A Phase 2 Study of Tarlatamab in Patients With Small Cell Lung Cancer (SCLC)

Summary

The main aim of this study is to: * evaluate safety and efficacy (per Response Evaluation Criteria in Solid Tumors version 1.1 \[RECIST 1.1\] by investigator) of 2 dose levels of tarlatamab for Part 1 only * evaluate anti-tumor activity of tarlatamab as determined by objective response rate (ORR) per RECIST 1.1 by blinded independent central review (BICR) for Part 1 and 2 * evaluate safety of reduced mandatory monitoring period in Cycle 1 at selected dose of tarlatamab for Part 3

Timeline

Start

2021-12-01

Primary completion

2026-12-30

Completion

2027-12-30

Publications

• Background Ahn MJ, Cho BC, Felip E, Korantzis I, Ohashi K, Majem M, Juan-Vidal O, Handzhiev S, Izumi H, Lee JS, Dziadziuszko R, Wolf J, Blackhall F, Reck M, Bustamante Alvarez J, Hummel HD, Dingemans AC, Sands J, Akamatsu H, Owonikoko TK, Ramalingam SS, Borghaei H, Johnson ML, Huang S, Mukherjee S, Minocha M, Jiang T, Martinez P, Anderson ES, Paz-Ares L; DeLLphi-301 Investigators. Tarlatamab for Patients with Previously Treated Small-Cell Lung Cancer. N Engl J Med. 2023 Nov 30;389(22):2063-2075. doi: 10.1056/NEJMoa2307980. Epub 2023 Oct 20.
• Background Ahn MJ, Cho BC, Felip E, Korantzis I, Ohashi K, Majem M, Juan-Vidal O, Handzhiev S, Izumi H, Lee JS, Dziadziuszko R, Wolf J, Blackhall F, Reck M, Alvarez JB, Hummel HD, Dingemans AC, Sands J, Akamatsu H, Owonikoko TK, Ramalingam SS, Borghaei H, Johnson ML, Huang S, Mukherjee S, Minocha M, Jiang T, Martinez P, Anderson ES, Paz-Ares L. Plain language summary: tarlatamab for patients with previously treated small cell lung cancer. Future Oncol. 2024 Dec;20(40):3355-3364. doi: 10.1080/14796694.2024.2402152. Epub 2024 Nov 12.
• Background Hummel HD, Ahn MJ, Blackhall F, Reck M, Akamatsu H, Ramalingam SS, Borghaei H, Johnson M, Dirnberger F, Cocks K, Huang S, Mukherjee S, Paz-Ares L. Patient-Reported Outcomes for Patients with Previously Treated Small Cell Lung Cancer Receiving Tarlatamab: Results from the DeLLphi-301 Phase 2 Trial. Adv Ther. 2025 Apr;42(4):1950-1964. doi: 10.1007/s12325-025-03136-4. Epub 2025 Mar 3.
• Background Kong S, Minocha M, Chen PW, Martinez P, Anderson ES, Parkes A, Houk BE, Lin CW. Population Pharmacokinetics of Tarlatamab, a Half-Life Extended DLL3-Directed Bispecific T-Cell Engager in Patients with Previously Treated Small Cell Lung Cancer. Clin Pharmacokinet. 2025 May;64(5):729-741. doi: 10.1007/s40262-025-01499-z. Epub 2025 Apr 22.
• Background Ahn MJ, Cho BC, Ohashi K, Izumi H, Lee JS, Han JY, Chiang CL, Huang S, Hamidi A, Mukherjee S, Xu KL, Akamatsu H. Asian Subgroup Analysis of Patients in the Phase 2 DeLLphi-301 Study of Tarlatamab for Previously Treated Small Cell Lung Cancer. Oncol Ther. 2025 Dec;13(4):1041-1054. doi: 10.1007/s40487-025-00372-0. Epub 2025 Sep 4.
• Background Chen PW, Minocha M, Kong S, Jiang T, Anderson ES, Parkes A, Martinez P, Houk BE, Lin CW. Tarlatamab Exposure-Efficacy and Exposure-Safety Relationships to Inform Dose Selection in Patients with Small Cell Lung Cancer. Clin Cancer Res. 2025 Nov 14;31(22):4688-4697. doi: 10.1158/1078-0432.CCR-25-2134.
• Background Dirnberger F, Wang J, King-Kallimanis B, Cocks K, Skingley G, Clarke N, Huang S, Mukherjee S, Koller M. Derivation of Meaningful Change Thresholds for European Organization for Research and Treatment of Cancer QLQ-C30 and QLQ-LC13 in Patients With Small-Cell Lung Cancer. Value Health. 2026 Feb;29(2):223-232. doi: 10.1016/j.jval.2025.09.011. Epub 2025 Sep 25.

Drugs

Indications