scholarly journals Single‐nucleotide polymorphism‐based chromosomal microarray analysis provides clues and insights into disease mechanisms

2019 ◽  
Vol 54 (5) ◽  
pp. 655-660
Author(s):  
H. Daum ◽  
V. Meiner ◽  
N. Hacohen ◽  
N. Zvi ◽  
A. Eilat ◽  
...  
2016 ◽  
Vol 6 (3) ◽  
Author(s):  
Akiko Takashima ◽  
Naoki Takeshita ◽  
Toshihiko Kinoshita

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.


2016 ◽  
Vol 14 (1) ◽  
pp. 137-144 ◽  
Author(s):  
YINGJUN XIE ◽  
XIAOJUAN PEI ◽  
YU DONG ◽  
HUIQUN WU ◽  
JIANZHU WU ◽  
...  

2020 ◽  
Author(s):  
Xiaorui Xie ◽  
Xiaoqing Wu ◽  
Linjuan Su ◽  
Meiying Cai ◽  
Ying Li ◽  
...  

Abstract Objective: To explore the significance and value of fetal nasal bone anomaly (absence or hypoplasia) as indications of prenatal diagnosis.Methods: A total of 102 fetuses diagnosed with nasal bone absence or hypoplasia by ultrasonography underwent chorionic, amniotic, or umbilical cord blood puncture. Single nucleotide polymorphism microarray (SNP-array) was used to analyze fetal chromosomes.Results: Of the 102 fetuses with nasal bone absence or hypoplasia, 25 (24.5%) had chromosomal abnormalities, including 15 cases of trisomy 21, one trisomy 18 case, and 9 cases of other copy number variations. Among the 52 cases with isolated nasal bone absence or hypoplasia, 7(13.5%) had chromosomal abnormalities. In 50 cases, abnormal nasal bone with additional soft markers or structural abnormalities was observed, while 18 cases (36.0%) had chromosomal abnormalities, which were significantly higher than that among the fetuses with isolated nasal bone abnormality.Conclusion: Fetal nasal bone absence or hypoplasia can be used as an indication for prenatal diagnosis. The detection rate of chromosomal abnormalities increases with additional soft markers or structural abnormalities. This study demonstrates that fetal nasal bone absence or hypoplasia is associated with micro-deletions or micro-duplications of chromosomes. Application of single nucleotide polymorphism microarray (SNP-array) technology can reduce the rate of missed prenatal diagnoses.


Neoplasia ◽  
2012 ◽  
Vol 14 (3) ◽  
pp. 206-IN13 ◽  
Author(s):  
Cristina L. Ronchi ◽  
Ellen Leich ◽  
Silviu Sbiera ◽  
Dirk Weismann ◽  
Andreas Rosenwald ◽  
...  

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