Ethnic variations of a retinoblastoma susceptibility gene (RB1) polymorphism in eight Asian populations.
J Genet
;
2003 Apr-Aug; 82(1-2): 33-7
Artículo
en Inglés
| IMSEAR
| ID: sea-114450
ABSTRACT
An A --> G single nucleotide polymorphism (SNP) at nucleotide 153,104 in the retinoblastoma susceptibility locus (RB1) at 13q14 was previously reported to be present only in Asians. In this study, we determined the distribution of this SNP in normal Southeast Asian populations (Chinese, Malay, Javanese, Thai, Filipino), in South Asian populations (Bangladeshi, Pakistani Pushtun and Indian) and in Chinese retinoblastoma cases and control subjects. The RB1 SNP was present in all populations at an overall frequency of =/< 0.18. Heterozygosity was higher in the Southeast Asian groups (0.14-0.34) than in the South Asian groups (Bangladeshi and Indian) (0.04-0.06). Significant differences in allele frequencies were found between the two population groups. Interestingly, our Pakistani population comprised of ethnic Pushtuns from northwest Pakistan was significantly different from the neighbouring Bangladeshi and Indian populations. No significant difference was found between Chinese case patients and control subjects. This RB1 SNP appears to be an ethnic variant prevalent in Southeast Asian populations and may be useful for studying RB1 inheritance by pedigree analysis.
Texto completo:
Disponible
Índice:
IMSEAR (Asia Sudoriental)
Asunto principal:
Asia
/
Retinoblastoma
/
Variación Genética
/
Polimorfismo de Longitud del Fragmento de Restricción
/
Humanos
/
Estudios de Casos y Controles
/
Reacción en Cadena de la Polimerasa
/
Proteína de Retinoblastoma
/
Cartilla de ADN
/
Predisposición Genética a la Enfermedad
Tipo de estudio:
Estudio observacional
/
Factores de riesgo
País/Región como asunto:
Asia
Idioma:
Inglés
Revista:
J Genet
Año:
2003
Tipo del documento:
Artículo
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