chr8-73027123-C-T

Position:

• chr8-73027123-C-T

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BA1

The NM_017489.3(TERF1):​c.887+71C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00342 in 1,073,736 control chromosomes in the GnomAD database, including 88 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.016 (59 hom., cov: 32)
  • Exomes 𝑓: 0.0014 (29 hom.)
• Consequence: TERF1 NM_017489.3 intron
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 0.0330

Genes affected

TERF1 (HGNC:11728): (telomeric repeat binding factor 1) This gene encodes a telomere specific protein which is a component of the telomere nucleoprotein complex. This protein is present at telomeres throughout the cell cycle and functions as an inhibitor of telomerase, acting in cis to limit the elongation of individual chromosome ends. The protein structure contains a C-terminal Myb motif, a dimerization domain near its N-terminus and an acidic N-terminus. Multiple transcripts of this gene are alternatively spliced products. [provided by RefSeq, Aug 2022]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).
• BP6: Variant 8-73027123-C-T is Benign according to our data. Variant chr8-73027123-C-T is described in ClinVar as [Benign]. Clinvar id is 1174354.Status of the report is criteria_provided_single_submitter, 1 stars.
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.0529 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TERF1	NM_017489.3	c.887+71C>T		intron_variant		ENST00000276603.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TERF1	ENST00000276603.10	c.887+71C>T		intron_variant		1	NM_017489.3	P4

Frequencies

GnomAD3 genomes AF: 0.0157 AC: 2384 AN: 152008 Hom.: 59 Cov.: 32

Gnomad AFR AF: 0.0550

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00524

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.0110

GnomAD4 exome AF: 0.00140 AC: 1286 AN: 921612 Hom.: 29 AF XY: 0.00117 AC XY: 550 AN XY: 470110

Gnomad4 AFR exome AF: 0.0521

Gnomad4 AMR exome AF: 0.00277

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000480

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000309

Gnomad4 OTH exome AF: 0.00287

GnomAD4 genome AF: 0.0157 AC: 2382 AN: 152124 Hom.: 59 Cov.: 32 AF XY: 0.0151 AC XY: 1122 AN XY: 74360

Gnomad4 AFR AF: 0.0548

Gnomad4 AMR AF: 0.00524

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000736

Gnomad4 OTH AF: 0.0109

Alfa AF: 0.0132 Hom.: 4

Bravo AF: 0.0180

Asia WGS AF: 0.00347 AC: 14 AN: 3468

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Jun 21, 2019

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	1.4
DANN	Benign	0.36

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: rs55644413; hg19: chr8-73939358;