FDA approves apitegromab as an add-on in nonambulatory spinal muscular atrophy: the SAPPHIRE evidence lineage now has to carry an add-on question through HTA. https://www.mattheneus.com/editorial/fda-apitegromab-isembyld-nonambulatory-sma-add-on-approval-sapphire-2026-09-28 #HTA #RegulatoryAffairs
