Overview
This is a study to investigate the safety and efficacy of an investigational OBX-115 regimen in adult participants with advanced solid tumors.
Description
Primary Objective (Phase 1):
• Assess the safety and tolerability of OBX-115 regimen
Primary Objective (Phase 2):
• Evaluate preliminary efficacy of OBX-115 regimen as measured by the investigator using objective response rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1
Secondary (Phase 1):
• Assess preliminary efficacy of OBX-115 regimen by evaluating ORR
Secondary (Phase 2):
• Evaluate safety and tolerability of OBX 115 based on the collected AE data
Secondary (both Phase 1 and Phase 2):
- Evaluate duration of response (DOR): To evaluate the duration from the time that criteria are met for CR or PR per RECIST v1.1 as assessed by the investigator until disease progression or death due to cancer.
- Evaluate disease control rate (DCR): To evaluate the percentage of participants with a best overall confirmed response of CR or PR at any time plus stable disease (SD) for at least 4 weeks per RECIST v1.1 as assessed by the investigator.
- Evaluate progression-free survival (PFS): To evaluate the time from the date of OBX-115 infusion until disease progression per RECIST v1.1 as assessed by the investigator or death due to any cause.
- Evaluate overall survival (OS): To evaluate the time from the date of OBX-115 infusion to death due to any cause
- Evaluate feasibility of the manufacturing process: Evaluated as the proportion of OBX-115 products initiated for manufacturing that pass release criteria for infusion.
Eligibility
Inclusion Criteria:
- Participant must be 18 years of age or older at the time of signing the informed consent.
- Participant has a histologically confirmed diagnosis of advanced/metastatic melanoma ore relapsed refractory metastatic non-small cell lung cancer (NSCLC).
- Melanoma participant experienced documented radiographic disease progression after systemic therapy containing a programmed cell death protein 1 (PD-1)/programmed death ligand 1 (PD-L1) blocking antibody. Participants with melanoma must not exceed 2 prior lines of systemic therapy. Neoadjuvant/Adjuvant treatment will not be considered a prior line of systemic therapy unless the participant progressed during or within the 12 weeks after the last dose of the adjuvant PD-1/PD-L1 blocking antibody. Participants with non-small cell lung cancer should have relapsed or are refractory to approved systemic therapies (approved ICI-based regimen for all appropriate participants and/or an approved targeted therapy for known molecular abnormalities if applicable to their disease). Participant must not have been exposed to both taxane and gemcitabine.
- Participant is assessed as having at least one lesion (or aggregate lesions) suitable for OBX-115 generation.
- After tumor tissue procurement, the participant will have at least one remaining measurable lesion, as defined by RECIST v1.1.
- Participant has an Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1 and an estimated life expectancy of greater than 6 months.
- Participant has recovered from all prior anticancer treatment-related AEs to at least Grade 1 (per Common Terminology Criteria for Adverse Events [CTCAE]).
- Participants must have completed post-operative recovery from any prior surgical procedures with wound healing and resolution of all surgical complications prior to planned tumor procurement surgery.
- Both male and female (women of childbearing potential) participants agree to the follow protocol specified contraceptive and/or abstinence requirements.
- Participant has protocol specified hematologic parameters for absolute neutrophil count (ANC) and platelet count.
- Participant has adequate cardiac, liver, lung, and kidney organ function as specified in the protocol.
Exclusion Criteria:
- Participant has melanoma of uveal origin or its other genetic equivalents (e.g. GNA11 and GNAQ).
- Participant has a history of brain metastases or leptomeningeal disease. Participants may be considered for enrollment if they have 4 or fewer brain metastatic lesions that are up to 1.5cm in diameter that have been treated, if clinically indicated.
- Participant has an active medical illness(es) that, in the opinion of the Investigator, would pose increased risks for study participation.
- Participants with non-small cell lung cancer with refractory and clinically significant pleural effusions.
- Participant has any form of primary or acquired immunodeficiency.
- Participant has a history of hypersensitivity to any component of the study intervention.
- Participant had another primary malignancy within the previous 3 years (with protocol specified exceptions).
- Participant has a history of allogeneic organ transplant, allogeneic cell therapy, or genetically engineered cell therapy. Prior engineered TIL cell therapy is allowed.
- Participant requires systemic steroid therapy of greater than10 mg/day of prednisone or equivalent.
- Participant received a live or attenuated vaccination within 28 days prior to the start of lymphodepletion (LD).
- Participant has evidence of positive infectious disease screening and/or any active uncontrolled viral, bacterial, or fungal disease requiring ongoing systemic treatment or identified during screening.