Genetic Variant ENST00000445593.6:c.190C>A (chr8-97775926-C-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000445593.6(LAPTM4B):c.190C>A(p.Gln64Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000574 in 1,045,302 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Q64E) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000057 ( 0 hom. )

Consequence

LAPTM4B
ENST00000445593.6 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.00

Publications

2 publications found

Variant links:

Genes affected

LAPTM4B (HGNC:13646): (lysosomal protein transmembrane 4 beta) Enables ceramide binding activity; enzyme binding activity; and phosphatidylinositol bisphosphate binding activity. Involved in several processes, including negative regulation of macromolecule metabolic process; regulation of lysosomal membrane permeability; and regulation of lysosome organization. Located in several cellular components, including endosome; lysosomal membrane; and plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

LAPTM4B links:

LOC124901986 (HGNC:):

LOC124901986 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.053094774).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LAPTM4B	NM_018407.6 link	c.-84C>A		5_prime_UTR_variant	Exon 1 of 7	ENST00000521545.7	NP_060877.4	Q86VI4-2
LOC124901986	XR_007061020.1 link	n.-151G>T		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LAPTM4B	ENST00000445593.6 link	c.190C>A	p.Gln64Lys	missense_variant	Exon 1 of 7	1		ENSP00000402301.2	Q86VI4-3
LAPTM4B	ENST00000619747.1 link	c.190C>A	p.Gln64Lys	missense_variant	Exon 1 of 7	1		ENSP00000482533.1	Q86VI4-3
LAPTM4B	ENST00000521545.7 link	c.-84C>A		5_prime_UTR_variant	Exon 1 of 7	1	NM_018407.6	ENSP00000428409.1	Q86VI4-2
LAPTM4B	ENST00000517924.5 link	c.-84C>A		5_prime_UTR_variant	Exon 1 of 5	5		ENSP00000429868.2	H0YBN1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000184

AC:

AN:

54450

AF XY:

0.0000314

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000574

AC:

AN:

1045302

Hom.:

Cov.:

AF XY:

0.00000775

AC XY:

AN XY:

516308

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

24314

American (AMR)

AF:

0.00

AC:

AN:

18876

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

15560

East Asian (EAS)

AF:

0.00

AC:

AN:

28810

South Asian (SAS)

AF:

0.0000179

AC:

AN:

55744

European-Finnish (FIN)

AF:

0.0000298

AC:

AN:

33596

Middle Eastern (MID)

AF:

0.00

AC:

AN:

3056

European-Non Finnish (NFE)

AF:

0.00000487

AC:

AN:

821198

Other (OTH)

AF:

0.00

AC:

AN:

44148

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.0000101

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.59

CADD

Benign

(source)

DANN

Benign

0.79

Eigen

Benign

-1.0

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.13

LIST_S2

Benign

0.29

T;.

M_CAP

Uncertain

0.25

MetaRNN

Benign

0.053

T;T

MetaSVM

Benign

-1.0

PhyloP100

0.0

PrimateAI

Uncertain

0.75

PROVEAN

Benign

-0.29

.;N

REVEL

Benign

0.040

Sift

Benign

1.0

.;T

Sift4G

Benign

1.0

T;T

Vest4

0.056

MVP

0.24

MPC

0.55

ClinPred

0.070

GERP RS

3.2

PromoterAI

0.63

Over-expression

(source)

Varity_R

0.096

gMVP

0.16

Mutation Taster

=95/5

polymorphism

(source)

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

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ENST00000445593.6:c.190C>A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over