chr17-78113538-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBS1BS2

The NM_001127198.5(TMC6):c.2354+10C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000903 in 1,613,782 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.0011 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00088 ( 3 hom. )

Consequence

TMC6
NM_001127198.5 intron

Scores

Clinical Significance

Benign criteria provided, single submitter B:2

Conservation

PhyloP100: -3.10

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

epidermodysplasia verruciformis, susceptibility to, 1
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics
epidermodysplasia verruciformis
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Orphanet

TMC6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -14 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.9).

BP6

Variant 17-78113538-G-A is Benign according to our data. Variant chr17-78113538-G-A is described in ClinVar as Benign. ClinVar VariationId is 456013.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population nfe. GnomAd4 allele frequency = 0.00109 (166/152068) while in subpopulation NFE AF = 0.00149 (101/67966). AF 95% confidence interval is 0.00125. There are 0 homozygotes in GnomAd4. There are 72 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 3 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TMC6	NM_001127198.5 link	c.2354+10C>T		intron_variant	Intron 19 of 19	ENST00000590602.6	NP_001120670.1	Q7Z403-1A0A024R8V2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TMC6	ENST00000590602.6 link	c.2354+10C>T		intron_variant	Intron 19 of 19	2	NM_001127198.5	ENSP00000465261.1		Q7Z403-1

Frequencies

GnomAD3 genomes

AF:

0.00109

AC:

166

AN:

151950

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000919

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

Gnomad ASJ

AF:

0.00433

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000566

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00149

Gnomad OTH

AF:

0.00144

GnomAD2 exomes

AF:

0.00103

AC:

258

AN:

251090

AF XY:

0.000906

show subpopulations

Gnomad AFR exome

AF:

0.00111

Gnomad AMR exome

AF:

0.000202

Gnomad ASJ exome

AF:

0.00378

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000925

Gnomad NFE exome

AF:

0.00150

Gnomad OTH exome

AF:

0.000816

GnomAD4 exome

AF:

0.000884

AC:

1292

AN:

1461714

Hom.:

Cov.:

AF XY:

0.000904

AC XY:

657

AN XY:

727150

show subpopulations

African (AFR)

AF:

0.00105

AC:

AN:

33480

American (AMR)

AF:

0.000179

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00352

AC:

AN:

26136

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39700

South Asian (SAS)

AF:

0.0000116

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.000825

AC:

AN:

53316

Middle Eastern (MID)

AF:

0.000173

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.000957

AC:

1064

AN:

1111946

Other (OTH)

AF:

0.000762

AC:

AN:

60392

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.471

Heterozygous variant carriers

149

224

298

373

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

100

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00109

AC:

166

AN:

152068

Hom.:

Cov.:

AF XY:

0.000968

AC XY:

AN XY:

74354

show subpopulations

African (AFR)

AF:

0.000917

AC:

AN:

41458

American (AMR)

AF:

0.000196

AC:

AN:

15268

Ashkenazi Jewish (ASJ)

AF:

0.00433

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5172

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.000566

AC:

AN:

10602

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.00149

AC:

101

AN:

67966

Other (OTH)

AF:

0.00142

AC:

AN:

2110

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.512

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00190

Hom.:

Bravo

AF:

0.00100

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Epidermodysplasia verruciformis

Benign:1

Jan 17, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

TMC6-related disorder

Benign:1

May 29, 2019

PreventionGenetics, part of Exact Sciences

Significance:Likely benign

Review Status:no assertion criteria provided

Collection Method:clinical testing

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.90

CADD

Benign

0.28

(source)

DANN

Benign

0.56

PhyloP100

-3.1

Mutation Taster

=100/0

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

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over