SNP-chip technology for identification of origins for prenatally detected marker chromosomes / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 447-450, 2013.
Artículo
en Chino
| WPRIM
| ID: wpr-237229
ABSTRACT
<p><b>OBJECTIVE</b>To determine the origin of 1 prenatally detected small supernumerary marker chromosome (sSMC) using SNP-chip technology, and to deduce the underlying mechanism.</p><p><b>METHODS</b>The fetal sample was subjected to karyotype analysis. The identified sSMC was subjected to genom wide scan using a SNP microarray chip. The results were validated with fluorescence in situ hybridization (FISH).</p><p><b>RESULTS</b>The karyotype of the fetus was determined as 46, X, +mar, which was verified by SNP microarray chip analysis as Yp11.2-11.3 duplication, along with loss of Yq11.2 region, FISH analysis has confirmed that the sSMC has derived from the Y chromosome.</p><p><b>CONCLUSION</b>The karyotype of the fetus was determined as 46, X, idic(Y) (pter→ p11.211.2→ pter). Regional deletion of Yq11.2 has been associated with male azoospermia. SNP chip analysis can exclude minor deletions and duplications with a size of more than 1 Mb, which may be applied for verifying difficult cases as well as microdeletion and duplication syndromes upon prenatal diagnosis.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Diagnóstico Prenatal
/
Marcadores Genéticos
/
Embriología
/
Análisis de Secuencia por Matrices de Oligonucleótidos
/
Trastornos de los Cromosomas
/
Polimorfismo de Nucleótido Simple
/
Diagnóstico
/
Genética
/
Cariotipificación
Tipo de estudio:
Estudio diagnóstico
Límite:
Adulto
/
Femenino
/
Humanos
/
Masculino
/
Embarazo
Idioma:
Chino
Revista:
Chinese Journal of Medical Genetics
Año:
2013
Tipo del documento:
Artículo
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