Clinical trial NCT05501912: A Study of ABM-1310 in Patients With BRAF V600-Mutant Advanced Solid Tumors
Official title: A Phase I, Open-Label, Multicenter, Dose Escalation and Expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Preliminary Anti-Cancer Activity of ABM-1310 in Patients With BRAF V600-Mutant Advanced Solid Tumors
Study type: INTERVENTIONAL
Overall status: TERMINATED
Phase: PHASE1
Conditions: Advanced Solid Tumor
BRAF V600 Mutation
Keywords: Melanoma
Non-small Cell Lung Cancer
Cholangiocarcinoma
intracranial solid tumor
Lead sponsor: ABM Therapeutics Shanghai Company Limited
Sponsor class: INDUSTRY
First posted: 2022-08-16
Enrollment: 20
Sex: ALL
Minimum age (years): 18
Maximum age (years): 80
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Intervention model description: The study will be conducted in two stages:

Dose escalation stage: To determine MTD/RP2D and evaluate the safety and tolerability of ABM-1310 monotherapy.

Dose expansion stage: To further determine RP2D and evaluate the preliminary efficacy of ABM-1310 monotherapy.
Primary purpose: TREATMENT

Brief summary: This is a Phase I, Open-Label, Multicenter, Dose Escalation and Expansion Study to evaluate the safety, tolerability, pharmacokinetics, and preliminary anti-cancer activity of ABM-1310 in patients with BRAF V600-Mutant advanced solid tumors. This study consists of two stages: dose escalation and dose expansion. During the dose escalation stage, a classic "3+3" design will be used to guide dose escalation to determine MTD and RP2D. The dose expansion stage will be initiated at the MTD or the optimal dose determined by the Safety Monitoring Committee (SMC ) as a fixed dose level (MTD or the optimal dose needs to be reviewed by the SMC and subjects are safe and tolerable at that dose level).

Detailed description: This is a Phase I, Open-Label, Multicenter, Dose Escalation and Expansion Study to evaluate the safety, tolerability, pharmacokinetics, and preliminary anti-cancer activity of ABM-1310 in patients with BRAF V600-Mutant advanced solid tumors. The primary objective of this study is to evaluate the safety and tolerability of ABM-1310 monotherapy, and to determine MTD and RP2D. The study will be conducted in two stages:

Dose escalation stage: The dose escalation will be guided by a "3+3" design. In this study, the actual dose escalation will be based on a priming dose one level below the highest safe dose or two levels below the MTD that has been tested in US clinical trials when the enrolment of the China study actually initiates, and subsequent escalated doses may be adjusted as appropriate (e.g., the escalated doses following 150 mg BID in the China study may be adjusted to 200 mg BID, 250 mg BID and 300 mg BID. The actual priming dose and subsequent escalated doses for the China study are determined by the SMC).

Dose expansion stage: Subjects will begin to receive oral doses of ABM-1310, BID, for 28-day cycles at a fixed dose level (as determined at the dose escalation stage).The dose expansion stage is expected to include the following two cohorts of advanced solid tumors with BRAF V600 mutations:

Cohort 1: primary extracranial solid tumors, subjects with BMs preferentially enrolled, up to 15 patients per tumor type; Cohort 2: primary intracranial solid tumors, N = up to 30 patients.

Eligibility criteria: Inclusion Criteria:

1. Subjects who are able to understand and voluntarily sign informed consent forms (ICFs).
2. Male and female subjects at the age of ≥18 and ≤80 at the time of screening.
3. Patients with histologically or cytologically-confirmed, locally advanced, or metastatic solid tumors with (a) failure of prior standard therapy, (b) no standard therapy available, or (c) for whom standard therapy is not applicable considered by the patient or treating physician. There is no limit to the number of prior treatment lines. Subjects who were previously treated with BRAF and/or MEK inhibitors are allowed to be enrolled in this study.
4. Documentation of positive BRAF V600 mutation is required for enrollment (the blood BRAF V600 test report is received at the dose-escalation stage). Representative tumor specimens suitable for confirmation of BRAF V600 mutations by retrospective analysis are required (for dose-expansion stage only). It is recommended to provide sufficient fresh/archived tumor tissue samples (formalin-fixed paraffin-embedded tumor specimens \[preferred\]) or 5-10 available unstained sections of good quality for verification of BRAF V600 mutation status at the central laboratory. For any subject who is unable to provide suitable and adequate tumor specimens, re-biopsy (with controllable safety) can be performed in a non-mandatory manner if it is feasible as assessed by the investigator and the subject gives informed consent; if re-biopsy is impossible or refused by the subject, his/her eligibility for enrollment shall be confirmed by both the investigator and the sponsor.
5. Patients with BMs/primary intracranial solid tumors that are asymptomatic, or that are symptomatic but on a stable or decreasing dose of steroids for at least 2 weeks are eligible for enrollment. The specific criteria are as follows:

   * Subjects with inactive and asymptomatic BMs/primary intracranial solid tumors;
   * Subjects who have active, mild neurological signs and symptoms currently requiring no therapy with steroids, and have no history of epileptic seizure within 2 weeks prior to initiation of treatment;
   * Subjects who have active, neurological signs and symptoms and were on a stable or gradually reducing dose up to 4 mg of dexamethasone (or equivalent) per day within 2 weeks prior to initiation of treatment;
6. Subjects who only have evaluable lesions are allowed to be included for the dose escalation stage. They must have at least one measurable lesion (intracranial or extracranial) as defined by RECIST V1.1 criteria or modified RECIST v1.1 for subjects with BMs or the RANO criteria for subjects with primary intracranial solid tumors during screening at the dose expansion stage. Lesions previously treated with radiotherapy shall not be deemed as target lesions unless significant progression as shown on imaging.

   o For BMs from solid tumors;At least one measurable extracranial lesion is required if the longest diameter of the intracranial lesion is less than 0.5 cm (for dose expansion stage only).Subjects with measurable intracranial lesions of 0.5-3 cm in longest diameter (the lower limit of the longest diameter is defined according to the modified RECIST V1.1 criteria are allowed for the study, and measurable extracranial lesions are not required.Subjects with intracranial lesions \> 3 cm in longest diameter are not eligible for the study.
7. ECOG score of 0 or 1 or Karnofsky PS score of ≥ 70.
8. Life expectancy \> 3 months.
9. Adequate organ function (no blood transfusion and no use of granulocyte colony-stimulating factor, or other hematopoietic stimulator support within 2 weeks before the first administration of the study drug) confirmed as evidenced by:

   * Absolute Neutrophil Count (ANC) ≥ 1.5×10\^9/L;
   * Hemoglobin (Hgb) ≥ 90 g/dl;
   * Platelets (Plt) ≥ 75×10\^9/L;
   * AST/ALT ≤ 2.5 x ULN or ≤ 5.0 x ULN if liver metastases are present;
   * Bilirubin total ≤ 1.5 x ULN, or bilirubin direct \< ULN for patients with bilirubin total levels \>1.5 ULN;
   * Serum creatinine \< 1.5 x ULN or creatinine clearance \> 50 mL/min (as calculated via Cockcroft-Gault formula based on the actual body weight of the subject ;
   * International normalized ratio (INR) and activated partial thromboplastin time (APTT) ≤ 1.5 x ULN for subjects not receiving anticoagulant therapy, and INR is maintained within the standard range of treatment prior to starting study drug for subjects receiving anticoagulant therapy.
10. Hepatitis B virus surface antigen (HBsAg) is negative, or HBsAg is positive but HBV DNA titer is below the lower limit of positive detection of the participating site at screening.

    o HBsAg-positive or HBV-DNA positive subjects shall be managed according to institutional guidelines (anti-HBV therapy, where appropriate, and close monitoring of liver function and HBV-DNA replication shall be performed).
11. Negative hepatitis C virus (HCV) antibody test or positive HCV antibody test at the time of screening followed by a negative HCV-RNA test result.

    o HCV-RNA testing is performed only for subjects with a positive HCV antibody test result.
12. Negative HIV test result at the time of screening.
13. All pre-menopausal women and women with menolipsis \< 12 months should have a negative pregnancy test result within 7 days before starting study treatment.
14. Must agree to take sufficient contraceptive methods before initiation of study treatment, during the study, and for at least 3 months after the last dose of the study drug.
15. Subjects who are able to swallow a capsule in whole (without chewing, crushing, or opening).

Exclusion Criteria:

1. Women who are pregnant or breast-feeding.
2. Subjects with history of neoplasm malignant within 5 years prior to screening, excluding cured carcinoma in situ of cervix, non-melanoma skin cancer, localized prostate cancer and other tumors/cancers that have undergone radical treatment and shown no signs of disease for at least 3 years (This exclusion criterion is only applicable for dose expansion stage. For the dose escalation stage, any patient with double primary malignant solid tumors who can indeed benefit from this study as confirmed by the investigator is eligible for the screening; however, those with any combined primary hematological malignant tumor shall be excluded).
3. Subjects with intracranial hypertension or associated risks (e.g., intracranial infection, intracranial hemorrhage).
4. Subjects with clinically uncontrolled pleural effusion, pericardial effusion, or ascites who, in the judgement of the investigator, are not eligible for enrollment.
5. Subjects with cancerous meningitis (leptomeningeal disease \[LMD\]).
6. Subjects with history of symptomatic stroke within 6 months prior to initiation of study treatment.
7. Subjects with epileptic seizure within 14 days prior to initiation of study treatment.
8. Impaired cardiac function or clinically significant cardiovascular disorder, including but not limited to any of the following:

