Discrepancy between non-invasive prenatal testing result and fetal karyotype caused by rare confined placental mosaicism: A case report

Table 1 Results of copy-number variation sequencing

Sample type	Sample	Result of CNV-seq
Amniotic fluid	Amniotic fluid cells	47,XXY
Fetal tissue	Fetal muscle tissue	47,XXY
Umbilical cord	Middle segment of umbilical cord	47,XXY
Placenta	Center of fetal face	47,XY,+21[65%]/46,XY[35%]
	Margin of fetal face	47,XY,+21[65%]/46,XY[35%]
	Margin of maternal face	47,XY,+21[65%]/46,XY[35%]
	Center of maternal face	47,XY,+21[60%]/47,XXY[20%]/46,XY[20%]
	Placental center	47,XY,+21[65%]/47,XXY[10%]/46,XY[25%]

CNV-seq: Copy-number variation sequencing.