Arthrogryposis, distal, type 2A (DA2A)
Summary Arthrogryposis, distal, type 2A (DA2A) is also known as Freeman-Sheldon syndrome (FSS) or whistling face syndrome and is caused by heterozygous mutation in the MYH3 gene. Mutations in this gene can also cause distal arthrogryposis type 2B (also known as Sheldon-Hall syndrome, a genetically heterogeneous subtype of distal arthrogryposis caused also by mutations in the