Variant 17-74222635-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The ENST00000269346.9(TTYH2):c.280G>A(p.Val94Met) variant causes a missense change. The variant allele was found at a frequency of 0.000064 in 1,610,060 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000064 ( 0 hom. )

Consequence

TTYH2
ENST00000269346.9 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.09

Variant links:

Genes affected

TTYH2 (HGNC:13877): (tweety family member 2) This gene encodes a member of the tweety family of proteins. Members of this family function as chloride anion channels. The encoded protein functions as a calcium(2+)-activated large conductance chloride(-) channel, and may play a role in kidney tumorigenesis. Two transcript variants encoding distinct isoforms have been identified for this gene. [provided by RefSeq, Jul 2008]

TTYH2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.32729793).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTYH2	NM_032646.6 linkuse as main transcript	c.280G>A	p.Val94Met	missense_variant	2/14	ENST00000269346.9	NP_116035.5
TTYH2	NM_001330453.2 linkuse as main transcript	c.217G>A	p.Val73Met	missense_variant	2/14		NP_001317382.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TTYH2	ENST00000269346.9 linkuse as main transcript	c.280G>A	p.Val94Met	missense_variant	2/14	1	NM_032646.6	ENSP00000269346	P1	Q9BSA4-1
TTYH2	ENST00000529107.5 linkuse as main transcript	c.217G>A	p.Val73Met	missense_variant	2/14	2		ENSP00000433089
TTYH2	ENST00000578825.5 linkuse as main transcript			upstream_gene_variant		5

Frequencies

GnomAD3 genomes

AF:

0.0000657

AC:

AN:

152264

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:

0.000385

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000735

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000889

AC:

AN:

247468

Hom.:

AF XY:

0.000104

AC XY:

AN XY:

134218

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000272

Gnomad SAS exome

AF:

0.000229

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000799

Gnomad OTH exome

AF:

0.000165

GnomAD4 exome

AF:

0.0000638

AC:

AN:

1457796

Hom.:

Cov.:

AF XY:

0.0000703

AC XY:

AN XY:

725386

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000202

Gnomad4 SAS exome

AF:

0.000116

Gnomad4 FIN exome

AF:

0.0000200

Gnomad4 NFE exome

AF:

0.0000603

Gnomad4 OTH exome

AF:

0.0000663

GnomAD4 genome

AF:

0.0000657

AC:

AN:

152264

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74390

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000385

Gnomad4 SAS

AF:

0.000414

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000735

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.0000680

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.0000989

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 16, 2021

The c.280G>A (p.V94M) alteration is located in exon 2 (coding exon 2) of the TTYH2 gene. This alteration results from a G to A substitution at nucleotide position 280, causing the valine (V) at amino acid position 94 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

Benign

-0.27

BayesDel_noAF

Benign

-0.32

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.15

T;T

Eigen

Pathogenic

0.73

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.94

LIST_S2

Uncertain

0.91

D;D

M_CAP

Benign

0.046

MetaRNN

Benign

0.33

T;T

MetaSVM

Benign

-0.85

MutationAssessor

Pathogenic

3.0

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.47

PROVEAN

Benign

-2.1

N;N

REVEL

Benign

0.24

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0040

D;D

Polyphen

1.0

D;D

Vest4

0.34

MVP

0.32

MPC

0.32

ClinPred

0.25

GERP RS

5.0

Varity_R

0.28

gMVP

0.48

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