Genetic Counseling for a Prenatal Diagnosis of Structural Chromosomal Abnormality with High-Resolution Analysis Using a Single Nucleotide Polymorphism Microarray
Author(s) -
Akiko Takashima,
Naoki Takeshita,
Toshihiko Kinoshita
Publication year - 2016
Publication title -
clinics and practice
Language(s) - English
Resource type - Journals
ISSN - 2039-7283
DOI - 10.4081/cp.2016.852
Subject(s) - amniocentesis , prenatal diagnosis , genetic counseling , karyotype , chromosomal translocation , genetics , medicine , microarray , chromosomal abnormality , abnormality , microarray analysis techniques , fetus , bioinformatics , chromosome , biology , pregnancy , gene , gene expression , psychiatry
A 41-year old pregnant woman underwent amniocentesis to conduct a conventional karyotyping analysis; the analysis reported an abnormal karyotype: 46,XY,add(9)(p24). Chromosomal microarray analysis (CMA) is utilized in prenatal diagnoses. A single nucleotide polymorphism microarray revealed a male fetus with balanced chromosomal translocations on 9p and balanced chromosomal rearrangements, but another chromosomal abnormality was detected. The fetus had microduplication. The child was born as a phenotypically normal male. CMA is a simple and informative procedure for prenatal genetic diagnosis. CMA is the detection of chromosomal variants of unknown clinical significance; therefore, genetic counseling is important during prenatal genetic testing
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