FAM92A Underlies Nonsyndromic Postaxial Polydactyly in Humans and an Abnormal Limb and Digit Skeletal Phenotype in Mice.
FAM92A Underlies Nonsyndromic Postaxial Polydactyly in Humans and an Abnormal Limb and Digit Skeletal Phenotype in Mice.
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FAM92A是人类中的非乳状后多态度的基础,小鼠中的异常肢体和数字骨骼表型。
DOI:
10.1002/jbmr.3594
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发表时间:
2019-03
期刊:
影响因子:
--
通讯作者:
Leal SM
中科院分区:
文献类型:
--
作者:
Schrauwen I;Giese AP;Aziz A;Lafont DT;Chakchouk I;Santos-Cortez RLP;Lee K;Acharya A;Khan FS;Ullah A;Nickerson DA;Bamshad MJ;Ali G;Riazuddin S;Ansar M;Ahmad W;Ahmed ZM;Leal SM
Polydactyly is a common congenital anomaly of the hand and foot. Postaxial polydactyly (PAP) is characterized by one or more posterior or postaxial digits. In a Pakistani family with autosomal recessive nonsyndromic postaxial polydactyly type A (PAPA), we performed genomewide genotyping, linkage analysis, and exome and Sanger sequencing. Exome sequencing revealed a homozygous nonsense variant (c.478C>T, p.[Arg160*]) in the FAM92A gene within the mapped region on 8q21.13-q24.12 that segregated with the PAPA phenotype. We found that FAM92A is expressed in the developing mouse limb and E11.5 limb bud including the progress zone and the apical ectodermal ridge, where it strongly localizes at the cilia level, suggesting an important role in limb patterning. The identified variant leads to a loss of the FAM92A/Chibby1 complex that is crucial for ciliogenesis and impairs the recruitment and the colocalization of FAM92A with Chibby1 at the base of the cilia. In addition, we show that Fam92a−/− homozygous mice also exhibit an abnormal digit morphology, including metatarsal osteomas and polysyndactyly, in addition to distinct abnormalities on the deltoid tuberosity of their humeri. In conclusion, we present a new nonsyndromic PAPA ciliopathy due to a loss-of-function variant in FAM92A.
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影响因子:
30.8
作者:
Kircher, Martin;Witten, Daniela M.;Jain, Preti;O'Roak, Brian J.;Cooper, Gregory M.;Shendure, Jay
通讯作者:
Shendure, Jay
影响因子:
5.2
作者:
Galjaard, RJH;Smits, APT;Heutink, P
通讯作者:
Heutink, P
影响因子:
2.5
作者:
Biesecker, Leslie G.
通讯作者:
Biesecker, Leslie G.
影响因子:
9.8
作者:
O'Connell, JR;Weeks, DE
通讯作者:
Weeks, DE
影响因子:
30.8
作者:
Abecasis, GR;Cherny, SS;Cardon, LR
通讯作者:
Cardon, LR