Overview
The primary objective of this trial is to evaluate the safety and tolerability of tarlatamab in combination with ZL-1310 with or without durvalumab and to determine the maximum tolerated combination dose (MTCD) and/or recommended phase 2 dose (RP2D) of ZL-1310 in combination with tarlatamab.
Eligibility
Inclusion Criteria:
- Age ≥ 18 years (or ≥ legal age within the country if it is older than 18 years) at the time of signing the informed consent.
- Participants with Histologically or cytologically confirmed SCLC:
- For Part 1, participants must have SCLC that has progressed or recurred following at least 1 line of platinum-based anti-cancer therapy.
- For Parts 1 and 2, participants must have progressed or recurred following at least 1 line of platinum-based therapy. No prior tarlatamab is allowed in Cohort 2-1.
- For Part 3, participants must have extensive-stage SCLC (ES-SCLC) with no prior systemic treatment other than 1 cycle of platinum-based chemotherapy.
Note: Participants with prior treatment for limited-stage SCLC (LS-SCLC) before diagnosis of ES SCLC are permitted.
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-1.
- At least 1 measurable lesion as defined per RECIST v1.1 within 21-day screening period, not previously irradiated.
- Adequate organ function (hematological, coagulation, renal, hepatic, pulmonary, and cardiac function).
Exclusion Criteria:
- Symptomatic CNS metastases. Participants with treated brain metastases are eligible provided they meet the criteria specified in the protocol.
- History of interstitial lung disease (ILD)/pneumonitis.
- Received thoracic radiation therapy within 90 days prior to first dose of trial intervention.
- Prior therapy with any delta-like ligand 3 (DLL3)-directed therapy.
- Prior exposure to topoisomerase I inhibitors or antibody-drug conjugate (ADC) with topoisomerase I inhibitor payload.
- Receiving strong CYP3A4 or CPY2D6 inhibitors within 14 days or 5 half-lives (whichever is longer) before the first dose of trial treatment.
- Enrollment in any tarlatamab clinical trial.
