Prenatal diagnosis of oculocutaneous albinism type IV and discovery of a novel mutation / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 1-5, 2011.
Artigo
em Chinês
| WPRIM
| ID: wpr-234330
ABSTRACT
<p><b>OBJECTIVE</b>To provide guidance for clinical genetic counseling and prenatal diagnosis of oculocutaneous albinism (OCA) in China.</p><p><b>METHODS</b>PCR and automatic DNA sequencing were applied to obtain the genotypes of the patients and their parents in three Chinese albinism families. Prenatal gene diagnoses were performed at early pregnancy by chorionic villus sampling (CVS) or by amniocentesis at mid-pregnancy.</p><p><b>RESULTS</b>The three patients were all OCA4, whose genotypes were G349R/c.870delC, G349R/P419L and G349R/D160H, respectively. The three couples had been diagnosed as carriers. In family 1, the first fetus was diagnosed as affected. Termination of pregnancy was opted following genetic counseling. The second fetus (monozygotic twin) was heterozygous only with the paternal G349R mutation. The fetus in family 2 did not get either one of the two mutations. The fetus in family 3 was heterozygous only with the paternal G349R mutation.</p><p><b>CONCLUSION</b>This study detected three reported pathogenic mutations of the membrane associated transporter protein gene (MATP), including G349R, D160H and P419L, and identified a novel pathogenic mutation c.870delC. The prenatal gene diagnosis of OCA4 will be important to prevent the birth of affected child.</p>
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Proteínas de Membrana Transportadoras
/
Diagnóstico Pré-Natal
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Dados de Sequência Molecular
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Química
/
Albinismo Oculocutâneo
/
Sequência de Aminoácidos
/
Análise de Sequência de DNA
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Diagnóstico
/
Genética
/
Mutação
Tipo de estudo:
Estudo diagnóstico
/
Guia de Prática Clínica
Limite:
Criança
/
Criança, pré-escolar
/
Feminino
/
Humanos
/
Masculino
/
Gravidez
Idioma:
Chinês
Revista:
Chinese Journal of Medical Genetics
Ano de publicação:
2011
Tipo de documento:
Artigo
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