ABO-102 and ABO-101 Clinical Data Presentations at the 17th Annual WORLDSymposium™ Feb 11, 2021 Updated results of Transpher A, a multicenter, single- dose, phase 1/2 clinical trial of ABO-102 gene therapy for Sanfilippo syndrome type A (MPS IIIA) Updated Results of Transpher B, a Multicenter, Single- Dose, Phase 1/2 Clinical Trial of ABO-101 Gene Therapy for Sanfilippo Syndrome Type B (Mucopolysaccharidosis IIIB)