Clinical features and WNT10A mutations in seven unrelated cases of Schöpf-Schulz-Passarge syndrome.

BACKGROUND

Schöpf-Schulz-Passarge syndrome (SSPS) is an autosomal recessive form of ectodermal dysplasia resulting from mutations in WNT10A.

OBJECTIVES

To document the spectrum of clinical features and search for pathogenic mutations in seven unrelated cases of SSPS.

METHODS

Clinical examination of patients and Sanger sequencing of genomic DNA spanning the coding exons and flanking spice sites of WNT10A.

RESULTS

Most subjects had bilateral eyelid cysts and some degree of palmoplantar keratoderma, although nail, hair, and teeth abnormalities were variably present. Bi-allelic pathogenic mutations in WNT10A were found in all seven subjects. New mutations comprised p.Glu390*, p.Ser270Arg, and p.Cys362Arg; the recurrent mutations were p.Cys107* and p.Ala131Thr.

CONCLUSIONS

This study reveals the range of ectodermal pathology in cases of SSPS that result from WNT10A mutations. Eyelid cysts provide a useful clinical clue to diagnosing SSPS which may be less rare than is currently appreciated.