Deafness, Autosomal Dominant 31, also known as dfna31, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and deafness, autosomal dominant 13. An important gene associated with Deafness, Autosomal Dominant 31 is DFNA31 (Deafness, Autosomal Dominant 31). Related phenotype is old-aged sensorineural hearing impairment.