Whole-exome sequencing identifies ADAM10 mutations as a cause of reticulate acropigmentation of kitamura, a clinical entity distinct from dowling-degos disease

Michihiro Kono, Kazumitsu Sugiura, Mutsumi Suganuma, Masahiro Hayashi, Hiromichi Takama, Tamio Suzuki, UKayoko Matsunaga, Yasushi Tomita, Masashi Akiyama

研究成果: Article

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Reticulate acropigmentation of Kitamura (RAK) is a rare genetic disorder of cutaneous pigmentation with an autosomal dominant pattern of inheritanceanda high penetration rate.Thecharacteristic skin lesions are reticulate, slightly depressed pigmented macules mainly affecting the dorsa of the hands and feet, which first appear before puberty and subsequently expand to the proximal limb and the trunk. To identify mutations that cause RAK, we performed exome sequencing of four family members in a pedigree with RAK. Fifty-three SNV/Indels were considered as candidate mutations after some condition narrowing. We confirmed the mutation status in each candidate gene of four othermembers in the same pedigree to find the gene that matched the mutation status and pheno type of each member. Amutation in ADAM10 encodingazinc metalloprotease, adisintegrinand metalloprotease domain-containing protein 10 (ADAM10), was identified in theRAKfamily. ADAM10 is known to be involved in the ectodomain shedding of various substrates in the skin. Sanger sequencing of four additional unrelated RAK patients revealed four additional ADAM10 mutations. We identified a total of three truncating mutations, a splice site mutation and a missense mutation in ADAM10. We searched for mutations in the KRT5 gene, a causative gene for the similar pigmentation disorder Dowling-Degos disease (DDD), in all the patients and found no KRT5 mutation. These results reveal that mutations in ADAM10 are a cause of RAK and that RAK is an independent clinical entity distinct from DDD.

元の言語English
記事番号ddt207
ページ(範囲)3524-3533
ページ数10
ジャーナルHuman molecular genetics
22
発行部数17
DOI
出版物ステータスPublished - 01-09-2013

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

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