The value of combined use of chromosomal karyotyping and chromosome microarray analysis for prenatal diagnosis / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 392-396, 2020.
Article
in Chinese
| WPRIM
| ID: wpr-828317
ABSTRACT
OBJECTIVE@#To assess the value of combined chromosomal karyotyping and chromosomal microarray analysis (CMA) for prenatal diagnosis.@*METHODS@#G-banding karyotyping and CMA were simultaneously performed on 546 women who were subjected to amniocentesis during middle pregnancy.@*RESULTS@#In total 82 cases were detected with chromosomal abnormalities. The two methods were consistent in 43 cases, which included 14 trisomy 21, 6 trisomy 18, 1 trisomy 13, 14 sex chromosomal aneuploidies, 4 chromosomal deletions, 3 chromosomal duplications and 1 sex chromosomal mosaicism. Fifteen fetuses with chromosomal abnormalities detected by CMA were missed by karyotyping analysis, which included 9 microdeletions and 6 microduplications. Sixteen fetuses with chromosomal abnormalities detected by karyotyping analysis were missed by CMA, which included 15 chromosomal translocations and 1 sex chromosomal mosaicism. In 7 cases, the results of karyotyping analysis and CMA were inconsistent. One supernumerary marker chromosome detected by karyotyping analysis was verified by CMA as 9p13.1p21.1 duplication.@*CONCLUSION@#Combined chromosomal karyotyping and CMA can significantly improve the detection rate for chromosomal abnormalities, which has a great value for prenatal diagnosis.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Prenatal Diagnosis
/
Chromosome Aberrations
/
Chromosome Disorders
/
Microarray Analysis
/
Diagnosis
/
Genetics
/
Karyotyping
Type of study:
Diagnostic study
Limits:
Female
/
Humans
/
Pregnancy
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2020
Type:
Article
Similar
MEDLINE
...
LILACS
LIS