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Yang J, Hou Y, Guo F, Peng H, Wang D, Li Y, Oy H, Wang Y, Lu J, Yin A. Noninvasive prenatal detection of fetal sex chromosome abnormalities using the semiconductor sequencing platform (SSP) in Southern China. J Assist Reprod Genet 2021; 38:727-734. [PMID: 33564935 PMCID: PMC7910337 DOI: 10.1007/s10815-020-02056-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Accepted: 12/28/2020] [Indexed: 11/25/2022] Open
Abstract
Background Noninvasive prenatal testing (NIPT) has been widely used to screen for fetal aneuploidies, including fetal sex chromosome aneuploidies (SCAs). However, there is less information on the performance of NIPT in detecting SCAs. Methods A cohort of 47,800 pregnancies was recruited to review the high-risk NIPT results for SCAs. Cell-free fetal DNA (cffDNA) was extracted and sequenced. All NIPT high-risk cases were recommended to undergo invasive prenatal diagnosis for karyotyping analysis and chromosome microarray analysis (CMA). Results A total of 238 high-risk cases were detected by NIPT, including 137 cases of 45,X, 27 cases of 47,XXX, and 74 cases of 47,XYY/47,XXY. Prenatal diagnosis, including karyotyping analysis and CMA, was available in 170 cases. The positive predictive value (PPV) was 30.00% for 45,X, 70.58% for 47,XXX, and 81.13% for 47,XYY/47,XXY. In addition, 13 cases of sex chromosome mosaicism and 9 cases of sex chromosome CNVs were incidentally found in this study. Conclusion Our study showed that NIPT was reliable for screening SCAs based on a large sample, and it performed better in predicting sex chromosome trisomies than monosomy X. Our study will provide an important reference for clinical genetic counseling and further processing of the results.
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Affiliation(s)
- Jiexia Yang
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Yaping Hou
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Fangfang Guo
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Haishan Peng
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Dongmei Wang
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Yi Li
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Haoxin Oy
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Yixia Wang
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Jian Lu
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China.,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China
| | - Aihua Yin
- Department of Medical Genetics Center, Guangdong Women and Children Hospital, Guangzhou, China. .,Department of Prenatal Diagnosis Center, Guangdong Women and Children Hospital, No. 521 Xingnan Road, Panyu District, Guangzhou, 511400, China.
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