rs186849858

chr5-1258529-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_198253.3(TERT):c.3032+69G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000592 in 1,418,264 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: 𝑓 0.00022 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000040 (0 hom.)
• Consequence: TERT NM_198253.3 intron
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -1.52

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]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.96).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TERT	NM_198253.3	c.3032+69G>A		intron_variant		ENST00000310581.10
TERT	NM_001193376.3	c.2843+69G>A		intron_variant
TERT	NR_149162.3	n.2740+69G>A		intron_variant, non_coding_transcript_variant
TERT	NR_149163.3	n.2704+69G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TERT	ENST00000310581.10	c.3032+69G>A		intron_variant		1	NM_198253.3	P2

Frequencies

GnomAD3 genomes AF: 0.000217 AC: 33 AN: 152220 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000651

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000294

Gnomad OTH AF: 0.000955

GnomAD4 exome AF: 0.0000403 AC: 51 AN: 1265926 Hom.: 0 AF XY: 0.0000507 AC XY: 32 AN XY: 631228

Gnomad4 AFR exome AF: 0.000657

Gnomad4 AMR exome AF: 0.0000563

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000570

Gnomad4 SAS exome AF: 0.000209

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000115

Gnomad4 OTH exome AF: 0.0000186

GnomAD4 genome AF: 0.000217 AC: 33 AN: 152338 Hom.: 0 Cov.: 33 AF XY: 0.000215 AC XY: 16 AN XY: 74496

Gnomad4 AFR AF: 0.000649

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000193

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000294

Gnomad4 OTH AF: 0.000945

Alfa AF: 0.0000712 Hom.: 0

Bravo AF: 0.000208

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Apr 22, 2015

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
Cadd	Benign	0.21
Dann	Benign	0.59

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

Other links and lift over

dbSNP: rs186849858; hg19: chr5-1258644;