1-74236102-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_015978.3(TNNI3K):c.41A>G(p.Asp14Gly) variant causes a missense, splice region change. The variant was absent in control chromosomes in GnomAD project. 3/3 splice prediction tools predict no significant impact on normal splicing. 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. D14E) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: TNNI3K NM_015978.3 missense, splice_region
• Scores: Splicing: ADA: 0.01034
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.37

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]

FPGT-TNNI3K (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TNNI3K	NM_015978.3	c.41A>G	p.Asp14Gly	missense_variant, splice_region_variant	2/25	ENST00000326637.8
FPGT-TNNI3K	NM_001112808.3	c.344A>G	p.Asp115Gly	missense_variant, splice_region_variant	4/27
FPGT-TNNI3K	NM_001199327.2	c.344A>G	p.Asp115Gly	missense_variant, splice_region_variant	4/24

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TNNI3K	ENST00000326637.8	c.41A>G	p.Asp14Gly	missense_variant, splice_region_variant	2/25	1	NM_015978.3	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Sep 13, 2023

This sequence change replaces aspartic acid, which is acidic and polar, with glycine, which is neutral and non-polar, at codon 14 of the TNNI3K protein (p.Asp14Gly). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with TNNI3K-related conditions. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. 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	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.26	D
BayesDel_noAF	Pathogenic	0.14
Cadd	Uncertain	25
Dann	Uncertain	1.0
Eigen	Pathogenic	0.82
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Uncertain	0.95	D
LIST_S2	Benign	0.33	T;T;T;T;D
M_CAP	Uncertain	0.21	D
MetaRNN	Uncertain	0.65	D;D;D;D;D
MetaSVM	Uncertain	-0.016	T
MutationTaster	Benign	1.0	D;D;D
REVEL	Uncertain	0.35
Sift4G	Benign	0.24	T;T;T;T;D
Polyphen		1.0	.;.;.;.;D
Vest4		0.74
MutPred		0.31		.;.;.;.;Gain of MoRF binding (P = 0.0377);
MVP		0.94
MPC		0.20
ClinPred		0.94	D
GERP RS		4.4
Varity_R		0.57
gMVP		0.75

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.010
dbscSNV1_RF	Benign	0.23
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

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-74701786;