Jeon In Kyung, Kim Song-Ee, Kim Soo-Chan
Department of Dermatology, Gangnam Severance Hospital, Cutaneous Biology Research Institute, Yonsei University College of Medicine, Seoul, Korea.
J Dermatol. 2014 Apr;41(4):322-4. doi: 10.1111/1346-8138.12413. Epub 2014 Feb 18.
Junctional epidermolysis bullosa (JEB) is a heritable blistering skin disease characterized by separation within the lamina lucida. It is caused by mutations in the LAMA3, LAMB3 and LAMC2 genes encoding the α3-, β3- and γ2-chains, respectively, of laminin-332. JEB Herlitz type (JEB-H) is a lethal blistering disease with severe cutaneous and extracutaneous involvements caused by null mutations in the gene encoding laminin-332. Here, we report a proband with JEB-H who is a compound heterozygote for two novel mutations in LAMC2; a missense mutation (c.79G>A) and an insertion mutation (382insT) leading to a premature termination codon.
交界性大疱性表皮松解症(JEB)是一种遗传性水疱性皮肤病,其特征是在透明层内分离。它是由分别编码层粘连蛋白-332的α3-、β3-和γ2-链的LAMA3、LAMB3和LAMC2基因突变引起的。JEB Herlitz型(JEB-H)是一种致死性水疱性疾病,由编码层粘连蛋白-332的基因中的无效突变引起,伴有严重的皮肤和皮肤外受累。在此,我们报告一名JEB-H先证者,他是LAMC2基因中两个新突变的复合杂合子;一个错义突变(c.79G>A)和一个插入突变(382insT),导致过早终止密码子。