17-34989496-C-T

Position:

chr17-34989496-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 2P and 10B. PM2BP4_StrongBP6_ModerateBS1

The NM_013975.4(LIG3):c.722C>T(p.Ser241Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000149 in 1,614,050 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00019 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

LIG3
NM_013975.4 missense

Scores

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.57

Variant links:

Genes affected

LIG3 (HGNC:6600): (DNA ligase 3) This gene is a member of the DNA ligase family. Each member of this family encodes a protein that catalyzes the joining of DNA ends but they each have a distinct role in DNA metabolism. The protein encoded by this gene is involved in excision repair and is located in both the mitochondria and nucleus, with translation initiation from the upstream start codon allowing for transport to the mitochondria and translation initiation from a downstream start codon allowing for transport to the nucleus. Additionally, alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

LIG3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.061078012).

BP6

Variant 17-34989496-C-T is Benign according to our data. Variant chr17-34989496-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 987864.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000191 (29/152200) while in subpopulation NFE AF= 0.000338 (23/68022). AF 95% confidence interval is 0.00023. There are 0 homozygotes in gnomad4. There are 12 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
LIG3	NM_013975.4 linkuse as main transcript	c.722C>T	p.Ser241Leu	missense_variant	4/20	ENST00000378526.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
LIG3	ENST00000378526.9 linkuse as main transcript	c.722C>T	p.Ser241Leu	missense_variant	4/20	1	NM_013975.4	P1	P49916-1

Frequencies

GnomAD3 genomes

AF:

0.000191

AC:

AN:

152082

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000725

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:

0.00316

Gnomad NFE

AF:

0.000338

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000219

AC:

AN:

251272

Hom.:

AF XY:

0.000221

AC XY:

AN XY:

135816

show subpopulations

Gnomad AFR exome

AF:

0.0000616

Gnomad AMR exome

AF:

0.000434

Gnomad ASJ exome

AF:

0.0000993

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000299

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000145

AC:

212

AN:

1461850

Hom.:

Cov.:

AF XY:

0.000149

AC XY:

108

AN XY:

727224

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000447

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000812

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000141

Gnomad4 OTH exome

AF:

0.000281

GnomAD4 genome

AF:

0.000191

AC:

AN:

152200

Hom.:

Cov.:

AF XY:

0.000161

AC XY:

AN XY:

74400

show subpopulations

Gnomad4 AFR

AF:

0.0000723

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:

0.000338

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.000176

Hom.:

Bravo

AF:

0.000189

TwinsUK

AF:

0.000809

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000465

AC:

ExAC

AF:

0.000247

AC:

EpiCase

AF:

0.000436

EpiControl

AF:

0.000296

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Nov 02, 2020

Variant summary: LIG3 c.722C>T (p.Ser241Leu) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 0.00022 in 251272 control chromosomes. The observed variant frequency is approximately 65.7- fold the estimated maximal expected allele frequency for a pathogenic variant in LIG3 causing Long QT Syndrome phenotype (3.3e-06), strongly suggesting that the variant is benign. To our knowledge, no occurrence of c.722C>T in individuals affected with Long QT Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014. Based on the evidence outlined above, the variant was classified as likely benign. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.066

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.37

CADD

Benign

DANN

Benign

0.93

DEOGEN2

Benign

0.35

T;T;.;T

Eigen

Benign

-0.74

Eigen_PC

Benign

-0.73

FATHMM_MKL

Benign

0.59

LIST_S2

Benign

0.76

T;T;T;T

M_CAP

Benign

0.074

MetaRNN

Benign

0.061

T;T;T;T

MetaSVM

Benign

-0.84

MutationAssessor

Benign

1.4

L;.;L;.

MutationTaster

Benign

1.0

N;N

PrimateAI

Benign

0.33

PROVEAN

Benign

-1.6

N;.;N;.

REVEL

Benign

0.11

Sift

Benign

0.079

T;.;T;.

Sift4G

Uncertain

0.041

D;D;D;D

Polyphen

0.0030

B;.;.;.

Vest4

0.15

MVP

0.32

MPC

0.24

ClinPred

0.031

GERP RS

4.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.038

gMVP

0.23

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