rs369419645

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2PM5PP3_Moderate

The NM_001283009.2(RTEL1):​c.1648C>A​(p.Arg550Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000685 in 1,460,056 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R550C) has been classified as Likely pathogenic.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

RTEL1
NM_001283009.2 missense

Scores

7
8
4

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.29

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-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]

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PM5
Other missense variant is known to change same aminoacid residue: Variant chr20-63688312-C-T is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 422356.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.864

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RTEL1NM_001283009.2 linkc.1648C>A p.Arg550Ser missense_variant Exon 20 of 35 ENST00000360203.11 NP_001269938.1 Q9NZ71-6R4IXY3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RTEL1ENST00000360203.11 linkc.1648C>A p.Arg550Ser missense_variant Exon 20 of 35 5 NM_001283009.2 ENSP00000353332.5 Q9NZ71-6
RTEL1ENST00000508582.7 linkc.1720C>A p.Arg574Ser missense_variant Exon 20 of 35 2 ENSP00000424307.2 Q9NZ71-7
RTEL1ENST00000370018.7 linkc.1648C>A p.Arg550Ser missense_variant Exon 20 of 35 1 ENSP00000359035.3 Q9NZ71-1
RTEL1-TNFRSF6BENST00000492259.6 linkn.1732C>A non_coding_transcript_exon_variant Exon 18 of 35 5 ENSP00000457428.1 D6RA96

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD4 exome
AF:
6.85e-7
AC:
1
AN:
1460056
Hom.:
0
Cov.:
34
AF XY:
0.00000138
AC XY:
1
AN XY:
726330
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33478
American (AMR)
AF:
0.00
AC:
0
AN:
44708
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26128
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39698
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86256
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
51762
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5762
European-Non Finnish (NFE)
AF:
8.99e-7
AC:
1
AN:
1111896
Other (OTH)
AF:
0.00
AC:
0
AN:
60368
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.425
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
GnomAD4 genome
Cov.:
33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.86
BayesDel_addAF
Pathogenic
0.27
D
BayesDel_noAF
Pathogenic
0.14
CADD
Uncertain
23
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.83
D;.;.;.
Eigen
Uncertain
0.46
Eigen_PC
Uncertain
0.43
FATHMM_MKL
Benign
0.75
D
LIST_S2
Uncertain
0.92
D;D;D;D
M_CAP
Pathogenic
0.70
D
MetaRNN
Pathogenic
0.86
D;D;D;D
MetaSVM
Uncertain
0.64
D
MutationAssessor
Benign
1.7
L;.;L;.
PhyloP100
3.3
PrimateAI
Uncertain
0.72
T
PROVEAN
Uncertain
-3.6
D;D;D;.
REVEL
Pathogenic
0.74
Sift
Benign
0.066
T;D;D;.
Sift4G
Uncertain
0.048
D;D;D;D
Polyphen
1.0
D;D;P;.
Vest4
0.84
MutPred
0.47
Gain of catalytic residue at R550 (P = 0.0464);.;Gain of catalytic residue at R550 (P = 0.0464);.;
MVP
0.91
ClinPred
0.98
D
GERP RS
4.8
PromoterAI
0.049
Neutral
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.65
gMVP
0.80
Mutation Taster
=50/50

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

Publications

Other links and lift over

dbSNP: rs369419645; hg19: chr20-62319665; API