Clinical trial NCT05706129: A Study to Assess Safety, Tolerability and Imaging Characteristics of [68Ga]Ga-DPI-4452 and to Assess Safety, Tolerability, and Efficacy of [177Lu]Lu-DPI-4452 in Participants With Unresectable Locally Advanced or Metastatic Solid Tumors
Official title: A Multicenter, Open-Label, Non-Randomized Phase 1/2 Study to Assess Safety, Tolerability and Imaging Characteristics of [68Ga]Ga-DPI-4452 and to Assess Safety, Tolerability, and Efficacy of [177Lu]Lu-DPI-4452 in Patients With Unresectable Locally Advanced or Metastatic Solid Tumors
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: PHASE1
PHASE2
Conditions: Clear Cell Renal Cell Cancer (ccRCC)
Pancreatic Ductal Adenocarcinoma (PDAC)
Colorectal Cancer (CRC)
Urothelial Carcinoma (UC)
Indeterminate Renal Mass (IDRM)
Muscle Invasive Bladder Cancer (MIBC)
Head and Neck Cancer (H&N)
Triple Negative Breast Cancer (TNBC)
Squamous Non-Small Cell Lung Cancer (NSCLC)
Lead sponsor: Debiopharm International SA
Sponsor class: INDUSTRY
First posted: 2023-01-31
Enrollment: 270
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NON_RANDOMIZED
Intervention model: SEQUENTIAL
Primary purpose: TREATMENT

Brief summary: The main purpose of Part A of the study is to evaluate safety, tolerability and tracer uptake after a single intravenous (IV) administration of \[68Ga\]Ga-DPI-4452 for each tumor type such as clear cell renal cell cancer (ccRCC), pancreatic ductal adenocarcinoma (PDAC), and colorectal cancer (CRC); Part B: is to determine the recommended phase 2 dose (RP2D) \[maximum tolerated dose (MTD) or lower dose\] for \[177Lu\]Lu-DPI-4452 for each tumor type such as ccRCC, PDAC, CRC, and urothelial carcinoma (UC); Part C: is to evaluate the preliminary antitumor activity of \[177Lu\]Lu-DPI-4452 as monotherapy for each tumor type such as ccRCC, PDAC, CRC, and UC; Part D: is to assess the diagnostic concordance between \[68Ga\]Ga-DPI-4452 Positron Emission Tomography (PET) and the histopathology result of the Indeterminate Renal Mass (IDRM); Part E: is to assess \[68Ga\]Ga-DPI-4452 uptake in each tumour type such as UC, muscle invasive bladder cancer (MIBC), head and neck cancer (H\&N), triple negative breast cancer (TNBC), squamous non-small cell lung cancer (NSCLC), and any other tumor with locally confirmed carbonic anhydrase (CA) IX expression except ccRCC, CRC and PDAC.


Eligibility criteria: Inclusion Criteria:

Part A, B, and C:

* Written informed consent, dated and signed by the patient prior to any study-specific procedure.
* Part B and C are not conducted in the United States of America.
* Has histologically or cytologically confirmed, unresectable locally advanced or metastatic solid tumors of:
* Clear cell renal cell cancer (ccRCC) - participants must have received at least one line containing Tyrosine kinase inhibitor (TKI) treatment and at least one line containing immune checkpoint inhibitor treatment in metastatic setting, meaning at least two lines of treatment in metastatic setting.
* Pancreatic ductal adenocarcinoma (PDAC) - participants must have received at least one line of platinum- and/or gemcitabine-based regimen.
* Colorectal cancer (CRC) - participants must have received at least one line of FOLFIRINOX or FOLFOX/FOLFIRI in two lines in combination with anti-Vascular Endothelial Growth Factor (VEGF) or anti-Epidermal Growth Factor Receptor (EGFR).
* Participants with CRC or PDAC: availability of fresh biopsy, OR an archival biopsy/surgical specimen of the tumor (preferably, taken after last prior line of therapy).
* Presence of at least 1 non-irradiated tumor lesion detected at conventional imaging (computed tomography / magnetic resonance imaging (CT/MRI)) documented within 4 weeks prior to the \[68Ga\]Ga-DPI-4452 administration.
* Measurable disease per response evaluation criteria in solid tumors (RECIST) v1.1.

