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Mol Genet Genomic Med. 2014 May;2(3):217-28. doi: 10.1002/mgg3.61. Epub 2014 Feb 11.

CTSC and Papillon-Lefèvre syndrome: detection of recurrent mutations in Hungarian patients, a review of published variants and database update.

Molecular genetics & genomic medicine

Nikoletta Nagy, Péter Vályi, Zsanett Csoma, Adrienn Sulák, Kornélia Tripolszki, Katalin Farkas, Ekaterine Paschali, Ferenc Papp, Lola Tóth, Beáta Fábos, Lajos Kemény, Katalin Nagy, Márta Széll

Affiliations

  1. Department of Medical Genetics, University of Szeged Szeged, Hungary ; Department of Dermatology and Allergology, University of Szeged Szeged, Hungary ; Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged Szeged, Hungary.
  2. Department of Periodontology, University of Szeged Szeged, Hungary.
  3. Department of Dermatology and Allergology, University of Szeged Szeged, Hungary.
  4. Department of Medical Genetics, University of Szeged Szeged, Hungary.
  5. Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged Szeged, Hungary.
  6. Department of Pediatrics, University of Szeged Szeged, Hungary.
  7. Mór Kaposi Teaching Hospital Kaposvár, Hungary.
  8. Department of Dermatology and Allergology, University of Szeged Szeged, Hungary ; Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged Szeged, Hungary.
  9. Department of Medical Genetics, University of Szeged Szeged, Hungary ; Dermatological Research Group of the Hungarian Academy of Sciences, University of Szeged Szeged, Hungary.

PMID: 24936511 PMCID: PMC4049362 DOI: 10.1002/mgg3.61

Abstract

Papillon-Lefèvre syndrome (PLS; OMIM 245000) is an autosomal recessive condition characterized by palmoplantar hyperkeratosis and periodontitis. In 1997, the gene locus for PLS was mapped to 11q14-21, and in 1999, variants in the cathepsin C gene (CTSC) were identified as causing PLS. To date, a total of 75 different disease-causing mutations have been published for the CTSC gene. A summary of recurrent mutations identified in Hungarian patients and a review of published mutations is presented in this update. Comparison of clinical features in affected families with the same mutation strongly confirm that identical mutations of the CTSC gene can give rise to multiple different phenotypes, making genotype-phenotype correlations difficult. Variable expression of the phenotype associated with the same CTSC mutation may reflect the influence of other genetic and/or environmental factors. Most mutations are missense (53%), nonsense (23%), or frameshift (17%); however, in-frame deletions, one splicing variant, and one 5' untranslated region (UTR) mutation have also been reported. The majority of the mutations are located in exons 5-7, which encodes the heavy chain of the cathepsin C protein, suggesting that tetramerization is important for cathepsin C enzymatic activity. All the data reviewed here have been submitted to the CTSC base, a mutation registry for PLS at http://bioinf.uta.fi/CTSCbase/.

Keywords: Aggressive periodontitis; CTSC gene; Haim–Munk syndrome; Papillon–Lefèvre syndrome

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