15-63127419-A-G

Variant names:

Variant summary

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

The NM_032857.5(LACTB):c.682A>G(p.Lys228Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000337 in 1,600,826 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. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000046 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000032 ( 0 hom. )

Consequence

LACTB
NM_032857.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.64

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:

RPS27L (HGNC:18476): (ribosomal protein S27 like) This gene encodes a protein sharing 96% amino acid similarity with ribosomal protein S27, which suggests the encoded protein may be a component of the 40S ribosomal subunit. [provided by RefSeq, Jul 2008]

RPS27L links:

Genome browser will be placed here

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=0.03358674).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LACTB	NM_032857.5 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 6	ENST00000261893.9	NP_116246.2	P83111-1
LACTB	NM_171846.4 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 5		NP_741982.1	P83111-2
LACTB	NM_001288585.2 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 5		NP_001275514.1	P83111
LACTB	XM_047432128.1 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 6		XP_047288084.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LACTB	ENST00000261893.9 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 6	1	NM_032857.5	ENSP00000261893.4	P83111-1
LACTB	ENST00000413507.3 link	c.682A>G	p.Lys228Glu	missense_variant	Exon 4 of 5	1		ENSP00000392956.2	P83111-2
LACTB	ENST00000557972.1 link	c.205A>G	p.Lys69Glu	missense_variant	Exon 3 of 3	2		ENSP00000454085.1	H0YNN5
RPS27L	ENST00000559763.1 link	n.96-1399T>C		intron_variant	Intron 1 of 1	3

Frequencies

GnomAD3 genomes

AF:

0.0000460

AC:

AN:

152240

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:

0.00134

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:

0.0000753

AC:

AN:

239124

Hom.:

AF XY:

0.0000619

AC XY:

AN XY:

129268

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00102

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:

0.0000324

AC:

AN:

1448586

Hom.:

Cov.:

AF XY:

0.0000305

AC XY:

AN XY:

720132

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00111

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000271

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000460

AC:

AN:

152240

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00134

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000529

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3476

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.682A>G (p.K228E) alteration is located in exon 4 (coding exon 4) of the LACTB gene. This alteration results from a A to G substitution at nucleotide position 682, causing the lysine (K) at amino acid position 228 to be replaced by a glutamic acid (E). 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

0.12

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.40

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.0057

T;.;T

Eigen

Benign

-0.27

Eigen_PC

Benign

-0.023

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.0063

MetaRNN

Benign

0.034

T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

-0.25

N;N;.

PrimateAI

Benign

0.44

PROVEAN

Benign

-0.63

N;N;N

REVEL

Benign

0.095

Sift

Benign

0.040

D;D;T

Sift4G

Benign

0.52

T;T;T

Polyphen

0.15

B;.;.

Vest4

0.37

MutPred

0.45

Loss of MoRF binding (P = 0.001);Loss of MoRF binding (P = 0.001);.;

MVP

0.61

MPC

0.48

ClinPred

0.097

GERP RS

5.9

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.094

gMVP

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