Figure 1. Pedigree of the family segregating AR PHNED and phenotypic features of affected family members.

(A) Pedigree of the consanguineous Pakistani family with PHNED (modified from [2]). Affected individuals are represented by filled symbols. Haplotypes are shown below each individual with microsatellite marker alleles on chromosome 12p11.1-q14.3 used for linkage analysis, as well as the relative position of the KRT74 variant identified. Individuals V:1 and V:3 were selected for exome sequencing. (B) Patients V:2 (panels i, ii), V:3 (panels iii, iv) and V:7 (panels v, vi) show hypotrichosis with brittle hair of the scalp and dystrophic, slightly spoon-shaped nails with distal onycholysis and mild micronychia.