By Jackson LeeOctober 27, 2025 Business Spruce Biosciences Secures FDA Breakthrough Therapy Status for Promising Sanfilippo Syndrome Type B Treatment Spruce Biosciences has received FDA Breakthrough Therapy designation for Tralesinidase Alfa (TA-ERT), an enzyme replacement therapy targeting Sanfilippo Syndrome Type B (MPS IIIB). This marks a pivotal advancement in rare disease treatment.