Vertex and Parion Sciences Establish Collaboration to Develop Epithelial Sodium Channel (ENaC) Inhibitors in Cystic Fibrosis and Other Pulmonary Diseases

 – ENaC inhibition aims to restore or improve hydration of cell surfaces in the lungs to improve lung function –

– Parion to receive $80 million up-front payment with potential for additional development and regulatory
milestones and royalty payments –

BOSTON and DURHAM, NCVertex Pharmaceuticals Incorporated (Nasdaq: VRTX) and Parion Sciences today announced that the companies will collaborate to develop investigational epithelial sodium channel (ENaC) inhibitors for the potential treatment of cystic fibrosis (CF) and other pulmonary diseases. Under the agreement, Vertex gains worldwide development and commercial rights to Parion’s investigational ENaC inhibitors, including P-1037 and P-1055, for CF and other pulmonary diseases. P-1037 is currently being evaluated in an exploratory Phase 2a study in people with CF, regardless of genotype, and Vertex and Parion plan to begin an additional Phase 2a study that adds P-1037 to treatment with the investigational combination of lumacaftor and ivacaftor for people with CF who have two copies of the F508del mutation. Parion will receive an $80 million up-front payment from Vertex with the potential to receive additional development and regulatory milestone payments and tiered royalties related to P-1037 and P-1055 in CF and other pulmonary diseases.