Mondo Description Brachydactyly type B2 is a rare, genetic congenital limb malformation disorder characterized by hypoplasia/aplasia of distal and/or middle phalanges in fingers and toes II-V (frequently severe in fingers/toes IV-V, milder in fingers/toes II-III) in association with proximal, and occasionally distal, symphalangism, fusion of carpal/tarsal bones and partial cutaneous syndactyly. Additional reported features include proximal placement of thumbs, sensorineural hearing loss and farsightedness.

Uniprot Description A form of brachydactyly characterized by hypoplasia/aplasia of distal phalanges in combination with distal symphalangism, fusion of carpal/tarsal bones and partial cutaneous syndactyly.

Disease Ontology Description A brachydactyly characterized by hypoplasia/aplasia of distal phalanges, distal symphalangism, fusion of carpal/tarsal bones, and partial cutaneous syndactyly that has_material_basis_in mutations in the NOG gene on chromosome 17q22.