rs1553915647

Variant names:

• chr3-169765188-T-TA
• rs1553915647
• ENST00000738610.1:n.806dupA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The ENST00000738610.1(ENSG00000296372):​n.806dupA 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 0.00000182 in 550,832 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000018 (0 hom.)
• Consequence: ENSG00000296372 ENST00000738610.1 non_coding_transcript_exon
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.321
• Publications: 0 publications found

Genes affected

ENSG00000296372 (HGNC:):

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

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000738610.1. 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.-129_-128insT		upstream_gene	N/A

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ENSG00000296372	ENST00000738610.1		n.806dupA		non_coding_transcript_exon	Exon 1 of 1
	TERC	ENST00000602385.3	TSL:6 MANE Select	n.-129dupT		upstream_gene	N/A

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000182 AC: 1 AN: 550832 Hom.: 0 Cov.: 0 AF XY: 0.00000337 AC XY: 1 AN XY: 297058

African (AFR) AF: 0.00 AC: 0 AN: 16576

American (AMR) AF: 0.00 AC: 0 AN: 34366

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19902

East Asian (EAS) AF: 0.00 AC: 0 AN: 33636

South Asian (SAS) AF: 0.00 AC: 0 AN: 62824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 34018

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2972

European-Non Finnish (NFE) AF: 0.00000316 AC: 1 AN: 316158

Other (OTH) AF: 0.00 AC: 0 AN: 30380

GnomAD4 genome Cov.: 32

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.32

Splicing

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

Other links and lift over

dbSNP: rs1553915647; hg19: chr3-169482976;