Facing inevitable challenges ahead beyond peak performance for its wildly successful cystic fibrosis franchise, Vertex Pharmaceuticals Inc. is continuing to look to the future, announcing Aug. 24 it licensed rights to CRISPR gene-editing technology from Arbor Biotechnologies Inc. Co-founded by Feng Zhang and David Walt, Arbor's tech could figure into new Vertex cell therapies for diabetes, hemoglobinopathies and other diseases.