Part D:

Participants with imaging evidence of a single indeterminate renal mass (IDRM) of ≤ 7 cm in largest diameter (tumor stage cT1) on any conventional diagnostic imaging technique, suspicious for ccRCC and planned for total or partial nephrectomy, or interventional diagnostic (cystoscopy and retrograde pyelography or biopsy) within 90 days from planned \[68Ga\]Ga-DPI-4452 administration.

Part E:

Regardless of lines of treatment, participants with histologically or cytologically confirmed progressive, unresectable locally advanced or metastatic solid tumors of

* UC, including MIBC
* H\&N cancer
* TNBC
* Squamous NSCLC
* Any other indication with confirmed carbonic anhydrase IX (CA IX) expression excluding ccRCC, PDAC and CRC, upon Sponsor agreement.

Exclusion Criteria:

* Any major surgery within 12 weeks before enrolment.
* Inability to stay in the scanner bed with the arms resting out of the thoracic and abdominal fields (i.e., arms alongside the body or raised arm position) for the duration of the scan.

Part A:

* Has known hypersensitivity to the active substance, to any of the excipients of the DPI-4452, or to radiographic contrast agents.
* Bladder outflow obstruction or unmanageable urinary incontinence.
* Participants who have not had resolution of clinically significant toxic effects of prior systemic cancer therapy, surgery, or radiotherapy to Grade ≤1 (except for laboratory parameters specified above, Grade 2 alopecia, and/or stable Grade 2 sensory neuropathy, according to National Cancer Institute Common Terminology Criteria for Adverse Events \[NCI-CTCAE\]).
* Administration of a radiopharmaceutical within a period corresponding to 10 half-lives of the radionuclide used prior to injection of \[68Ga\]Ga-DPI-4452.
* Previous Carbonic anhydrase (CA) IX-targeting treatment.
* Prior external beam radiation therapy (EBRT) to more than 25% of the bone marrow, as judged by the Investigator.

Part B and Part C:

* Known hypersensitivity to the active substance, to any of the excipients of the DPI-4452, or to radiographic contrast agents.
* Bladder outflow obstruction or unmanageable urinary incontinence.
* Participants who have not had resolution of clinically significant toxic effects of prior systemic cancer therapy, surgery, or radiotherapy to Grade ≤1 (except for laboratory parameters specified above, Grade 2 alopecia, or stable Grade 2 sensory neuropathy, according to NCI-CTCAE).
* Administration of a radiopharmaceutical with therapeutic intent within a period of 6 months prior to injection of \[68Ga\]Ga-DPI-4452.
* Any previous CA IX-targeting treatment for non-oncological indication within 3 months prior to the \[177Lu\]Lu-DPI-4452 infusion; any previous CA IX-targeting treatment for any oncological indication.
* Participants who received any systemic antineoplastic therapy for the underlying disease and/or other investigational agents within a period which is ≤5 half-lives or ≤4 weeks (whichever is shorter).
* Inflammatory bowel disease (e.g Crohn's disease, ulcerative colitis, etc).

Part D:

* Known hypersensitivity to the active substance, to any of the excipients of the DPI-4452, or to radiographic contrast agents.
* Any previous CA IX-targeting treatment within 3 months prior to the \[68Ga\]Ga-DPI-4452 injection.
* Administration of a radiopharmaceutical within a period corresponding to 10 half-lives of the radionuclide used prior to injection of \[68Ga\]Ga-DPI-4452.
* Malignant disease, other than that being treated in this study. Exceptions include the following: malignancies that were treated curatively and have not recurred within 2 years prior to screening; treated basal cell or localized squamous skin carcinomas, localized or low grade (e.g., Gleason 3+3 or 3+4 with low prostate specific antigen) prostate cancer, superficial (non-muscle invasive) urothelial cancer, localized thyroid gland microcarcinoma, other in-situ carcinoma, or other malignancy for which participants are not on active antineoplastic therapy.
* Ongoing treatment with sulfonamides and/or coumarin derivatives (e.g., acenocoumarol, warfarin, phenprocoumon) within 2 weeks (or 5 half-lives, whichever is longer) prior to the \[68Ga\]Ga-DPI-4452 injection.

