study drug(s).  
 All SAEs will be recorded in the subject’s medical record and on the appropriate study specific 
eCRF form within the EDC system.   
 All SAEs regardless of relation to study drug will be followed until resolution to ≤ Grade 1 or 
baseline and/or deemed clinically insignificant and/or until a new anti-cancer treatment starts, 
whichever occurs first. 

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For SAEs and AESIs assessed as at least possibly related to the study drug(s) or assessed as unknown 
relation, the site will submit the completed SAE Submission Form (see Documents/Info tab in the EDC) 
to Big Ten CRC AHQ within 1 business day of discovery of the event.  The form will be sent 
electronically to Big Ten CRC AHQ at safety@hoosiercancer.org.  The site investigator is responsible 
for informing the IRB and/or other local regulatory bodies of the SAE as per local requirements. 
 
The original copy of the SAE Submission Form and the email correspondence must be kept within the 
study file at the study site. 
 
Once the SAE has resolved, sites must electronically submit a follow up SAE Submission Form within a 
reasonable timeframe to Big Ten CRC AHQ at safety@hoosiercancer.org. 
 
SAEs assessed as unreleated to study drug will entered in to the EDC within 30 days of awareness of the 
event.  
11.2.3.2 Big Ten CRC AHQ Requirements for Reporting SAEs or Pregnancies to Genentech 
Upon receipt of an SAE Submission Form or Pregnancy Reporting Form from the site, Big Ten CRC 
AHQ will report to Genentech within 1 calendar day, as described in the Genentech Safety Data 
Exchange Agreement (SDEA). Follow-up information will be provided to Genentech as it is received 
from a site.  
 
Genentech Contact: 
Email:  usds_aereporting-d@gene.com.  
 
SAEs assessed as unrelated to study drug will be reported to Genentech on a monthly basis. 
11.2.3.3 Big Ten CRC AHQ Requirements for Reporting SAEs or Pregnancies to Bayer 
Upon receipt of an SAE Submission Form or Pregnancy Reporting Form from the site, Big Ten CRC 
AHQ will report to Bayer within 24 hours of receipt of the SAE Reporting Form/ Pregnancy Reporting 
Form from a site. Follow-up information will be provided to Bayer HealthCare Oncology as it is 
received from a site. 
 
SAE Reports will be sent to the email address provided below. By sending to this e-mail address, the 
Bayer Pharmacovigilance group and the Bayer clinical operations project manager will receive copies of 
the reports. This process will be tested and established before the first patient is enrolled in the trial.  
 
Bayer Safety Contacts:  
Fax: 973-709-2185 
For e-mail transmission of individual SAE reports: DrugSafety.GPV.US@bayer.com  
 
SAEs assessed as unrelated to study drug will be reported to Bayer on a monthly basis. 
11.2.3.4 Sponsor-Investigator Responsibilities 
Big Ten CRC AHQ will send a SAE summary to the sponsor-investigator within 1 business day of 
receipt of SAE Submission Form from a site.  The sponsor-investigator will promptly review the SAE 
summary and assess for expectedness and relatedness. 

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11.2.3.5 Big Ten CRC AHQ Responsibilities for Reporting SAEs to FDA 
Big Ten CRC AHQ has been designated to manage the Investigational New Drug Application (IND) 
associated with this protocol on behalf of the sponsor-investigator.  Big Ten CRC AHQ will cross-
reference this submission to Genentech and Bayer’s parent IND at the time of submission.  Additionally, 
Big Ten CRC AHQ will submit a copy of these documents to Genentech and Bayer at the time of 
submission to FDA. 
 
Big Ten CRC AHQ will be responsible for all communication with the FDA in accordance with 
21CFR312 which includes but is not limited to the 7 and 15 Day Reports, as well as an Annual Progress 
Report. Additionally, Big Ten CRC AHQ will submit a copy of these reports to Genentech and Bayer at 
the time of submission to FDA. 
11.2.3.6 IND Safety Reports Unrelated to this Trial 
Genentech Inc. and Bayer will provide Big Ten CRC AHQ with IND safety reports from external 
studies that involve the study drug(s) per their guidelines. Big Ten CRC AHQ will forward the safety 
reports to the sponsor-investigator who will review these reports and determine if revisions are needed 
to the protocol or consent.  Big Ten CRC AHQ will forward these reports to participating sites within 1 
business day of receiving the sponsor-investigator’s review. Based on the sponsor-investigator’s 
review, applicable changes will be made to the protocol and informed consent document (if required). 
All IND safety reports will also be made available to sites via the EDC system. 
 
