FDA Grants Accelerated Approval to Denali's Avlayah for Hunter Syndrome, Defying Rare Disease Rejection Trend on March 26, 2026 alfa Approved Avlayah Denali Mucopolysaccharidosis II Rare Diseases Regenxbio rejection tividenofusp United States Food and Drug Administration +
FDA Delays Denali's Hunter Syndrome Therapy Decision by Three Months on October 14, 2025 alfa amendment Biologics License Application Clinical pharmacology discipline Deferred Denali Mucopolysaccharidosis II review extension tividenofusp United States Food and Drug Administration +