ENST00000602385.3:n.280G>C

Variant names:

• chr3-169764781-C-G
• rs776511480
• ENST00000602385.3:n.280G>C

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 0P and 3B. BP4_Moderate BS2_Supporting

The ENST00000602385.3(TERC):​n.280G>C 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 0.0000176 in 740,124 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 0.000020 (0 hom., cov: 33)
  • Exomes 𝑓: 0.000017 (0 hom.)
• Consequence: TERC ENST00000602385.3 non_coding_transcript_exon
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.92
• Publications: 1 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 -3 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.28).
• BS2: High AC in GnomAdExome4 at 10 AD gene. Variant has AC lower than other variant known as pathogenic in the gene, so the strength is limited to Supporting.

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.280G>C		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.280G>C		non_coding_transcript_exon	Exon 1 of 1
	ENSG00000296372	ENST00000738610.1		n.396C>G		non_coding_transcript_exon	Exon 1 of 1

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 3 AN: 152246 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000196

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000495 AC: 9 AN: 181754 AF XY: 0.0000497

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000240

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000248

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000170 AC: 10 AN: 587760 Hom.: 0 Cov.: 0 AF XY: 0.0000187 AC XY: 6 AN XY: 320042

African (AFR) AF: 0.00 AC: 0 AN: 17168

American (AMR) AF: 0.000201 AC: 8 AN: 39880

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 20458

East Asian (EAS) AF: 0.00 AC: 0 AN: 34780

South Asian (SAS) AF: 0.00 AC: 0 AN: 67030

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 35518

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3904

European-Non Finnish (NFE) AF: 0.00000593 AC: 2 AN: 337128

Other (OTH) AF: 0.00 AC: 0 AN: 31894

GnomAD4 genome AF: 0.0000197 AC: 3 AN: 152364 Hom.: 0 Cov.: 33 AF XY: 0.0000403 AC XY: 3 AN XY: 74514

African (AFR) AF: 0.00 AC: 0 AN: 41590

American (AMR) AF: 0.000196 AC: 3 AN: 15314

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5182

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10632

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68026

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Dyskeratosis congenita, autosomal dominant 1 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.28
CADD	Benign	19
DANN	Benign	0.72
PhyloP100		1.9

Splicing

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

Other links and lift over

dbSNP: rs776511480; hg19: chr3-169482569;