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- Outcomes From Clinical Study in Prostate Cancer Presented at Genitourinary Cancers Symposium -
Fifty-two patients with metastatic castration-resistant prostate cancer (mCRPC) were dosed at nine dose levels. Significant antitumor activity was observed across doses ranging from 1.8 mg/kg to 2.8 mg/kg. Dose limiting toxicities, primarily neutropenia, were seen at 2.8 mg/kg. The most commonly reported adverse events were anorexia and fatigue.
A poster entitled "Prostate-Specific Membrane Antigen Antibody Drug Conjugate (PSMA ADC): A Phase 1 Trial in Subjects with Metastatic Castration-Resistant Prostate Cancer (mCRPC) Previously Treated with Taxane" is being presented today by
Progenics opened enrollment in a subsequent phase 2 study of PSMA ADC in
Phase 1 study design
The phase 1, open-label, dose-escalation clinical trial was conducted in men with hormone-refractory prostate cancer that had progressed despite prior treatment with taxane-based chemotherapy regimens. In addition to assessing PSMA ADC's safety and tolerability, the study included evaluations of pharmacodynamics, changes in tumor burden, and changes in PSA and CTC values compared to baseline. PSA is a secreted protein that is distinct from PSMA.
The initial 12-week clinical trial period evaluated up to four intravenous doses of PSMA ADC administered at three-week intervals. Following completion of the four doses, patients were offered, at their physicians' discretion, the option to continue treatment with PSMA ADC for up to an additional 39 weeks.
About PSMA ADC
PSMA, a protein that is a validated biomarker of prostate cancer, is expressed on the surface of prostate cancer cells as well as on blood vessels supplying other solid tumors. PSMA ADC comprises a fully human monoclonal antibody selectively targeting PSMA linked to a chemotherapeutic drug. Using technology licensed from Seattle Genetics, Inc., the PSMA antibody is linked to monomethyl auristatin E, a compound that inhibits cell proliferation by disrupting the cellular "backbone" (i.e., microtubules) required for replication. The resultant antibody-drug conjugate attaches to the PSMA protein on the surface of prostate cancer cells and is designed to internalize into the cancer cell, release active anti-cancer drug, and destroy the malignant cell.
Unlike traditional chemotherapy, PSMA ADC is designed to deliver the drug selectively to prostate cancer cells by targeting PSMA. In pre-clinical studies, PSMA ADC exhibited a high level of tumor-specific activity.
About Prostate Cancer
Prostate cancer is the most common form of cancer affecting men in
About Progenics
The
This press release may contain projections and other forward-looking statements regarding future events. Such statements are predictions only, and are subject to risks and uncertainties that could cause actual events or results to differ materially. These risks and uncertainties include, among others, the cost, timing and results of clinical trials and other development activities; the unpredictability of the duration and results of regulatory review of New Drug Applications and Investigational NDAs; market acceptance for approved products; generic and other competition; the possible impairment of, inability to obtain and costs of obtaining intellectual property rights; and possible safety or efficacy concerns, general business, financial and accounting matters, litigation and other risks. More information concerning Progenics and such risks and uncertainties is available on its
website, and in its press releases and reports it files with the
Additional information concerning Progenics and its business may be available in press releases or other public announcements and public filings made after this release.
(PGNX-C)
CONTACT:Amy Martini Corporate Affairs (914) 789-2816 amartini@progenics.com
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