PMID- 36736060 OWN - NLM STAT- MEDLINE DCOM- 20230516 LR - 20230517 IS - 2468-2942 (Electronic) IS - 2468-2942 (Linking) VI - 35 DP - 2023 TI - Real-world comparison of survival outcomes with cisplatin versus carboplatin in patients with limited-stage small-cell lung cancer. PG - 100686 LID - S2468-2942(23)00007-2 [pii] LID - 10.1016/j.ctarc.2023.100686 [doi] AB - INTRODUCTION: Limited-stage small-cell lung cancer (LS-SCLC) is potentially curable with concurrent chemoradiation (CRT). Cisplatin is the preferred platinum for the chemotherapy backbone in national guidelines. Unfortunately, many LS-SCLC patients are elderly, with comorbidities and poor performance status (PS), which preclude the use of cisplatin. Carboplatin may be a suitable alternative. This analysis evaluates the overall survival (OS) and time to next treatment (TTNT) in LS-SCLC patients receiving concurrent CRT by platinum use. MATERIALS AND METHODS: The study included LS-SCLC patients in the Flatiron Health nationwide de-identified electronic health record-derived database who received CRT in 2013-2019 with follow-up through May 2020. TTNT and OS were compared using both unadjusted and inverse propensity-weighted Cox proportional hazards models. RESULTS: This study included patients treated with carboplatin (n = 600) or cisplatin (n = 572) in combination with etoposide and radiation. Cisplatin patients were younger, had a shorter time from diagnosis to radiation, and had less kidney disease. In an unadjusted analysis, median overall survival (mOS) was greater in the cisplatin group than the carboplatin group with mOS of 22.3 months vs. 19.2 months and Hazard Ratio (HR) of 0.83 (p = 0.01). In the inverse propensity-weighted analysis, this difference was no longer significant (HR 0.93, p = 0.37). No differences were seen in TTNT. CONCLUSION: When balancing on key clinical factors, we observed no statistical difference in OS or TTNT by platinum choice in real-world LS-SCLC patients treated with CRT. Although observational, the results from this large data set are consistent with the hypothesis that either cisplatin or carboplatin is an appropriate therapy regardless of health status. CI - Copyright (c) 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved. FAU - Sama, Shashank AU - Sama S AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. FAU - Kerrigan, Kathleen AU - Kerrigan K AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. FAU - Sinnott, Jennifer A AU - Sinnott JA AD - Statistics Department, Ohio State University, Columbus, OH, USA. FAU - Puri, Sonam AU - Puri S AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. FAU - Akerley, Wallace AU - Akerley W AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. FAU - Haaland, Benjamin AU - Haaland B AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. FAU - Patel, Shiven AU - Patel S AD - Huntsman Cancer Institute at the University of Utah, 2000 Circle of Hope, Salt Lake City, UT 84112, USA. Electronic address: shiven.patel@hci.utah.edu. LA - eng GR - P30 CA042014/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20230121 PL - England TA - Cancer Treat Res Commun JT - Cancer treatment and research communications JID - 101694651 RN - BG3F62OND5 (Carboplatin) RN - Q20Q21Q62J (Cisplatin) RN - 49DFR088MY (Platinum) SB - IM MH - Aged MH - Humans MH - Antineoplastic Combined Chemotherapy Protocols/therapeutic use MH - Carboplatin/therapeutic use MH - Cisplatin/therapeutic use MH - *Lung Neoplasms MH - Platinum/therapeutic use MH - *Small Cell Lung Carcinoma/drug therapy MH - Treatment Outcome OTO - NOTNLM OT - Chemoradiation OT - Platinum therapy OT - Radiosensitizer OT - Real-world outcomes OT - Retrospective analysis COIS- Declaration of Competing Interest Dr. Haaland served as a consultant for Guidepoint Global, Value Analytics Labs, National Kidney Foundation, and Proxima Clinical Research. Dr. Puri reports receiving consulting/advisory fees from AstraZeneca, G1 therapeutics and Jazz Pharma and also reports travel funding from Dava Oncology. Dr. Patel reports receiving institutional funding from Takeda, Merck, AstraZeneca, Janssen; and consulting fees/advisory board fees from AstraZeneca, Natera, Boehringer Ingelheim, Blueprint Medicines, TerSera Therapeutics, Takeda, Regeneron, and Sanofi. Dr. Akerley reports participation on data safety/ advisory board for Lilly. Jennifer Sinnott reports an NIH funding grant. The remaining authors declare no conflict of interest. EDAT- 2023/02/04 06:00 MHDA- 2023/05/15 06:42 CRDT- 2023/02/03 18:06 PHST- 2022/11/11 00:00 [received] PHST- 2023/01/14 00:00 [revised] PHST- 2023/01/18 00:00 [accepted] PHST- 2023/05/15 06:42 [medline] PHST- 2023/02/04 06:00 [pubmed] PHST- 2023/02/03 18:06 [entrez] AID - S2468-2942(23)00007-2 [pii] AID - 10.1016/j.ctarc.2023.100686 [doi] PST - ppublish SO - Cancer Treat Res Commun. 2023;35:100686. doi: 10.1016/j.ctarc.2023.100686. Epub 2023 Jan 21.