Genetic Screening for Chromosomal Abnormalities and Y Chromosome Microdeletions in 846 Infertile Korean Men
Laboratory Medicine Online
;
: 148-155, 2018.
Article
Dans Anglais
| WPRIM
| ID: wpr-717396
ABSTRACT
BACKGROUND:
Chromosomal abnormalities are confirmed as one of the frequent causes of male infertility. The microdeletion of the azoospermia factor (AZF) region in the Y chromosome was discovered as another frequent genetic cause associated with male infertility. The aim of this study was to evaluate the frequency and type of chromosomal abnormalities and Y chromosome microdeletions in Korean infertile men.METHODS:
A total of 846 infertile men with azoospermia and severe oligozoospermia were included for genetic screening. Cytogenetic analyses using G-banding and screening for Y chromosome microdeletions by multiplex PCR for AZF genes were performed.RESULTS:
Chromosomal abnormalities were detected in 112 infertile men (13.2%). Of these, Klinefelter's syndrome was the most common (55.4%, 62/112), followed by balanced translocation including translocation between sex chromosome and autosome (14.3%), Yq deletion (13.4%), X/XY mosaicism with Yq deletion (12.5%), and XX male (4.5%). The overall prevalence of Y chromosome microdeletions was 9.2% (78/846). Most microdeletions were in the AZFc region (51.3%) with a low incidence in AZFa (7.7 %) and AZFb (6.4 %). Combined deletions involving the AZFbc and AZFabc regions were detected in 26.9 % and 7.7 % of men, respectively. Among the infertile men with Y chromosome microdeletions, the incidence of chromosomal abnormality was 25.6% (20/78).CONCLUSIONS:
There was a high incidence (20.1%) of chromosomal abnormalities and Y chromosome microdeletions in Korean infertile men. These findings strongly suggest that genetic screening for chromosomal abnormalities and Y chromosome microdeletions should be performed, and genetic counseling should be provided before starting assisted reproductive techniques.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Oligospermie
/
Chromosomes sexuels
/
Chromosome Y
/
Dépistage génétique
/
Dépistage de masse
/
Incidence
/
Prévalence
/
Aberrations des chromosomes
/
Analyse cytogénétique
/
Techniques de reproduction assistée
Type d'étude:
Etude diagnostique
/
Etude d'incidence
/
Étude de prévalence
/
Étude pronostique
/
Étude de dépistage
Limites du sujet:
Humains
/
Mâle
langue:
Anglais
Texte intégral:
Laboratory Medicine Online
Année:
2018
Type:
Article
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