RT Journal Article SR Electronic T1 Incidental identification of maternal malignancies in two Asian women underwent noninvasive prenatal test JF bioRxiv FD Cold Spring Harbor Laboratory SP 095364 DO 10.1101/095364 A1 Xing Ji A1 Fang Chen A1 Yafeng Zhou A1 Jia Li A1 Yuying Yuan A1 Yu Mo A1 Qiang Liu A1 Jen-Yu Tseng A1 Diego Shih-Chieh Lin A1 Shu-Huei Shen A1 Yu Liu A1 Weiping Ye A1 Hongyun Zhang A1 Na Liu A1 Li Shen A1 Xin Jin A1 Pi-Lin Sung A1 Mao Mao YR 2016 UL http://biorxiv.org/content/early/2016/12/19/095364.abstract AB 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.