has material basis in germline mutation in KCNH1 Zimmermann-Laband syndrome Zimmermann-Laband syndrome 1 fibromatosis, gingival, with abnormal fingers, fingernails, Nose, and ears, and splenomegaly Zimmermann-Laband syndrome caused by mutation in KCNH1 NORD:1344 UMLS:C4551773 OMIM:135500 MEDGEN:1639277 Any Zimmermann-Laband syndrome in which the cause of the disease is a mutation in the KCNH1 gene. GARD:0015071 Laband Syndrome Zimmermann-Laband syndrome 1 MONDO:0024526 ZLS1 KCNH1 Zimmermann-Laband syndrome KCNH1 associated disorder