Phase I Clinical Study of Α-PD-L1/DLL3 CAR-T in Patients with R/R SCLC

Trial Title: Phase I Clinical Study of Α-PD-L1/DLL3 CAR-T in Patients with R/R SCLC

NCT ID: NCT06348797

Condition: Small Cell Lung Cancer Extensive Stage

Conditions: Official terms:
Lung Neoplasms
Small Cell Lung Carcinoma

Conditions: Keywords:
Extensive Stage-SCLC
DLL3 CAR-T
Bridge Radiotherapy

Study type: Interventional

Study phase: Phase 1

Overall status: Not yet recruiting

Study design:

Allocation: N/A

Intervention model: Single Group Assignment

Primary purpose: Treatment

Masking: None (Open Label)

Intervention:

Intervention type: Drug
Intervention name: α-PD-L1/4-1BB DLL3 CAR-T (BHP01)
Description: Preconditioning with fludarabine, cyclophosphamide, based chemotherapy regimen at sub-clinical doses; Bridge radiotherapy with 15 Gray (Gy)/5 fractions; α-PD-L1/4-1BB DLL3 CAR-T (BHP01): the first dose was 5x10^5/kg.
Arm group label: α-PD-L1/4-1BB DLL3 CAR-T (BHP01) Treatment

Other name: Bridge radiotherapy

Summary: A study to evaluate the safety and feasibility of α-PD-L1/4-1BB DLL3 Chimeric Antigen Receptor (CAR)-T (BHP01) in patients with Relapsed/Refractory Small Cell Lung Cancer (SCLC) and determine the appropriate CAR-T cell dose. Next, In dose expansion phase, patients were assign two groups with/without bridge radiotherapy.

Detailed description: Small cell lung cancer (SCLC) accounts for about 15% of lung cancers, and two-thirds of cases are metastatic at the time of diagnosis. The inhibitory notch ligand delta-like ligand 3 (DLL3) is aberrantly expressed on the surface of up to 85% of SCLC cells and minimally expressed in normal tissues, making it a compelling therapeutic target. This is a phase I, first-in-human, 3+3 dose escalation study to evaluate the safety and feasibility of BHP01 in patents with relapsed/refractory SCLC who progressed after at least 1 platinum based chemotherapy regimen.This is a dose escalation and dose expansion study. 12-21 patients with relapsed/refractory SCLC are planned to be enrolled (Group Pre-A/A/B/C). After the Dose-limiting toxicity (DLT) observation period of the related dose group finished.16 patients are planned to enroll in dose expansion phase who was assign two groups with/without bridge radiotherapy.

Criteria for eligibility:
Criteria:
Inclusion Criteria: - Patients with recurrent or refractory small cell lung cancer (SCLC) confirmed by histology or cytology who have relapsed or progressed after treatment with one previous platinum-based regimen; - Patients can provide sufficient tumor tissue (fresh or paraffin sections, etc.); - Age 18 ~70 (including boundary), for both men and women; - Eastern Cooperative Oncology Group (ECOG) performance status of 0-1; - Life expectancy ≥3 months; - At least one extracranial measurable lesion (RECIST v1.1) exists；for lesion after radiotherapy， must be confirmed that the lesion has progressed ; - Patients in limited-stage at the initial diagnosis must undergo radical thoracic radiotherapy and the time of tumor progression is not less than 3 months from the end of radiotherapy, or radical thoracic dose radiotherapy cannot be performed for specific reasons; - The test results of human immunodeficiency virus (HIV), hepatitis B surface antigen (HBsAg), hepatitis C and syphilis were negative at screening; - Female patients or male reproductive age patients and their partners should agree to effective contraception from sighing Informed Consent Form (ICF) to 6 months after the last BHP01 infusion. Exclusion Criteria: - Patients with known primary Central Nervous System (CNS) tumor, or meningeal metastasis, or patients with unstable CNS metastasis (symptomatic, requiring hormonal therapy within 4 weeks before investigational treatment, or no radiographic evidence of stabilization of the lesion for more than 4 weeks); - Received major surgical procedures （except for diagnosis） within 4 weeks before PBMCs collection, or are expected to require major surgical procedures during the study; - Received Chinese herbal medicine or Chinese patent medicine for anti-tumor indications within 7 days before Peripheral Blood Mononuclear Cells (PBMCs) collection; - Patients with a history of idiopathic pulmonary fibrosis, mechanical pneumonia (such as bronchiolitis obliterans), drug-induced pneumonia or idiopathic pneumonia, or evidence of active pneumonia by chest computer tomography (CT) at screening [a history of radiation pneumonia (fibrosis) in the irradiated field may participate in this study]; - Poorly controlled pleural effusion, pericardial effusion, or ascites requiring repeated drainage procedures (once a month or more frequently); - Poorly controlled or symptomatic hypercalcemia (ionic calcium> 1.5 mmol/L, calcium> 12 mg/dL or corrected calcium> ULN); - Presence of active or previous autoimmune diseases or immunodeficiencies, including but not limited to myasthenia gravis, myositis, autoimmune hepatitis, systemic lupus erythematosus, rheumatoid arthritis, etc.; - Severe infection within 4 weeks before the start of PBMCs collection, including but not limited to hospitalization due to infection, bacteremia, severe pneumonia, or any active infection that may affect the patient's safety; - Serious cardiovascular and cerebrovascular diseases (such as heart disease ≥New York Heart Association class II, myocardial infarction or cerebrovascular accident), unstable arrhythmia or unstable angina pectoris within 3 months before PBMCs collection; - Previous treatment with DLL 3 target drugs or CAR-T or other gene-modified T cells; - Received any other Investigational drug within 28 days prior to PBMCs collection; - A history of mental illness; - Incapacitated persons or persons with limited capacity; - pregnant or lactating females; Males or females who are unwilling to use adequate contraception; Females of childbearing potential are required to undergo a pregnancy study during the screening period;

Gender: All

Minimum age: 18 Years

Maximum age: 70 Years

Healthy volunteers: No

Start date: January 10, 2025

Completion date: December 31, 2026

Lead sponsor:
Agency: Sichuan University
Agency class: Other

Collaborator:
Agency: Chengdu Brilliant Pharmaceutical Co., Ltd.
Agency class: Industry

Source: Sichuan University

Record processing date: ClinicalTrials.gov processed this data on November 12, 2024

Source: ClinicalTrials.gov page: https://clinicaltrials.gov/ct2/show/NCT06348797