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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Clin+Genitourin+Cancer
2014 ; 12
(5
): 335-40
Nephropedia Template TP
gab.com Text
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First-line Mammalian target of rapamycin inhibition in metastatic renal cell
carcinoma: an analysis of practice patterns from the International Metastatic
Renal Cell Carcinoma Database Consortium
#MMPMID24787966
Harshman LC
; Kroeger N
; Rha SY
; Donskov F
; Wood L
; Tantravahi SK
; Vaishampayan U
; Rini BI
; Knox J
; North S
; Ernst S
; Yuasa T
; Srinivas S
; Pal S
; Heng DY
; Choueiri TK
Clin Genitourin Cancer
2014[Oct]; 12
(5
): 335-40
PMID24787966
show ga
INTRODUCTION/BACKGROUND: Approval of the mTOR inhibitors for the treatment of
mRCC was based on efficacy in poor-risk patients in the first-line setting for
temsirolimus and in vascular endothelial growth factor inhibitor-refractory
patients for everolimus. We strove to characterize temsirolimus and everolimus
use and effectiveness in the first-line setting. PATIENTS AND METHODS: We
performed a retrospective database analysis of mRCC patients who received mTOR
inhibitors as first-line targeted therapy. The Kaplan-Meier product-limit method
was used to estimate the distribution of progression-free survival (PFS) and
overall survival (OS). RESULTS: We identified 127 mRCC patients who had received
a first-line mTOR inhibitor. Temsirolimus was administered in 93 patients (73%)
and everolimus in 34 patients (27%). The main reasons for choice of temsirolimus
were poor-risk disease (38%), non-clear cell histology (27%), and clinical trial
availability (15%), whereas clinical trial (82%) and non-clear cell histology
(6%) drove everolimus selection. Of the temsirolimus and everolimus patients, 58%
and 32% were poor-risk according to the International mRCC Database Consortium
criteria, respectively. The median PFS and OS were 3.4 and 12.5 months and 4.8
and 15.9 months with temsirolimus and everolimus, respectively. Although limited
by small numbers, this study characterizes a real-world, international experience
with the use of mTOR inhibition in treatment-naive mRCC patients. CONCLUSION:
Poor-risk RCC, non-clear cell histology, and clinical trials were the predominant
reasons for mTOR inhibitor selection in the front-line setting. Because of the
different patient populations in which they were administered, direct comparisons
of the front-line efficacy of temsirolimus and everolimus cannot be made.