PMID- 21898376 OWN - NLM STAT- MEDLINE DCOM- 20120430 LR - 20181201 IS - 1097-0142 (Electronic) IS - 0008-543X (Linking) VI - 118 IP - 5 DP - 2012 Mar 1 TI - Phase II trial of continuous once-daily dosing of sunitinib as first-line treatment in patients with metastatic renal cell carcinoma. PG - 1252-9 LID - 10.1002/cncr.26440 [doi] AB - BACKGROUND: Sunitinib at 50 mg/day on the 4-weeks-on-2-weeks-off schedule is the current approved regimen for advanced/metastatic renal cell carcinoma (mRCC). Escudier et al reported that continuous, once-daily dosing with sunitinib 37.5 mg had a manageable safety profile and significant antitumor activity as second-line mRCC therapy. In this prospective, multicenter, phase II study, we evaluated the activity of continuous once-daily dosing with sunitinib 37.5 mg as first-line mRCC treatment. METHODS: One hundred nineteen treatment-naive patients with measurable mRCC received sunitinib. The primary endpoint was objective response; secondary endpoints included progression-free survival (PFS), safety, pharmacokinetic measurements, exploration of response biomarkers, and patient reported outcomes (PRO). RESULTS: Objective response rate (ORR) was 35.3%; median response duration was 10.4 months; 36% of patients had stable disease >/=12 weeks. Median PFS at 1 year was 9 months, and 1-year survival probability was 67.8%. The most common any-grade treatment-related adverse events (AEs) were diarrhea (50%) and hand-foot syndrome (43%); the most common grade 3-4 treatment-related AEs were hand-foot syndrome (13%), neutropenia (11%), and diarrhea (9%). Steady-state pharmacokinetics were reached within 3 weeks, with no disproportionate accumulation of sunitinib or its active metabolite throughout the study. No significant correlations between trough drug, active metabolite, or soluble protein levels and clinical response were observed. PRO was largely maintained, although fatigue appeared to worsen after treatment started, with improvement over time. CONCLUSIONS: Continuous once-daily dosing with sunitinib 37.5 mg was active with a manageable safety profile as first-line mRCC therapy, making this a feasible alternative dosing regimen. CI - Copyright (c) 2011 American Cancer Society. FAU - Barrios, Carlos H AU - Barrios CH AD - PUCRS School of Medicine, Porto Alegre, Brazil. chbe@via-rs.net FAU - Hernandez-Barajas, David AU - Hernandez-Barajas D FAU - Brown, Michael P AU - Brown MP FAU - Lee, Se-Hoon AU - Lee SH FAU - Fein, Luis AU - Fein L FAU - Liu, Jin-Hwang AU - Liu JH FAU - Hariharan, Subramanian AU - Hariharan S FAU - Martell, Bridget A AU - Martell BA FAU - Yuan, Jinyu AU - Yuan J FAU - Bello, Akintunde AU - Bello A FAU - Wang, Zhixiao AU - Wang Z FAU - Mundayat, Rajiv AU - Mundayat R FAU - Rha, Sun-Young AU - Rha SY LA - eng SI - ClinicalTrials.gov/NCT00338884 PT - Clinical Trial, Phase II PT - Journal Article PT - Multicenter Study PT - Research Support, Non-U.S. Gov't DEP - 20110906 PL - United States TA - Cancer JT - Cancer JID - 0374236 RN - 0 (Indoles) RN - 0 (Pyrroles) RN - V99T50803M (Sunitinib) SB - IM CIN - Cancer. 2012 Mar 1;118(5):1178-80. PMID: 21898373 MH - Adult MH - Aged MH - Carcinoma, Renal Cell/*drug therapy/epidemiology/mortality/pathology MH - Dose-Response Relationship, Drug MH - Drug Administration Schedule MH - Female MH - Humans MH - Indoles/*administration & dosage/adverse effects MH - Kidney Neoplasms/*drug therapy/epidemiology/mortality/pathology MH - Male MH - Middle Aged MH - Neoadjuvant Therapy MH - Neoplasm Metastasis MH - Pyrroles/*administration & dosage/adverse effects MH - Sunitinib MH - Survival Analysis MH - Young Adult EDAT- 2011/09/08 06:00 MHDA- 2012/05/01 06:00 CRDT- 2011/09/08 06:00 PHST- 2010/12/22 00:00 [received] PHST- 2011/03/30 00:00 [revised] PHST- 2011/04/04 00:00 [accepted] PHST- 2011/09/08 06:00 [entrez] PHST- 2011/09/08 06:00 [pubmed] PHST- 2012/05/01 06:00 [medline] AID - 10.1002/cncr.26440 [doi] PST - ppublish SO - Cancer. 2012 Mar 1;118(5):1252-9. doi: 10.1002/cncr.26440. Epub 2011 Sep 6.