chr20-63695520-C-T

Position:

chr20-63695520-C-T

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBS1BS2

The NM_001283009.2(RTEL1):c.3692C>T(p.Thr1231Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00101 in 1,612,090 control chromosomes in the GnomAD database, including 13 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/14 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.0053 ( 6 hom., cov: 33)

Exomes 𝑓: 0.00055 ( 7 hom. )

Consequence

RTEL1
NM_001283009.2 missense

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:2

Conservation

PhyloP100: -7.25

Variant links:

Genes affected

RTEL1 (HGNC:15888): (regulator of telomere elongation helicase 1) This gene encodes a DNA helicase which functions in the stability, protection and elongation of telomeres and interacts with proteins in the shelterin complex known to protect telomeres during DNA replication. Mutations in this gene have been associated with dyskeratosis congenita and Hoyerall-Hreidarsson syndrome. Read-through transcription of this gene into the neighboring downstream gene, which encodes tumor necrosis factor receptor superfamily, member 6b, generates a non-coding transcript. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Sep 2013]

RTEL1 links:

RTEL1-TNFRSF6B (HGNC:44095): (RTEL1-TNFRSF6B readthrough (NMD candidate)) This locus represents naturally occurring read-through transcription between the neighboring RTEL1 (regulator of telomere elongation helicase 1) and TNFRSF6B (tumor necrosis factor receptor superfamily, member 6b, decoy) genes on chromosome 20. The read-through transcript is a candidate for nonsense-mediated mRNA decay (NMD), and is unlikely to produce a protein product. [provided by RefSeq, Feb 2011]

RTEL1-TNFRSF6B links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -20 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.0030531585).

BP6

Variant 20-63695520-C-T is Benign according to our data. Variant chr20-63695520-C-T is described in ClinVar as [Benign]. Clinvar id is 540956.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr20-63695520-C-T is described in Lovd as [Benign].

BS1

Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00534 (813/152308) while in subpopulation AFR AF= 0.0184 (765/41560). AF 95% confidence interval is 0.0173. There are 6 homozygotes in gnomad4. There are 391 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.

BS2

High Homozygotes in GnomAd4 at 6 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RTEL1	NM_001283009.2 linkuse as main transcript	c.3692C>T	p.Thr1231Met	missense_variant	34/35	ENST00000360203.11	NP_001269938.1
RTEL1-TNFRSF6B	NR_037882.1 linkuse as main transcript	n.4519C>T		non_coding_transcript_exon_variant	34/38

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RTEL1	ENST00000360203.11 linkuse as main transcript	c.3692C>T	p.Thr1231Met	missense_variant	34/35	5	NM_001283009.2	ENSP00000353332	A2	Q9NZ71-6

Frequencies

GnomAD3 genomes

AF:

0.00532

AC:

809

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0184

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00235

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000414

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00382

GnomAD3 exomes

AF:

0.00129

AC:

317

AN:

245850

Hom.:

AF XY:

0.000916

AC XY:

123

AN XY:

134232

show subpopulations

Gnomad AFR exome

AF:

0.0182

Gnomad AMR exome

AF:

0.000725

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000196

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000455

Gnomad OTH exome

AF:

0.000166

GnomAD4 exome

AF:

0.000554

AC:

808

AN:

1459782

Hom.:

Cov.:

AF XY:

0.000485

AC XY:

352

AN XY:

726186

show subpopulations

Gnomad4 AFR exome

AF:

0.0184

Gnomad4 AMR exome

AF:

0.000873

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000244

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000594

Gnomad4 OTH exome

AF:

0.00101

GnomAD4 genome

AF:

0.00534

AC:

813

AN:

152308

Hom.:

Cov.:

AF XY:

0.00525

AC XY:

391

AN XY:

74482

show subpopulations

Gnomad4 AFR

AF:

0.0184

Gnomad4 AMR

AF:

0.00235

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.000415

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000294

Gnomad4 OTH

AF:

0.00378

Alfa

AF:

0.00250

Hom.:

Bravo

AF:

0.00560

ESP6500AA

AF:

0.0176

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.00165

AC:

198

Asia WGS

AF:

0.000577

AC:

AN:

3478

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000119

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:1

Benign, criteria provided, single submitter

not provided

Breakthrough Genomics, Breakthrough Genomics

- -

Dyskeratosis congenita, autosomal recessive 5;C4225346:Pulmonary fibrosis and/or bone marrow failure, Telomere-related, 3

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 31, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Benign

-0.57

BayesDel_noAF

Benign

-0.57

CADD

Benign

0.18

DANN

Benign

0.56

Eigen

Benign

-1.9

Eigen_PC

Benign

-2.1

FATHMM_MKL

Benign

0.015

LIST_S2

Benign

0.29

MetaRNN

Benign

0.0031

MetaSVM

Benign

-0.99

MutationTaster

Benign

1.0

N;N;N;N;N

PROVEAN

Benign

-0.48

REVEL

Benign

0.087

Sift

Benign

0.23

Sift4G

Benign

0.34

Polyphen

0.0010

Vest4

0.11

MVP

0.22

ClinPred

0.0084

GERP RS

-5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

gMVP

0.22

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.040

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over