Genetic Variant NM_173826.4:c.1172T>C (chr3-44401256-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_173826.4(TCAIM):c.1172T>C(p.Leu391Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000889 in 1,461,800 control chromosomes in the GnomAD database, with no homozygous occurrence. 12/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000089 ( 0 hom. )

Consequence

TCAIM
NM_173826.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.82

Variant links:

Genes affected

TCAIM (HGNC:25241): (T cell activation inhibitor, mitochondrial) Located in mitochondrion. [provided by Alliance of Genome Resources, Apr 2022]

TCAIM links:

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ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
TCAIM	NM_173826.4 link	c.1172T>C	p.Leu391Pro	missense_variant	Exon 10 of 11	ENST00000342649.9	NP_776187.2	Q8N3R3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TCAIM	ENST00000342649.9 link	c.1172T>C	p.Leu391Pro	missense_variant	Exon 10 of 11	1	NM_173826.4	ENSP00000341539.4		Q8N3R3-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

251416

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135886

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:

0.000163

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000889

AC:

AN:

1461800

Hom.:

Cov.:

AF XY:

0.00000963

AC XY:

AN XY:

727202

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000927

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000180

Gnomad4 OTH exome

AF:

0.0000331

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000330

AC:

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Nov 02, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1172T>C (p.L391P) alteration is located in exon 10 (coding exon 9) of the TCAIM gene. This alteration results from a T to C substitution at nucleotide position 1172, causing the leucine (L) at amino acid position 391 to be replaced by a proline (P). 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

0.23

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.27

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.032

T;T

Eigen

Benign

-0.027

Eigen_PC

Benign

-0.068

FATHMM_MKL

Benign

0.31

LIST_S2

Benign

0.81

.;T

M_CAP

Benign

0.016

MetaRNN

Uncertain

0.43

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Uncertain

2.0

M;M

PrimateAI

Benign

0.41

PROVEAN

Benign

-0.35

N;N

REVEL

Benign

0.13

Sift

Benign

0.20

T;T

Sift4G

Benign

0.11

T;T

Polyphen

0.93

P;P

Vest4

0.57

MutPred

0.49

Gain of relative solvent accessibility (P = 0.0023);Gain of relative solvent accessibility (P = 0.0023);

MVP

0.54

MPC

0.61

ClinPred

0.34

GERP RS

4.5

Varity_R

0.092

gMVP

0.64

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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