   * Left Ventricular Ejection Fraction (LVEF) \< 50% as determined via cardiac ultrasound.
   * Long QT syndrome congenital.
   * QTcF (as corrected via Fridericia formula) ≥ 450 ms (males) or 470 ms (females) at screening.
   * Second-degree type II AV block or third-degree AV block.
   * Unstable angina pectoris within 6 months prior to starting study drug.
   * Acute myocardial infarction within 6 months prior to starting study drug.
   * New York Heart Association (NYHA) Class II or higher heart failure within 6 months prior to study treatment.
   * Ventricular arrhythmias \> Grade 2 within 6 months prior to study treatment.
   * Poorly controlled hypertension as defined as systolic blood pressure of \>160 mmHg or diastolic blood pressure of \> 100 mmHg despite use of antihypertensive medications.
   * Combined with any pulmonary embolism, or presence of any serious deep vein thrombosis on lower extremities that require medical interventions such as vena cava filter insertion at the screening .
9. Poorly controlled diabetes (fasting glucose \> 10 mmol/L or Glycosylated Haemoglobin (HbA1c) \> 8%) despite standard drug therapy.
10. Subjects with:

    * CTCAE grade 2 or higher unresolved diarrhea, or
    * Impaired gastrointestinal (GI) function or GI diseases that may significantly alter the absorption of ABM-1310 (e.g., ulcerative diseases, uncontrolled nausea, vomiting, diarrhea, malabsorption syndrome, or small bowel resection)
11. Previous or current, Grade 2 or higher eye disorder, such as retinal vein occlusion (RVO).
12. Severe chronic or active infections requiring intravenous anti-infective therapy within 2 weeks prior to study treatment, including but not limited infectious complications leading to hospitalization, bacteremia, severe pneumonia, or active tuberculosis.

    o Subjects with local fungal infections of skin or nails are allowed for enrollment. Subjects receiving prophylactic antibiotics (e.g., to prevent urinary tract infections or exacerbations of chronic obstructive pulmonary disease) are eligible for study (except for antibiotics prohibited by the protocol).
13. Subjects with solid organ or hematopoietic stem cell transplant within the past 5 years.
14. Patients receiving chemotherapy, targeted therapy, or immunotherapy within 4 weeks prior to study treatment, including the followings:

    * Receiving nitrosourea or mitomycin-C within 6 weeks prior to study treatment.
    * Receiving fluorouracil or small molecule targeted drug therapy within 5 half-lives or 2 weeks (whichever is longer) prior to study treatment.
    * Receiving Chinese herbal or patent medicine within 2 weeks prior to study treatment for anti-tumor indications.
15. Subjects receiving radical radiotherapy or radiotherapy to more than 30% of bone marrow or whole-brain radiotherapy (WBRT) within 4 weeks or palliative radiotherapy for non-target lesions with the aim of relieving symptoms (e.g., bone radiotherapy for pain relief) or stereotactic radiosurgery (including SRS) within 2 weeks prior to starting study drug.
16. Adverse reactions resulted from prior antitumor therapy that have not resolved to baseline or ≤ grade 1 (CTCAE 5.0), except alopecia or ≤ grade 2 peripheral neuropathy, hypothyroidism stabilized by hormone replacement therapy, etc.
17. Subjects who have undergone major surgery within 4 weeks prior to study treatment or who have not recovered from side effects of such therapy or who are expected to undergo major surgery during study treatment. However, a minimum of 2 weeks recovery time from major surgery to starting study drug is required if in investigator's opinion the patient has recovered from such major surgery.
18. Subjects currently receiving therapeutic doses of warfarin sodium or any other coumarin-derivative anticoagulants.
19. Subjects who have received systemic corticosteroids within 2 weeks prior to starting study drug or who have not recovered from side effects of such treatment, excluding conditions described in inclusion criteria for subjects with BMs.

