Genetic counseling of mosaicism for balanced or unbalanced translocation with a normal cell line at amniocentesis.
Taiwan J Obstet Gynecol
; 63(5): 618-623, 2024 Sep.
Article
em En
| MEDLINE
| ID: mdl-39266140
ABSTRACT
Genetic counseling of mosaicism for balanced translocation with a normal cell line at amniocentesis is not difficult because most of the reported cases have normal phenotypes. However, genetic counseling of mosaicism for unbalanced translocation with a normal cell line at amniocentesis remains difficult because cases with mosaic unbalanced translocation with a normal cell line at prenatal diagnosis have been reported to be associated with either normal or abnormal phenotype. This article makes a comprehensive review of the reported cases of de novo or familial mosaic unbalanced translocation with a normal cell line and various counseling issues such as meiotic event, post-zygotic mitotic event, culture artefact, chimerism, uniparental disomy (UPD), jumping translocation, cytogenetic discrepancy between cultured and uncultured amniocytes and among various tissues, perinatal progressive decrease of the unbalanced translocation cell line and a possible favorable fetal outcome. The information provided is useful for obstetricians and genetic counselors during genetic counseling of the parents who wish to keep the babies under such a circumstance.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Translocação Genética
/
Aconselhamento Genético
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Amniocentese
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Mosaicismo
Limite:
Female
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Humans
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Pregnancy
Idioma:
En
Revista:
Taiwan J Obstet Gynecol
Ano de publicação:
2024
Tipo de documento:
Article