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Rocket Pharma shares climb as FDA approves first therapy for deadly ...

  • On Thursday, the U.S. Food and Drug Administration granted accelerated approval to Rocket Pharmaceuticals' gene therapy KRESLADI for pediatric patients with severe leukocyte adhesion deficiency-I lacking a matched sibling donor.
  • Severe LAD-I is an ultra-rare genetic disorder caused by mutations in the ITGB2 gene that leaves children vulnerable to life-threatening infections; about 75% of untreated patients die before age two.
  • Clinical trial results showed 100% survival at 12 months after infusion without treatment-related serious side effects, while KRESLADI sharply reduced serious infections in study participants.
  • Rocket Pharmaceuticals shares jumped 10% on Friday following the approval, which also earned the company a Rare Pediatric Disease Priority Review Voucher worth $200 million.
  • Despite previous skepticism toward surrogate endpoints, Vinay Prasad, the FDA's head of biologics, stated the agency "continues to exercise significant regulatory flexibilities" during rare-disease therapy reviews.
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Three years after treatment, all 9 patients treated for LAD-I (a rare severe pediatric immunodeficiency) are still alive and free from recurrent episodes of infections that may be fatal to them.

·Madrid, Spain
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Business Wire broke the news in Crystal River, United States on Thursday, March 26, 2026.
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