11-1840553-C-T

Position:

chr11-1840553-C-T

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 2P and 7B. PM1BP4_ModerateBP6BS2

The NM_003282.4(TNNI2):c.83C>T(p.Thr28Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000664 in 1,612,416 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.000053 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000068 ( 1 hom. )

Consequence

TNNI2
NM_003282.4 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:1

Conservation

PhyloP100: 0.113

Variant links:

Genes affected

TNNI2 (HGNC:11946): (troponin I2, fast skeletal type) This gene encodes a fast-twitch skeletal muscle protein, a member of the troponin I gene family, and a component of the troponin complex including troponin T, troponin C and troponin I subunits. The troponin complex, along with tropomyosin, is responsible for the calcium-dependent regulation of striated muscle contraction. Mouse studies show that this component is also present in vascular smooth muscle and may play a role in regulation of smooth muscle function. In addition to muscle tissues, this protein is found in corneal epithelium, cartilage where it is an inhibitor of angiogenesis to inhibit tumor growth and metastasis, and mammary gland where it functions as a co-activator of estrogen receptor-related receptor alpha. This protein also suppresses tumor growth in human ovarian carcinoma. Mutations in this gene cause myopathy and distal arthrogryposis type 2B. Alternatively spliced transcript variants have been found for this gene. [provided by RefSeq, Mar 2009]

TNNI2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

PM1

In a chain Troponin I, fast skeletal muscle (size 180) in uniprot entity TNNI2_HUMAN there are 17 pathogenic changes around while only 1 benign (94%) in NM_003282.4

BP4

Computational evidence support a benign effect (MetaRNN=0.26028514).

BP6

Variant 11-1840553-C-T is Benign according to our data. Variant chr11-1840553-C-T is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 1194584.We mark this variant Likely_benign, oryginal submissions are: {Uncertain_significance=1, Likely_benign=1}.

BS2

High AC in GnomAd4 at 8 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
TNNI2	NM_003282.4 linkuse as main transcript	c.83C>T	p.Thr28Met	missense_variant	5/8	ENST00000381911.6
TNNI2	NM_001145829.2 linkuse as main transcript	c.83C>T	p.Thr28Met	missense_variant	5/8
TNNI2	NM_001145841.2 linkuse as main transcript	c.83C>T	p.Thr28Met	missense_variant	3/6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNNI2	ENST00000381911.6 linkuse as main transcript	c.83C>T	p.Thr28Met	missense_variant	5/8	2	NM_003282.4	A1	P48788-1

Frequencies

GnomAD3 genomes

AF:

0.0000526

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000192

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000935

AC:

AN:

246016

Hom.:

AF XY:

0.000119

AC XY:

AN XY:

134312

show subpopulations

Gnomad AFR exome

AF:

0.0000643

Gnomad AMR exome

AF:

0.0000582

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000327

Gnomad FIN exome

AF:

0.0000471

Gnomad NFE exome

AF:

0.0000724

Gnomad OTH exome

AF:

0.000167

GnomAD4 exome

AF:

0.0000678

AC:

AN:

1460078

Hom.:

Cov.:

AF XY:

0.0000675

AC XY:

AN XY:

726308

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.000209

Gnomad4 FIN exome

AF:

0.0000192

Gnomad4 NFE exome

AF:

0.0000612

Gnomad4 OTH exome

AF:

0.0000829

GnomAD4 genome

AF:

0.0000525

AC:

AN:

152338

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74498

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000261

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.000207

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000752

Hom.:

Bravo

AF:

0.0000642

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.000157

AC:

Asia WGS

AF:

0.000289

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1Benign:1

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 07, 2022

The c.83C>T (p.T28M) alteration is located in exon 5 (coding exon 4) of the TNNI2 gene. This alteration results from a C to T substitution at nucleotide position 83, causing the threonine (T) at amino acid position 28 to be replaced by a methionine (M). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 09, 2020

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Benign

-0.18

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.73

D;D;.;D;.

Eigen

Benign

-0.36

Eigen_PC

Benign

-0.55

FATHMM_MKL

Benign

0.095

M_CAP

Pathogenic

0.74

MetaRNN

Benign

0.26

T;T;T;T;T

MetaSVM

Uncertain

0.11

MutationAssessor

Benign

2.0

M;M;.;M;M

MutationTaster

Benign

0.95

N;N;N;N

PrimateAI

Pathogenic

0.80

PROVEAN

Benign

-1.9

N;N;.;N;N

REVEL

Uncertain

0.32

Sift

Uncertain

0.028

D;D;.;D;D

Sift4G

Uncertain

0.029

D;D;D;D;D

Polyphen

0.97

D;D;.;D;.

Vest4

0.42

MVP

0.97

MPC

0.68

ClinPred

0.072

GERP RS

1.8

Varity_R

0.027

gMVP

0.15

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