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Efficacy of Capecitabine and Temozolomide Regimen in Neuroendocrine Tumors: Data From the Turkish Oncology Group.

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Title: Efficacy of Capecitabine and Temozolomide Regimen in Neuroendocrine Tumors: Data From the Turkish Oncology Group.
Authors: Ünal, Çağlar, Azizy, Abdulmunir, Karabulut, Senem, Taştekin, Didem, Akyıldız, Arif, Yaşar, Serkan, Yalçın, Şuayib, Çoban, Eyüp, Evrensel, Türkkan, Kalkan, Ziya, Oruç, Zeynep, Derin, Sümeyra, Turna, Zeynep Hande, Bayram, Doğan, Köş, Fahriye Tuğba, Şendur, Mehmet Ali Nihat, Sever, Nadiye, Ercelep, Özlem, Seyyar, Mustafa, Kefeli, Umut
Source: Oncologist; Oct2023, Vol. 28 Issue 10, p875-884, 10p, 5 Charts, 3 Graphs
Subject Terms: THERAPEUTIC use of antimetabolites, ANTINEOPLASTIC agents, DRUG efficacy, RESEARCH, METASTASIS, RETROSPECTIVE studies, COMPARATIVE studies, NEUROENDOCRINE tumors, TEMOZOLOMIDE, DESCRIPTIVE statistics, SURVIVAL analysis (Biometry), DATA analysis software, PATIENT safety, EVALUATION
Geographic Terms: TURKEY
Abstract: Introduction This study aims to report the efficacy and safety of capecitabine plus temozolomide (CAPTEM) across different lines of treatment in patients with metastatic neuroendocrine tumors (NETs). Methods We conducted a multicenter retrospective study analyzing the data of 308 patients with metastatic NETs treated with CAPTEM between 2010 and 2022 in 34 different hospitals across various regions of Turkey. Results The median follow-up time was 41.0 months (range: 1.7-212.1), and the median age was 53 years (range: 22-79). Our results across the entire patient cohort showed a median progression-free survival (PFS) of 10.6 months and a median overall survival (OS) of 60.4 months. First-line CAPTEM treatment appeared more effective, with a median PFS of 16.1 months and a median OS of 105.8 months (median PFS 16.1, 7.9, and 9.6 months in first-, second- and ≥third-line respectively, P  = .01; with median OS values of 105.8, 47.2, and 24.1 months, respectively, P  = .003) In terms of ORR, the first-line treatment again performed better, resulting in an ORR of 54.7% compared to 33.3% and 30.0% in the second and third or higher lines, respectively (P  < .001). Grade 3-4 side effects occurred only in 22.5% of the patients, leading to a discontinuation rate of 9.5%. Despite the differences in outcomes based on treatment line, we did not observe a significant difference in terms of side effects between the first and subsequent lines of treatment. Conclusions and Relevance The substantial superior outcomes in patients receiving first-line CAPTEM treatment highlight its potential as an effective treatment strategy for patients with metastatic NET. [ABSTRACT FROM AUTHOR]
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Database: Complementary Index
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Abstract:Introduction This study aims to report the efficacy and safety of capecitabine plus temozolomide (CAPTEM) across different lines of treatment in patients with metastatic neuroendocrine tumors (NETs). Methods We conducted a multicenter retrospective study analyzing the data of 308 patients with metastatic NETs treated with CAPTEM between 2010 and 2022 in 34 different hospitals across various regions of Turkey. Results The median follow-up time was 41.0 months (range: 1.7-212.1), and the median age was 53 years (range: 22-79). Our results across the entire patient cohort showed a median progression-free survival (PFS) of 10.6 months and a median overall survival (OS) of 60.4 months. First-line CAPTEM treatment appeared more effective, with a median PFS of 16.1 months and a median OS of 105.8 months (median PFS 16.1, 7.9, and 9.6 months in first-, second- and ≥third-line respectively, P  = .01; with median OS values of 105.8, 47.2, and 24.1 months, respectively, P  = .003) In terms of ORR, the first-line treatment again performed better, resulting in an ORR of 54.7% compared to 33.3% and 30.0% in the second and third or higher lines, respectively (P  < .001). Grade 3-4 side effects occurred only in 22.5% of the patients, leading to a discontinuation rate of 9.5%. Despite the differences in outcomes based on treatment line, we did not observe a significant difference in terms of side effects between the first and subsequent lines of treatment. Conclusions and Relevance The substantial superior outcomes in patients receiving first-line CAPTEM treatment highlight its potential as an effective treatment strategy for patients with metastatic NET. [ABSTRACT FROM AUTHOR]
ISSN:10837159
DOI:10.1093/oncolo/oyad257