has material basis in germline mutation in HPGD isolated congenital digital clubbing https://github.com/monarch-initiative/mondo/issues/6876 https://www.malacards.org/card/digital_clubbing_isolated_congenital isolated congenital acropachy digital clubbing, isolated congenital GARD:0017117 UMLS:C0345408 Isolated congenital digital clubbing is a rare genodermatosis disorder characterized by enlargement of the terminal segments of fingers and toes with thickened nails without any other abnormality. isolated congenital nail clubbing clubbing of digits OMIM:119900 MONDO:0007343 Orphanet:217059 MEDGEN:576901 icd11.foundation:130631845 acropachy, hereditary inherited isolated nail anomaly disorder of development or morphogenesis