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Table 3 CNVs of unknown clinical relevance (due to unknown parental inheritance)

From: Best diagnostic approach for the genetic evaluation of fetuses after intrauterine death in first, second or third trimester: QF-PCR, karyotyping and/or genome wide SNP array analysis

Case id

Pregnancy trimester

Clinical features

Array platform

Size (kb)

Chrom region

Start-end Mb position (Hg19)

C CNV

Ref Seq (and/or disease-causing OMIM) genes involved (UCSC feb 2009)

2

second

Suspect twin to twin transfusion syndrome (TTTS), clenched fist both hands, monozygotic twin

250 k

663

4q34.1

173762947-174426181

loss

GALNTL6, GALNT7, HMGB2, SAP30, SCRG1

7

second

IUGR

250 k

447

3q21.2

125498921-125945498

gain

MIR548I1, FAM86JP, ALG1L, ROPN1B, SLC411A3, ALDH1L1, ALDH1L1-AS1 and AS2

12

second

MCA

250 k

587

2p12

77036873-77624262

loss

LRRTM4

14

second

Unknown, recurrent IUFD

250 k

1,200

6q16.1

95641761-96851236

gain

MANEA, FUT9, MANEA-AS1

16

second

Hygroma colli

250 k

1,400

1q21.1

143570846-144929606

loss

>10 RefSeq genes*, mutation analysis for Noonan genes: NRAS, SHOC2, GBL, RAF1, SOS1, KRAS, PTPN11 negative

21

third

Hydrocephaly

CytoScan® HD

383

16p13.3

3945203-4328143

loss

ADCY9, SRL, LOC100507501,TFAP4 (proximal to OMIM gene CREBBP)

30

second

Potter’s sequence, renal agenesis, facial dysmorfisms, single palmar crease

250 k

1,005

1p32.3

53484565-54489583

gain

>10 RefSeq genes* and 3 disease-causing OMIM genes: SCP2, CPT2, LRP8

34

unknown

unknown

CytoScan® HD

830

3p24.1

26641410-27471832

gain

LRRC3B, NEK10, SLC4A7

39

second

None

CytoScan® HD

828

Xq28

148839499-149667835

gain

MAGEA9B, MAGEA9, MAGEA8-AS1, MAGEA8, CXorf40B, LINC00894, MIR2114 and 1 disease-causing OMIM gene: MAMLD1

47

second

None

CytoScan® HD

358

18q21.2

52900743-53258705

gain

MIR4529 and disease-causing OMIM gene TCF4. Duplication TCF4 confirmed by MLPA.

50

third

None

CytoScan® HD

545

8p21.3p22

18825888-19370744

loss

FSD3, LOC100128993, SH2D4A, CSGALNACT1

20

third

None

CytoScan® HD

490

3q29

196592132-197081797

gain

SENP5, NCBP2, NCBP2-AS2, PIG2, MFI2, MFI2-AS1, DLG1, DLG1-AS1, MIR4797

55

second

None

CytoScan® HD

611

16p11.2

29567296-30177917

loss

>10 RefSeq genes* and 3 disease-causing OMIM genes: KIF22, PRRT2, ALDOA

56

second

Unknown

CytoScan® HD

767

22q11.21

21033398-21800798

loss

>10 RefSeq genes* and 2 disease-causing OMIM genes: HCF2, SNPA29

59

third

None

CytoScan® HD

266

8p23.3

158049-423802

loss

RPL23AP53, ZNT596, FAM87A, FBX025

  1. *Number of Ref Seq genes > 10 → genes not specified.