Upon receipt from Big Ten CRC AHQ, site investigators (or designees) are responsible for submitting 
these safety reports to their respective IRBs, as per their IRB policies. 
 
12. 
STATISTICAL METHODS 
12.1 
Study Design 
This is a phaseI/ II single armed study.  Patients and caregivers will not be blinded as there is only one 
treatment arm.   
12.2 
Endpoints 
12.2.1 Definition of Primary Endpoint 
 Combined rate of pathologic complete response (pCR) (defined as absence of pathologic disease 
on hematoxylin and eosin (H&E) stain (ypT0)), or with presence of minimal residual disease (<5 
mm linearly)  
12.2.2 Definition of Secondary Endpoints 
 Grade 3 and 4 toxicities as defined by the NCI Common Terminology Criteria for Adverse 
Events (NCI CTCAE) v5. 
 Two year biochemical recurrence-free survival (defined as PSA ≤ 0.2 ng/mL) 
 Rate of PSA0 (undetectable PSA on local institutions laboratory testing with testosterone 
recovery and no additional therapy) 

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12.3 
Sample Size and Accrual 
In this Simon MiniMax two-stage, single arm, phase I/II trial, we anticipate enrolling 17 evaluable 
PTEN-negative subjects in the primary analysis (phase II) cohort.  The therapy will be considered to be 
of little interest in the neoadjuvant setting if the exceptional response rate is <5% (similar to AR-targeted 
therapy alone) and considered active if the exceptional response rate is 30%.  The study is designed 
with 90.5% power to detect the difference between the null hypothesis (5% or less response rate) and the 
alternative hypothesis (30%) with one-sided type I error of 0.05.  In the first stage nine (9) patients will 
be recruited.  If one (1) or more responses (pCR or MRD) are observed, another eight (8) evaluable 
patients will be recruited for a total of 17 evaluable patients. If 3 or more of 17 responses are observed, 
the study will be deemed a success. To account for 15% attrition, we plan to enroll 20 patients.   
 
The Phase I de-escalation cohort will consist of patients with metastatic or nonmetastatic castrate 
resistant prostate cancer, with the expected sample size of 6, assuming no more than 1 DLT in the first 
6 patients.  However, if dose reductions of ipatasertib are required, the sample size could be as large as 
18.   
12.4 
Assessment of Safety 
Any subject that receives at least one dose of treatment on this protocol will be evaluated for toxicity.   
Drug toxicity will be defined using the National Cancer Institute (NCI) Common Terminology Criteria 
for Adverse Events (CTCAE), version 5.0.     
12.5 
Assessment of Efficacy 
Efficacy will be determined at the time of prostatectomy, 6 months after drug initiation, by the rate of 
response.  Response is defined by the combined rate of pathologic complete response (pCR) and 
minimal residual disease (MRD), as defined by residual tumor <5 mm in cross section. 
12.6 
Data Analysis Plans 
Success rates and corresponding confidence intervals will be computed for primary, secondary and 
exploratory variables. Descriptive statistics, such as mean, median, SD, min and max, will be provided 
for continuous variables, and contingency tables will be provided for pairs discrete variables.  Kaplan-
Meier methodology will be used to estimate BCR-free survival. Two year biochemical recurrence-free 
survival and rate of PSA0 (undetectable PSA with testosterone recovery and no additional therapy) will 
be computed. Data will be analyzed by the study statistician using R and Stata software.  
12.6.1 Analysis Plans for Primary Objective 
The primary endpoint is the response rate.  This is the combined rate of pathologic complete response 
(pCR) and minimal residual disease (MRD), as defined by residual tumor <5 mm in cross section. Point 
estimator and 95% confidence interval will be provided. 
12.6.2 Analysis Plans for Secondary Objectives 
For secondary endpoints, descriptive statistics will be given for rates of toxicity and rates of PSA0.  
Kaplan-Meier methodology will be used to estimate BCR-free survival, with 95% confidence envelope 
around the survival curve.  

