Variant chr20-45824546-T-A details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_003279.3(TNNC2):c.148A>T(p.Thr50Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000657 in 152,142 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 0.0000066 ( 0 hom., cov: 32)

Consequence

TNNC2
NM_003279.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 8.02

Variant links:

Genes affected

TNNC2 (HGNC:11944): (troponin C2, fast skeletal type) Troponin (Tn), a key protein complex in the regulation of striated muscle contraction, is composed of 3 subunits. The Tn-I subunit inhibits actomyosin ATPase, the Tn-T subunit binds tropomyosin and Tn-C, while the Tn-C subunit binds calcium and overcomes the inhibitory action of the troponin complex on actin filaments. The protein encoded by this gene is the Tn-C subunit. [provided by RefSeq, Jul 2008]

TNNC2 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=0.19963178).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TNNC2	NM_003279.3 linkuse as main transcript	c.148A>T	p.Thr50Ser	missense_variant	3/6	ENST00000372555.8	NP_003270.1
TNNC2	XM_011529031.3 linkuse as main transcript	c.103A>T	p.Thr35Ser	missense_variant	3/6		XP_011527333.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
TNNC2	ENST00000372555.8 linkuse as main transcript	c.148A>T	p.Thr50Ser	missense_variant	3/6	1	NM_003279.3	ENSP00000361636	P1
TNNC2	ENST00000372557.1 linkuse as main transcript	c.103A>T	p.Thr35Ser	missense_variant	4/7	3		ENSP00000361638

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152142

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

Cov.:

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152142

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

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

Bravo

AF:

0.00000378

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

Aug 01, 2022

The c.148A>T (p.T50S) alteration is located in exon 3 (coding exon 3) of the TNNC2 gene. This alteration results from a A to T substitution at nucleotide position 148, causing the threonine (T) at amino acid position 50 to be replaced by a serine (S). 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

0.17

BayesDel_addAF

Benign

-0.022

BayesDel_noAF

Benign

-0.27

CADD

Uncertain

DANN

Uncertain

0.98

DEOGEN2

Benign

0.29

T;.

Eigen

Benign

-0.13

Eigen_PC

Benign

0.084

FATHMM_MKL

Uncertain

0.94

LIST_S2

Benign

0.77

T;T

M_CAP

Benign

0.039

MetaRNN

Benign

0.20

T;T

MetaSVM

Benign

-0.71

MutationAssessor

Benign

0.79

N;.

MutationTaster

Benign

0.93

D;D

PrimateAI

Uncertain

0.71

PROVEAN

Benign

0.68

N;N

REVEL

Uncertain

0.32

Sift

Benign

0.11

T;D

Sift4G

Benign

0.15

T;T

Polyphen

0.0

B;.

Vest4

0.20

MutPred

0.45

Gain of disorder (P = 0.0794);.;

MVP

0.24

MPC

0.77

ClinPred

0.89

GERP RS

4.5

Varity_R

0.15

gMVP

0.42

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