has material basis in germline mutation in HRURF Marie Unna hereditary hypotrichosis hypotrichosis 4 https://github.com/monarch-initiative/mondo/issues/6357 https://www.malacards.org/card/hypotrichosis_4 MONDO:0100522 hypotrichosis type 4 MESH:C567718 hypotrichosis, Marie Unna type, 1 UMLS:C2750815 hypotrichosis 4 MEDGEN:413053 Marie Unna hereditary hypotrichosis 1 HYPT4 GARD:0015078 DOID:0110701 OMIM:146550 MUHH1