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12.6.3 Analysis Plans for Exploratory Objectives 
 For exploratory endpoints descriptive statistics will be used to evaluate the mean, median, SD and the 
range of observed values.  
12.7 
Interim Analysis/Criteria for Stopping Study  
12.7.1 Phase I (De-escalation Cohort) 
The study will be terminated if there are 2 or more DLTs at dose level -2 (darolutamide 600 mg BID and 
ipatasertib 200 mg daily) and will not proceed to Phase II. 
12.7.2 Phase II (Neoadjuvant Cohort) 
In the Phase II neoadjuvant cohort, if after 9 evaluable patients there are no patients with exceptional 
response (defined as pCR or MRD), accrual will halt due to lack of efficacy.  Accrual will not pause 
while the 9th patient is on therapy, so additional patients may accrue prior to pathologic evaluation of the 
9th radical prostatectomy. 
 
For the Phase II neoadjuvant cohort, an additional early stopping rule for safety will also be followed 
throughout the duration of the study. If, at any time, 2 or more patients experience a delay in time to 
prostatectomy of >28 days after the final dose of ipatasertib (i.e., a delay of > 1 week beyond the 
allowed timeline of 7-21 days) due to an ipatasertib-related AE, the study and all study treatment will 
be stopped. An ipatasertib-related AE is defined as an AE that is possibly, probably, or definitely related 
to ipatasertib. Should the study stop early, discussion of reopening the study using modified ipatasertib 
treatment regimens may be considered after discussion between the PI and Genentech, and after 
approval by the DSMC. 
 
13. 
TRIAL MANAGEMENT 
13.1 
Data and Safety Monitoring Plan (DSMP) 
This study will be conducted in compliance with the Data Safety Monitoring Plan (DSMP) of the Robert 
H. Lurie Comprehensive Cancer Center of Northwestern University. 
 
BTCRC AHQ oversight activities include: 
 Review and processing of all adverse events requiring expedited reporting as defined in the protocol 
 Provide trial accrual progress, safety information, and data summary reports to the sponsor-
investigator  
 Submit data summary reports to the lead institution DSMC and attend DSMC reviews: 
o during the Phase I portion of the study, monthly to present safety summary reports 
o during the Phase II neoadjuvant portion of the study, as applicable: following any reports of 
protocol deviations that meet IRB expedited reporting requirements, continued non-compliance 
or SAEs; and overall study data delinquency that exceeds 10% incomplete forms or sites with 
data delinquency that are not responding sufficiently to the BTCRC AHQ data delinquency 
escalation process   
o throughout the study, semi-annual comprehensive DSMC review  

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 During the Phase I portion of the study there will be weekly safety calls with all participating 
institutions. During the neoadjuvant portion of the study there will be monthly calls with all 
participating institutions 
13.2 
Robert H. Lurie Comprehensive Cancer Center’s Data Safety Monitoring Committee  
BTCRC AHQ will provide the following for the Robert H. Lurie Comprehensive Cancer Center’s DSMC 
to review: 
 Adverse event/ serious adverse event summary report 
 Monitoring reports 
 Audit results if applicable 
 Study accrual patterns 
 Data delinquency  
 Protocol deviations 
 Annual report, prior to submission to the FDA (if the study is under an IND). 
 
The Robert H. Lurie Comprehensive Cancer Center’s DSMC will conduct a comprehensive study 
review semi-annually, based on the date the study was originally opened with NU. Ad hoc reviews may 
be performed as necessary to ensure patient safety and data integrity. Documentation of DSMC reviews 
will be provided to sponsor-investigator and BTCRC AHQ.  Issues of immediate concern by the DSMC 
will be brought to the attention of the sponsor-investigator and other regulatory bodies as appropriate.  
The sponsor-investigator will work with BTCRC AHQ to address the DSMC’s concerns.   
 
