Effect of reclassification of the IMDC model in patients with metastatic renal cell carcinoma treated with targeted therapy in the first-line and second-line settings

Nobuyuki Tanaka, Ryuichi Mizuno, Suguru Shirotake, Keiichi Ito, Yota Yasumizu, Ayako Masunaga, Yujiro Ito, Yasumasa Miyazaki, Masayuki Hagiwara, Kent Kanao, Shuji Mikami, Ken Nakagawa, Tetsuo Momma, Takeshi Masuda, Tomohiko Asano, Masafumi Oyama, Mototsugu Oya

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3 Citations (Scopus)

Abstract

Purpose: To investigate the prognostic effect of the International Metastatic Renal Cell Carcinoma Database Consortium (IMDC) model reclassification after targeted therapy administration in metastatic renal cell carcinoma (mRCC). Patients and method: A total of 245 mRCC patients treated with targeted therapy are included. The IMDC model reclassification is performed at 1 month after treatment induction of both first-line and second-line targeted therapy. Results: Of the 245 patients, 74 (30.2%) are divided into different risk groups by the IMDC model reclassification after first-line targeted therapy, and patients newly classified with intermediate risk tend to have better overall survival than those remaining in the primary poor-risk group (P = 0.018). Of the 119 patients treated with subsequent second-line targeted therapy, 25 (21.0%) are divided into different risk groups by the IMDC model reclassification after second-line targeted therapy, and patients newly classified with poor risk tend to have increased all-cause mortality compared with those remaining in the primary intermediate-risk group (P = 0.007), whereas patients newly classified with intermediate risk tend to have better overall survival than those remaining in the primary poor-risk group (P = 0.034). Conclusion: Approximately a quarter of the mRCC patients are classified into different risk groups of the IMDC model following targeted therapy administration in the first-line and second-line settings. There is a significant difference in overall survival of subgroups after the IMDC model reclassifications.

Original languageEnglish
JournalUrologic Oncology: Seminars and Original Investigations
DOIs
Publication statusAccepted/In press - 2015 Oct 22

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Keywords

  • IMDC
  • Metastasis
  • Outcome
  • Prognosis
  • Reclassification
  • Renal cell carcinoma
  • Targeted therapy

ASJC Scopus subject areas

  • Oncology
  • Urology

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