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ESMO Open ; 9(6): 103464, 2024 Jun.
Article in English | MEDLINE | ID: mdl-38833971

ABSTRACT

BACKGROUND: Based on the findings of the PACIFIC trial, consolidation durvalumab following platinum-based chemoradiotherapy (CRT) is a global standard of care for patients with unresectable, stage III non-small-cell lung cancer (NSCLC). An earlier analysis from the ongoing PACIFIC-R study (NCT03798535) demonstrated the effectiveness of this regimen in terms of progression-free survival (PFS). Here, we report the first planned overall survival (OS) analysis. PATIENTS AND METHODS: PACIFIC-R is an observational/non-interventional, retrospective study of patients with unresectable, stage III NSCLC who started durvalumab (10 mg/kg intravenously every 2 weeks) within an AstraZeneca-initiated early access program between September 2017 and December 2018. Primary endpoints are OS and investigator-assessed PFS, estimated using the Kaplan-Meier method. RESULTS: By 30 November 2021, the full analysis set included 1154 participants from 10 countries (median follow-up in censored patients: 38.7 months). Median OS was not reached, and the 3-year OS rate was 63.2% (95% confidence interval 60.3% to 65.9%). Three-year OS rates were numerically higher among patients with programmed death-ligand 1 (PD-L1) expression on ≥1% versus <1% of tumor cells (TCs; 67.0% versus 54.4%) and patients who received concurrent CRT (cCRT) versus sequential CRT (sCRT) (64.8% versus 57.9%). CONCLUSIONS: PACIFIC-R data continue to provide evidence for the effectiveness of consolidation durvalumab after CRT in a large, diverse, real-world population. Better outcomes were observed among patients with PD-L1 TCs ≥1% and patients who received cCRT. Nevertheless, encouraging outcomes were still observed among patients with TCs <1% and patients who received sCRT, supporting use of consolidation durvalumab in a broad population of patients with unresectable, stage III NSCLC.


Subject(s)
Antibodies, Monoclonal , Antineoplastic Agents, Immunological , Carcinoma, Non-Small-Cell Lung , Chemoradiotherapy , Lung Neoplasms , Humans , Carcinoma, Non-Small-Cell Lung/mortality , Carcinoma, Non-Small-Cell Lung/pathology , Carcinoma, Non-Small-Cell Lung/therapy , Carcinoma, Non-Small-Cell Lung/drug therapy , Female , Male , Lung Neoplasms/mortality , Lung Neoplasms/therapy , Lung Neoplasms/pathology , Lung Neoplasms/drug therapy , Middle Aged , Retrospective Studies , Aged , Chemoradiotherapy/methods , Antibodies, Monoclonal/therapeutic use , Antineoplastic Agents, Immunological/therapeutic use , Antineoplastic Agents, Immunological/pharmacology , Adult , Neoplasm Staging , Aged, 80 and over
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