SUPRAME-ACTengine® IMA203 vs. Investigator's Choice of Treatment in Previously Treated, Unresectable or Metastatic Cutaneous Melanoma

Phase 3

Not yet recruiting

• Conditions: Melanoma, Cutaneous Malignant
• Interventions: Biological: IMA203; Biological: nivolumab plus relatlimab; Biological: lifileucel; Biological: nivolumab; Biological: pembrolizumab; Biological: ipilimumab; Drug: Dacarbazine; Drug: temozolomide; Drug: paclitaxel; Drug: paclitaxel plus carboplatin; Drug: Albumin-Bound Paclitaxel

• Registration Number: NCT06743126
• Lead Sponsor: Immatics US, Inc.

Brief Summary

This clinical trial is a prospective, multicenter, open-label, randomized, actively controlled, parallel-group Phase 3 clinical trial to evaluate the efficacy, safety and tolerability of treatment with IMA203 administered at the recommended phase 2 dose versus investigator's choice of treatment in patients with previously treated, unresectable or metastatic ...

Detailed Description

SCREENING: Patient eligibility will be determined by protocol inclusion/exclusion criteria including HLA (human leukocyte antigen) screening. Leukapheresis for potential manufacturing of the IMA203 cellular product may be performed, if patients are HLA-A\*02:01 positive and meet the eligibility criteria for leukapheresis.
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Basic Information
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Recruitment & Eligibility
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Study & Design

Study Timeline

• Status Verified: 2024-12
• Study Start: 2024-12
• Study First Submitted: 2024-12-11
• Study First Submitted QC: 2024-12-16
• Last Update Submitted: 2024-12-16
• Study First Posted: 2024-12-19
• Last Update Posted: 2024-12-19
• Primary Completion: 2028-01
• Study Completion: 2031-10

Recruitment & Eligibility

• Status: NOT_YET_RECRUITING
• Sex: All
• Target Recruitment: 360

Inclusion Criteria

• Pathologically confirmed and documented cutaneous melanoma- CM patients (including acral melanoma) with unresectable or metastatic disease
• HLA phenotype positive for the study
• Adequate selected organ function per protocol
• Eastern Cooperative Oncology Group (ECOG) performance status 0-1
• Disease progression (resistance, toxicity) on or after at least one PD-1 inhibitor, applied either as monotherapy or in combination with other therapies as treatment for unresectable or metastatic cutaneous melanoma
• Patients with BRAF mutation should have been treated with one prior line of BRAF-directed therapy (with or without a MEK inhibitor) prior to initial eligibility assessment, unless deemed not clinically indicated at Investigator's discretion due to concurrent medical condition, prior toxicity, or if declined by the patient
• Life expectancy more than 6 months
• Measurable disease according to Response Evaluation Criteria in Solid Tumors (RECIST 1.1)
• Female patient of childbearing potential must use adequate contraception from randomization until 12 months after the infusion of IMA203 or in line with the instructions provided for investigator's choice treatment (in the control arm)
• Male patient must agree to use effective contraception or be abstinent while on study and for 6 months after the infusion of IMA203 or in line with the instructions provided for investigator's choice treatment (in the control arm)
• The patient must have recovered from any side effects of prior therapy to Grade 1 or lower prior to randomization.

