Impact of the number of cycles of platinum based first line chemotherapy for advanced urothelial carcinoma Journal Article

Authors: Sonpavde, G. P.; Mariani, L.; Lo Vullo, S.; Raggi, D.; Giannatempo, P.; Bamias, A.; Crabb, S. J.; Bellmunt, J.; Yu, E. Y.; Niegisch, G.; Vaishampayan, U. N.; Theodore, C.; Berthold, D. R.; Srinivas, S.; Sridhar, S. S.; Plimack, E. R.; Rosenberg, J. E.; Powles, T.; Galsky, M. D.; Necchi, A.
Article Title: Impact of the number of cycles of platinum based first line chemotherapy for advanced urothelial carcinoma
Abstract: Purpose: We evaluated the impact of the number of cycles of platinum based, first line chemotherapy (fewer than 6 cycles vs the conventional 6 cycles or more) on the survival of patients with metastatic urothelial carcinoma. Materials and Methods: We used the RISC (Retrospective International Study of Invasive/Advanced Cancer of the Urothelium) database. The association of the number of cycles of chemotherapy with overall survival was investigated by Cox multiple regression analysis after controlling for recognized prognostic factors. We excluded patients who received fewer than 3 or more than 9 platinum chemotherapy cycles to reduce confounding factors. The primary analysis was a comparison of overall survival for 3 to 5 vs 6 to 9 cycles using 6-month landmark analysis when 281 death events were observed. Results: Of the 1,020 patients in the RISC 472 received cisplatin or carboplatin, of whom 338 and 134, respectively, were evaluable. A total of 157 patients received 3 to 5 cycles (median 4) and 315 received 6 to 9 cycles (median 6). There was no significant difference in overall survival between 3 to 5 and 6 to 9 cycles (HR 1.02, 95% CI 0.78–1.33, p = 0.91). No significant interactions were observed for the type of platinum (p = 0.09) and completed planned chemotherapy (p = 0.56). The limitations of a hypothesis generating, retrospective analysis applied. Conclusions: Four cycles of platinum based, first line chemotherapy appeared adequate and did not significantly compromise the survival of patients with advanced urothelial carcinoma. The omission of excessive cycles may avoid unnecessary cumulative toxicity and facilitate a better transition to second line therapy and investigational switch maintenance therapy strategies. These results require prospective validation but they may impact practice in select patients. © 2018 American Urological Association Education and Research, Inc.
Keywords: mortality; cisplatin; urothelium; carcinoma; urinary tract
Journal Title: Journal of Urology
Volume: 200
Issue: 6
ISSN: 0022-5347
Publisher: Elsevier Science, Inc.  
Date Published: 2018-12-01
Start Page: 1207
End Page: 1214
Language: English
DOI: 10.1016/j.juro.2018.07.035
PROVIDER: scopus
PUBMED: 30012366
Notes: Article -- Export Date: 3 December 2018 -- Source: Scopus
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  1. Jonathan Eric Rosenberg
    225 Rosenberg