Sir, Congenital anonychia or its milder phenotypic variant hyponychia is a disorder with total or partial absence of fingerand toe-nails (1). Some congenital anonychia or hyponychia is associated with skeletal, limb and ectodermal developmental abnormalities, such as nailpatella syndrome, Coffin-Siris syndrome and ectodermal dysplasias. However, other patients show only anonychia or hyponychia without any associated disorder. Recently, homozygous and compound heterozygous mutations in the secreted Wnt signalling component R-spondin 4 (RSPO4) gene have been identified as responsible for autosomal recessive congenital anonychia or hyponychia (1–3). We report here a case of congenital hyponychia in a patient whose mother showed a similar hyponychia. However, the patient had no mutation in RSPO4.