Badran EF, Battah HA, Akl KF, Khalil RW, Al Amori I. Detection of novel LAMA3 mutation in Herlitz junctional epidermolysis bullosa in a Jordanian family.
Australas J Dermatol 2013;
54:218-21. [PMID:
22963541 DOI:
10.1111/j.1440-0960.2012.00945.x]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2012] [Accepted: 06/18/2012] [Indexed: 11/29/2022]
Abstract
The Herlitz junctional epidermolysis bullosa (H-JEB) subtype usually presents as a severe lethal inherited variant of epidermolysis bullosa (EB) caused by a homozygous mutation in the genes LAMA3, LMAB3, or LAMAC3. Each gene encodes one of the three chains of heterotrimer laminin-332 proteins (including the alpha-3 chain, beta-3 chain and gamma-2-chain) responsible for the adherence of the epidermis to the underlying dermis. The aim of this report is to add to the existing knowledge about EB by describing a novel mutation in a gene responsible for genodermatosis. A case of a Jordanian male neonate, born to healthy, first cousin consanguineous parents, who developed nonhealing blistering skin and mucous membrane lesions, crusted erosions with significant granulation tissue and dystrophic nails immediately after birth is described. The patient was diagnosed as having a novel LAMA3 mutation causing (H-JEB) by immunofluorescence mapping and molecular analysis. Both parents and this baby's sibling were shown to be heterozygous carriers of the same mutation. Pre-implantation diagnosis using molecular analysis for subsequent pregnancies in this family is crucial for managing any new pregnancy.
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