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Incidental identification of maternal malignancies in two Asian women underwent noninvasive prenatal test

By Xing Ji, Fang Chen, Yafeng Zhou, Jia Li, Yuying Yuan, Yu Mo, Qiang Liu, Jen-Yu Tseng, Diego Shih-Chieh Lin, Shu-Huei Shen, Yu Liu, Weiping Ye, Hongyun Zhang, Na Liu, Li Shen, Xin Jin, Pi-Lin Sung, Mao Mao

Posted 19 Dec 2016
bioRxiv DOI: 10.1101/095364

Noninvasive prenatal test (NIPT) has been widely used as a screening test for trisomy 13, 18 and 21 worldwide. Recently, coexistence of maternal malignancy and pregnancy has drawn increasing attention in NIPT studies. Malignancy in pregnant women potentially affected NIPT results, which may cause false positive results or failed tests. However, no such case has ever been reported in Asian population. In this study, for the first time, we reported a stage III dysgerminoma and advanced gastric cancer during pregnancy accidentally identified during NIPT tests. These two women showed aberrant chromosome aneuploidies in NIPT results and concordant pattern of genome disruption found in tumor samples. The findings in this study further validate the effect of maternal malignancy on NIPT results and strengthen the possibility of detecting malignant tumors through NIPT in the future.

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