Genetic Variant TMEM248:p.Val197Ile (chr7-66948687-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_017994.5(TMEM248):c.589G>A(p.Val197Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000745 in 1,609,714 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

TMEM248
NM_017994.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.44

Variant links:

Genes affected

TMEM248 (HGNC:25476): (transmembrane protein 248) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM248 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.39996317).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM248	NM_017994.5 link	c.589G>A	p.Val197Ile	missense_variant	Exon 4 of 7	ENST00000341567.8	NP_060464.1	Q9NWD8-1A0A024RDK7
TMEM248	XM_024446819.2 link	c.613G>A	p.Val205Ile	missense_variant	Exon 4 of 7		XP_024302587.1
TMEM248	XM_024446820.2 link	c.589G>A	p.Val197Ile	missense_variant	Exon 4 of 7		XP_024302588.1
TMEM248	XM_024446821.2 link	c.589G>A	p.Val197Ile	missense_variant	Exon 4 of 7		XP_024302589.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TMEM248	ENST00000341567.8 link	c.589G>A	p.Val197Ile	missense_variant	Exon 4 of 7	1	NM_017994.5	ENSP00000340668.4	Q9NWD8-1
TMEM248	ENST00000433271.6 link	n.589G>A		non_coding_transcript_exon_variant	Exon 4 of 6	1		ENSP00000405558.2	Q9NWD8-2
TMEM248	ENST00000484751.1 link	n.348G>A		non_coding_transcript_exon_variant	Exon 2 of 3	2

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152176

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000120

AC:

AN:

250448

Hom.:

AF XY:

0.0000222

AC XY:

AN XY:

135336

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 SAS exome

AF:

0.0000655

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000884

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000686

AC:

AN:

1457538

Hom.:

Cov.:

AF XY:

0.00000690

AC XY:

AN XY:

724114

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000348

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000451

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152176

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74336

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:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000540

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jan 29, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.589G>A (p.V197I) alteration is located in exon 4 (coding exon 3) of the TMEM248 gene. This alteration results from a G to A substitution at nucleotide position 589, causing the valine (V) at amino acid position 197 to be replaced by an isoleucine (I). 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

0.083

BayesDel_addAF

Benign

-0.064

BayesDel_noAF

Benign

-0.15

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.052

Eigen

Uncertain

0.25

Eigen_PC

Uncertain

0.35

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.85

M_CAP

Benign

0.0076

MetaRNN

Benign

0.40

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.3

PrimateAI

Uncertain

0.68

PROVEAN

Benign

-0.77

REVEL

Uncertain

0.31

Sift

Benign

0.35

Sift4G

Benign

0.26

Polyphen

0.97

Vest4

0.65

MutPred

0.38

Loss of catalytic residue at V197 (P = 0.1837);

MVP

0.085

MPC

0.59

ClinPred

0.78

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.11

gMVP

0.41

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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