Link to the Robert H. Lurie Comprehensive Cancer Center’s Data and Safety Monitoring Plan: 
https://www.cancer.northwestern.edu/docs/research/data-safety-monitoring-plan.pdf 
13.3 
DSMC Review of Safety Data 
The Sponsor Investigator and the study team will review all available safety data prior to making dose 
de-escalation decisions. Once a decision has been reached, the official decision and the supporting safety 
data will be submitted to the NU DSMC. Treatment of additional subjects may not proceed until the 
DSMC approves the dosing decision for the next stage. This process will also apply during any interim 
analyses. 
13.4 
Data Quality Oversight Activities 
Remote validation of the EDC system data will be completed on a continual basis throughout the life 
cycle of the study.  Automated edit check listings will be used to generate queries in the EDC system 
and transmitted to the site to address in a timely fashion. Corrections will be made by the study site 
personnel. 
 
The level of risk attributed to this study requires high-intensity monitoring, as outlined in the DSMP. 
This study will be monitored in accordance with the study phase and risk level with oversight from the 
NU Data and Safety Monitoring Committee. For cause visits may occur as necessary. The database will 
be monitored regularly in house and if significant discrepancies arise, an onsite monitoring visit will be 
scheduled. Monitoring will be conducted by adequately qualified HCRN employees. During onsite 
monitoring visits, source documents will be reviewed for verification of agreement with data entered 
into the EDC system.  It is important for the site investigator and their relevant personnel to be available 

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for a sufficient amount of time during the monitoring visits or audit, if applicable. The site investigator 
and institution guarantee access to source documents by Big Ten CRC AHQ or its designee. 
 
The trial site may also be subject to quality assurance audit by Bayer or Genentech Inc or their designee 
as well as inspection by appropriate regulatory agencies. 
13.5 
Compliance with Trial Registration and Results Posting Requirements 
Under the terms of the Food and Drug Administration Modernization Act (FDAMA) and the Food and 
Drug Administration Amendments Act (FDAAA), the sponsor-investigator of the trial is solely 
responsible for determining whether the trial and its results are subject to the requirements for 
submission to the Clinical Trials Data Bank, http://www.clinicaltrials.gov. All results of primary and 
secondary objectives must be posted to CT.gov within a year of completion. The sponsor-investigator 
has delegated responsibility to Big Ten CRC AHQ for registering the trial and posting the results on 
clinicaltrials.gov. Information posted will allow subjects to identify potentially appropriate trials for 
their disease conditions and pursue participation by calling a central contact number for further 
information on appropriate trial locations and study site contact information. 
 
14. 
DATA HANDLING AND RECORD KEEPING 
14.1 
Data Management 
Big Ten CRC AHQ will serve as the Clinical Research Organization for this trial. Data will be collected 
through a web-based clinical research platform compliant with Good Clinical Practices and Federal 
Rules and Regulations. Big Ten CRC AHQ personnel will coordinate and manage data for quality 
control assurance and integrity. All data will be collected and entered into the EDC system by study site 
personnel from participating institutions.   
14.2 
Case Report Forms and Submission 
Generally, clinical data will be electronically captured in the EDC system and correlative results will be 
captured in the EDC system or other secure database(s). If procedures on the study calendar are 
performed for standard of care, at minimum, that data will be captured in the source document. Select 
standard of care data will also be captured in the EDC system, according to study-specific objectives. 
Please see the Data and Safety Oversight Process (DSOP) guidelines for further details.  
 
The completed dataset is housed at Big Ten CRC AHQ and is the sole property of the sponsor-
investigator’s institution. It should not be made available in any form to third parties, except for 
authorized representatives of appropriate Health/Regulatory Authorities, without written permission 
from the sponsor-investigator and Big Ten CRC AHQ. After the initial publication, the complete data 
set will be available to all Big Ten CRC institutions. 
14.3 
Record Retention 
To enable evaluations and/or audits from Health Authorities/Big Ten CRC AHQ, the site investigator 
agrees to keep records, including the identity of all subjects (sufficient information to link records; e.g., 
hospital records), all original signed informed consent forms, copies of all source documents, drug 
diaries, and detailed records of drug disposition.  All source documents are to remain in the subject’s file 

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and retained by the site investigator in compliance with local and federal regulations. No records will be 
destroyed until Big Ten CRC AHQ confirms destruction is permitted. 
14.4 
Confidentiality 
There is a slight risk of loss of confidentiality of subject information.  All records identifying the 
subjects will be kept confidential and, to the extent permitted by the applicable laws and/or regulations, 
will not be made publicly available. Information collected will be maintained on secure, password 
protected electronic systems. Paper files that contain personal information will be kept in locked and 
secure locations only accessible to the study site personnel.  
 
