Genetic Variant TERB1:p.Arg706Gln (chr16-66755043-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001136505.2(TERB1):c.2117G>A(p.Arg706Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000606 in 1,551,518 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000085 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000058 ( 0 hom. )

Consequence

TERB1
NM_001136505.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.66

Variant links:

Genes affected

TERB1 (HGNC:26675): (telomere repeat binding bouquet formation protein 1) Predicted to be involved in homologous chromosome pairing at meiosis and meiotic attachment of telomere to nuclear envelope. Predicted to be located in chromosome, telomeric region and nuclear inner membrane. Predicted to colocalize with shelterin complex. [provided by Alliance of Genome Resources, Apr 2022]

TERB1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.885

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TERB1	NM_001136505.2 link	c.2117G>A	p.Arg706Gln	missense_variant	Exon 19 of 19	ENST00000433154.6	NP_001129977.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
TERB1	ENST00000433154.6 link	c.2117G>A	p.Arg706Gln	missense_variant	Exon 19 of 19	5	NM_001136505.2	ENSP00000463762.1		Q8NA31-1
TERB1	ENST00000558713.6 link	c.2117G>A	p.Arg706Gln	missense_variant	Exon 18 of 18	5		ENSP00000462883.1		Q8NA31-1

Frequencies

GnomAD3 genomes

AF:

0.0000854

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00000649

AC:

AN:

154054

Hom.:

AF XY:

0.00

AC XY:

AN XY:

81746

show subpopulations

Gnomad AFR exome

AF:

0.000126

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000579

AC:

AN:

1399330

Hom.:

Cov.:

AF XY:

0.0000638

AC XY:

AN XY:

690176

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000280

Gnomad4 SAS exome

AF:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000704

Gnomad4 OTH exome

AF:

0.0000517

GnomAD4 genome

AF:

0.0000854

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.0000672

AC XY:

AN XY:

74366

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.0000655

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000882

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.0000386

Hom.:

Bravo

AF:

0.0000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jul 13, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.2117G>A (p.R706Q) alteration is located in exon 19 (coding exon 17) of the TERB1 gene. This alteration results from a G to A substitution at nucleotide position 2117, causing the arginine (R) at amino acid position 706 to be replaced by a glutamine (Q). 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

0.42

BayesDel_addAF

Benign

-0.020

BayesDel_noAF

Uncertain

-0.030

CADD

Pathogenic

DANN

Uncertain

0.99

DEOGEN2

Benign

0.036

T;T

Eigen

Pathogenic

0.79

Eigen_PC

Pathogenic

0.77

FATHMM_MKL

Uncertain

0.82

LIST_S2

Uncertain

0.88

.;D

M_CAP

Uncertain

0.11

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Uncertain

-0.11

MutationAssessor

Pathogenic

3.0

M;M

PrimateAI

Benign

0.34

REVEL

Uncertain

0.46

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;D

Vest4

0.83

MVP

0.57

ClinPred

0.94

GERP RS

5.8

Varity_R

0.15

gMVP

0.82

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