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Table 4 Discordant chromosomal results in fetuses with RAAs

From: Phenotypic findings and pregnancy outcomes of fetal rare autosomal aneuploidies detected using chromosomal microarray analysis

Case

MA

GA

Clinical manifestation

NIPS result

CMA result

Karyotyping/FISH result

Outcome

5

32

14

Adverse pregnancy history

–

CVS: arr(2) × 3[0.23] AF: Normal (CMA)

AF: Normal (Karyotyping)

Normal, Liveborn

14

40

12

AMA; adverse pregnancy history

–

AF: arr(5) × 3[0.6]

CVS: Normal (Karyotyping) AF: Normal (Karyotyping)

Normal, Liveborn

15

32

13

High risk of MSS

–

CVS: arr(7) × 3[0.15] AF: Normal (CMA)

CVS: Normal (Karyotyping) AF: Normal (Karyotyping)

Premature delivery

19

38

19

AMA

Increased chr7

AF: arr(7) × 3[0.1]

AF: Normal (Karyotyping)

TOP

47

28

21

AMA; adverse pregnancy history

–

AF: arr(15) × 3[0.44]

AF: Normal (Karyotyping)

TOP

48

34

20

–

Increased chr15

AF: arr(15) × 3[0.1]

AF: Normal (Karyotyping)

TOP

56

29

19

High risk of MSS;

Increased chr16

AF: arr(16) × 3[0.1]

AF: Normal (Karyotyping)

TOP

65

36

12

AMA; adverse pregnancy history; parental thalassemia

–

CVS:arr(16) × 3[0.15] AF: Normal (CMA)

AF: Normal (Karyotyping) AF: Normal (FISH)

Normal, Liveborn

76

37

16

IUGR

Increased chr22

AF: arr(22) × 3[0.1]

AF: Normal (Karyotyping)

TOP

77

25

16

AMA; high risk of MSS

Increased chr22

AF: arr(22) × 3[0.25]

AF: Normal (Karyotyping)

Normal, Liveborn

82

31

14

Thicken NT

–

CVS: arr(22) × 3[0.4] AF: arr[GRCh37] 21q21.1q21.3(19314275_27775306)x1dn

AF: 45,XN,psu dic(22;21) (p12;q22)del(21)(q21q21)dn

Normal, Liveborn

  1. chr chromosome, MA maternal age (years old), GA gestational age (weeks), CVS chorionic villus sampling, AF amniotic fluid, CMA chromosomal microarray analysis, FISH fluorescence in situ hybridization, AMA advanced maternal age, MSS maternal serum screening, NT nuchal translucency, SUA single umbilical artery, IUGR intrauterine growth retardation, TOP termination of pregnancy, dn de novo