ENST00000602385.3:n.35C>A

Variant names:

• chr3-169765026-G-T
• rs199422260
• ENST00000602385.3:n.35C>A

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000602385.3(TERC):​n.35C>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000326 in 612,904 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: not found (cov: 33)
  • Exomes 𝑓: 0.0000033 (0 hom.)
• Consequence: TERC ENST00000602385.3 non_coding_transcript_exon
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:2
• Conservation: PhyloP100: -2.13
• Publications: 5 publications found

Genes affected

TERC (HGNC:11727): (telomerase RNA component) 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, and an RNA component, encoded by this gene, that 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. Mutations in this gene cause autosomal dominant dyskeratosis congenita, and may also be associated with some cases of aplastic anemia. [provided by RefSeq, Jul 2008]

TERC Gene-Disease associations (from GenCC):

• dyskeratosis congenita, autosomal dominant 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), ClinGen, PanelApp Australia, G2P, Ambry Genetics
• acute myeloid leukemia

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp

ENSG00000296372 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000602385.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TERC	NR_001566.3	MANE Select	n.35C>A		non_coding_transcript_exon	Exon 1 of 1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TERC	ENST00000602385.3	TSL:6 MANE Select	n.35C>A		non_coding_transcript_exon	Exon 1 of 1
	ENSG00000296372	ENST00000738610.1		n.641G>T		non_coding_transcript_exon	Exon 1 of 1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000326 AC: 2 AN: 612904 Hom.: 0 Cov.: 0 AF XY: 0.00000597 AC XY: 2 AN XY: 334988

African (AFR) AF: 0.0000566 AC: 1 AN: 17676

American (AMR) AF: 0.00 AC: 0 AN: 43732

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 20974

East Asian (EAS) AF: 0.00 AC: 0 AN: 36062

South Asian (SAS) AF: 0.00 AC: 0 AN: 69798

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 37750

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4118

European-Non Finnish (NFE) AF: 0.00000286 AC: 1 AN: 349828

Other (OTH) AF: 0.00 AC: 0 AN: 32966

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Dyskeratosis congenita, autosomal dominant 1 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	1.9
DANN	Benign	0.68
PhyloP100		-2.1
RBP_binding_hub_radar		1.0
RBP_regulation_power_radar		3.6

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs199422260; hg19: chr3-169482814;