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Study of Tarlatamab in Combination With YL201 With or Without Anti-programmed Death Ligand 1 (PD-L1) in Participants With Extensive Stage (ES) Small Cell Lung Cancer (SCLC)

A Phase 1b Study Evaluating the Safety, Tolerability, Pharmacokinetics, and Efficacy of Tarlatamab in Combination With YL201 With or Without Anti-PD-L1 in Subjects With Extensive Stage Small Cell Lung Cancer

Status
Recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06898957
Acronym
(DeLLphi-310)
Enrollment
200
Registered
2025-03-27
Start date
2025-05-16
Completion date
2031-04-23
Last updated
2026-02-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Small Cell Lung Cancer

Keywords

Small cell lung cancer, SCLC, Tarlatamab, YL201, Anti-PD-L1, Atezolizumab, Durvalumab

Brief summary

The primary objective of this study is to evaluate the safety and tolerability of tarlatamab in combination with YL201 with or without anti-PD-L1.

Interventions

DRUGYL201

YL201 will be administered as an IV infusion.

DRUGTarlatamab

Tarlatamab will be administered as an IV infusion.

DRUGAtezolizumab

Atezolizumab will be administered as an IV infusion.

DRUGDurvalumab

Durvalumab will be administered as an IV infusion.

Sponsors

Amgen
Lead SponsorINDUSTRY
MediLink
CollaboratorUNKNOWN

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to 99 Years
Healthy volunteers
No

Inclusion criteria

* Participants ≥ 18 years of age (or legal adult age within country) at time of signing informed consent. * Participants with histologically or cytologically confirmed ES-SCLC. * For Parts 1 and 2, participant must have ES-SCLC that has progressed or recurred following at least 1 line of platinum-based anti-cancer therapy. * For Part 3, participants must have ES-SCLC and no prior systemic treatment for ES SCLC other than 1 cycle of platinum-based chemotherapy, etoposide, and PD-(L)1 inhibitor in the first-line setting. * At least 1 measurable lesion as defined by RECIST 1.1. * Participants must have adequate organ function (cardiac, pulmonary, kidney, bone marrow, and liver).

Exclusion criteria

* Prior delta-like ligand 3 (DLL3) or B7 homolog 3 (B7-H3) targeted therapy. * Prior exposure to topoisomerase I inhibitors or antibody-drug conjugate (ADC) with topoisomerase I inhibitor payload. * Symptomatic central nervous system (CNS) metastases. Note: Participants with asymptomatic brain metastases are eligible as defined in the protocol. * History of (non-infectious) interstitial lung disease (ILD)/pneumonitis that required corticosteroids, current ILD/pneumonitis, or suspected ILD/pneumonitis that cannot be ruled out by imaging at screening. * Baseline requirement of supplemental oxygen.

Design outcomes

Primary

MeasureTime frame
Number of Participants Experiencing Dose-limiting toxicities (DLTs)Up to Day 21
Number of Participants Experiencing Treatment-emergent Adverse Events (TEAEs)Up to 3.5 Years

Secondary

MeasureTime frame
Objective Response Rate (ORR) per Response Evaluation Criteria in Solid Tumors (RECIST) 1.1Up to 3.5 Years
Duration of Response (DOR) per RECIST 1.1Up to 3.5 Years
Time to Response (TTR) per RECIST 1.1Up to 3.5 Years
Disease Control Rate (DCR) per RECIST 1.1Up to 3.5 Years
Progression-free Survival (PFS) per RECIST 1.1Up to 3.5 Years
Time to Progression (TTP) per RECIST 1.1Up to 3.5 Years
Time to Subsequent TherapyUp to 3.5 Years
Overall Survival (OS)Up to 3.5 Years
Maximum Serum Concentration (Cmax) of TarlatamabUp to Week 36
Minimum Serum Concentration (Cmin) of TarlatamabUp to Week 36
Area Under the Concentration-time Curve (AUC) Over the Dosing Interval for TarlatamabUp to Week 36
Half-life (t1/2) of TarlatamabUp to Week 36

Countries

Canada, China, France, Germany, Greece, Hungary, Italy, South Korea, Spain, United States

Contacts

CONTACTAmgen Call Center
medinfo@amgen.com866-572-6436
STUDY_DIRECTORMD

Amgen

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026