14-20371622-T-C

Position:

• chr14-20371622-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_007110.5(TEP1):​c.7087A>G​(p.Asn2363Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000211 in 1,425,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: TEP1 NM_007110.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.04

Genes affected

TEP1 (HGNC:11726): (telomerase associated protein 1) This gene product is a component of the ribonucleoprotein complex responsible for telomerase activity which catalyzes the addition of new telomeres on the chromosome ends. The telomerase-associated proteins are conserved from ciliates to humans. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21002755).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
TEP1	NM_007110.5	c.7087A>G	p.Asn2363Asp	missense_variant	50/55	ENST00000262715.10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
TEP1	ENST00000262715.10	c.7087A>G	p.Asn2363Asp	missense_variant	50/55	1	NM_007110.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000211 AC: 3 AN: 1425076 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 708246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000272

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000662 Hom.: 0

Bravo AF: 0.00000756

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

Ambry Genetics

Aug 04, 2023

The c.7087A>G (p.N2363D) alteration is located in exon 50 (coding exon 49) of the TEP1 gene. This alteration results from a A to G substitution at nucleotide position 7087, causing the asparagine (N) at amino acid position 2363 to be replaced by an aspartic acid (D). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	19
DANN	Uncertain	1.0
DEOGEN2	Benign	0.093	T;T
Eigen	Benign	-0.15
Eigen_PC	Benign	-0.0059
FATHMM_MKL	Benign	0.62	D
LIST_S2	Benign	0.71	T;T
M_CAP	Benign	0.0059	T
MetaRNN	Benign	0.21	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.8	L;.
MutationTaster	Benign	0.94	N;N;N
PrimateAI	Benign	0.34	T
PROVEAN	Benign	-1.2	N;N
REVEL	Benign	0.065
Sift	Benign	0.23	T;T
Sift4G	Benign	0.54	T;T
Polyphen		0.46	P;P
Vest4		0.23
MVP		0.43
MPC		0.13
ClinPred		0.70	D
GERP RS		5.4
Varity_R		0.088
gMVP		0.27

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.080		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: rs1054114090; hg19: chr14-20839781;