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Phenotypic Variation and Allelic Heterogeneity in Young Patients with Papillon-Lefèvre Syndrome.
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2006 (English)In: Acta Dermato-Venereologica, Vol. 8, 3-7 p.Article in journal (Refereed) Published
Abstract [en]

Papillon-Lefèvre syndrome is an autosomal recessive disorder characterized by palmoplantar hyperkeratosis and aggressive periodontitis. The aim of the study was to identify underlying cathepsin C mutations in 39 subjects with Papillon-Lefèvre syndrome and to explore any phenotypic associations. Genotyping and mutation analyses were performed using standard molecular techniques, and dermatological and oral characteristics were assessed with a semiquantitative clinical score. Three genotypes were present at microsatellite marker D11S1780 and two underlying mutations were identified. The most common genotype (183/183) was associated with an 815G → C mutation in exon 6 resulting in an arginine to proline change at amino acid 272 (R272P). Patients with the 173/173 genotype revealed an exon 7 G300D mutation resulting in a glycine to aspartic acid change at amino acid 300. The mutation in a family with 189/189 genotype remained unknown. A significant difference in hyperkeratosis of the feet was found between the patients with mutations G300D and R272P (p <0.05), but not regarding hands or periodontal condition. Young girls displayed significantly less palmoplantar hyperkeratosis ( p <0.05) than young boys. In conclusion, considerable phenotypic heterogeneity was observed within the two cardinal mutations and in the 189/189 genotype.

Place, publisher, year, edition, pages
2006. Vol. 8, 3-7 p.
Keyword [en]
Odontology
National Category
Dentistry Dentistry
Identifiers
URN: urn:nbn:se:umu:diva-12459OAI: oai:DiVA.org:umu-12459DiVA: diva2:152130
Available from: 2006-09-20 Created: 2006-09-20 Last updated: 2011-01-11Bibliographically approved

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