20-63688613-C-T

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_StrongBP6_Moderate

The NM_001283009.2(RTEL1):c.1800+8C>T variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000244 in 1,601,286 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000021 ( 0 hom. )

Consequence

RTEL1
NM_001283009.2 splice_region, intron

Scores

Splicing: ADA: 0.00008640

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.0280

Publications

0 publications found

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 was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.86).

BP6

Variant 20-63688613-C-T is Benign according to our data. Variant chr20-63688613-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 473910.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 link	c.1800+8C>T		splice_region_variant, intron_variant	Intron 21 of 34	ENST00000360203.11	NP_001269938.1

Ensembl

Gene	Transcript	HGVSc	Effect	Exon rank	TSL	MANE	Protein
RTEL1	ENST00000360203.11 link	c.1800+8C>T	splice_region_variant, intron_variant	Intron 21 of 34	5	NM_001283009.2	ENSP00000353332.5
RTEL1	ENST00000508582.7 link	c.1872+8C>T	splice_region_variant, intron_variant	Intron 21 of 34	2		ENSP00000424307.2
RTEL1	ENST00000370018.7 link	c.1800+8C>T	splice_region_variant, intron_variant	Intron 21 of 34	1		ENSP00000359035.3
RTEL1-TNFRSF6B	ENST00000492259.6 link	n.1884+8C>T	splice_region_variant, intron_variant	Intron 19 of 34	5		ENSP00000457428.1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152262

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.00

Gnomad NFE

AF:

0.000103

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000133

AC:

AN:

224776

AF XY:

0.00000818

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000297

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000207

AC:

AN:

1449024

Hom.:

Cov.:

AF XY:

0.0000250

AC XY:

AN XY:

719948

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33366

American (AMR)

AF:

0.00

AC:

AN:

43022

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25796

East Asian (EAS)

AF:

0.00

AC:

AN:

39370

South Asian (SAS)

AF:

0.00

AC:

AN:

84468

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49696

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5434

European-Non Finnish (NFE)

AF:

0.0000271

AC:

AN:

1107912

Other (OTH)

AF:

0.00

AC:

AN:

59960

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.487

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152262

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74384

show subpopulations

African (AFR)

AF:

0.0000482

AC:

AN:

41472

American (AMR)

AF:

0.00

AC:

AN:

15290

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5196

South Asian (SAS)

AF:

0.00

AC:

AN:

4836

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10630

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000103

AC:

AN:

68046

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.536

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000134

Hom.:

Bravo

AF:

0.0000793

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

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

Benign:1

Dec 31, 2024

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

-0.86

CADD

Benign

0.72

(source)

DANN

Benign

0.71

PhyloP100

0.028

PromoterAI

0.042

Neutral

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000086

dbscSNV1_RF

Benign

0.0060

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over