rs145910245
Variant summary
Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2
The NM_000069.3(CACNA1S):c.4060A>T(p.Thr1354Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00484 in 1,614,210 control chromosomes in the GnomAD database, including 34 homozygotes. In-silico tool predicts a benign outcome for this variant. 12/21 in silico tools predict a benign outcome for this variant. 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. T1354I) has been classified as Uncertain significance.
Frequency
Consequence
NM_000069.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Benign. Variant got -13 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CACNA1S | NM_000069.3 | c.4060A>T | p.Thr1354Ser | missense_variant | 33/44 | ENST00000362061.4 | |
CACNA1S | XM_005245478.4 | c.4003A>T | p.Thr1335Ser | missense_variant | 32/43 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CACNA1S | ENST00000362061.4 | c.4060A>T | p.Thr1354Ser | missense_variant | 33/44 | 1 | NM_000069.3 | P2 |
Frequencies
GnomAD3 genomes ? AF: 0.00336 AC: 511AN: 152224Hom.: 1 Cov.: 33
GnomAD3 exomes AF: 0.00264 AC: 663AN: 251492Hom.: 1 AF XY: 0.00260 AC XY: 353AN XY: 135920
GnomAD4 exome AF: 0.00499 AC: 7295AN: 1461868Hom.: 33 Cov.: 35 AF XY: 0.00473 AC XY: 3441AN XY: 727234
GnomAD4 genome ? AF: 0.00335 AC: 511AN: 152342Hom.: 1 Cov.: 33 AF XY: 0.00323 AC XY: 241AN XY: 74498
ClinVar
Submissions by phenotype
not provided Uncertain:2Benign:2
Likely benign, criteria provided, single submitter | clinical testing | GeneDx | Sep 16, 2021 | This variant is associated with the following publications: (PMID: 32222817, 29193480, 29212769, 27153395, 27181684, 28011884, 20861472, 24784157, 24055113, 25735680, 25637381, 24195946, 26332594, 27147545) - |
Uncertain significance, criteria provided, single submitter | clinical testing | Athena Diagnostics | Jan 07, 2019 | - - |
Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Oct 19, 2016 | Variant summary: The CACNA1S c.4060A>T (p.Thr1354Ser) variant involves the alteration of a conserved nucleotide. 3/4 in silico tools predict a benign outcome for this variant (SNPs&GO not captured due to low reliability index). This variant was found in 287/121696 control chromosomes, predominantly observed in the European (Non-Finnish) subpopulation at a frequency of 0.0037758 (252/66740). This frequency is about 604 times the estimated maximal expected allele frequency of a pathogenic CACNA1S variant (0.0000063), suggesting this is likely a benign polymorphism found primarily in the populations of European (Non-Finnish) origin. The variant was initially considered pathogenic based on a publication showing segregation of the variant in an affected family, absence in 268 control chromosomes, and functional data demonstrating abnormal Ca++ flux (Pirone_2010). Based on this evidence, Lawrence_2013 listed the variant of interest as a reportable incidental finding in exome sequencing cases. However, the high frequency of this variant in the general population puts into question the true pathogenicity of the variant. In addition, multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. Taken together, this variant is classified as a VUS until additional evidence becomes available. - |
Likely benign, criteria provided, single submitter | clinical testing | CeGaT Center for Human Genetics Tuebingen | Mar 01, 2024 | CACNA1S: BS2 - |
Malignant hyperthermia, susceptibility to, 5 Benign:2
Likely benign, criteria provided, single submitter | clinical testing | Color Diagnostics, LLC DBA Color Health | Sep 20, 2022 | - - |
Benign, criteria provided, single submitter | clinical testing | Molecular Genetics, Royal Melbourne Hospital | Oct 30, 2020 | This sequence change is predicted to replace threonine with serine at codon 1354 of the CACNA1S protein (p.(Thr1354Ser)). The threonine residue is conserved to fish species, which also have a serine residue at codon 1354 (100 vertebrates, UCSC). The variant is located in the extracellular portion of an ion transporter domain. There is a small physicochemical difference between threonine and serine. The variant is present in a large population cohort at a frequency of 0.52% in the European (non-Finnish) population (rs1145910245, gnomAD v3.0). This variant has been reported in a multigenerational family of individuals who were malignant hyperthermia susceptible (PMID: 20861472) and in two unrelated individuals in an Australian cohort, one of which also had a variant in RYR1 (PMID: 25735680). Patch-clamp analyses demonstrate accelerated inward Ca2+ current and increased sensitisation of RYR1 under caffeine exposure in a transfection model. Multiple lines of computational evidence have conflicting predictions for the missense substitution (4/6 algorithms predicting benign/neutral effect, 2/6 algorithms predicting deleterious effect). Based on the classification guidelines RMH Modified ACMG Guidelines v1.3.0, this variant is classified as BENIGN. The following criteria are met: BA1, PP1_Moderate. - |
not specified Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine | Apr 25, 2016 | Variant identified in a genome or exome case(s) and assessed due to predicted null impact of the variant or pathogenic assertions in the literature or databases. Disclaimer: This variant has not undergone full assessment. The following are preliminary notes: ExAC: 0.4% (252/66740) Europeans. Classified as VUS in 3 papers (7 total papers in HGMD) - |
Malignant hyperthermia, susceptibility to, 1 Uncertain:1
Uncertain significance, no assertion criteria provided | research | CSER _CC_NCGL, University of Washington | Jun 01, 2014 | - - |
CACNA1S-related disorder Benign:1
Likely benign, criteria provided, single submitter | clinical testing | PreventionGenetics, part of Exact Sciences | Feb 16, 2023 | This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). - |
Malignant hyperthermia, susceptibility to, 5;C3714580:Hypokalemic periodic paralysis, type 1 Benign:1
Likely benign, criteria provided, single submitter | clinical testing | Invitae | Jan 29, 2024 | - - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at