rs370392549

Positions:

chr17-78125254-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001127198.5(TMC6):c.440G>A(p.Ser147Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000102 in 1,569,856 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000011 ( 0 hom. )

Consequence

TMC6
NM_001127198.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: -0.593

Variant links:

Genes affected

TMC6 (HGNC:18021): (transmembrane channel like 6) Epidermodysplasia verruciformis (EV) is an autosomal recessive dermatosis characterized by abnormal susceptibility to human papillomaviruses (HPVs) and a high rate of progression to squamous cell carcinoma on sun-exposed skin. EV is caused by mutations in either of two adjacent genes located on chromosome 17q25.3. Both of these genes encode integral membrane proteins that localize to the endoplasmic reticulum and are predicted to form transmembrane channels. This gene encodes a transmembrane channel-like protein with 10 transmembrane domains and 2 leucine zipper motifs. [provided by RefSeq, Jul 2008]

TMC6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.08160707).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TMC6	NM_001127198.5 linkuse as main transcript	c.440G>A	p.Ser147Asn	missense_variant	6/20	ENST00000590602.6	NP_001120670.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TMC6	ENST00000590602.6 linkuse as main transcript	c.440G>A	p.Ser147Asn	missense_variant	6/20	2	NM_001127198.5	ENSP00000465261	P1	Q7Z403-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152238

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.00

GnomAD3 exomes

AF:

0.00000562

AC:

AN:

178016

Hom.:

AF XY:

0.00

AC XY:

AN XY:

94902

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:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000209

GnomAD4 exome

AF:

0.0000106

AC:

AN:

1417618

Hom.:

Cov.:

AF XY:

0.00000856

AC XY:

AN XY:

701252

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000263

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000266

Gnomad4 SAS exome

AF:

0.0000124

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.000204

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152238

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

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:

0.00

Alfa

AF:

0.0000868

Hom.:

Bravo

AF:

0.0000302

Asia WGS

AF:

0.00375

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Epidermodysplasia verruciformis

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 28, 2023

This sequence change replaces serine, which is neutral and polar, with asparagine, which is neutral and polar, at codon 147 of the TMC6 protein (p.Ser147Asn). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with TMC6-related conditions. ClinVar contains an entry for this variant (Variation ID: 572907). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

TMC6-related disorder

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Sep 27, 2022

The TMC6 c.440G>A variant is predicted to result in the amino acid substitution p.Ser147Asn. To our knowledge, this variant has not been reported in the literature. This variant is reported in 0.0% of alleles in individuals of African descent in gnomAD (http://gnomad.broadinstitute.org/variant/17-76121335-C-T). At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.069

BayesDel_addAF

Benign

-0.30

BayesDel_noAF

Benign

-0.66

CADD

Benign

7.5

DANN

Benign

0.97

DEOGEN2

Benign

0.018

T;T;T;.;.;T

Eigen

Benign

-0.63

Eigen_PC

Benign

-0.66

FATHMM_MKL

Benign

0.090

LIST_S2

Benign

0.33

.;.;T;T;T;T

M_CAP

Benign

0.051

MetaRNN

Benign

0.082

T;T;T;T;T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.2

L;L;L;L;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-0.95

.;N;N;N;.;.

REVEL

Benign

0.062

Sift

Benign

0.35

.;T;T;T;.;.

Sift4G

Benign

0.45

T;T;T;T;.;.

Polyphen

0.030

B;B;B;P;.;.

Vest4

0.070

MutPred

0.38

Loss of phosphorylation at S147 (P = 0.0285);Loss of phosphorylation at S147 (P = 0.0285);Loss of phosphorylation at S147 (P = 0.0285);Loss of phosphorylation at S147 (P = 0.0285);Loss of phosphorylation at S147 (P = 0.0285);Loss of phosphorylation at S147 (P = 0.0285);

MVP

0.12

MPC

0.15

ClinPred

0.23

GERP RS

-0.088

Varity_R

0.070

gMVP

0.14

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.13

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