rs143550996
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong
The NM_001283009.2(RTEL1):c.959T>C(p.Met320Thr) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00154 in 1,612,424 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. M320V) has been classified as Uncertain significance.
Frequency
Consequence
NM_001283009.2 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
RTEL1 | NM_001283009.2 | c.959T>C | p.Met320Thr | missense_variant, splice_region_variant | 12/35 | ENST00000360203.11 | |
RTEL1-TNFRSF6B | NR_037882.1 | n.1786T>C | splice_region_variant, non_coding_transcript_exon_variant | 12/38 | |||
LOC124904954 | XR_007067717.1 | n.108A>G | non_coding_transcript_exon_variant | 1/2 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
RTEL1 | ENST00000360203.11 | c.959T>C | p.Met320Thr | missense_variant, splice_region_variant | 12/35 | 5 | NM_001283009.2 | A2 |
Frequencies
GnomAD3 genomes ? AF: 0.00107 AC: 163AN: 152042Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.00112 AC: 279AN: 249962Hom.: 0 AF XY: 0.00113 AC XY: 153AN XY: 135286
GnomAD4 exome AF: 0.00159 AC: 2317AN: 1460264Hom.: 4 Cov.: 36 AF XY: 0.00154 AC XY: 1115AN XY: 726126
GnomAD4 genome ? AF: 0.00107 AC: 163AN: 152160Hom.: 0 Cov.: 31 AF XY: 0.00116 AC XY: 86AN XY: 74388
ClinVar
Submissions by phenotype
not provided Uncertain:2
Uncertain significance, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Jul 01, 2022 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | GeneDx | Mar 02, 2021 | Identified in two individuals with suspected familial bone marrow failure, one with shortened telomeres that also carried a variant in TERT, and another with normal telomere length (Marsh 2018); In silico analysis supports that this missense variant does not alter protein structure/function; Also known as M320T (c.959T>C); This variant is associated with the following publications: (PMID: 29344583) - |
Dyskeratosis congenita Uncertain:1Benign:1
Uncertain significance, criteria provided, single submitter | curation | Sema4, Sema4 | Sep 23, 2021 | - - |
Likely benign, no assertion criteria provided | clinical testing | Natera, Inc. | Sep 16, 2020 | - - |
not specified Uncertain:1
Uncertain significance, no assertion criteria provided | clinical testing | Genetic Services Laboratory, University of Chicago | May 18, 2022 | DNA sequence analysis of the RTEL1 gene demonstrated a sequence change, c.1031T>C, in exon 12 that results in an amino acid change, p.Met344Thr (cDNA transcript used: NM_032957.4). This sequence change has been described in the gnomAD database with a frequency of 0.22% in the European Finnish subpopulation (dbSNP rs143550996). The p.Met344Thr change affects a poorly conserved amino acid residue located in a domain of the RTEL1 protein that is known to be functional. The p.Met344Thr substitution appears to be benign using several in-silico pathogenicity prediction tools (SIFT, PolyPhen2, Align GVGD, REVEL). This sequence change does not appear to have been previously described in individuals with RTEL1-related disorders. Due to insufficient evidences and the lack of functional studies, the clinical significance of the p.Met344Thr change remains unknown at this time. - |
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 31, 2024 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at