Perinatal hypophosphatasia caused by uniparental isodisomy.
Perinatal hypophosphatasia caused by uniparental isodisomy.
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单亲异构引起的围产期低磷酸酯酶症。
DOI:
10.1016/j.bone.2013.12.009
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发表时间:
2014
期刊:
影响因子:
4.1
通讯作者:
Shimada T.
中科院分区:
文献类型:
--
作者:
Watanabe A;Satoh S;Fujita A;Naing BT;Orimo H;Shimada T.
Hypophosphatasia (HPP) is an inherited disorder characterized by defective bone mineralization caused by mutations in the alkaline phosphatase gene (ALPL). Clinically, the disease spans a great continuum of disease severity and six forms can be distinguished according to the age of onset. The most severe is the autosomal recessive perinatal form, a major prenatal skeletal dysplasia in Japan. TheALPLmutation c.1559delT causes perinatal HPP and occurs frequently in the Japanese. Most patients with perinatal HPP in Japan are homozygous for c.1559delT, and their parents are usually heterozygous with no evidence of consanguinity.Here we identified a fetus with perinatal HPP resulting from an unusual mechanism known as paternal uniparental isodisomy (UPD) of chromosome 1. Sequence analysis ofALPLin the patient revealed the presence of the homozygous mutation c.1559delT. We suspected UPD because the father and mother were heterozygous and wild type, respectively. Analysis of polymorphic microsatellite markers spanning chromosome 1 and whole-genome arrays revealed a uniparental inheritance from the father and excluded deletions orde novomutations.This is the first description of perinatal HPP caused by UPD. This report also emphasizes the low recurrence risk of a non-Mendelian inheritance pattern in UPD and the value of determining parental genotypes with homozygous mutations in a patient to confirm whether the condition is caused by UPD or not, even when the mutation is detected as a hot spot, as described in the literature.
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影响因子:
4.1
作者:
Hofmann, C.;Liese, J.;Mentrup, B.
通讯作者:
Mentrup, B.
DOI:
10.1016/c2010-0-67110-0
发表时间:
2012
期刊:
--
影响因子:
--
作者:
R. Thakker;M. Whyte;J. Eisman
通讯作者:
J. Eisman
影响因子:
2
作者:
Turner, Claire L. S.;Bunyan, David J.;Temple, I. Karen
通讯作者:
Temple, I. Karen
影响因子:
2
作者:
Nimmo, Graeme;Monsonego, Sarah;Braverman, Nancy
通讯作者:
Braverman, Nancy
影响因子:
158.5
作者:
Whyte, Michael P.;Greenberg, Cheryl R.;Landy, Hal
通讯作者:
Landy, Hal