SWOG S1400A (NCT02154490): A Phase II Study of Durvalumab for Patients With Previously Treated Stage IV or Recurrent Squamous Cell Lung Cancer (Lung-MAP Sub-study)

Hossein Borghaei, Mary W. Redman, Karen Kelly, Saima N. Waqar, Francisco Robert, Gauri J. Kiefer, Philip J. Stella, Katherine Minichiello, David R. Gandara, Roy S. Herbst, Vassiliki A. Papadimitrakopoulou

Research output: Contribution to journalArticlepeer-review

Abstract

Introduction: The objective of the Lung-MAP sub-study S1400A was to evaluate the response rate to durvalumab, an anti-programmed death-ligand 1 (PD-L1) antibody, in patients with squamous non–small-cell lung cancer (SqNSCLC). Patients and Methods: Patients who progressed on at least 1 prior platinum-based chemotherapy were eligible. The study was designed as a phase II/III trial comparing durvalumab with docetaxel but was modified to a single-arm, phase II trial with the primary endpoint of objective response when immunotherapy became an approved treatment. Results: A total of 116 patients were registered to this sub-study; 78 to durvalumab and 38 to docetaxel. Of the 78 patients, 9 were ineligible, and 1 was not evaluable for endpoints. Responses were achieved in 11 patients among the 68 eligible and evaluable patients on durvalumab (overall response rate, 16%; 95% confidence interval [CI], 7%-25%). The disease control rate was 54% (95% CI, 43%-66%), the median overall survival was 11.6 months (95% CI, 10.2-14.3 months), and the median progression-free survival was 2.9 months (95% CI, 2.0-4.0 months). PD-L1 data was available for 43 patients on durvalumab, with 14 (33%) patients who were PD-L1–positive (≥ 25%) and 2 responses (overall response rate, 14%; 95% CI, 0%-33%), the disease control rate was 57% (95% CI, 31%-83%), the median overall survival and progression-free survival were 10.7 months (95% CI, 9.2-14.3 months) and 2.3 months (95% CI, 1.4-4.2 months), respectively. Grade ≥ 3 treatment-related adverse events occurred in 22 (32%) patients on durvalumab, with 6 discontinuing owing to drug-related adverse events (9%; 95% CI, 2%-16%). Conclusions: Durvalumab shows single-agent activity and toxicities in this sub-group of patients that is comparable with other anti-programmed cell death protein 1/PD-L1 antibodies.

Original languageEnglish
Pages (from-to)178-186
Number of pages9
JournalClinical Lung Cancer
Volume22
Issue number3
DOIs
StatePublished - May 2021

Keywords

  • Biomarkers
  • Clinical trials
  • Immunotherapy
  • Non–small-cell lung cancer

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