Cycle’s Harliku Approved for Alkaptonuria

FDA has approved a Cycle Pharmaceuticals NDA for Harliku (nitisinone) tablets for reducing urine homogentisic acid (HGA) in adult patients with alkaptonuria (AKU), an ultra-rare genetic metabolic disorder in which patients have a buildup of HGA that leads to osteoarthritis, ochronosis, and complications in the kidneys and heart. Approval is based on data from a randomized NIH study in 40 patients with AKU. The data showed that nitisinone helped patients improve pain and energy levels, and physical functioning after three years of treatment, according to the company. The most common adverse events reported included elevated tyrosine levels, thrombocytopenia and keratitis.

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