chr2-219076421-G-A

Position:

chr2-219076421-G-A

Variant summary

Our verdict is Likely benign. Variant got -1 ACMG points: 4P and 5B. PM1PM2BP4_StrongBS1_Supporting

The NM_024782.3(NHEJ1):c.860C>T(p.Ser287Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000223 in 1,613,978 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 9/12 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000013 ( 0 hom. )

Consequence

NHEJ1
NM_024782.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 1.76

Variant links:

Genes affected

NHEJ1 (HGNC:25737): (non-homologous end joining factor 1) Double-strand breaks in DNA result from genotoxic stresses and are among the most damaging of DNA lesions. This gene encodes a DNA repair factor essential for the nonhomologous end-joining pathway, which preferentially mediates repair of double-stranded breaks. Mutations in this gene cause different kinds of severe combined immunodeficiency disorders. [provided by RefSeq, Jul 2008]

NHEJ1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -1 ACMG points.

PM1

In a modified_residue Phosphoserine (size 0) in uniprot entity NHEJ1_HUMAN

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_addAF=-0.280613).

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.000112 (17/152104) while in subpopulation AFR AF= 0.000411 (17/41412). AF 95% confidence interval is 0.000261. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 30. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
NHEJ1	NM_024782.3 linkuse as main transcript	c.860C>T	p.Ser287Leu	missense_variant	8/8	ENST00000356853.10	NP_079058.1
NHEJ1	NM_001377499.1 linkuse as main transcript	c.875C>T	p.Ser292Leu	missense_variant	8/8		NP_001364428.1
NHEJ1	NM_001377498.1 linkuse as main transcript	c.860C>T	p.Ser287Leu	missense_variant	8/8		NP_001364427.1
NHEJ1	NR_165304.1 linkuse as main transcript	n.1038C>T		non_coding_transcript_exon_variant	9/9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NHEJ1	ENST00000356853.10 linkuse as main transcript	c.860C>T	p.Ser287Leu	missense_variant	8/8	1	NM_024782.3	ENSP00000349313	P4	Q9H9Q4-1

Frequencies

GnomAD3 genomes

AF:

0.000112

AC:

AN:

152104

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000411

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000160

AC:

AN:

249422

Hom.:

AF XY:

0.0000148

AC XY:

AN XY:

135008

show subpopulations

Gnomad AFR exome

AF:

0.000246

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000130

AC:

AN:

1461874

Hom.:

Cov.:

AF XY:

0.0000124

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.000329

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000132

GnomAD4 genome

AF:

0.000112

AC:

AN:

152104

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74312

show subpopulations

Gnomad4 AFR

AF:

0.000411

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.00000877

Hom.:

Bravo

AF:

0.0000869

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jun 10, 2024

The c.860C>T (p.S287L) alteration is located in exon 8 (coding exon 7) of the NHEJ1 gene. This alteration results from a C to T substitution at nucleotide position 860, causing the serine (S) at amino acid position 287 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Cernunnos-XLF deficiency

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 20, 2022

This sequence change replaces serine, which is neutral and polar, with leucine, which is neutral and non-polar, at codon 287 of the NHEJ1 protein (p.Ser287Leu). This variant is present in population databases (rs760280185, gnomAD 0.02%). This variant has not been reported in the literature in individuals affected with NHEJ1-related conditions. ClinVar contains an entry for this variant (Variation ID: 1008109). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The leucine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.28

BayesDel_noAF

Benign

-0.51

CADD

Benign

DANN

Benign

0.97

Eigen

Benign

-0.46

Eigen_PC

Benign

-0.34

FATHMM_MKL

Benign

0.75

MutationTaster

Benign

1.0

D;N

Vest4

0.23

ClinPred

0.091

GERP RS

2.0

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over