has material basis in germline mutation in FLT4 lymphatic malformation 1 https://github.com/monarch-initiative/mondo/issues/2768 https://www.malacards.org/card/hereditary_lymphedema_i https://www.malacards.org/card/hereditary_lymphedema_ia https://www.malacards.org/card/lymphatic_malformation_1 primary congenital lymphedema Nonne’s syndrome lymphedema, hereditary, type 1A GARD:0003328 hereditary lymphedema caused by mutation in FLT4 hereditary lymphedema type I early onset lymphedema DOID:0070210 Nonne-Milroy lymphedema DOID:0070212 congenital hereditary lymphedema OMIM:153100 Nonne-Milroy syndrome Milroy disease Orphanet:79452 lymphedema, early-onset lymphedema, hereditary, 1A MONDO:0007919 FLT4 hereditary lymphedema Any hereditary lymphedema in which the cause of the disease is a mutation in the FLT4 gene. hereditary lymphedema 1 UMLS:C1704423 LMPH1A MEDGEN:309963 Nonne-Milroy disease SCTID:399889006 lymphatic malformation