Genetic Variant TMEM116:p.Cys173Arg (chr12-111936763-A-G) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001193531.2(TMEM116):c.517T>C(p.Cys173Arg) variant causes a missense change. The variant allele was found at a frequency of 0.000026 in 1,461,742 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000026 ( 1 hom. )

Consequence

TMEM116
NM_001193531.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.68

Publications

0 publications found

Variant links:

Genes affected

TMEM116 (HGNC:25084): (transmembrane protein 116) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

TMEM116 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.845

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMEM116	NM_001193531.2 link	c.517T>C	p.Cys173Arg	missense_variant	Exon 8 of 11	ENST00000552374.7	NP_001180460.1	Q8NCL8-2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMEM116	ENST00000552374.7 link	c.517T>C	p.Cys173Arg	missense_variant	Exon 8 of 11	1	NM_001193531.2	ENSP00000447731.1		Q8NCL8-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000438

AC:

AN:

251102

AF XY:

0.0000589

show subpopulations

Gnomad AFR exome

AF:

0.000123

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.0000996

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000440

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000260

AC:

AN:

1461742

Hom.:

Cov.:

AF XY:

0.0000289

AC XY:

AN XY:

727158

show subpopulations

African (AFR)

AF:

0.0000299

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44698

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26126

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39698

South Asian (SAS)

AF:

0.0000696

AC:

AN:

86220

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53416

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000243

AC:

AN:

1111940

Other (OTH)

AF:

0.0000331

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.458

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000494

Hom.:

Bravo

AF:

0.0000302

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000494

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.000296

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 06, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.517T>C (p.C173R) alteration is located in exon 8 (coding exon 7) of the TMEM116 gene. This alteration results from a T to C substitution at nucleotide position 517, causing the cysteine (C) at amino acid position 173 to be replaced by an arginine (R). 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

Pathogenic

0.88

BayesDel_addAF

Pathogenic

0.17

BayesDel_noAF

Pathogenic

0.21

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

T;.;.;.;.

Eigen

Uncertain

0.58

Eigen_PC

Uncertain

0.55

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.76

T;T;T;T;T

M_CAP

Benign

0.069

MetaRNN

Pathogenic

0.85

D;D;D;D;D

MetaSVM

Benign

-0.37

MutationAssessor

Uncertain

2.4

M;.;.;.;.

PhyloP100

4.7

PrimateAI

Uncertain

0.69

PROVEAN

Pathogenic

-7.5

D;D;D;.;D

REVEL

Uncertain

0.57

Sift

Uncertain

0.0050

D;D;D;.;D

Sift4G

Pathogenic

0.0

D;D;D;D;D

Polyphen

1.0

D;.;.;.;D

Vest4

0.93

MVP

0.78

MPC

0.79

ClinPred

0.94

GERP RS

5.1

Varity_R

0.86

gMVP

0.81

Mutation Taster

=90/10

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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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12-111936763-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over