Variant 7-2652220-G-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The ENST00000258796.12(TTYH3):c.905G>A(p.Arg302His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000744 in 1,612,796 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R302C) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000071 ( 0 hom. )

Consequence

TTYH3
ENST00000258796.12 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.826

Variant links:

Genes affected

TTYH3 (HGNC:22222): (tweety family member 3) 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. [provided by RefSeq, Jul 2008]

TTYH3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.006044239).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTYH3	NM_025250.3 linkuse as main transcript	c.905G>A	p.Arg302His	missense_variant	8/14	ENST00000258796.12	NP_079526.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TTYH3	ENST00000258796.12 linkuse as main transcript	c.905G>A	p.Arg302His	missense_variant	8/14	1	NM_025250.3	ENSP00000258796	P3	Q9C0H2-1
TTYH3	ENST00000429448.2 linkuse as main transcript	c.905G>A	p.Arg302His	missense_variant	8/15	2		ENSP00000413757	A1	Q9C0H2-4
TTYH3	ENST00000407643.5 linkuse as main transcript	c.809G>A	p.Arg270His	missense_variant	7/13	5		ENSP00000385316		Q9C0H2-2
TTYH3	ENST00000403167.5 linkuse as main transcript	c.392G>A	p.Arg131His	missense_variant	4/10	5		ENSP00000385015		Q9C0H2-3

Frequencies

GnomAD3 genomes

AF:

0.000105

AC:

AN:

152234

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00403

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000216

AC:

AN:

249504

Hom.:

AF XY:

0.000177

AC XY:

AN XY:

135254

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00428

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000710

Gnomad OTH exome

AF:

0.000491

GnomAD4 exome

AF:

0.0000712

AC:

104

AN:

1460562

Hom.:

Cov.:

AF XY:

0.0000702

AC XY:

AN XY:

726634

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00291

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000117

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.000105

AC:

AN:

152234

Hom.:

Cov.:

AF XY:

0.0000941

AC XY:

AN XY:

74376

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00403

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000291

Hom.:

Bravo

AF:

0.000113

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.000165

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.0000593

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

Jun 11, 2021

The c.905G>A (p.R302H) alteration is located in exon 8 (coding exon 8) of the TTYH3 gene. This alteration results from a G to A substitution at nucleotide position 905, causing the arginine (R) at amino acid position 302 to be replaced by a histidine (H). 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

0.069

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.66

CADD

Benign

7.8

DANN

Benign

0.96

DEOGEN2

Benign

0.11

T;.;.

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.21

LIST_S2

Benign

0.82

T;T;T

M_CAP

Benign

0.0080

MetaRNN

Benign

0.0060

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

1.4

L;.;.

MutationTaster

Benign

1.0

N;N;N

PrimateAI

Benign

0.29

PROVEAN

Benign

-0.61

N;N;N

REVEL

Benign

0.027

Sift

Benign

0.13

T;T;T

Sift4G

Benign

0.33

T;T;T

Polyphen

0.0070

B;.;B

Vest4

0.18

MVP

0.10

MPC

0.28

ClinPred

0.028

GERP RS

-1.0

Varity_R

0.080

gMVP

0.24

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