Observational studyJournal of translational medicine2026
Baseline PD-L1 expression on circulating immune cells as a predictor of survival and immune-related adverse events in extensive-stage small-cell lung cancer patients treated with durvalumab and carboplatin-etoposide (NCT04712903 Trial).
Observational study in Journal of translational medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04712903 (A Phase IIIB, Single Arm Study, of Durvalumab in Combination With Platinum-Etoposide for Untreated Patients With Extensive-Stage Small Cell Lung Cancer Reflecting Real World Clinical Practice in Spain), which is not on this map. Not yet cited in PubMed.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
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A Phase IIIB, Single Arm Study, of Durvalumab in Combination With Platinum-Etoposide for Untreated Patients With Extensive-Stage Small Cell Lung Cancer Reflecting Real World Clinical Practice in Spain (CANTABRICO).
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Authors and funding
20 authors.
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Abstract
introductionDespite improved efficacy with first-line immune checkpoint inhibitors plus platinum-based chemotherapy for extensive-stage small cell lung cancer (ES-SCLC), long-term survival remains limited. There is currently no available predictive biomarker to identify which patients would benefit most from this treatment. We hypothesized that pre-treatment PD-L1 expression on circulating immune cells might predict survival outcomes and toxicity. MATERIAL AND
methodsThis prospective, multi-center observational study included patients with untreated ES-SCLC treated with first-line durvalumab plus platinum-based chemotherapy. The percentages of circulating PD-L1+ immune cells at baseline were analysed by flow cytometry to assess their association with survival outcomes and the development of immune-related adverse events (irAEs).
resultsAmong 41 patients with ES-SCLC, 65.9% were male, 73.2% had an ECOG-PS 1, 9.8% had central nervous system (CNS) metastases and 31.7% had liver metastases. Sixteen patients (39%) experienced irAEs. Median PFS was longer in patients with high percentages of circulating PD-L1+ monocytes compared to those with low percentages: 8.97 months (95% CI NR to NR) vs. 5.97 months (95% CI 4.65 to 7.28), p = 0.007. There was a trend toward longer median OS in patients with ES-SCLC and high percentages of circulating PD-L1+ monocytes versus low percentages: NR (95% CI NR-NR) vs. 9.13 months (95% CI 6.34 to 11.92), p = 0.092. Patients with higher circulating PD-L1+ neutrophils correlated with the development of irAES (p = 0.007).
conclusionsOur results showed a statistically significant longer PFS in patients with ES-SCLC and high percentages of circulating PD-L1+ monocytes. This suggests PD-L1 expression on monocytes might be established as a predictive biomarker for patients with ES-SCLC treated with upfront chemo-immunotherapy.
trial registrationNCT04712903 Trial. Last registered 1 December 2025, https://www.clinicaltrials.gov/study/NCT04712903 .
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