1-61694768-A-C

Variant names:

Variant summary

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

The NM_032027.3(TM2D1):c.442T>G(p.Leu148Val) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000239 in 1,592,928 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000020 ( 1 hom. )

Consequence

TM2D1
NM_032027.3 missense, splice_region

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.01

Variant links:

Genes affected

TM2D1 (HGNC:24142): (TM2 domain containing 1) The protein encoded by this gene is a beta-amyloid peptide-binding protein. It contains a structural module related to that of the seven transmembrane domain G protein-coupled receptor superfamily and known to be important in heterotrimeric G protein activation. Beta-amyloid peptide has been established to be a causative factor in neuron death and the consequent diminution of cognitive abilities observed in Alzheimer's disease. This protein may be a target of neurotoxic beta-amyloid peptide, and may mediate cellular vulnerability to beta-amyloid peptide toxicity through a G protein-regulated program of cell death. Several transcript variants have been found for this gene. [provided by RefSeq, Feb 2016]

TM2D1 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=0.2908907).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TM2D1	NM_032027.3 link	c.442T>G	p.Leu148Val	missense_variant, splice_region_variant	Exon 5 of 7	ENST00000606498.5	NP_114416.1	Q9BX74

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TM2D1	ENST00000606498.5 link	c.442T>G	p.Leu148Val	missense_variant, splice_region_variant	Exon 5 of 7	5	NM_032027.3	ENSP00000475700.1		Q9BX74
TM2D1	ENST00000371180.7 link	c.442T>G	p.Leu148Val	missense_variant, splice_region_variant	Exon 5 of 7	5		ENSP00000360222.2		J3KPA2

Frequencies

GnomAD3 genomes

AF:

0.0000592

AC:

AN:

152122

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

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:

0.00

Gnomad OTH

AF:

0.000479

GnomAD3 exomes

AF:

0.0000438

AC:

AN:

228316

Hom.:

AF XY:

0.0000566

AC XY:

AN XY:

123770

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000236

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000391

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000943

Gnomad OTH exome

AF:

0.000182

GnomAD4 exome

AF:

0.0000201

AC:

AN:

1440806

Hom.:

Cov.:

AF XY:

0.0000154

AC XY:

AN XY:

715926

show subpopulations

Gnomad4 AFR exome

AF:

0.0000307

Gnomad4 AMR exome

AF:

0.000268

Gnomad4 ASJ exome

AF:

0.0000785

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000247

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000272

Gnomad4 OTH exome

AF:

0.000118

GnomAD4 genome

AF:

0.0000592

AC:

AN:

152122

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74310

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000524

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000479

Alfa

AF:

0.0000434

Hom.:

Bravo

AF:

0.0000756

ExAC

AF:

0.0000331

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 13, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.442T>G (p.L148V) alteration is located in exon 5 (coding exon 5) of the TM2D1 gene. This alteration results from a T to G substitution at nucleotide position 442, causing the leucine (L) at amino acid position 148 to be replaced by a valine (V). 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

Uncertain

0.38

BayesDel_addAF

Benign

-0.013

BayesDel_noAF

Uncertain

0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

T;T;.

Eigen

Uncertain

0.27

Eigen_PC

Uncertain

0.25

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.97

.;D;D

M_CAP

Benign

0.0056

MetaRNN

Benign

0.29

T;T;T

MetaSVM

Benign

-0.85

MutationAssessor

Benign

0.89

L;L;.

PrimateAI

Pathogenic

0.84

PROVEAN

Uncertain

-2.8

.;D;D

REVEL

Uncertain

0.36

Sift

Uncertain

0.0050

.;D;T

Sift4G

Uncertain

0.059

T;T;T

Polyphen

1.0

D;D;.

Vest4

0.54

MutPred

0.54

Gain of methylation at K150 (P = 0.0562);Gain of methylation at K150 (P = 0.0562);.;

MVP

0.43

MPC

0.62

ClinPred

0.39

GERP RS

2.1

Varity_R

0.33

gMVP

0.68

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