rs1554043028

Variant names:

Your query was ambiguous. Multiple possible variants found:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_198253.3(TERT):c.652G>T(p.Ala218Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000696 in 1,435,862 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A218V) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

TERT
NM_198253.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.425

Publications

0 publications found

Variant links:

Genes affected

TERT (HGNC:11730): (telomerase reverse transcriptase) Telomerase is a ribonucleoprotein polymerase that maintains telomere ends by addition of the telomere repeat TTAGGG. The enzyme consists of a protein component with reverse transcriptase activity, encoded by this gene, and an RNA component which serves as a template for the telomere repeat. Telomerase expression plays a role in cellular senescence, as it is normally repressed in postnatal somatic cells resulting in progressive shortening of telomeres. Deregulation of telomerase expression in somatic cells may be involved in oncogenesis. Studies in mouse suggest that telomerase also participates in chromosomal repair, since de novo synthesis of telomere repeats may occur at double-stranded breaks. Alternatively spliced variants encoding different isoforms of telomerase reverse transcriptase have been identified; the full-length sequence of some variants has not been determined. Alternative splicing at this locus is thought to be one mechanism of regulation of telomerase activity. [provided by RefSeq, Jul 2008]

TERT Gene-Disease associations (from GenCC):

pulmonary fibrosis and/or bone marrow failure, Telomere-related, 1
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
dyskeratosis congenita, autosomal dominant 2
Inheritance: AR, AD, SD, Unknown Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, Laboratory for Molecular Medicine
acute myeloid leukemia
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Genomics England PanelApp
dyskeratosis congenita
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Hoyeraal-Hreidarsson syndrome
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
melanoma, cutaneous malignant, susceptibility to, 9
Inheritance: AD Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

TERT links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.086526155).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
TERT	NM_198253.3 link	c.652G>T	p.Ala218Ser	missense_variant	Exon 2 of 16	ENST00000310581.10	NP_937983.2	O14746-1
TERT	NM_001193376.3 link	c.652G>T	p.Ala218Ser	missense_variant	Exon 2 of 15		NP_001180305.1	O14746-3
TERT	NR_149162.3 link	n.731G>T		non_coding_transcript_exon_variant	Exon 2 of 13
TERT	NR_149163.3 link	n.731G>T		non_coding_transcript_exon_variant	Exon 2 of 13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
TERT	ENST00000310581.10 link	c.652G>T	p.Ala218Ser	missense_variant	Exon 2 of 16	1	NM_198253.3	ENSP00000309572.5	O14746-1
TERT	ENST00000334602.10 link	c.652G>T	p.Ala218Ser	missense_variant	Exon 2 of 15	1		ENSP00000334346.6	O14746-3
TERT	ENST00000460137.6 link	n.652G>T		non_coding_transcript_exon_variant	Exon 2 of 13	1		ENSP00000425003.1	O14746-4
TERT	ENST00000656021.1 link	n.652G>T		non_coding_transcript_exon_variant	Exon 2 of 17			ENSP00000499759.1	A0A590UK92

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.96e-7

AC:

AN:

1435862

Hom.:

Cov.:

AF XY:

0.00000140

AC XY:

AN XY:

713908

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33136

American (AMR)

AF:

0.00

AC:

AN:

43496

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25794

East Asian (EAS)

AF:

0.00

AC:

AN:

38788

South Asian (SAS)

AF:

0.00

AC:

AN:

84424

European-Finnish (FIN)

AF:

0.00

AC:

AN:

39638

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5728

European-Non Finnish (NFE)

AF:

9.05e-7

AC:

AN:

1105298

Other (OTH)

AF:

0.00

AC:

AN:

59560

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.225

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.086

BayesDel_addAF

Benign

-0.057

BayesDel_noAF

Benign

-0.32

CADD

Benign

0.63

(source)

DANN

Benign

0.55

DEOGEN2

Benign

0.30

T;.

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.040

LIST_S2

Benign

0.59

T;T

M_CAP

Pathogenic

0.61

MetaRNN

Benign

0.087

T;T

MetaSVM

Uncertain

-0.030

MutationAssessor

Benign

0.17

N;N

PhyloP100

-0.42

PrimateAI

Uncertain

0.55

PROVEAN

Benign

0.28

N;N

REVEL

Benign

0.22

Sift

Benign

0.94

T;T

Sift4G

Benign

0.79

T;T

Polyphen

0.0040

B;B

Vest4

0.085

MutPred

0.14

Gain of glycosylation at A218 (P = 0.0142);Gain of glycosylation at A218 (P = 0.0142);

MVP

0.59

MPC

0.96

ClinPred

0.025

GERP RS

-0.22

Varity_R

0.078

gMVP

0.46

Mutation Taster

=85/15

polymorphism

(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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over