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2012 ; 120
(3
): 552-9
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gab.com Text
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English Wikipedia
A phase 1, multicenter, open-label, dose escalation study of elotuzumab in
patients with advanced multiple myeloma
#MMPMID22184404
Zonder JA
; Mohrbacher AF
; Singhal S
; van Rhee F
; Bensinger WI
; Ding H
; Fry J
; Afar DE
; Singhal AK
Blood
2012[Jul]; 120
(3
): 552-9
PMID22184404
show ga
This multicenter, first-in-human study evaluated the safety, tolerability, and
pharmacokinetic and pharmacodynamic properties of the anti-CS1 monoclonal
antibody elotuzumab. A standard 3 + 3 design was used to determine maximum
tolerated dose; dose-limiting toxicities were assessed during cycle 1.
Thirty-five patients with relapsed/refractory multiple myeloma were treated with
intravenous elotuzumab at doses ranging from 0.5 to 20 mg/kg every 2 weeks.
Patients who achieved at least stable disease after 4 treatments could receive
another 4 treatments. No maximum tolerated dose was identified up to the maximum
planned dose of 20 mg/kg. The most common adverse events, regardless of
attribution, were cough, headache, back pain, fever, and chills. Adverse events
were generally mild to moderate in severity, and adverse events attributed to
study medication were primarily infusion-related. Plasma elotuzumab levels and
terminal half-life increased with dose whereas clearance decreased, suggesting
target-mediated clearance. CS1 on bone marrow-derived plasma cells was reliably
saturated (? 95%) at the 10-mg/kg and 20-mg/kg dose levels. Using the European
Group for Bone and Marrow Transplantation myeloma response criteria, 9 patients
(26.5%) had stable disease. In summary, elotuzumab was generally well tolerated
in this population, justifying further exploration of this agent in combination
regimens.