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Clin Cancer Res. 2021 Jun 15;27(12):3351-3359. doi: 10.1158/1078-0432.CCR-20-4443. Epub 2021 Jan 27.

Neoadjuvant Chemoradiotherapy Combined with Atezolizumab for Resectable Esophageal Adenocarcinoma: A Single-arm Phase II Feasibility Trial (PERFECT).

Clinical cancer research : an official journal of the American Association for Cancer Research

Tom van den Ende, Nicolien C de Clercq, Mark I van Berge Henegouwen, Suzanne S Gisbertz, E D Geijsen, R H A Verhoeven, Sybren L Meijer, Sandor Schokker, M P G Dings, Jacques J G H M Bergman, Nadia Haj Mohammad, Jelle P Ruurda, Richard van Hillegersberg, Stella Mook, Max Nieuwdorp, Tanja D de Gruijl, Tanya T D Soeratram, Bauke Ylstra, Nicole C T van Grieken, Maarten F Bijlsma, Maarten C C M Hulshof, H W M van Laarhoven

Affiliations

  1. Amsterdam UMC, Department of Medical Oncology, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands. [email protected] [email protected].
  2. Amsterdam UMC, Department of Internal and Vascular Medicine, University of Amsterdam, Amsterdam, the Netherlands.
  3. Amsterdam UMC, Department of Surgery, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  4. Amsterdam UMC, Department of Radiotherapy, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  5. Amsterdam UMC, Department of Medical Oncology, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  6. Department of Research and Development, Netherlands Comprehensive Cancer Organization (IKNL), Utrecht, the Netherlands.
  7. Amsterdam UMC, Department of Pathology, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  8. Amsterdam UMC, Laboratory for Experimental Oncology and Radiobiology, Center for Experimental and Molecular Medicine, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  9. Amsterdam UMC, Department of Gastroenterology, Cancer Center Amsterdam, University of Amsterdam, Amsterdam, the Netherlands.
  10. Department of Medical Oncology, UMC Utrecht, Utrecht University, Utrecht, the Netherlands.
  11. Department of Surgery, UMC Utrecht, Utrecht University, Utrecht, the Netherlands.
  12. Department of Radiotherapy, UMC Utrecht, Utrecht University, Utrecht, the Netherlands.
  13. Amsterdam UMC, Department of Medical Oncology, Cancer Center Amsterdam, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
  14. Amsterdam UMC, Department of Pathology, Cancer Center Amsterdam, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.

PMID: 33504550 DOI: 10.1158/1078-0432.CCR-20-4443

Abstract

PURPOSE: The CROSS trial established neoadjuvant chemoradiotherapy (nCRT) for patients with resectable esophageal adenocarcinoma (rEAC). In the PERFECT trial, we investigated the feasibility and efficacy of nCRT combined with programmed-death ligand-1 (PD-L1) inhibition for rEAC.

PATIENTS AND METHODS: Patients with rEAC received nCRT according to the CROSS regimen combined with five cycles of atezolizumab (1,200 mg). The primary endpoint was the feasibility of administering five cycles of atezolizumab in ≥75% patients. A propensity score-matched nCRT cohort was used to compare pathologic response, overall survival, and progression-free survival. Exploratory biomarker analysis was performed on repeated tumor biopsies.

RESULTS: We enrolled 40 patients of whom 85% received all cycles of atezolizumab. Immune-related adverse events of any grade were observed in 6 patients. In total, 83% proceeded to surgery. Reasons for not undergoing surgery were progression (

CONCLUSIONS: Combining nCRT with atezolizumab is feasible in patients with rEAC. On the basis of our exploratory biomarker study, future studies are necessary to elucidate the potential of neoadjuvant immunotherapy in patient subgroups.

©2021 American Association for Cancer Research.

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