| Term Name: | proximal symphalangism 1 | 
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| Synonyms: | |
| Definition: | A proximal symphalangism that is characterized by ankylosis of the proximal interphalangeal joints, carpal and tarsal bone fusion, and, in some cases, conductive deafness and that has_material_basis_in heterozygous mutation in the NOG gene on chromosome 17q22. | 
| Ontology: | Human Disease [DOID:0080787] ( DOID:0080787 ) |