13-108208329-T-C

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_206937.2(LIG4):c.*204A>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0117 in 510,586 control chromosomes in the GnomAD database, including 307 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.030 ( 240 hom., cov: 32)

Exomes 𝑓: 0.0038 ( 67 hom. )

Consequence

LIG4
NM_206937.2 3_prime_UTR

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:3

Conservation

PhyloP100: 0.278

Variant links:

Genes affected

LIG4 (HGNC:6601): (DNA ligase 4) The protein encoded by this gene is a DNA ligase that joins single-strand breaks in a double-stranded polydeoxynucleotide in an ATP-dependent reaction. This protein is essential for V(D)J recombination and DNA double-strand break (DSB) repair through nonhomologous end joining (NHEJ). This protein forms a complex with the X-ray repair cross complementing protein 4 (XRCC4), and further interacts with the DNA-dependent protein kinase (DNA-PK). Both XRCC4 and DNA-PK are known to be required for NHEJ. The crystal structure of the complex formed by this protein and XRCC4 has been resolved. Defects in this gene are the cause of LIG4 syndrome. Alternatively spliced transcript variants encoding the same protein have been observed. [provided by RefSeq, Jul 2008]

LIG4 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 13-108208329-T-C is Benign according to our data. Variant chr13-108208329-T-C is described in ClinVar as [Benign]. Clinvar id is 310964.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BA1

GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.102 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LIG4	NM_206937.2 linkuse as main transcript	c.*204A>G		3_prime_UTR_variant	3/3	ENST00000442234.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LIG4	ENST00000442234.6 linkuse as main transcript	c.*204A>G		3_prime_UTR_variant	3/3	1	NM_206937.2	P1

Frequencies

GnomAD3 genomes

AF:

0.0300

AC:

4567

AN:

152174

Hom.:

237

Cov.:

show subpopulations

Gnomad AFR

AF:

0.105

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0113

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.0128

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.0220

GnomAD4 exome

AF:

0.00383

AC:

1374

AN:

358294

Hom.:

Cov.:

AF XY:

0.00308

AC XY:

589

AN XY:

191016

show subpopulations

Gnomad4 AFR exome

AF:

0.102

Gnomad4 AMR exome

AF:

0.00672

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000770

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000172

Gnomad4 OTH exome

AF:

0.00743

GnomAD4 genome

AF:

0.0302

AC:

4602

AN:

152292

Hom.:

240

Cov.:

AF XY:

0.0298

AC XY:

2220

AN XY:

74480

show subpopulations

Gnomad4 AFR

AF:

0.105

Gnomad4 AMR

AF:

0.0112

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.0217

Alfa

AF:

0.0223

Hom.:

Bravo

AF:

0.0342

Asia WGS

AF:

0.00898

AC:

AN:

3466

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

DNA ligase IV deficiency

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jul 07, 2018

- -

Severe combined immunodeficiency due to DCLRE1C deficiency

Benign:1

Benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

Cadd

Benign

1.2

Dann

Benign

0.47

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

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