Different proximal and distal rearrangements of chromosome 7q associated with holoprosencephaly

被引:20
|
作者
Benzacken, B
Siffroi, JP
LeBourhis, C
Krabchi, K
Joye, N
Maschino, F
Viguie, F
Soulie, J
Gonzales, M
Migne, G
Bucourt, M
EnchaRazavi, F
Carbillon, L
Taillemite, JL
机构
[1] HOP TENON,LAB HIST BIOL REPROD & CYTOGENET,F-75020 PARIS,FRANCE
[2] HOP JEAN VERDIER,LAB HISTOL EMBRYOL CYTOGENET & BIOL REPROD,F-93 BONDY,FRANCE
[3] HOP ST ANTOINE,LAB EMBRYOL PATHOL & CYTOGENET,F-75012 PARIS,FRANCE
[4] HOP NOTRE DAME DE BON SECOURS,SERV BIOL,F-75674 PARIS,FRANCE
[5] HOP JEAN VERDIER,SERV ANATOMOPATHOL,F-93 BONDY,FRANCE
[6] HOP HENRI MONDOR,SERV HISTOL EMBRYOL,F-94 CRETEIL,FRANCE
[7] HOP JEAN VERDIER,SERV GYNECOL OBSTET,F-93 BONDY,FRANCE
关键词
holoprosencephaly; chromosome; 7q; reciprocal translocation; Sonic Hedgehog gene;
D O I
10.1136/jmg.34.11.899
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
Four new cases of holoprosencephaly are described in fetuses exhibiting abnormal karyotypes with different distal and proximal rearrangements of the long arm of chromosome 7. Three of them showed terminal deletions of chromosome 7q, confirming the importance of the 7q36 region in holoprosencephaly. The karyotype of the fourth fetus showed an apparently balanced de novo translocation, t(7;13) (q21.2;q33), without any visible loss of the distal part of chromosome 7q. The involvement of new genes, different from the human Sonic Hedgehog gene (hShh) responsible for holoprosencephaly, or a positional effect are discussed.
引用
收藏
页码:899 / 903
页数:5
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