GALE-301 & GALE-302

Compound: GALE-301
Status: Phase 1/2a Completed
Disease: Ovarian and Endometrial Cancer

Compound: GALE-301 & GALE-302
Status: Phase 1/2a Completed
Disease: Ovarian and Breast Cancer

Our second immunotherapy franchise targets folate binding protein (FBP) receptor-alpha. FBP is a well-validated therapeutic target that is highly over-express in ovarian, endometrial and breast cancers, and is the source of immunogenic peptides that can stimulate cytotoxic T lymphocytes (CTLs) to recognize and destroy FBP-expressing cancer cells. Current treatments after surgery for these diseases are principally with platinum based chemotherapeutic agents. These patients suffer a high recurrence rate and most relapse with an extremely poor prognosis. GALE-301 and GALE-302 are immunogenic peptides that consist of a peptide derived from FBP combined with GM-CSF for the prevention of cancer recurrence in the adjuvant setting. GALE-301 is the E39 peptide, while GALE-302 is an attenuated version of this peptide, known as E39’. Two early stage clinical trials have been completed with our FBP peptides in ovarian, endometrial, and breast cancers. In June 2016, the U.S. Food and Drug Administration (FDA) granted two orphan-drug designations for the treatment (including prevention of recurrence) of ovarian cancer: one for GALE-301 (E39), and one for GALE-301 (E39) and GALE-302 (E39’).

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About the Disease

According to the NCI Surveillance, Epidemiology, and End Results (SEER) Program, new cases of ovarian cancer occur at an annual rate of 11.9 per 100,000 women in the U.S., with an estimated 22,280 new cases and 14,240 deaths in 2016. Approximately 46.2% of ovarian cancer patients are expected to survive five years after diagnosis. Approximately 1.3% of women will be diagnosed with ovarian cancer at some point during their lifetime (2011 - 2013 data). The prevalence data from 2013 showed an estimated 195,767 women living with ovarian cancer in the United States.

Due to the lack of specific symptoms, the majority of ovarian cancer patients are diagnosed at later stages of the disease, with an estimated 80% of women presenting with advanced-stage (III or IV) disease. These patients have their tumors routinely surgically debulked to minimal residual disease, and then are treated with platinum- and/or taxane-based chemotherapy. While many patients respond to this treatment regimen and become clinically free-of-disease, the majority of these patients will relapse. Depending upon their level of residual disease, the risk for recurrence after completion of primary therapy is approximately 70%. Unfortunately for these women, once the disease recurs, treatment options are limited and the disease is most likely incurable.