2-134502978-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM1PM2PP2

The NM_030923.5(TMEM163):c.478G>A(p.Val160Met) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,430 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

TMEM163
NM_030923.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.50

Publications

0 publications found

Variant links:

Genes affected

TMEM163 (HGNC:25380): (transmembrane protein 163) Predicted to enable zinc ion binding activity. Predicted to be involved in zinc ion import into synaptic vesicle. Predicted to be located in early endosome membrane. Predicted to be active in intracellular vesicle and plasma membrane. Predicted to be integral component of synaptic vesicle membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM163 Gene-Disease associations (from GenCC):

leukodystrophy, hypomyelinating, 25
Inheritance: AD Classification: STRONG, MODERATE, LIMITED Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P

TMEM163 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM1

In a chain Transmembrane protein 163 (size 288) in uniprot entity TM163_HUMAN there are 4 pathogenic changes around while only 1 benign (80%) in NM_030923.5

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 4 curated pathogenic missense variants (we use a threshold of 10). The gene has 0 curated benign missense variants. Gene score misZ: 1.7669 (below the threshold of 3.09). Trascript score misZ: 1.0332 (below the threshold of 3.09). GenCC associations: The gene is linked to leukodystrophy, hypomyelinating, 25.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM163	NM_030923.5 link	c.478G>A	p.Val160Met	missense_variant	Exon 5 of 8	ENST00000281924.6	NP_112185.1	Q8TC26-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM163	ENST00000281924.6 link	c.478G>A	p.Val160Met	missense_variant	Exon 5 of 8	1	NM_030923.5	ENSP00000281924.6		Q8TC26-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000399

AC:

AN:

250568

AF XY:

0.00000739

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:

6.84e-7

AC:

AN:

1461430

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726946

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33476

American (AMR)

AF:

0.00

AC:

AN:

44678

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.00

AC:

AN:

39678

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86120

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53404

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1111798

Other (OTH)

AF:

0.00

AC:

AN:

60382

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

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

Dec 28, 2023

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.478G>A (p.V160M) alteration is located in exon 5 (coding exon 5) of the TMEM163 gene. This alteration results from a G to A substitution at nucleotide position 478, causing the valine (V) at amino acid position 160 to be replaced by a methionine (M). 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

0.18

BayesDel_addAF

Uncertain

0.071

BayesDel_noAF

Uncertain

-0.040

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.072

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.72

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.019

MetaRNN

Uncertain

0.57

MetaSVM

Benign

-0.34

MutationAssessor

Benign

0.97

PhyloP100

4.5

PrimateAI

Uncertain

0.77

PROVEAN

Benign

-1.3

REVEL

Benign

0.20

Sift

Uncertain

0.027

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.71

MutPred

0.25

Loss of catalytic residue at V160 (P = 0.0018);

MVP

0.36

MPC

1.5

ClinPred

0.70

GERP RS

5.8

Varity_R

0.16

gMVP

0.79

Mutation Taster

=69/31

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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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