Genetic Variant ITM2C:p.Met70Val (chr2-230873504-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

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

The NM_030926.6(ITM2C):c.208A>G(p.Met70Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000478 in 1,611,084 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000092 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

ITM2C
NM_030926.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.133

Variant links:

Genes affected

ITM2C (HGNC:6175): (integral membrane protein 2C) Enables amyloid-beta binding activity. Involved in negative regulation of neuron projection development and neuron differentiation. Located in several cellular components, including Golgi apparatus; lysosome; and perinuclear region of cytoplasm. [provided by Alliance of Genome Resources, Apr 2022]

ITM2C 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=0.018708915).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ITM2C	NM_030926.6 link	c.208A>G	p.Met70Val	missense_variant	Exon 2 of 6	ENST00000326427.11	NP_112188.1	Q9NQX7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ITM2C	ENST00000326427.11 link	c.208A>G	p.Met70Val	missense_variant	Exon 2 of 6	1	NM_030926.6	ENSP00000322730.6		Q9NQX7-1

Frequencies

GnomAD3 genomes

AF:

0.0000920

AC:

AN:

152182

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000724

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000654

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000197

AC:

AN:

248470

Hom.:

AF XY:

0.000156

AC XY:

AN XY:

134446

show subpopulations

Gnomad AFR exome

AF:

0.000124

Gnomad AMR exome

AF:

0.00131

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000500

GnomAD4 exome

AF:

0.0000432

AC:

AN:

1458902

Hom.:

Cov.:

AF XY:

0.0000331

AC XY:

AN XY:

725700

show subpopulations

Gnomad4 AFR exome

AF:

0.0000599

Gnomad4 AMR exome

AF:

0.00124

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000920

AC:

AN:

152182

Hom.:

Cov.:

AF XY:

0.0000807

AC XY:

AN XY:

74344

show subpopulations

Gnomad4 AFR

AF:

0.0000724

Gnomad4 AMR

AF:

0.000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000127

Hom.:

Bravo

AF:

0.000155

ExAC

AF:

0.000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 20, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.208A>G (p.M70V) alteration is located in exon 2 (coding exon 2) of the ITM2C gene. This alteration results from a A to G substitution at nucleotide position 208, causing the methionine (M) at amino acid position 70 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

Benign

0.13

BayesDel_addAF

Benign

-0.44

BayesDel_noAF

Benign

-0.44

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.012

T;.;T;.;T;.;.

Eigen

Benign

-0.71

Eigen_PC

Benign

-0.60

FATHMM_MKL

Benign

0.15

LIST_S2

Uncertain

0.91

D;.;D;D;D;D;D

M_CAP

Benign

0.0073

MetaRNN

Benign

0.019

T;T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

.;.;L;L;.;.;.

PrimateAI

Benign

0.42

PROVEAN

Benign

-0.49

N;N;N;N;N;N;N

REVEL

Benign

0.027

Sift

Benign

0.28

T;D;T;T;D;D;D

Sift4G

Benign

0.45

T;T;T;T;T;T;T

Polyphen

0.011, 0.085

.;.;B;B;.;.;.

Vest4

0.35, 0.39, 0.40

MVP

0.28

MPC

0.24

ClinPred

0.0047

GERP RS

1.0

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.6

Varity_R

0.049

gMVP

0.58

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