Abstract
Congenital recessive ichthyoses represent a vast and markedly heterogeneous group of diseases that have been mapped to at least seven distinct chromosomal loci. In this study, we ascertained two consanguineous families presenting with congenital ichthyosis. Using homozygosity mapping, we identified a 6.5 cM homozygous region on 12p11.2-q13 shared by all affected individuals. Multipoint logarithm of odds ratio (LOD) score analysis placed the new locus between markers D12S345 and D12S390 with a maximum LOD score of 4.79 at marker CH12SSR13. This region harbors PPHLN1, encoding periphilin 1, a protein involved in the cornification process. No deleterious mutations were identified within the coding region of this gene, suggesting the existence of another gene associated with epidermal differentiation on 12p11.2-q13.
Original language | English |
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Pages (from-to) | 456-462 |
Number of pages | 7 |
Journal | Journal of Investigative Dermatology |
Volume | 125 |
Issue number | 3 |
DOIs | |
State | Published - Sep 2005 |
Externally published | Yes |
Bibliographical note
Funding Information:We are grateful to the family members for their participation in our study. We wish to thank Dr Vered Friedman for services in nucleic acid analysis, and Ma'ayan Fishelson and Anna Tzemach for computer assistance. This study was supported in part by a grant provided by the Ruth and Allen Ziegler Fund for Pediatric Research.
Funding
We are grateful to the family members for their participation in our study. We wish to thank Dr Vered Friedman for services in nucleic acid analysis, and Ma'ayan Fishelson and Anna Tzemach for computer assistance. This study was supported in part by a grant provided by the Ruth and Allen Ziegler Fund for Pediatric Research.
Funders | Funder number |
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Ruth and Allen Ziegler Fund for Pediatric Research |
Keywords
- Cornification
- Genetic
- Homozygosity
- Ichthyosis
- Mapping
- Periphilin