Genetic Variant LAPTM4B:p.Gly27Glu (chr8-97775816-G-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_018407.6(LAPTM4B):c.-194G>A variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

LAPTM4B
NM_018407.6 5_prime_UTR

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.145

Publications

0 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: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.17526147).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
LAPTM4B	NM_018407.6 link	c.-194G>A		5_prime_UTR_variant	Exon 1 of 7	ENST00000521545.7	NP_060877.4	Q86VI4-2
LOC124901986	XR_007061020.1 link	n.-41C>T		upstream_gene_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
LAPTM4B	ENST00000445593.6 link	c.80G>A	p.Gly27Glu	missense_variant	Exon 1 of 7	1		ENSP00000402301.2	Q86VI4-3
LAPTM4B	ENST00000619747.1 link	c.80G>A	p.Gly27Glu	missense_variant	Exon 1 of 7	1		ENSP00000482533.1	Q86VI4-3
LAPTM4B	ENST00000521545.7 link	c.-194G>A		5_prime_UTR_variant	Exon 1 of 7	1	NM_018407.6	ENSP00000428409.1	Q86VI4-2
LAPTM4B	ENST00000517924.5 link	c.-194G>A		upstream_gene_variant		5		ENSP00000429868.2	H0YBN1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1413118

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

700532

African (AFR)

AF:

0.00

AC:

AN:

32620

American (AMR)

AF:

0.00

AC:

AN:

39582

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25396

East Asian (EAS)

AF:

0.00

AC:

AN:

37562

South Asian (SAS)

AF:

0.00

AC:

AN:

82316

European-Finnish (FIN)

AF:

0.00

AC:

AN:

37994

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4494

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1094306

Other (OTH)

AF:

0.00

AC:

AN:

58848

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

May 07, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.80G>A (p.G27E) alteration is located in exon 1 (coding exon 1) of the LAPTM4B gene. This alteration results from a G to A substitution at nucleotide position 80, causing the glycine (G) at amino acid position 27 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

0.10

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.66

CADD

Benign

6.9

(source)

DANN

Benign

0.92

Eigen

Benign

-1.2

Eigen_PC

Benign

-1.3

FATHMM_MKL

Benign

0.056

LIST_S2

Benign

0.35

T;.

M_CAP

Pathogenic

0.60

MetaRNN

Benign

0.18

T;T

MetaSVM

Benign

-0.98

PhyloP100

0.14

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-1.2

.;N

REVEL

Benign

0.11

Sift

Benign

0.080

.;T

Sift4G

Uncertain

0.043

D;D

Vest4

0.090

MVP

0.17

MPC

0.48

ClinPred

0.30

GERP RS

-5.9

PromoterAI

-0.27

Neutral

(source)

Varity_R

0.084

gMVP

0.029

Mutation Taster

=98/2

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over