NM_015978.3:c.22C>T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2PP3

The NM_015978.3(TNNI3K):c.22C>T(p.Pro8Ser) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic 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. P8Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

TNNI3K
NM_015978.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 4.42

Publications

0 publications found

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:42952): (FPGT-TNNI3K readthrough) Enables protein C-terminus binding activity; protein kinase activity; and troponin I binding activity. Involved in protein phosphorylation and regulation of heart contraction. Located in cytoplasm and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

FPGT-TNNI3K links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.797

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TNNI3K	NM_015978.3 link	c.22C>T	p.Pro8Ser	missense_variant	Exon 1 of 25	ENST00000326637.8	NP_057062.1	Q59H18-2
FPGT-TNNI3K	NM_001112808.3 link	c.344-629C>T		intron_variant	Intron 3 of 26		NP_001106279.3	V9GXZ4
FPGT-TNNI3K	NM_001199327.2 link	c.344-629C>T		intron_variant	Intron 3 of 23		NP_001186256.3	Q59H18-4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TNNI3K	ENST00000326637.8 link	c.22C>T	p.Pro8Ser	missense_variant	Exon 1 of 25	1	NM_015978.3	ENSP00000322251.3		Q59H18-2
FPGT-TNNI3K	ENST00000557284.7 link	c.344-629C>T		intron_variant	Intron 3 of 26	2		ENSP00000450895.3		V9GXZ4

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000882

AC:

AN:

226636

AF XY:

0.0000162

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 FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000187

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1358714

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

680414

African (AFR)

AF:

0.00

AC:

AN:

29778

American (AMR)

AF:

0.00

AC:

AN:

36874

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

24960

East Asian (EAS)

AF:

0.00

AC:

AN:

37814

South Asian (SAS)

AF:

0.00

AC:

AN:

79616

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53088

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5540

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1034436

Other (OTH)

AF:

0.00

AC:

AN:

56608

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Apr 17, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.22C>T (p.P8S) alteration is located in exon 1 (coding exon 1) of the TNNI3K gene. This alteration results from a C to T substitution at nucleotide position 22, causing the proline (P) at amino acid position 8 to be replaced by a serine (S). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

not provided

Uncertain:1

May 18, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with TNNI3K-related conditions. This variant is present in population databases (rs750523606, gnomAD 0.002%). This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 8 of the TNNI3K protein (p.Pro8Ser). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.81

BayesDel_addAF

Pathogenic

0.16

BayesDel_noAF

Uncertain

0.020

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.058

Eigen

Pathogenic

0.75

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.91

M_CAP

Benign

0.058

MetaRNN

Pathogenic

0.80

MetaSVM

Uncertain

0.20

MutationAssessor

Benign

1.1

PhyloP100

4.4

PROVEAN

Benign

-1.9

REVEL

Uncertain

0.51

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.69

MutPred

0.47

Gain of MoRF binding (P = 0.0289);

MVP

0.80

ClinPred

0.49

GERP RS

5.7

PromoterAI

-0.00010

Neutral

(source)

Varity_R

0.19

gMVP

0.60

Mutation Taster

=48/52

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over