chr4-39459148-A-T

Position:

chr4-39459148-A-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBP6

The ENST00000640888.2(LIAS):c.31A>T(p.Thr11Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,613,456 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another nucleotide change resulting in same amino acid change has been previously reported as Uncertain significancein ClinVar.

Frequency

Genomes: 𝑓 0.00012 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00011 ( 1 hom. )

Consequence

LIAS
ENST00000640888.2 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.332

Variant links:

Genes affected

LIAS (HGNC:16429): (lipoic acid synthetase) The protein encoded by this gene belongs to the biotin and lipoic acid synthetases family. Localized in the mitochondrion, this iron-sulfur enzyme catalyzes the final step in the de novo pathway for the biosynthesis of lipoic acid, a potent antioxidant. The deficient expression of this enzyme has been linked to conditions such as diabetes, atherosclerosis and neonatal-onset epilepsy. Alternative splicing occurs at this locus, and several transcript variants encoding distinct isoforms have been identified. [provided by RefSeq, Aug 2020]

LIAS links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.017606735).

BP6

Variant 4-39459148-A-T is Benign according to our data. Variant chr4-39459148-A-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 206037.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LIAS	NM_006859.4 linkuse as main transcript	c.31A>T	p.Thr11Ser	missense_variant	1/11	ENST00000640888.2	NP_006850.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LIAS	ENST00000640888.2 linkuse as main transcript	c.31A>T	p.Thr11Ser	missense_variant	1/11	1	NM_006859.4	ENSP00000492260	P1	O43766-1

Frequencies

GnomAD3 genomes

AF:

0.000118

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00329

Gnomad AMR

AF:

0.0000654

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:

0.000191

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000100

AC:

AN:

249710

Hom.:

AF XY:

0.000133

AC XY:

AN XY:

135224

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000868

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000142

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000113

AC:

165

AN:

1461280

Hom.:

Cov.:

AF XY:

0.000122

AC XY:

AN XY:

726974

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.000112

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000185

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000126

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

AF:

0.000118

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.0000942

AC XY:

AN XY:

74348

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000191

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000202

Hom.:

Bravo

AF:

0.000174

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000115

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000218

EpiControl

AF:

0.000237

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 24, 2021

The c.31A>T (p.T11S) alteration is located in exon 1 (coding exon 1) of the LIAS gene. This alteration results from a A to T substitution at nucleotide position 31, causing the threonine (T) at amino acid position 11 to be replaced by a serine (S). This alteration was detected in an individual with epilepsy; however, no additional phenotypic information was provided (Darbro, 2016). The p.T11S alteration is predicted to be tolerated by in silico analysis. Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Lipoic acid synthetase deficiency

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 27, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.072

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.40

CADD

Benign

DANN

Benign

0.81

DEOGEN2

Benign

0.24

T;T;T;.;T;.;.;.;.

Eigen

Benign

-0.72

Eigen_PC

Benign

-0.63

FATHMM_MKL

Benign

0.059

LIST_S2

Benign

0.49

T;T;T;T;T;T;T;T;T

M_CAP

Benign

0.022

MetaRNN

Benign

0.018

T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.95

MutationAssessor

Benign

-0.81

N;.;.;N;.;.;N;.;.

MutationTaster

Benign

1.0

N;N;N;N

PrimateAI

Benign

0.46

PROVEAN

Benign

0.24

.;.;.;N;N;N;N;.;.

REVEL

Benign

0.057

Sift

Benign

0.73

.;.;.;T;T;T;T;.;.

Sift4G

Benign

0.70

.;.;.;T;T;T;T;.;.

Polyphen

0.0

B;B;B;.;B;.;.;.;.

Vest4

0.13, 0.17, 0.18, 0.20

MutPred

0.20

Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);Gain of disorder (P = 0.0126);

MVP

0.72

MPC

0.34

ClinPred

0.033

GERP RS

3.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

Varity_R

0.066

gMVP

0.37

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