Subjects will be informed in writing that some organizations including the sponsor-investigator and 
his/her research associates, Big Ten CRC AHQ, Bayer, Genentech Inc, IRB, or government agencies, 
like the FDA, may inspect their medical records to verify the information collected, and that all personal 
information made available for inspection will be handled in strictest confidence and in accordance with 
local data protection laws. 
 
If the results of the study are published, the subjects’s identity will remain confidential. 
14.5 
Publication Policy 
All potential publications and/or data for potential publications (e.g., manuscripts, abstracts, posters, 
clinicaltrials.gov releases, etc.) must be approved in accordance with the Data Safety Monitoring 
Committee (DSMC) Data Release Policies and Processes. The investigator is expected to use only 
DSMC-approved data and statistical analyses any time they are disseminating trial data. The investigator 
must send a copy of the draft communication materials (e.g., abstract, poster, manuscript, etc.) to the 
study’s biostatistician and assigned Quality Assurance Manager (QAM) 
[CROqualityassurance@northwestern.edu] to confirm that the DSMC-approved data and statistical 
analyses are used appropriately. 
 
Link to the DSMC Data Release Policies and Processes:  
https://www.cancer.northwestern.edu/docs/research/publication-policies.pdf 
15. 
ETHICS 
15.1 
Institutional Review Board (IRB) Approval 
The final study protocol and the final version of the informed consent form must be approved in writing 
by an IRB.  The site investigator must submit written approval by the IRB to Big Ten CRC AHQ before 
he or she can enroll subjects into the study.   
 
The site investigator is responsible for informing the IRB of any amendment to the protocol in 
accordance with local requirements.  In addition, the IRB must approve all advertising used to recruit 
subjects for the study.  The protocol must be re-approved by the IRB as local regulations require.  
 
Progress reports and notifications of adverse events will be provided to the IRB according to local 
regulations and guidelines. 

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15.2 
Ethical Conduct of the Study 
The study will be performed in accordance with ethical principles originating from the Declaration of 
Helsinki. Conduct of the study will be in compliance with ICH Good Clinical Practice, and with all 
applicable federal (including 21 CFR parts 56 & 50), state, or local laws. 
15.3 
Informed Consent Process 
The site investigator will ensure the subject is given full and adequate oral and written information about 
the nature, purpose, possible risks and benefits of the study.  Subjects must also be notified they are free 
to discontinue from the study at any time.  The subject should be given the opportunity to ask questions 
and allowed time to consider the information provided. 
 
The subject’s signed and dated informed consent must be obtained before conducting any procedure 
specifically for the study.  The site investigator must store the original, signed informed consent form.  
A copy of the signed informed consent form must be given to the subject. 
 
16. 
TABLE OF ABBREVIATIONS 
 
Abbreviation 
Definition 
IND 
Investigational new drug 
PSA 
Prostate specific antigen 
PTEN 
Phosphatase and tensin homolog 
PK 
Pharmacokinetic 
PCWG3 
Prostate Cancer Working Group 3 
ECOG 
Eastern Cooperative Oncology Group 
CRPC 
Castration resistant prostate cancer 
ADT 
Androgen deprivation therapy 
DLT 
Dose limiting toxicity 
RP 
Radical prostatectomy
RT 
Radiation therapy 
MFS 
Metastasis free survival 
IHC 
Immunohistochemistry 
MRD 
Minimal residual disease 
AR 
Androgen receptor 
PI3K 
Phosphoinositide 3-Kinase
AKT 
Protein kinase B  
pCR 
Pathologic complete response 
H&E 
Hematoxylin and eosin 
NCI CTCAE  
National Cancer Institute Common Terminology Criteria for Adverse Events 
Hgb 
Hemoglobin 
ANC 
Absolute neutrophil count 
AST 
Aspartate aminotransferase 
ALT 
Alanine aminotransferase 
HgA1c 
Hemoglobin A1C 
HBV 
Hepatitis B  

