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2017 ; 2
(8
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
First-in-human trial of multikinase VEGF inhibitor regorafenib and anti-EGFR
antibody cetuximab in advanced cancer patients
#MMPMID28422758
Subbiah V
; Khawaja MR
; Hong DS
; Amini B
; Yungfang J
; Liu H
; Johnson A
; Schrock AB
; Ali SM
; Sun JX
; Fabrizio D
; Piha-Paul S
; Fu S
; Tsimberidou AM
; Naing A
; Janku F
; Karp DD
; Overman M
; Eng C
; Kopetz S
; Meric-Bernstam F
; Falchook GS
JCI Insight
2017[Apr]; 2
(8
): ä PMID28422758
show ga
BACKGROUND: The combination of multikinase VEGF inhibitor regorafenib and
anti-EGFR antibody cetuximab overcomes intrinsic and acquired resistance in both
EGFR-sensitive and EGFR-resistant preclinical models of colorectal cancer (CRC).
METHODS: Utilizing a standard 3+3 design, a phase I study was designed to
determine safety, maximum tolerated dose (MTD), and dose-limiting toxicities
(DLTs) of the regorafenib plus cetuximab combination among patients with advanced
cancer including CRC. Comprehensive genomic profiling was performed on the
exceptional responder. RESULTS: Among the 27 patients enrolled the median age was
54 years. None of 19 patients treated at dose level 1 (cetuximab i.v. 200 mg/m2
followed by 150 mg/m2 weekly + regorafenib 80 mg daily) experienced a DLT, and 2
of 5 patients treated at dose level 2 (cetuximab i.v. 200 mg/m2 followed by 150
mg/m2 weekly + regorafenib 120 mg daily) experienced a DLT (grade 3
thrombocytopenia [n = 1] and grade 3 intra-abdominal bleed [n = 1]). Most common
adverse events were grade 1 or 2 rash (20 patients). Of 24 evaluable patients, 11
(46%) patients had clinical benefit (stable disease > 6 cycles or partial
response [PR]) (CRC n = 8, one patient each with head and neck cancer, carcinoma
of unknown primary, and glioblastoma). A CRC patient, who progressed on anti-EGFR
and regorafenib, achieved a PR (46% decrease per RECIST v1.1) lasting 15 months.
Genomic profiling of an exceptional responder with response for over 27 cycles
revealed hypermutated genotype with microsatellite instability (MSI). CONCLUSION:
Regorafenib 80 mg daily plus cetuximab 200 mg/m2 loading dose, followed by 150
mg/m2 every week is the MTD/recommended phase II dose. The combination
demonstrated early signals of activity in wild-type CRC, including 1 exceptional
responder with MSI high. TRIAL REGISTRATION: clinicaltrials.gov
NCT02095054FUNDING. The University of Texas MD Anderson Cancer Center is
supported by the NIH Cancer Center Support Grant CA016672. This work was
supported in part by the Cancer Prevention Research Institute of Texas grant
RP110584 and National Center for Advancing Translational Sciences grant UL1
TR000371 (Center for Clinical and Translational Sciences).