    Note: subjects with topical, intranasal, or inhaled corticosteroids administered; adrenal replacement steroid doses of ≤ 10 mg/day prednisone or the equivalent given; single-use glucocorticoids administered for prophylaxis of contrast media allergy prior to contrast-enhanced imaging are eligible for the study.
20. Subjects who are currently receiving treatment with medication that has a known risk to prolong the QT interval and cannot either be discontinued or switched to a different medication prior to starting study drug.
21. History of alcohol abuse or addiction within 3 months prior to the first dose.
22. Known, documented or suspected history of drug abuse, expect opioids prescribed for pain relief, etc.
23. Past or current evidence of any condition, therapy, or laboratory abnormality that, in the opinion of the investigator, might affect the results of the study, and interfere with the subject's participation and study compliance.
24. Other severe and/or uncontrolled concomitant diseases that could cause unacceptable safety risks or compromise compliance with the study protocol.
25. Other conditions that, in the judgement of the investigator, are inappropriate for enrollment in the study.

Primary outcomes:
measure: Maximum Tolerated Dose (MTD)
timeFrame: From the enrollment of subjects to the end of Cycle 1 (each cycle is 28 days) or up to treatment discontinuation, whichever occurs first, assessed up to 33 days.
measure: Recommended Phase 2 Dose (RP2D)
timeFrame: From the enrollment of subjects to the end of Cycle 1 (each cycle is 28 days) or up to treatment discontinuation, whichever occurs first, assessed up to 33 days.
measure: Dose Limiting Toxicity (DLT)
timeFrame: Single dose PK observation period (5 days) and Cycle 1 (28 days) (33 days in total)
measure: The incidence of treatment-related adverse events AE(s)
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal laboratory values
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal vital signs
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal physical examinations
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal ophthalmic evaluation
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal ECG
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal ECOG
timeFrame: Up to 28 days from treatment discontinuation
measure: Number of participants with abnormal Karnofsky PS
timeFrame: Up to 28 days from treatment discontinuation
Secondary outcomes:
measure: Area under the concentration time curve (AUC)
timeFrame: only 5 days prior to dose escalation stage
measure: Maximum plasma concentration (Cmax)
timeFrame: only 5 days prior to dose escalation stage
measure: Time to maximum plasma concentration (Tmax)
timeFrame: only 5 days prior to dose escalation stage
measure: Half-life (T1/2)
timeFrame: only 5 days prior to dose escalation stage
measure: Apparent plasma clearance (CL/F)
timeFrame: only 5 days prior to dose escalation stage
measure: Apparent volume of distribution (Vz/F)
timeFrame: only 5 days prior to dose escalation stage
measure: Area under the concentration time curve (AUC)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Maximum plasma concentration (Cmax)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Time to maximum plasma concentration (Tmax)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Half-life (T1/2)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Apparent plasma clearance (CL/F)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Apparent volume of distribution (Vz/F)
timeFrame: Up to Day 1, Day 8, Day 15, Day 22 and Day 28 of Cycle 1. Up to Day 1 and Day 2 of Cycle2. After Cycle2, tests every 2 cycles (each cycle is 28 days)
measure: Objective Response Rate (ORR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Disease Control Rate (DCR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Duration of Response (DOR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Progression free survival (PFS)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Intracranial Objective Response Rate (ORR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Intracranial Disease Control Rate (DCR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Intracranial Duration of Response (DOR)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Intracranial Progression free survival (PFS)
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Deepness of Response（DPR）
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
measure: Intracranial Deepness of Response（DPR）
timeFrame: From the enrollment of subjects to the time of disease progression in radiological imaging or death from any cause, whichever occurs first, assessed approximately 12 months.
Other outcomes:
Locations:
city: Beijing
country: China
facility: Beijing Cancer Hospital
state: Beijing
city: Beijing
country: China
facility: Beijing Tsinghua Changgeng Hospital
state: Beijing
city: Xuzhou
country: China
facility: Xuzhou Medical University Affiliated Hospital
state: Jiangsu
city: Nanchang
country: China
facility: The First Affiliated Hospital of Nanchang University
state: Jiangxi
city: Changchun
country: China
facility: Jilin Cancer Hospital
state: Jilin
city: Jinan
country: China
facility: Affiliated Cancer Hospital of Shandong First Medical University (Shandong Cancer Institute, Shandong Cancer Hospital)
state: Shandong
city: Shanghai
country: China
facility: Shanghai Chest Hospital
state: Shanghai
city: Shanghai
country: China
facility: Zhongshan Hospital Affiliated to Fudan University
state: Shanghai
city: Shanghai
country: China
facility: Huashan Hospital Affiliated to Fudan University
state: Shanghai
city: Shanghai
country: China
facility: Shanghai East Hospital
state: Shanghai
Study officials:
affiliation: Shanghai East Hospital
name: Jin Li, M.D.
role: PRINCIPAL_INVESTIGATOR
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