Familial deletion 11q14.3-q22.1 without apparent phenotypic consequences: a haplosufficient 8.5 Mb region.
Am J Med Genet A
; 146A(20): 2668-72, 2008 Oct 15.
Article
en En
| MEDLINE
| ID: mdl-18798310
We present the prenatal diagnosis of a chromosome 11q14.3-q22.1 deletion identified in three generations without apparent phenotypic consequences. A 25-year-old G2, P1 woman underwent amniocentesis at 15 weeks' gestation because of a positive result for Down syndrome maternal serum-screening test (1/70). The fetal karyotype revealed an interstitial deletion of the long arm of chromosome 11 confirmed by CGH and FISH: 46,XX,del(11)(q14.3q22.1). The mother and grandfather of the fetus presented the same interstitial deletion with a little if any phenotype effect. The pregnancy was carried to term and resulted in the birth of a normal girl. To our knowledge, only one case of a chromosome 11q14.3-q21 deletion without phenotypic anomalies has been reported. Our study allows the initially described haplosufficient region to be extended from 3.6 Mb to at least 8.5 Mb. This large deletion was compatible with fertility and apparently normal phenotype. Identification of such chromosomal regions is important for prenatal diagnosis and genetic counseling.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Cromosomas Humanos Par 11
/
Deleción Cromosómica
Tipo de estudio:
Prognostic_studies
Límite:
Female
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Humans
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Male
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Newborn
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Pregnancy
Idioma:
En
Revista:
Am J Med Genet A
Asunto de la revista:
GENETICA MEDICA
Año:
2008
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Estados Unidos