Ultragenyx Announces Positive Results From a Long-Term Phase 1/2 Study of KRN23 in Adult Patients With X-Linked Hypophosphatemia
All Patients Continued to Demonstrate Increases in Serum Phosphorus and the Majority Maintained Levels in the Normal Range
NOVATO, Calif., Sept. 15, 2014 (GLOBE NEWSWIRE) -- Ultragenyx Pharmaceutical Inc. (Nasdaq:RARE), a biopharmaceutical company focused on the development of novel products for rare and ultra-rare diseases, today announced the presentation of results from a long-term Phase 1/2 extension study, conducted by Kyowa Hakko Kirin Pharma, Inc., of the investigational fully human anti-FGF23 monoclonal antibody KRN23 (UX023) in adult patients with X-linked hypophosphatemia (XLH). The cumulative 16-month data, combining the four-month dose escalation period data from INT-001 and the 12-month extension data from INT-002, were presented at the American Society of Bone and Mineral Research (ASBMR) Annual Meeting in Houston.
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