1-74489217-T-C

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_015978.3(TNNI3K):c.2150T>C(p.Met717Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000595 in 1,612,280 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/20 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. M717V) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000060 ( 0 hom. )

Consequence

TNNI3K
NM_015978.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.265

Variant links:

Genes affected

TNNI3K (HGNC:19661): (TNNI3 interacting kinase) This gene encodes a protein that belongs to the MAP kinase kinase kinase (MAPKKK) family of protein kinases. The protein contains ankyrin repeat, protein kinase and serine-rich domains and is thought to play a role in cardiac physiology. [provided by RefSeq, Sep 2012]

TNNI3K links:

FPGT-TNNI3K (HGNC:):

FPGT-TNNI3K links:

LRRC53 (HGNC:25255): (leucine rich repeat containing 53) Predicted to be integral component of membrane. Predicted to be active in plasma membrane. [provided by Alliance of Genome Resources, Apr 2022]

LRRC53 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.03071168).

BS2

High AC in GnomAd at 9 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TNNI3K	NM_015978.3 linkuse as main transcript	c.2150T>C	p.Met717Thr	missense_variant	22/25	ENST00000326637.8
FPGT-TNNI3K	NM_001112808.3 linkuse as main transcript	c.2453T>C	p.Met818Thr	missense_variant	24/27
LRRC53	NM_001382280.1 linkuse as main transcript	c.-26-5842A>G		intron_variant		ENST00000294635.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNNI3K	ENST00000326637.8 linkuse as main transcript	c.2150T>C	p.Met717Thr	missense_variant	22/25	1	NM_015978.3	P1	Q59H18-2
LRRC53	ENST00000294635.5 linkuse as main transcript	c.-26-5842A>G		intron_variant		5	NM_001382280.1	P1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152224

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:

0.000471

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000721

AC:

AN:

249656

Hom.:

AF XY:

0.0000519

AC XY:

AN XY:

134964

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:

0.000416

Gnomad NFE exome

AF:

0.0000794

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000596

AC:

AN:

1460056

Hom.:

Cov.:

AF XY:

0.0000523

AC XY:

AN XY:

726348

show subpopulations

Gnomad4 AFR exome

AF:

0.0000300

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.000431

Gnomad4 NFE exome

AF:

0.0000495

Gnomad4 OTH exome

AF:

0.000133

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74376

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:

0.000471

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000107

Hom.:

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000824

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Nov 24, 2023

This sequence change replaces methionine, which is neutral and non-polar, with threonine, which is neutral and polar, at codon 717 of the TNNI3K protein (p.Met717Thr). This variant is present in population databases (rs199698996, gnomAD 0.04%), and has an allele count higher than expected for a pathogenic variant. This variant has not been reported in the literature in individuals affected with TNNI3K-related conditions. ClinVar contains an entry for this variant (Variation ID: 1435480). Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Not Available"; PolyPhen-2: "Benign"; Align-GVGD: "Not Available". The threonine amino acid residue is found in multiple mammalian species, which suggests that this missense change does not adversely affect protein function. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.046

BayesDel_addAF

Benign

-0.23

BayesDel_noAF

Benign

-0.37

Cadd

Benign

0.0030

Dann

Benign

0.58

Eigen

Benign

-2.1

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.0043

LIST_S2

Benign

0.34

T;T

M_CAP

Benign

0.0051

MetaRNN

Benign

0.031

T;T

MetaSVM

Benign

-1.0

MutationTaster

Benign

1.0

N;N

REVEL

Benign

0.24

Sift4G

Benign

0.67

T;T

Polyphen

0.0

.;B

Vest4

0.25

MVP

0.42

MPC

0.024

ClinPred

0.049

GERP RS

-4.3

Varity_R

0.10

gMVP

0.30

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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