rs376698655

Variant names:

• chr20-63687625-C-G
• rs376698655
• NM_001283009.2:c.1349-13C>G

Your query was ambiguous. Multiple possible variants found:

• chr20-63687625-C-G
• chr20-63687625-C-T

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 2P and 6B. PM2 BP4_Strong BP6_Moderate

The NM_001283009.2(RTEL1):​c.1349-13C>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000691 in 1,446,298 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 (★).

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: RTEL1 NM_001283009.2 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.51
• Publications: 0 publications found

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

Our verdict: Likely_benign. The variant received -4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BP6: Variant 20-63687625-C-G is Benign according to our data. Variant chr20-63687625-C-G is described in ClinVar as Likely_benign. ClinVar VariationId is 1650818.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RTEL1	NM_001283009.2	c.1349-13C>G		intron_variant	Intron 16 of 34	ENST00000360203.11	NP_001269938.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RTEL1	ENST00000360203.11	c.1349-13C>G		intron_variant	Intron 16 of 34	5	NM_001283009.2	ENSP00000353332.5
RTEL1	ENST00000508582.7	c.1421-13C>G		intron_variant	Intron 16 of 34	2		ENSP00000424307.2
RTEL1	ENST00000370018.7	c.1349-13C>G		intron_variant	Intron 16 of 34	1		ENSP00000359035.3
RTEL1-TNFRSF6B	ENST00000492259.6	n.1433-13C>G		intron_variant	Intron 14 of 34	5		ENSP00000457428.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152244 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

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: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 6.91e-7 AC: 1 AN: 1446298 Hom.: 0 Cov.: 32 AF XY: 0.00000139 AC XY: 1 AN XY: 718442

African (AFR) AF: 0.00 AC: 0 AN: 33214

American (AMR) AF: 0.00 AC: 0 AN: 43736

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25424

East Asian (EAS) AF: 0.00 AC: 0 AN: 39532

South Asian (SAS) AF: 0.00 AC: 0 AN: 84598

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 50748

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4102

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1105334

Other (OTH) AF: 0.0000168 AC: 1 AN: 59610

GnomAD4 genome Data not reliable, filtered out with message: AS_VQSR AF: 0.00000656 AC: 1 AN: 152362 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74498

African (AFR) AF: 0.00 AC: 0 AN: 41586

American (AMR) AF: 0.00 AC: 0 AN: 15314

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4834

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00340 AC: 1 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2114

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

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

Dec 13, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	0.25
DANN	Benign	0.58
PhyloP100		-1.5
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.2

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		Details are displayed if max score is > 0.2

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

Other links and lift over

dbSNP: rs376698655; hg19: chr20-62318978;