Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-35667
Minder, E I; Schneider-Yin, X; Mamet, R; Horev, L; Neuenschwander, S; Baumer, A; Austerlitz, F; Puy, H; Schoenfeld, N (2010). A homoallelic FECH mutation in a patient with both erythropoietic protoporphyria and palmar keratoderma. Journal of the European Academy of Dermatology and Venereology, 24(11):1349-1353.
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Background Erythropoietic protoporphyria (EPP) is a hereditary disorder caused by the deficiency of ferrochelatase (FECH) in the haem biosynthetic pathway. In the majority of families, EPP is transmitted as a pseudodominant trait. Autosomal recessive form of EPP is found in only about 3% of the families. Objectives In this study, we describe a 6-year-old boy who suffered from both EPP and palmar keratoderma. Methods and Results A novel homoallelic missense mutation (p.Ser318Tyr) was identified in the FECH gene. In addition, a region of homozygosity of approximately 6.8 Mb was observed in chromosome 18 of the patient by both microsatellite and SNP array. The parents of the patient, both of Palestinian (Jordanian) origin, were heterozygous for the S318Y mutation, although no history of consanguinity was known. Microsatellite genotyping identified a partial haplotype from each parent that corresponds to the region of homozygosity in the patient. Assuming S318Y is a founder mutation, the number of generations separating the two parents from their common ancestor from whom they inherited S318Y was estimated as 21.7 (95% CI 3.42-69.7). Conclusion EPP was therefore inherited as an autosomal recessive trait in the family. This study confirms the association between palmar keratoderma and autosomal recessive EPP.
|Item Type:||Journal Article, refereed, original work|
|Communities & Collections:||04 Faculty of Medicine > Institute of Medical Genetics|
04 Faculty of Medicine > Functional Genomics Center Zurich
08 University Research Priority Programs > Systems Biology / Functional Genomics
|DDC:||570 Life sciences; biology|
610 Medicine & health
|Deposited On:||28 Sep 2010 15:02|
|Last Modified:||28 Nov 2013 00:07|
|Free access at:||PubMed ID. An embargo period may apply.|
|Citations:||Web of Science®. Times cited: 3|
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