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Summary Background Autosomal recessive congenital ichthyosis (ARCI) is a heterogeneous group of diseases of keratinization, characterized primarily by abnormal skin scaling over the whole body surface. Recently, ARCI has been designated to include the major forms of lamellar ichthyosis (LI), congenital ichthyosiform erythroderma (CIE) and harlequin ichthyosis. The first two conditions are the most common major clinical subtypes, and both are caused principally by mutations in the transglutaminase 1 gene, TGM1, although other genes may be responsible in some cases. Aim To identify the genetic mutations underlying LI in a Chinese family with LI, and to review all the known TGM1 mutations in Chinese patients with ARCI. Methods The proband had the severe classic LI phenotype, and was a member of a four-generation family with close blood relationships. We sequenced the DNA of the patients and close relatives. We also reviewed 13 Chinese patients with ARCI from 8 reported families, comprising 10 patients with LI, 2 with CIE and 1 with bathing suit ichthyosis. Results We characterized 14 different TGM1 mutations. Six of these were reported in other ethnic groups initially and later in Chinese patients, while the remaining eight were first described in Chinese patients. Of the latter, five have been reported only in Chinese patients, while the remaining three have also been reported in other ethnic groups. Conclusion This study expands the current spectrum on TGM1 mutation and increases the knowledge of TGM1 mutation characteristics.

] Suenaga M. Genetical studies on skin diseases. VII. Dyschromatosis universalis hereditaria in five generations. Tohoku J Exp Med 1952;55:373–6. ] Urabe K, Hori Y, Dyschromatosis. Semin Cutan Med Surg 1997;16:81–5. Chaoxia Lu, Jie Liu, Fang Liu, Yaping Liu, Donglai Ma*, Xue Zhang** McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine Peking Union Medical College, Beijing 100005, China; Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100073, China

ejd.2013.2121 Auteur(s) : XueQi Zhang tigar@aliyun.com, JingJing Liu, XiaoHong Shao, JianFeng Cai, ShenMeng Gao, XiaoHua Lin, YueYue Yuan, ZhiMing Li, BingXu Li, YunSheng Xu First Affiliated Hospital, Wenzhou Medical College, No 1 Fuxue lane, 325000 Wenzhou, Zhejiang, China We report a 19-year-old patient (III10) from a four-generation Chinese pedigree with desquamation covering almost all the body since about 10 months of age. The development of cutaneous lesions initially occurred on the extremities [...]