rs761907604

Variant names:

• chr20-63694442-C-A
• rs761907604
• NM_001283009.2:c.3063C>A
• RTEL1 p.His1021Gln

Your query was ambiguous. Multiple possible variants found:

• chr20-63694442-C-A
• chr20-63694442-C-T
• chr20-63694442-C-G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 0P and 2B. BP4_Moderate

The NM_001283009.2(RTEL1):​c.3063C>A​(p.His1021Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,612,132 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H1021L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 31)
  • Exomes 𝑓: 0.0000075 (0 hom.)
• Consequence: RTEL1 NM_001283009.2 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:4 B:1
• Conservation: PhyloP100: 0.574
• 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 -2 ACMG points.

• BP4: Computational evidence support a benign effect (MetaRNN=0.17424187).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001283009.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RTEL1	NM_001283009.2	MANE Select	c.3063C>A	p.His1021Gln	missense	Exon 31 of 35	NP_001269938.1	Q9NZ71-6
	RTEL1	NM_032957.5		c.3135C>A	p.His1045Gln	missense	Exon 31 of 35	NP_116575.3	Q9NZ71-7
	RTEL1	NM_016434.4		c.3063C>A	p.His1021Gln	missense	Exon 31 of 35	NP_057518.1	Q9NZ71-1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RTEL1	ENST00000360203.11	TSL:5 MANE Select	c.3063C>A	p.His1021Gln	missense	Exon 31 of 35	ENSP00000353332.5	Q9NZ71-6
	RTEL1	ENST00000508582.7	TSL:2	c.3135C>A	p.His1045Gln	missense	Exon 31 of 35	ENSP00000424307.2	Q9NZ71-7
	RTEL1	ENST00000370018.7	TSL:1	c.3063C>A	p.His1021Gln	missense	Exon 31 of 35	ENSP00000359035.3	Q9NZ71-1

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152218 Hom.: 0 Cov.: 31

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000386

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.0000324 AC: 8 AN: 246840 AF XY: 0.0000298

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000436

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000754 AC: 11 AN: 1459796 Hom.: 0 Cov.: 33 AF XY: 0.00000551 AC XY: 4 AN XY: 726056

African (AFR) AF: 0.00 AC: 0 AN: 33466

American (AMR) AF: 0.00 AC: 0 AN: 44706

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26120

East Asian (EAS) AF: 0.000202 AC: 8 AN: 39684

South Asian (SAS) AF: 0.00 AC: 0 AN: 86224

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52068

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1111422

Other (OTH) AF: 0.0000166 AC: 1 AN: 60342

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152336 Hom.: 0 Cov.: 31 AF XY: 0.0000269 AC XY: 2 AN XY: 74484

African (AFR) AF: 0.00 AC: 0 AN: 41582

American (AMR) AF: 0.00 AC: 0 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.000386 AC: 2 AN: 5176

South Asian (SAS) AF: 0.00 AC: 0 AN: 4826

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

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68020

Other (OTH) AF: 0.00 AC: 0 AN: 2116

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000227

ClinVar

ClinVar submissions

Significance: Conflicting classifications of pathogenicity

Revision: criteria provided, conflicting classifications

Pathogenic	VUS	Benign	Condition
-	1	-	Dyskeratosis congenita (1)
-	-	1	Dyskeratosis congenita, autosomal recessive 5;C4225346:Pulmonary fibrosis and/or bone marrow failure, Telomere-related, 3 (1)
-	1	-	Inborn genetic diseases (1)
-	1	-	not provided (1)
-	1	-	RTEL1-related disorder (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	13
DANN	Benign	0.97
DEOGEN2	Benign	0.22	T
Eigen	Benign	-0.48
Eigen_PC	Benign	-0.47
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.64	T
M_CAP	Uncertain	0.10	D
MetaRNN	Benign	0.17	T
MetaSVM	Benign	-0.74	T
MutationAssessor	Benign	1.8	L
PhyloP100		0.57
PrimateAI	Benign	0.38	T
PROVEAN	Uncertain	-2.5	N
REVEL	Uncertain	0.42
Sift	Benign	0.23	T
Sift4G	Benign	0.16	T
Varity_R		0.13
gMVP		0.29
Mutation Taster		=77/23	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs761907604;

hg19: chr20-62325795;