Genetic Variant TCEANC2:p.Ile120Thr (chr1-54088711-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_153035.3(TCEANC2):c.359T>C(p.Ile120Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000441 in 1,611,248 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. I120V) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000047 ( 0 hom. )

Consequence

TCEANC2
NM_153035.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 7.64

Variant links:

Genes affected

TCEANC2 (HGNC:26494): (transcription elongation factor A N-terminal and central domain containing 2) Predicted to be involved in transcription, DNA-templated. Predicted to be located in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

TCEANC2 links:

Genome browser will be placed here

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
TCEANC2	NM_153035.3 link	c.359T>C	p.Ile120Thr	missense_variant	Exon 4 of 5	ENST00000234827.6	NP_694580.1	Q96MN5-1
TCEANC2	NR_130900.2 link	n.410T>C		non_coding_transcript_exon_variant	Exon 3 of 5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TCEANC2	ENST00000234827.6 link	c.359T>C	p.Ile120Thr	missense_variant	Exon 4 of 5	1	NM_153035.3	ENSP00000234827.1	Q96MN5-1
TCEANC2	ENST00000371331.1 link	c.449T>C	p.Ile150Thr	missense_variant	Exon 3 of 4	2		ENSP00000360382.1	X6R7X0
TCEANC2	ENST00000498272.1 link	n.431T>C		non_coding_transcript_exon_variant	Exon 3 of 5	2
TCEANC2	ENST00000648983.1 link	n.359T>C		non_coding_transcript_exon_variant	Exon 4 of 6			ENSP00000498109.1	Q96MN5-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152174

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:

0.000192

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000161

AC:

AN:

248766

Hom.:

AF XY:

0.0000149

AC XY:

AN XY:

134628

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:

0.00

Gnomad NFE exome

AF:

0.0000354

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000466

AC:

AN:

1458956

Hom.:

Cov.:

AF XY:

0.0000427

AC XY:

AN XY:

725764

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:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000594

Gnomad4 OTH exome

AF:

0.0000332

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152292

Hom.:

Cov.:

AF XY:

0.0000269

AC XY:

AN XY:

74474

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000564

Hom.:

Bravo

AF:

0.0000113

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000597

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.359T>C (p.I120T) alteration is located in exon 4 (coding exon 3) of the TCEANC2 gene. This alteration results from a T to C substitution at nucleotide position 359, causing the isoleucine (I) at amino acid position 120 to be replaced by a threonine (T). 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

Uncertain

0.37

BayesDel_addAF

Uncertain

0.016

BayesDel_noAF

Uncertain

-0.040

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.032

T;T

Eigen

Uncertain

0.68

Eigen_PC

Pathogenic

0.70

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.89

D;T

M_CAP

Benign

0.033

MetaRNN

Uncertain

0.46

T;T

MetaSVM

Benign

-0.82

MutationAssessor

Uncertain

2.6

M;.

PrimateAI

Uncertain

0.62

PROVEAN

Benign

-2.2

N;N

REVEL

Benign

0.24

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.0030

D;D

Polyphen

1.0

D;.

Vest4

0.74

MVP

0.28

MPC

0.80

ClinPred

0.61

GERP RS

6.0

Varity_R

0.25

gMVP

0.16

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