A palindrome-mediated recurrent translocation with 3:1 meiotic nondisjunction: the t(8;22)(q24.13;q11.21).
Am J Hum Genet
; 87(2): 209-18, 2010 Aug 13.
Article
em En
| MEDLINE
| ID: mdl-20673865
ABSTRACT
Palindrome-mediated genomic instability has been associated with chromosomal translocations, including the recurrent t(11;22)(q23;q11). We report a syndrome characterized by extremity anomalies, mild dysmorphia, and intellectual impairment caused by 31 meiotic segregation of a previously unrecognized recurrent palindrome-mediated rearrangement, the t(8;22)(q24.13;q11.21). There are at least ten prior reports of this translocation, and nearly identical PATRR8 and PATRR22 breakpoints were validated in several of these published cases. PCR analysis of sperm DNA from healthy males indicates that the t(8;22) arises de novo during gametogenesis in some, but not all, individuals. Furthermore, demonstration that de novo PATRR8-to-PATRR11 translocations occur in sperm suggests that palindrome-mediated translocation is a universal mechanism producing chromosomal rearrangements.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Translocação Genética
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Cromossomos Humanos Par 8
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Cromossomos Humanos Par 22
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Não Disjunção Genética
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Sequências Repetidas Invertidas
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Meiose
Limite:
Adolescent
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Adult
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Child
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Child, preschool
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Female
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Humans
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Male
Idioma:
En
Revista:
Am J Hum Genet
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos