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Review
. 2003 Jan;148(1):1-13.
doi: 10.1046/j.1365-2133.2003.05220.x.

The molecular genetics of the genodermatoses: progress to date and future directions

A D Irvine  1 , W H I McLean
Affiliations
Review

The molecular genetics of the genodermatoses: progress to date and future directions

A D Irvine et al. Br J Dermatol. 2003 Jan.

Abstract

The Human Genome Mapping Project and allied rapid advances in genetic technology over the past decade have facilitated accurate association of allelic variations in several genes with specific skin phenotypes. Currently the genetic bases of the majority of the more common genodermatoses have been elucidated. In scientific terms this work has been extraordinarily successful and has yielded many new biological insights. These advances, although exciting, have yet to be translated into direct benefit for patients with these diseases. Genetic counselling has been greatly aided by gene identification, by the better understanding of genotype-phenotype correlation and by the disclosure of unexpected genetic mechanisms in some families. Knowledge of the molecular basis of these disorders has also been vital in enabling DNA-based prenatal diagnosis in several conditions and DNA-based preimplantation diagnosis has been used in a selected few. While this successful period of gene mapping is now nearing completion, progress towards the next goal, that of developing therapeutic strategies based on the knowledge of these underlying genetic mechanisms, has proven frustratingly slow. Despite the ready access to the skin compared with solid internal organs, the challenges of cutaneous gene therapy are legion and many technical issues need to be surmounted to enable gene replacement or modification of gene expression to have a useful role in these disorders. In this article we make a comprehensive review of progress to date in gene identification, genotype-phenotype correlation, prenatal diagnosis and cutaneous gene therapy, and we examine future directions for research in this field.

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