8-11779911-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_145043.4(NEIL2):c.452A>C(p.Lys151Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000616 in 1,461,864 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K151I) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000062 (0 hom.)
• Consequence: NEIL2 NM_145043.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.09

Genes affected

NEIL2 (HGNC:18956): (nei like DNA glycosylase 2) This gene encodes a member of the Fpg/Nei family of DNA glycosylases. These glycosylases initiate the first step in base excision repair by cleaving oxidatively damaged bases and introducing a DNA strand break via their abasic site lyase activity. This enzyme is primarily associated with DNA repair during transcription and acts prefentially on cytosine-derived lesions, particularly 5-hydroxyuracil and 5-hydroxycytosine. It contains an N-terminal catalytic domain, a hinge region, and a C-terminal DNA-binding domain with helix-two-turn-helix and zinc finger motifs. This enzyme interacts with the X-ray cross complementing factor 1 scaffold protein as part of a multi-protein DNA repair complex. A pseudogene of this gene has been identified. [provided by RefSeq, Mar 2017]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.29264048).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NEIL2	NM_145043.4	c.452A>C	p.Lys151Thr	missense_variant	3/5	ENST00000284503.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NEIL2	ENST00000284503.7	c.452A>C	p.Lys151Thr	missense_variant	3/5	2	NM_145043.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000616 AC: 9 AN: 1461864 Hom.: 0 Cov.: 32 AF XY: 0.00000963 AC XY: 7 AN XY: 727238

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000629

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000312 Hom.: 0

EpiCase AF: 0.0000545

EpiControl AF: 0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 24, 2022

The c.452A>C (p.K151T) alteration is located in exon 3 (coding exon 2) of the NEIL2 gene. This alteration results from a A to C substitution at nucleotide position 452, causing the lysine (K) at amino acid position 151 to be replaced by a threonine (T). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.15
BayesDel_addAF	Benign	-0.14	T
BayesDel_noAF	Benign	-0.44
Cadd	Uncertain	25
Dann	Uncertain	1.0
DEOGEN2	Benign	0.018	T;T;.;T
Eigen	Uncertain	0.48
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Uncertain	0.86	D
M_CAP	Benign	0.013	T
MetaRNN	Benign	0.29	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	2.0	M;M;.;M
MutationTaster	Benign	1.0	D;N;N;N;N
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	-1.8	N;N;N;N
REVEL	Benign	0.099
Sift	Uncertain	0.0080	D;D;D;D
Sift4G	Benign	0.095	T;T;T;T
Polyphen		0.99	D;D;.;D
Vest4		0.40
MutPred		0.44		Gain of phosphorylation at K151 (P = 0.0339);Gain of phosphorylation at K151 (P = 0.0339);.;Gain of phosphorylation at K151 (P = 0.0339);
MVP		0.48
MPC		0.014
ClinPred		0.88	D
GERP RS		4.7
Varity_R		0.14
gMVP		0.50

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs760384701; hg19: chr8-11637420;