spinal muscular atrophy with lower extremity predominant 1
spinal muscular atrophy with lower extremity predominant 2A
spinal muscular atrophy with lower extremity predominant 2B
A spinal muscular atrophy with lower extremity predominance that is characterized by decreased fetal movements and are congenital contractures consistent with arthrogryposis multiplex congenita and that has_material_basis_in heterozygous mutation in the BICD2 gene on chromosome 9q22. (DO)