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HBsAg 
Hepatitis B surface antigen 
HIV 
Human immunodeficiency virus 
HCV 
Hepatitis C virus 
NYHA 
New York Heart Association 
IBD 
Inflammatory bowel disease 
CYP3A 
Cytochrome P450 3A
PI 
Primary investigator
ULN 
Upper limit of normal 
Big Ten CRC 
Big Ten Cancer Research Consortium
AHQ 
Administrated headquarters
EDC 
Electronic data capture 
BID 
Twice per day  
mg 
Milligram  
qday 
Once per day  
ADL 
Activities of daily living 
PFTs 
Pulmonary function tests 
eCRF 
Electronic case report form 
AE 
Adverse event 
CBC 
Complete blood count with differential 
CMP  
Complete metabolic profile 
TNM 
Tumor Node Metastasis 
AJCC  
American Joint Committee on Cancer
FFPE 
Formalin fixed paraffin embedded 
CLM 
Correlative Laboratory Manual 
ctDNA 
Circulating tumor DNA 
GR 
Glucocorticoid receptor 
PR 
Partial response 
PD 
Progressive disease
SD 
Stable disease  
ATP 
Adenosine triphosphate 
IB 
Investigator’s brochure
SAE 
Serious adverse event 
AESI 
Adverse event of special interest 
SDEA 
Safety data exchange agreement
IRB 
Investigational Review Board 
DSMC 
Data and Safety Monitoring Committee 
NU 
Northwestern University 
 
 

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17. 
REFERENCES 
 
1. Siegel RL et al. Cancer statistics, 2019. CA Cancer J Clin. 2019 Jan;69(1):7-34. 
2. Tamada S et al. Time to progression to castration-resistant prostate cancer after commencing 
combined androgen blockade for advanced hormone-sensitive prostate cancer. Oncotarget. 2018 
Dec;9(97):36966-36974.  
3. Eggener SE et al. Predicting 15-year prostate cancer specific mortality after radical prostatectomy. J 
Urol. 2011 Mar;185(3):869-75. 
4. Brockman JA et al. Nomogram predicting prostate cancer-specific mortality for men with 
biochemical recurrence after radical prostatectomy. Eur Urol. 2015 Jun;67(6):1160-67.  
5. McKay RR et al. Post prostatectomy outcomes of patients with high-risk prostate cancer treated with 
neoadjuvant androgen blockade. Prostate Cancer Prostatic Dis. 2018 Sep;21(3):364-372.  
6. Velho et al. Molecular characterization and clinical outcomes of primary Gleason pattern 5 prostate 
cancer after radical prostatectomy. JCO Precis Oncol. 2019 Oct;3:10.1200/PO.19.00081. 
7. Jamaspishvili T et al. Clinical implications of PTEN loss in prostate cancer. Nat Rev Urol. 2019 
Apr;15(4):222-234.  
8. Cancer Genome Atlas Research, N. The molecular taxonomy of primary prostate cancer. Cell. 
2015;163:1011–1025. 
9. Troyer, D. A. et al. A multicenter study shows PTEN deletion is strongly associated with seminal 
vesicle involvement and extracapsular extension in localized prostate cancer. Prostate. 
2015;75:1206–1215. 
10.  Lotan, T. L. et al. Analytic validation of a clinical-grade PTEN immunohistochemistry assay in 
prostate cancer by comparison with PTEN FISH. Mod. Pathol. 2016;29:904–914. 
11. Ahearn, T. U. et al. A prospective investigation of PTEN loss and ERG expression in lethal prostate 
cancer. J. Natl Cancer Inst. 2016;108, djv34. 
12. Wise et al. Prostate cancer, PI3K, PTEN and prognosis. Clin Sci (Lond). 2017 Feb;131(3):197-210. 
13. Yoshimoto, M. et al. FISH analysis of 107 prostate cancers shows that PTEN genomic deletion is 
associated with poor clinical outcome. Br. J. Cancer. 2007;97:678–685. 
14. Krohn, A. et al. Genomic deletion of PTEN is associated with tumor progression and early PSA 
recurrence in ERG fusion-positive and fusion-negative prostate cancer. Am. J. Pathol. 
2012;181:401–412.  
15. Troyer, D. A. et al. A multicenter study shows PTEN deletion is strongly associated with seminal 
vesicle involvement and extracapsular extension in localized prostate cancer. Prostate. 
2015;75:1206–1215. 
16. Yoshimoto, M. et al. Interphase FISH analysis of PTEN in histologic sections shows genomic 
deletions in 68% of primary prostate cancer and 23% of high-grade prostatic intra-epithelial 
neoplasias. Cancer Genet Cytogenet. 2006;169:128–137. 
17. Sircar, K. et al. PTEN genomic deletion is associated with p-Akt and AR signalling in poorer 
outcome, hormone refractory prostate cancer. J. Pathol. 2009;218:505–513. 

