rs201351158

chr20-63694385-G-Achr20-63694385-G-Cchr20-63694385-G-T

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_Strong BP6_Very_Strong BP7

The NM_001283009.2(RTEL1):c.3006G>A(p.Pro1002=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000946 in 1,575,202 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 Likely benign (★★). Synonymous variant affecting the same amino acid position (i.e. P1002P) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00010 (0 hom., cov: 31)
  • Exomes 𝑓: 0.000094 (0 hom.)
• Consequence: RTEL1 NM_001283009.2 synonymous
• Clinical Significance: Likely benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -1.51

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-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]

ACMG classification

Verdict is Benign. Variant got -13 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BP6: Variant 20-63694385-G-A is Benign according to our data. Variant chr20-63694385-G-A is described in ClinVar as [Likely_benign]. Clinvar id is 540962.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BP7: Synonymous conserved (PhyloP=-1.51 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RTEL1	NM_001283009.2	c.3006G>A	p.Pro1002=	synonymous_variant	31/35	ENST00000360203.11
RTEL1-TNFRSF6B	NR_037882.1	n.3833G>A		non_coding_transcript_exon_variant	31/38

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RTEL1	ENST00000360203.11	c.3006G>A	p.Pro1002=	synonymous_variant	31/35	5	NM_001283009.2	A2

Frequencies

GnomAD3 genomes AF: 0.000100 AC: 15 AN: 149476 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.0000977

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000266

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000204

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000892

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000121 AC: 30 AN: 247034 Hom.: 0 AF XY: 0.000171 AC XY: 23 AN XY: 134466

Gnomad AFR exome AF: 0.0000624

Gnomad AMR exome AF: 0.000203

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000109

Gnomad SAS exome AF: 0.000196

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000127

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000940 AC: 134 AN: 1425604 Hom.: 0 Cov.: 33 AF XY: 0.000100 AC XY: 71 AN XY: 708600

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.000138

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000269

Gnomad4 SAS exome AF: 0.000198

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000974

Gnomad4 OTH exome AF: 0.0000688

GnomAD4 genome AF: 0.000100 AC: 15 AN: 149598 Hom.: 0 Cov.: 31 AF XY: 0.0000547 AC XY: 4 AN XY: 73094

Gnomad4 AFR AF: 0.0000974

Gnomad4 AMR AF: 0.000266

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000204

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000892

Gnomad4 OTH AF: 0.00

Alfa AF: 0.0000993 Hom.: 0

Bravo AF: 0.0000869

EpiCase AF: 0.000218

EpiControl AF: 0.000356

ClinVar

Significance: Likely benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Feb 13, 2020	See Variant Classification Assertion Criteria. -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jan 01, 2024	RTEL1: BP4, BP7 -

Dyskeratosis congenita, autosomal recessive 5;C4225346:Pulmonary fibrosis and/or bone marrow failure, Telomere-related, 3 Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 11, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
Cadd	Benign	1.2
Dann	Benign	0.64

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: rs201351158; hg19: chr20-62325738;