“We are pleased to collaborate with
Five Prime and
Five Prime and
Financial terms of the agreement were not disclosed.
Bemarituzumab is a first-in-class, isoform-selective, humanized monoclonal antibody in clinical development as a targeted immunotherapy for tumors that overexpress FGFR2b, a splice variant of a receptor for some members of the fibroblast growth factor (FGF) family, or amplify the FGFR2 gene. Bemarituzumab has been engineered for enhanced antibody-dependent cell-mediated cytotoxicity (ADCC) to increase direct tumor cell killing by recruiting natural killer (NK) cells. Clinical results to date suggest that the specificity of bemarituzumab avoids the dose-limiting toxicities that have been seen with less selective pan-FGFR tyrosine kinase inhibitors that act on multiple FGFRs, including FGFR2.
Bemarituzumab is being evaluated in the FGF2b
Inhibition in Gastric
and Gastroesophageal Junction Cancer Treatment
(FIGHT) Phase 1/3 clinical trial, a global registrational study in
patients with advanced gastric or gastroesophageal junction cancer whose
tumors overexpress FGFR2b or have FGFR2 gene amplification. The
Phase 3 portion of the trial is expected to begin in the second half of
FPA150 is a first-in-class, fully human, afucosylated monoclonal antibody targeting B7-H4. B7-H4 expression is observed in multiple solid tumors, including breast, bladder and gynecologic cancers, and has been documented to correlate with poor prognosis. FPA150 is designed with a dual mechanism of action: blocking the T cell checkpoint activity of B7-H4 as well as delivering potent ADCC against tumor cells expressing B7-H4. B7-H4 is being studied in a Phase 1 trial of monotherapy FPA150 with a dose-escalation phase in patients with solid tumors, followed by dose expansion in pre-specified cohorts in tumor types based on B7-H4 expression levels. The initial targeted tumors are advanced or metastatic breast, ovarian, endometrial and bladder cancers.
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such as "may," "will," "expect," "plan," "anticipate," "estimate,"
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progress and scope of clinical trials for Five Prime’s product
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overexpression in certain patient populations. Many factors may cause
differences between current expectations and actual results including
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statements in this press release are discussed in Five Prime's filings
Five Prime Therapeutics, Inc.
Heather Rowe, 415-365-5737
Senior Director, Investor Relations and Corporate Communications