Table 3.

List of rare SVs impacting genes implicated in NTD pathways

Case IDNTD typeVariantNomenclatureGene(s)Region(s)Size (bp)Variant confirmationInheritanceEvidence (literature/ internal database)Evidence for association with NTDs
18AnencephalyInversionogm[GRCh38]

inv(2)(p11.2p11.2)(87,054,207_86,742,515)
RMND5AGene disruption311,692_Not maternalVogel et al. (2012); Pfirrmann et al. (2015)S
19Encephalocele (Meckel syndrome)Inversionogm[GRCh38]

inv(2)(p11.2p11.2)(87,054,207_86,742,515)
RMND5AGene disruption311,693_Not determinedS
20AnencephalyDuplicationogm[GRCh38]

14q11.2(21,253,761_21,311,033) × 3
HNRNPCExon 1 and 2 (both noncoding)57,272qPCRde novoMIM # 620688;

Liu et al. (2020); Niggl et al. (2023)
S
21Spina bifida (OEIS)Duplicationogm[GRCh38]

14q11.2q11.2(20,990,605_21,390,099) × 3
HNRNPCWhole gene399,494qPCRNot determinedS
22AnencephalyDeletionogm[GRCh38]

3p21.31(48,540,706_48,558,562) × 1
PFKFB4Exon 2 and 3 deletion3260qPCRde novoPegoraro et al. (2015)M
23EncephaloceleDeletionogm[GRCh38]

19p13.2(9,370,139_9,529,559) × 1
ZNF266Whole gene147,320qPCRNot determinedInternal database: Two cases with similar deletion: 1 with MCA; 2 in fetal demiseW
24Spina bifida (OEIS)Deletionogm[GRCh38]

15q25.3(85,036,822_85,102,540) × 1
PDE8AExons 2–1050,956qPCRNot determinedInternal database: same deletion in a case of fetal demiseW
Deletionogm[GRCh38]

18p11.21(10,982,344_11,061,530) × 1
PIEZO2Intron 272,238qPCRNot determined(MIM# 248700, 114300, 108145)W
25AnencephalyDeletionogm[GRCh38]

5p13.2(34,009,171_34,049,829) × 1
C1QTNF3Whole gene30,311qPCRNot determinedMIM# 612045W
26AnencephalyDeletionogm[GRCh38]

5q35.1(173,140,602_173,149,664) × 1
BNIP1Exon 1 and 23853_MIM# 603291W
27AnencephalyDuplicationogm[GRCh38]

Xp22.2(11,017,889_11,437,394) × 3
HCCS, AMELXWhole genes419,505qPCRMaternalHCCS: MIM# 309801, AMELX: MIM# 301200W
28AnencephalyRearrangementogm[GRCh38]

dup(1)(p36.13p36.13)
SDHB, MFAP2Multiple genes378,106_Not determinedMIM# 185470W
29AnencephalyDuplicationogm[GRCh38]

8p21.2(23,701,105_24,412,415) × 2∼3
NKX2-6Whole gene711,311qPCRNot determinedMIM #217095W
30AnencephalyDuplicationogm[GRCh38]

dup(10)(q22.3q22.3)
KCNMA1Exon 1 and 2371,692_Not determinedMIM #618729W
31AnencephalyDuplicationogm[GRCh38]

1q21.1(145,497,462_145,815,386) × 3
_Partial locus-mosaic317,924qPCRNot determinedPartial duplication of 1q21.1 locusW

[i] (S) Strong, (M) moderate, (W) weak, (OEIS) omphalocele-exstrophy-imperforate anus-spinal defects.