BERKELEY, CA, USA I June 28, 2016 I XOMA Corporation (Nasdaq:XOMA), a leader in the discovery and development of therapeutic antibodies, announced today it has initiated its Phase 2 proof-of-concept study for XOMA 213.  XOMA 213 (formerly referred to as LFA102) is a monoclonal antibody that neutralizes prolactin induced signaling.  Prolactin is a protein that in normal post-partum females enables the production of milk.  In some cases, including prolactinomas, which are benign tumors of the pituitary gland in both men and women, excess secretion can lead to various clinically significant abnormal signs and symptoms.

The open-label, mechanism of action, single-dose, multi-center study is designed to evaluate two dose levels of XOMA 213 in up to 35 subjects and confirm its ability to curtail prolactin signaling.  The study will take place in Spain and safety will be monitored throughout.

“By initiating this mechanism of action study for XOMA 213, we bring a second endocrine-focused asset into mid-stage development,” said Paul Rubin, M.D., Senior Vice President, Research and Development, and Chief Medical Officer at XOMA.  “Prolactinomas, which are benign tumors of the pituitary gland, have serious medical consequences, particularly infertility and osteoporosis.  Ten to twenty percent of patients do not respond to or are intolerant of current standard of care medications.  Based upon the results from this proof-of-concept study, we will be able to determine the value of further developing this antibody for treating patients with symptomatic hyperprolactinemia.”

About XOMA Corporation
XOMA Corporation is a leader in the discovery and development of therapeutic antibodies.  The Company’s innovative product candidates result from its expertise in developing ground-breaking monoclonal antibodies, including allosteric antibodies, which have created new opportunities to potentially treat a wide range of human diseases. XOMA’s scientific research has produced a portfolio of five endocrine assets, each of which has the opportunity to address multiple indications.  The Company’s lead product candidate, XOMA 358, is an allosteric monoclonal antibody that reduces insulin receptor activity, which could have a major impact on hyperinsulinism.  The Company recently initiated Phase 2 development activities for XOMA 358 in patients with congenital hyperinsulinism and in patients who experience hypoglycemia following gastric bypass surgery. For more information, visit www.xoma.com.

SOURCE: XOMA