| 論文種別 | 原著(症例報告除く) |
| 言語種別 | 英語 |
| 査読の有無 | その他(不明) |
| 表題 | Tarlatamab in small cell lung cancer following platinum-based chemotherapy: subgroup analysis of Japanese patients from the DeLLphi-304 study. |
| 掲載誌名 | 正式名：International journal of clinical oncology 略 称：Int J Clin Oncol ISSNコード：14377772/13419625 |
| 掲載区分 | 国外 |
| 巻・号・頁 | pp.Online ahead of print |
| 著者・共著者 | Takayasu Kurata, Shunichi Sugawara, Hiroaki Akamatsu, Kazushige Wakuda, Koichi Azuma, Takayuki Takahama, Hiroshi Kagamu, Hiroshi Yokouchi, Miyako Satouchi, Shuji Murakami, Kadoaki Ohashi, Makoto Nishio, Kazumi Nishino, Hiroki Izumi, Hiroshi Tanaka, Taichi Miyawaki, Shuang Huang, Upen Patil, Jihyun Park, Tatsuya Yoshida |
| 発行年月 | 2026/09 |
| 概要 | BACKGROUND:In the Phase 3 DeLLphi-304 trial, tarlatamab significantly improved overall survival (OS) over chemotherapy for small-cell lung cancer (SCLC) progressed after platinum-based chemotherapy. We report efficacy and safety in the Japanese subpopulation.METHODS:Patients were randomized to tarlatamab or amrubicin in Japan. The primary endpoint was OS. Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), duration of response (DOR), and safety.RESULTS:As of 29 Jan 2025 (data cutoff), 35 patients (tarlatamab, n = 12; amrubicin, n = 23) were enrolled. Baseline characteristics were generally balanced although fewer tarlatamab-treated patients had chemotherapy-free interval < 90 days or brain metastases. Median OS was NE (95% CI, 10.4, NE) for tarlatamab versus 11.5 (6.2, NE) months for amrubicin (HR [95% CI] = 0.533 [0.186, 1.529]). Twelve-month survival was 66.7% (33.7, 86.0) versus 47.0% (25.7, 65.6), respectively. Median PFS was 4.0 (1.3, 11.3) months versus 4.2 (2.1, 5.4) months (HR [95% CI] = 0.726 [0.339, 1.554]). ORR was 33.3% (9.9, 65.1) versus 26.1% (10.2, 48.4). Median DOR was 10.1 (3.0, NE) months versus 5.6 (2.8, NE) months. Grade ≥ 3 treatment-related adverse events were less frequent with tarlatamab (8.3%) versus amrubicin (56.5%). Cytokine release syndrome occurred in 75% of tarlatamab-treated patients (all were grade 1 or 2) and grade 2 immune effector cell-associated neurotoxicity syndrome was reported in 1 (8.3%) patient.CONCLUSION:Tarlatamab demonstrated numerically longer OS and DOR, and higher ORR versus amrubicin in Japanese patients with SCLC, with fewer high-grade treatment-related adverse events. These results in Japanese patients support those of the global population. |
| DOI | 10.1007/s10147-026-03192-y |
| PMID | 42762420 |