Big Ten Cancer Research Consortium 
 
 
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Page 57 of 57 
18. Bismar, T. A. et al. PTEN genomic deletion is an early event associated with ERG gene 
rearrangements in prostate cancer. BJU Int. 2011;107:477–485. 
19. Lotan, T. L. et al. PTEN protein loss by immunostaining: analytic validation and prognostic 
indicator for a high risk surgical cohort of prostate cancer patients. Clin. Cancer Res. 2011;17:6563–
6573. 
20. Carver, B. S. et al. Reciprocal feedback regulation of PI3K and androgen receptor signaling in 
PTENdeficient prostate cancer. Cancer Cell. 2011;19:575–586. 
21. Thomas, C. et al. Synergistic targeting of PI3K/AKT pathway and androgen receptor axis 
significantly delays castration-resistant prostate cancer progression in vivo. Mol. Cancer Ther. 
2013;12:2342–2355.  
22. Marques, R. B. et al. High efficacy of combination therapy using PI3K/AKT inhibitors with 
androgen deprivation in prostate cancer preclinical models. Eur. Urol. 2015;67:1177–1185.  
23. Schwartz, S. et al. Feedback suppression of PI3Kalpha signaling in PTEN-mutated tumors is 
relieved by selective inhibition of PI3Kbeta. Cancer Cell. 2015;27:109–122. 
24. Kumar S, Shelley M, Harrison C, Coles B, Wilt TJ, Mason MD. Neo-adjuvant and adjuvant 
hormone therapy for localised and locally advanced prostate cancer. Cochrane Database Syst Rev. 
2006 Oct 18;(4):CD006019. 
25. Taplin ME et al. Intense androgen-deprivation therapy with abiraterone acetate plus leuprolide 
acetate in patients with localized high-risk prostate cancer: results of a randomized phase II 
neoadjuvant study. J Clin Oncol. 2014 Nov;32(33):3705-15. 
26. Montgomery B et al. Neoadjuvant enzalutamide prior to prostatectomy. Clin Cancer Res. 2017 
May;23(9):2169-2176.   
27. McKay RR et al. Evaluation of intense androgen deprivation before prostatectomy: a randomized 
phase II trial of enzalutamide and leuprolide with or without abiraterone. J Clin Oncol. 2019 
Apr;37(11):923-931.  
28. Saura C et al. A first-in-human phase I study of the ATP-competitive AKT inhibitor ipatasertib 
demonstratets robust and safe targeting of AKT in patients with solid tumors. Cancer Discov. 2017 
Jan;7(1):102-113. 
29. Kim et al. Ipatasertib plus paclitaxel versus placebo plus paclitaxel as first-line therapy for 
metasatatic triple-negative breast cancer (LOTUS): a multicentre, randomized, double-blind, 
placebo-controlled, phase 2 trial. Lancet Oncol. 2017 Oct;18(10):1360-1372.  
30. De Bono JS et al. Randomized phase II study evaluating Akt blockade with Ipatasertib, in 
combination with abiraterone, in patients with metastatic prostate cancer with and without PTEN 
loss. Clin Cancer Res. 2019 Feb;25(3):928-936.  
31. Lotan et al. Analytic validation of a clinical-grade PTEN immunohistochemistry assay in prostate 
cancer by comparison with PTEN FISH. Mod Pathol. 2016 Aug;29(8):904-914. 
32. Fizazi et al. Darolutamide in nonmetastatic, castration-resistant prostate cancer. N Engl J Med. 2019 
Mar;380(13):1235-1246.