Variant 15-63122100-T-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032857.5(LACTB):c.229T>A(p.Ser77Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000415 in 1,471,136 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

LACTB
NM_032857.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.04

Variant links:

Genes affected

LACTB (HGNC:16468): (lactamase beta) This gene encodes a mitochondrially-localized protein that has sequence similarity to prokaryotic beta-lactamases. Many of the residues responsible for beta-lactamase activity are not conserved in this protein, suggesting it may have a different enzymatic function. Increased expression of the related mouse gene was found to be associated with obesity. Alternative splicing results in multiple transcript variants encoding different protein isoforms. [provided by RefSeq, Dec 2013]

LACTB links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.038860947).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
LACTB	NM_032857.5 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/6	ENST00000261893.9	NP_116246.2	P83111-1
LACTB	NM_171846.4 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/5		NP_741982.1	P83111-2
LACTB	NM_001288585.2 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/5		NP_001275514.1	P83111
LACTB	XM_047432128.1 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/6		XP_047288084.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
LACTB	ENST00000261893.9 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/6	1	NM_032857.5	ENSP00000261893.4		P83111-1
LACTB	ENST00000413507.3 linkuse as main transcript	c.229T>A	p.Ser77Thr	missense_variant	1/5	1		ENSP00000392956.2		P83111-2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152028

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.0000943

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000439

AC:

AN:

68372

Hom.:

AF XY:

0.0000506

AC XY:

AN XY:

39520

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.000198

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000527

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000432

AC:

AN:

1319108

Hom.:

Cov.:

AF XY:

0.0000477

AC XY:

AN XY:

649288

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000448

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000310

Gnomad4 NFE exome

AF:

0.0000399

Gnomad4 OTH exome

AF:

0.0000731

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152028

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74268

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000943

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000142

Hom.:

Bravo

AF:

0.0000264

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Aug 04, 2024

The c.229T>A (p.S77T) alteration is located in exon 1 (coding exon 1) of the LACTB gene. This alteration results from a T to A substitution at nucleotide position 229, causing the serine (S) at amino acid position 77 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

0.073

BayesDel_addAF

Benign

-0.33

BayesDel_noAF

Benign

-0.71

CADD

Benign

5.5

DANN

Benign

0.76

DEOGEN2

Benign

0.0098

T;.

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.0085

LIST_S2

Benign

0.38

T;T

M_CAP

Uncertain

0.094

MetaRNN

Benign

0.039

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

N;N

PrimateAI

Uncertain

0.79

PROVEAN

Benign

-0.41

N;N

REVEL

Benign

0.010

Sift

Benign

0.54

T;T

Sift4G

Benign

0.061

T;T

Polyphen

0.0050

B;.

Vest4

0.076

MutPred

0.24

Loss of glycosylation at P78 (P = 0.2299);Loss of glycosylation at P78 (P = 0.2299);

MVP

0.21

MPC

0.31

ClinPred

0.018

GERP RS

0.078

Varity_R

0.10

gMVP

0.25

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