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Exclusion Criteria

• Primary mucosal or uveal melanoma and melanoma of unknown primary
• History of other malignancies (except for adequately treated basal or squamous cell carcinoma or carcinoma in situ) within the last 3 years
• Serious autoimmune disease Note: At the discretion of the investigator, these patients may be included if their disease is well controlled without the use of immunosuppressive agents.
• History of cardiac conditions as per protocol
• Prior allogenic stem cell transplantation or solid organ transplantation
• Concurrent severe and/or uncontrolled medical disease that could compromise participation in the study
• History of or current immunodeficiency disease or prior treatment compromising immune function at the discretion of the treating physician
• History of hypersensitivity to CY, FLU, or IL-2 or presence of any contraindications and other limitations for planned treatment with investigator's choice as laid down in the current versions of the respective PIs / SmPCs
• Known hypersensitivity to any of the rescue medications
• History of or current immunodeficiency disease or prior treatment compromising immune function at the discretion of the investigator
• Positive for HIV infection or with active hepatitis B virus (HBV) or active hepatitis C virus (HCV) infection.
• Any condition contraindicating leukapheresis
• Pregnant or breastfeeding
• Any other condition that would, in the investigator's or sponsor's judgment, contraindicate the patient's participation in the clinical trial because of safety concerns or compliance with clinical trial procedures (e.g., psychiatric disorders or substance dependence, neurological impairment)
• Patient has received systemic corticosteroids within 2 weeks prior to leukapheresis,
• Patient has received surgery or other anti-cancer therapies, any agent that is likely to suppress bone marrow function, or investigational medicinal products within 7 days prior to leukapheresis.
• Patients with any active infection or ongoing reactivation of infection
• Patients who underwent non-myeloablative lymphodepletion prior to cell therapy within the last 6 months
• Prior treatment with IMA203
• Patients with ascites, pleural or pericardial effusion which requires repeated (2 within 4 weeks) or continuous paracentesis, thoracentesis or pericardiocentesis within last 2 months
• Patients with LDH greater than 2.0-fold ULN
• Concurrent treatment in another clinical trial or a device study that could interfere with the IMA203 treatment or planned investigator's choice treatment
• Patients with active brain metastases or leptomeningeal metastases
• Patient has received any investigational therapies, inactivated vaccines, chronic use of systemic corticosteroids or IV antibiotics within 1 week prior to randomization, or live vaccines within 4 weeks prior to randomization
• Patient has received any anti-cancer therapy (prior anti-cancer treatment or bridging therapy) or radiotherapy within 1 week prior to start of trial treatment
• Other protocol defined inclusion/exclusion criteria could apply

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Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Experimental arm	IMA203	Non-myeloablative chemotherapy for lymphodepletion (LD) over 4 days using fludarabine (FLU) and cyclophosphamide (CY), one-time administration of IMA203, and adjunctive therapy with low dose interleukin (IL)-2 for up to 10 days, starting approximately 24 h after IMA203 infusion, optional bridging therapy
Control arm- investigator's choice	nivolumab plus relatlimab	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	lifileucel	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	nivolumab	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	pembrolizumab	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	ipilimumab	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	Dacarbazine	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	temozolomide	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	paclitaxel	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	paclitaxel plus carboplatin	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.
Control arm- investigator's choice	Albumin-Bound Paclitaxel	Investigator's choice of treatment approved by the respective Competent Authority (nivolumab plus relatlimab \[Opdualag®\], lifileucel, nivolumab, pembrolizumab, ipilimumab, or chemotherapy \[e.g., dacarbazine, temozolomide, paclitaxel, alb-bound paclitaxel, or paclitaxel plus carboplatin\]) as determined by the site investigator in accordance with current respective prescribing information (PI) and/or summary of product characteristics (SmPC), optional bridging therapy.

Primary Outcome Measures

Name	Time	Method
Progression-free survival assessed by BICR	up to 5 years post first treatment of last patient	progression-free survival (PFS), centrally assessed (by blinded independent central review) using RECIST 1.1

Secondary Outcome Measures

Name	Time	Method
Overall survival (OS)	up to 5 years post first treatment of last patient	conducted onsite or can be performed by phone
Objective response rate (ORR)	up to 5 years post first treatment of last patient	complete responses (CR) and partial response (PR) based on best overall response (BOR), locally and centrally (by blinded independent central review) assessed using RECIST 1.1
Progression-free survival	up to 5 years post first treatment of last patient	Progression-free survival locally assessed using RECIST 1.1
Treatment-emergent adverse events (TEAEs)	until 85 days after cell therapy treatment or 30 days after last treatment	To evaluate safety and tolerability of treatment with IMA203 compared with control (investigator's choice)
Adverse events of special interest (AESIs)	until 85 days after cell therapy treatment or 30 days after last treatment	To evaluate safety and tolerability of treatment with IMA203 compared with control (investigator's choice)
Treatment-emergent serious adverse events (TESAEs)	until 85 days after cell therapy treatment or 30 days after last treatment	To evaluate safety and tolerability of treatment with IMA203 compared with control (investigator's choice)
Frequency and duration of dose interruptions, reductions, and discontinuations	up to 5 years post first treatment of last patient	To evaluate safety and tolerability of treatment with IMA203 compared with control (investigator's choice)
EORTC QLQ-C30	up to 5 years post first treatment of last patient	To evaluate the patient-reported quality of life before and after treatment with IMA203 compared with control (investigator's choice)
EQ-5D-5L	up to 5 years post first treatment of last patient	To evaluate the patient-reported quality of life before and after treatment with IMA203 compared with control (investigator's choice)