AlveoGene Receives Rare Pediatric Disease Designation (RPDD) from FDA for AVG-002, its Novel, Inhaled Gene Therapy for Lethal Neonatal Surfactant Protein B (SP-B) Deficiency Inherited SP-B deficiency is an ultra-rare monogenic cause of fatal respiratory distress syndrome in newborn infantsClinical estimates for SP-B deficiency have an incidence of 1 in 1 million live...