Part E:

* Known hypersensitivity to the active substance, to any of the excipients of the DPI-4452, or to radiographic contrast agents.
* Administration of a radiopharmaceutical within a period corresponding to 10 half-lives of the radionuclide used prior to injection of \[68Ga\]Ga-DPI-4452.
* Any previous CA IX-targeting treatment within 3 months prior to \[68Ga\]Ga-DPI-4452 injection.
* EBRT to more than 25% of the bone marrow, as judged by the Investigator.
* Malignant disease, other than that being treated in this study. Exceptions include the following: malignancies that were treated curatively and have not recurred within 2 years prior to screening; treated basal cell or localized squamous skin carcinomas, localized or low grade (e.g., Gleason 3+3 or 3+4 with low prostate specific antigen) prostate cancer, superficial (non-muscle invasive) urothelial cancer, localized thyroid gland microcarcinoma, other in-situ carcinoma, or other malignancy for which participants are not on active antineoplastic therapy.

Note: Other inclusion/exclusion criteria mentioned in the protocol may apply.

Primary outcomes:
measure: Part A: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
timeFrame: Up to Day 7
measure: Part B: Number of Participants Experiencing Dose-Limiting Toxicities (DLTs)
timeFrame: Cycle 1(each cycle = 28 or 42 days depending on every 4 weeks or 6 weeks dosing schedule)
measure: Part C: Objective Response Rate (ORR)
timeFrame: Up to 81 months
measure: Part D: Concordance Between [68Ga]Ga-DPI-4452 Uptake by PET Imaging and Assessment of Histological Characteristics of IDRM
timeFrame: Day 1
measure: Part E: Radiotracer Uptake at Lesion Level Identified by PET Imaging
timeFrame: Day 1
Secondary outcomes:
measure: Part A, B, and C: Concentration of [68Ga]Ga-DPI-4452 and [177Lu]Lu-DPI-4452 in Blood and Plasma
timeFrame: Part A: Pre-dose and at multiple time points up to 4 hours post-dose on Day 1; Parts B and C: Pre-dose and at multiple time points up to 72 hours post-dose of Cycles 1, 2 and 3 (84 days) (each cycle = 28 or 42 days depending on every 4 weeks or 6 weeks)
measure: Parts A, B, and C: Concentration of [68Ga]Ga-DPI-4452 and [177Lu]Lu-DPI-4452 in Urine
timeFrame: Part A: Pre-dose and at multiple time points up to 4 hours post-dose on Day 1; Parts B and C: Pre-dose and at multiple time points up to 48 hours post-dose of Cycle 1 (each cycle = 28 or 42 days depending on every 4 weeks or 6 weeks dosing schedule)
measure: Part A: Radioligand [68Ga]Ga-DPI-4452 PET Scan Time-Window for Optimal Imaging
timeFrame: Day 1
measure: Part B: Objective Response Rate (ORR)
timeFrame: Up to 81 months
measure: Parts B and C: Progression Free Survival (PFS) Rate at 6 Months
timeFrame: 6 months
measure: Parts B and C: Progression Free Survival (PFS)
timeFrame: Up to 81 months
measure: Parts B and C: Overall Survival (OS)
timeFrame: Up to 81 months
measure: Parts B and C: Duration of Response (DoR)
timeFrame: Up to 81 months
measure: Parts B and C: Disease Control Rate (DCR)
timeFrame: Up to 81 months
measure: Parts B, C, D, and E: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)
timeFrame: Up to 81 months
measure: Parts A, B, C, and E: Number of Positive Tumor Lesions Detected by Imaging
timeFrame: Part A and E: Day 1; Part B and C: Baseline
measure: Parts A, B, and C: Dosimetry [68Ga]Ga-DPI-4452 and [177Lu]Lu-DPI-4452
timeFrame: Part A: Day 1; Parts B and C: Cycle 1 (each cycle= 28 days)
measure: Part D: Assessment of Diagnostic Accuracy of [68Ga]Ga-DPI-4452 PET imaging
timeFrame: Day 1
Other outcomes:
Locations:
city: Melbourne
country: Australia
facility: Peter MacCallum Cancer Centre
city: Sydney
country: Australia
facility: UNSW Sydney, St Vincent's Hospital Sydney
city: Clermont-Ferrand
country: France
facility: Centre Jean Perrin
city: Dijon
country: France
facility: Centre Georges François Leclerc
city: Grenoble
country: France
facility: CHU de Grenoble-Alpes, Boulevard de la Chantourne
city: Lyon Cedex
country: France
facility: Centre Léon Bérard
city: Marseille
country: France
facility: AP-HM - Hopital de la Timone
city: Nantes
country: France
facility: CHU de Nantes
city: Toulouse
country: France
facility: IUCT - Oncopole
city: Vandœuvre-lès-Nancy
country: France
facility: CHRU de Nancy - Hopitaux de Brabois
Study officials:
References: