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<p>Neoadjuvant immunotherapies have shown antitumor activity in melanoma. Substudy 02C of the global, rolling-arm, phase 1/2, adaptive-design KEYMAKER-U02 trial is evaluating neoadjuvant pembrolizumab (anti-PD-1) alone or in combination, followed by adjuvant pembrolizumab, for stage IIIB–D melanoma. Here we report results from the first three arms: pembrolizumab plus vibostolimab (anti-TIGIT), pembrolizumab plus gebasaxturev (coxsackievirus A21) and pembrolizumab monotherapy. Pathologic complete responses occurred in 10 of 26 patients (38%) with pembrolizumab plus vibostolimab, 7 of 25 (28%) with pembrolizumab plus gebasaxturev and 6 of 15 (40%) with pembrolizumab monotherapy. Major pathologic responses occurred in 13 (50%), 10 (40%) and 7 (47%) patients, respectively. Safety was manageable. Treatment-related adverse events occurred in 24 of 26 patients (92%) with pembrolizumab plus vibostolimab, 21 of 25 (84%) with pembrolizumab plus gebasaxturev and 12 of 15 (80%) with pembrolizumab monotherapy; grade 3 or 4 treatment-related adverse events occurred in 2 (8%), 7 (28%) and 1 (7%) patient in each arm, respectively. No deaths due to adverse events occurred. Exploratory objective responses per RECIST v1.1 were observed in 13 (50%), 8 (32%) and 4 (27%) patients, in each arm, respectively. In a post hoc analysis, scores for tumor mutational burden and an 18-gene T cell-inflamed gene expression profile were generally higher in patients with major pathologic response. Longer follow-up will provide insight into the incremental benefit of combining neoadjuvant pembrolizumab with other therapies in stage IIIB–D melanoma. ClinicalTrials.gov registration: <a href="https://clinicaltrials.gov/search?cond=NCT04303169">NCT04303169</a>.</p>

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Neoadjuvant anti-PD-1 alone or in combination with anti-TIGIT or an oncolytic virus in resectable stage IIIB–D melanoma: a phase 1/2 trial

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年1月7日

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  • Reinhard Dummer,
  • Caroline Robert,
  • Richard A. Scolyer,
  • Janis M. Taube,
  • Michael T. Tetzlaff,
  • Alexander M. Menzies,
  • Andrew Hill,
  • Jean-Jacques Grob,
  • David C. Portnoy,
  • Celeste Lebbe,
  • Muhammad A. Khattak,
  • Jonathan Cohen,
  • Gil Bar-Sela,
  • Inderjit Mehmi,
  • Ronnie Shapira-Frommer,
  • Nicolas Meyer,
  • Andrea L. Webber,
  • Yixin Ren,
  • Mizuho Fukunaga-Kalabis,
  • Clemens Krepler,
  • Georgina V. Long

摘要

Neoadjuvant immunotherapies have shown antitumor activity in melanoma. Substudy 02C of the global, rolling-arm, phase 1/2, adaptive-design KEYMAKER-U02 trial is evaluating neoadjuvant pembrolizumab (anti-PD-1) alone or in combination, followed by adjuvant pembrolizumab, for stage IIIB–D melanoma. Here we report results from the first three arms: pembrolizumab plus vibostolimab (anti-TIGIT), pembrolizumab plus gebasaxturev (coxsackievirus A21) and pembrolizumab monotherapy. Pathologic complete responses occurred in 10 of 26 patients (38%) with pembrolizumab plus vibostolimab, 7 of 25 (28%) with pembrolizumab plus gebasaxturev and 6 of 15 (40%) with pembrolizumab monotherapy. Major pathologic responses occurred in 13 (50%), 10 (40%) and 7 (47%) patients, respectively. Safety was manageable. Treatment-related adverse events occurred in 24 of 26 patients (92%) with pembrolizumab plus vibostolimab, 21 of 25 (84%) with pembrolizumab plus gebasaxturev and 12 of 15 (80%) with pembrolizumab monotherapy; grade 3 or 4 treatment-related adverse events occurred in 2 (8%), 7 (28%) and 1 (7%) patient in each arm, respectively. No deaths due to adverse events occurred. Exploratory objective responses per RECIST v1.1 were observed in 13 (50%), 8 (32%) and 4 (27%) patients, in each arm, respectively. In a post hoc analysis, scores for tumor mutational burden and an 18-gene T cell-inflamed gene expression profile were generally higher in patients with major pathologic response. Longer follow-up will provide insight into the incremental benefit of combining neoadjuvant pembrolizumab with other therapies in stage IIIB–D melanoma. ClinicalTrials.gov registration: NCT04303169.