Trial reportJournal of clinical oncology : official journal of the American Society of Clinical Oncology2021
Updated Overall Survival and PD-L1 Subgroup Analysis of Patients With Extensive-Stage Small-Cell Lung Cancer Treated With Atezolizumab, Carboplatin, and Etoposide (IMpower133).
Trial report in Journal of clinical oncology : official journal of the American Society of Clinical Oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 573 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
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
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase I/III, Randomized, Double-Blind, Placebo-Controlled Study of Carboplatin Plus Etoposide With or Without Atezolizumab (Anti-PD-L1 Antibody) in Patients With Untreated Extensive-Stage Small Cell Lung Cancer
FASTing-like Approach to Improve the Efficacy of Maintenance IMMunotherapy in Extensive-stage Small Cell Lung Cancer Patients Not Progressing on Chemoimmunotherapy Induction: the FASTIMMUNE Trial
Continued PD-L1 Inhibition With Atezolizumab With Rechallenge Chemotherapy in Patients With Sensitive Relapse SCLC Progressing on First-line Platinum-etoposide Chemotherapy and a PD-L1 Inhibitor: CARRY-ON Study-GOIRC-01-2023
Who cites it
573 citing papers in PubMed, 4 syntheses or guidelines pooled it, 778 citations in OpenAlex.
- Pooled it
- Pooled it
- The benefit and risk of adding immunotherapy to chemoradiotherapy as the first-line treatment for limited-stage small cell lung cancer: a meta-analysis of randomized controlled trials.World journal of surgical oncology · 2025Pooled it
- Efficacy and safety of anlotinib combined with immune checkpoint inhibitors in the treatment of extensive-stage small cell lung cancer: a meta-analysis based on real-world data.BMC pulmonary medicine · 2025Pooled it
- Atezolizumab in Combination With Gemcitabine and Cisplatin as First-Line Treatment in Metastatic Urothelial Cancer: A Randomized Phase II Study of Two Alternative Dosing Schedules.Clinical genitourinary cancer · 2026Trial
- Personalized tumor-loaded monocyte-derived dendritic cell vaccination in combination with atezolizumab as maintenance treatment in extensive-stage small cell lung cancer (ES-SCLC): phase Ib-II VENEZOLUNG trial.Journal for immunotherapy of cancer · 2026Trial
- Sintilimab plus concurrent chemoradiotherapy for treatment of locally advanced small cell lung cancer (SINCE-01): a phase II clinical trial.Signal transduction and targeted therapy · 2026Trial
- Durvalumab plus anlotinib versus durvalumab alone as maintenance treatment in extensive-stage small-cell lung cancer (DURABLE): a multicenter, randomized, phase II trial and biomarker analysis.Nature communications · 2026Trial
- First-line serplulimab plus chemotherapy in extensive-stage small-cell lung cancer: Updated results and biomarker analysis from the ASTRUM-005 randomized clinical trial.Cancer communications (London, England) · 2025Trial
- Trial
- Harnessing local and system immune profiling delineating differential responders to first-line sintilimab (anti-PD-1 antibody) combined with chemotherapy in extensive-stage small cell lung cancer: an exploratory biomarker analysis of a phase II study.Signal transduction and targeted therapy · 2025Trial
- Carboplatin, etoposide, atezolizumab, and bevacizumab in the first-line treatment of patients with extensive stage small-cell lung cancer: the GOIRC-01-2019 CeLEBrATE study.Journal for immunotherapy of cancer · 2025Trial
- Induction chemotherapy followed by camrelizumab plus apatinib and chemotherapy as first-line treatment for extensive-stage small-cell lung cancer: a multicenter, single-arm trial.Signal transduction and targeted therapy · 2025Trial
- Application and mechanistic research of novel therapeutic strategies in cisplatin-resistant small cell lung cancer.Annals of medicine · 2026Review
- Biomimetic nano-in-gel vaccine platform with spatiotemporal co-delivery capacity for DC maturation against immunosuppressive tumors.International journal of pharmaceutics: X · 2026Article
- Serum albumin is associated with immune-related hypothyroidism and treatment continuity in non-small cell lung cancer.International journal of clinical oncology · 2026Article
- Artificial intelligence and radiomics in small cell lung cancer: a narrative review of imaging and multisource data integration.Journal of thoracic disease · 2026Review
- AdvanTIG-105: a phase I/Ib dose-expansion study of ociperlimab plus tislelizumab with or without chemotherapy in metastatic non-small cell lung cancer and extensive-stage small cell lung cancer.Journal for immunotherapy of cancer · 2026Article
- What are the Unmet Needs in Managing Digestive Neuroendocrine Carcinomas?Current oncology reports · 2026Review
- Article
513 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
20 authors at 9 institutions in 13 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeIMpower133 (ClinicalTrials.gov identifier: NCT02763579), a randomized, double-blind, phase I/III study, demonstrated that adding atezolizumab (anti-programmed death-ligand 1 [PD-L1]) to carboplatin plus etoposide (CP/ET) for first-line (1L) treatment of extensive-stage small-cell lung cancer (ES-SCLC) resulted in significant improvement in overall survival (OS) and progression-free survival (PFS) versus placebo plus CP/ET. Updated OS, disease progression patterns, safety, and exploratory biomarkers (PD-L1, blood-based tumor mutational burden [bTMB]) are reported. PATIENTS AND
methodsPatients with untreated ES-SCLC were randomly assigned 1:1 to receive four 21-day cycles of CP (area under the curve 5 mg per mL/min intravenously [IV], day 1) plus ET (100 mg/m
resultsPatients received atezolizumab plus CP/ET (n = 201) or placebo plus CP/ET (n = 202). At the updated analysis, median follow-up for OS was 22.9 months; 302 deaths had occurred. Median OS was 12.3 and 10.3 months with atezolizumab plus CP/ET and placebo plus CP/ET, respectively (hazard ratio, 0.76; 95% CI, 0.60 to 0.95; descriptive
conclusionAdding atezolizumab to CP/ET as 1L treatment for ES-SCLC continued to demonstrate improved OS and a tolerable safety profile at the updated analysis, confirming the regimen as a new standard of care. Exploratory analyses demonstrated treatment benefit independent of biomarker status.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.