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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+Cancer+Res
2014 ; 20
(23
): 5927-36
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English Wikipedia
Phase II clinical trial of amatuximab, a chimeric antimesothelin antibody with
pemetrexed and cisplatin in advanced unresectable pleural mesothelioma
#MMPMID25231400
Hassan R
; Kindler HL
; Jahan T
; Bazhenova L
; Reck M
; Thomas A
; Pastan I
; Parno J
; O'Shannessy DJ
; Fatato P
; Maltzman JD
; Wallin BA
Clin Cancer Res
2014[Dec]; 20
(23
): 5927-36
PMID25231400
show ga
PURPOSE: Amatuximab is a chimeric monoclonal antibody to mesothelin, a cell
surface glycoprotein highly expressed in malignant pleural mesothelioma (MPM). On
the basis of its synergy with chemotherapy in preclinical studies, we evaluated
the antitumor activity of amatuximab plus pemetrexed and cisplatin in patients
with unresectable MPM. EXPERIMENTAL DESIGN: In a single-arm phase II study,
amatuximab (5 mg/kg) was administered on days 1 and 8 with pemetrexed (500
mg/m(2)) and cisplatin (75 mg/m(2)) on day 1 of 21-day cycles for up to six
cycles. Patients with response or stable disease received amatuximab maintenance
until disease progression. Primary endpoint was progression-free survival (PFS)
at 6 months. Secondary endpoints were overall survival (OS), response rate, and
safety. RESULTS: Eighty-nine patients were enrolled at 26 centers. Median of five
cycles (range, 1-6) of combination treatment was administered, and 56 (63%)
patients received amatuximab maintenance. Combination therapy resulted in no
overlapping toxicities. Eleven patients (12.4%) had amatuximab-related
hypersensitivity reactions. Responses included partial responses in 33 (40%) and
stable disease in 42 (51%). Six-month PFS rate was 51% [95% confidence interval
(CI), 39.1-62.3)], median PFS was 6.1 months (95% CI, 5.8-6.4), and median OS was
14.8 months (95% CI, 12.4-18.5) with 29 patients alive at data cut-off.
CONCLUSIONS: Amatuximab with pemetrexed and cisplatin was well tolerated with
objective tumor response or stable disease rate of 90% by independent radiologic
review. Although PFS was not significantly different from historical controls,
the median OS was 14.8 months with a third of patients alive and 5 continuing to
receive amatuximab at the time of analysis.