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Variant interpretation report

RYR1 c.7300G>A, p.Gly2434Arg

NM_000540.3:c.7300G>A NP_000531.2:p.(Gly2434Arg) Missense · exon 45 View identifiers
Classification
Likely pathogenic

Variant description:

The RYR1 NM_000540.3:c.7300G>A (NP_000531.2:p.(Gly2434Arg)) missense variant has previously been reported in somatic cancers (COSMIC; COSV62092833, n = 4 times). Based on available guidelines, this variant is considered to be Likely Pathogenic. This variant is considered to be drug response by the VCEP (ClinPGx; ClinVar ID 12970).

Five-step scale from benign to pathogenic. This variant is likely pathogenic. Select a step to read what it means.

Likely pathogenic.A likely pathogenic classification under the recorded framework.

In plain language

Gene-level background from the recorded interpretation.

About RYR1

RYR1 encodes a calcium-release channel in skeletal muscle that helps connect the sarcoplasmic reticulum with the transverse tubules and regulate muscle contraction. Changes in RYR1 are associated with malignant hyperthermia susceptibility, central core disease, and minicore myopathy with external ophthalmoplegia; it has no established cancer role.

LYFE Sciences is an AI system, and it can make mistakes. Criteria may be applied incorrectly, sources may be misread, and a confident-looking classification can still be wrong. Double-check every criterion and its underlying evidence before relying on any call.
01The reasoning

How it was classified

The recorded framework is ClinGen RYR1 VCEP v2.0. The criteria and strengths shown below come from the saved assessment; this page does not recalculate the classification.

Recorded applied criteria

The applied criteria and their strengths are shown as assessed under the stated framework.

Pathogenic evidence criteria: 4 Benign evidence criteria: 0
Pathogenic criteria applied · 4
PS4Strong
PS4 · strong

Met at strong: 7 MH case points and computed OR 738.94 (95% CI 337.82–1,616.35) exceed the VCEP's >=18.7 threshold with popmax FAF 0.00010959 <0.0038.

PM1Moderate
PM1 · moderate

Met at moderate: residue 2434 lies within the VCEP-approved central PM1 region 2,101-2,458, and PS1 or PM5 is not applied.

PP3Moderate
PP3 · moderate

Met (moderate): REVEL 0.965 exceeds the VCEP's >0.85 threshold for computational evidence supporting a deleterious effect.

PP5Supporting
PP5 · supporting

Not applicable: the RYR1 VCEP explicitly marks PP5 as Not Applicable.

Benign criteria applied · 0

No benign criterion marked as applied in the recorded assessment.

Recorded classification: Likely pathogenic

Likely Pathogenic: PS4 (strong) plus PM1 and PP3 (moderate), with PP5 (supporting), satisfy ACMG/AMP Table 5.

02The sources

Evidence at a glance

Evidence summaries and captured source records, where available. Missing entries should not be interpreted as negative findings.

gnomAD v4.1
gnomAD v2.1
Population frequency
156 / 1,614,004 alleles

gnomAD v4.1: 156 / 1,614,004 alleles. Recorded AF 9.6654e-05. Recorded homozygote count 0.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 3.89177e-05; MAF= 0.00389%, 11/282648 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 7.75074e-05; MAF= 0.00775%, 10/129020 alleles, homozygotes = 0); grpmax FAF= 3.423e-05.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

No screenshot for this evidence
REVEL score
0.965 recorded score

Recorded REVEL score: 0.965. Refer to the recorded PP3/BP4 rationale for interpretation.

ClinVar submissions
31 reported laboratory submissions

30 Pathogenic · 1 pathogenic. ClinVar API review status: reviewed by expert panel.

No screenshot for this evidence
Functional evidence
Not recorded

No standalone functional evidence summary is recorded in evidence_summary.functional.

No listed criterion applied OncoKB ↗
COSMIC
Cancer Hotspots
Somatic evidence
4 recorded samples

This variant has previously been reported in somatic cancers (COSMIC; COSV62092833, n = 4 times).

Cancer Hotspots

This variant does not lie in a statistically significant hotspot.

For specialists

Technical detail

ACMG/AMP criteria under ClinGen RYR1 VCEP v2.0, with the data and sources behind each one.

28 criteria with recorded statuses: 4 met · 4 not met · 8 not assessed · 12 not applicable. Open any row for the full reasoning, the rule and the evidence behind it.

Met Not met Not assessed Not applicable

Only PS1, PM1, PM5, PP2, and BP1 were adjudicated under the RYR1 VCEP Version 2.0 rules.

PM1 is met at moderate strength because residue 2434 lies in the specified 2,101-2,458 central region; PS1 and PM5 were not applied, so the VCEP downgrade condition is not triggered.

PS2 and PM6 are not assessed because no proven or assumed de novo cases with the required parental evidence are documented.

PP1 is not assessed because cosegregation is reported but the qualifying meiosis count required by the VCEP is unavailable.

BS4 is not applicable under the RYR1 VCEP specification.

PS4 is met at Strong because the VCEP's alternate case-control path applies: popmax FAF 0.00010959 is >0.00006 and <0.0038, and the computed OR 738.94 satisfies the exact >=18.7 operator.

PP4, PP5, BP5, and BP6 are not applicable because the RYR1 VCEP CSPEC explicitly marks each criterion Not Applicable.

PM3 is not applicable under the RYR1 MHS VCEP specification.

BP2 is not assessed because cis phase with another pathogenic variant is not documented.

Met · 4

PS4 StrongVCEPMet at strong: 7 MH case points and computed OR 738.94 (95% CI 337.82–1,616.35) exceed the VCEP's >=18.7 threshold with popmax FAF 0.00010959 <0.0038. Details ▾Hide ▴
Reasoning

The RYR1 VCEP PS4 Strong rule requires either at least 7 MH case points with popmax <=0.00006, or, when popmax MAF is >0.00006, an odds ratio >=18.7 comparing MH case points with gnomAD allele count and popmax <0.0038. Brandt et al. report Gly-2434-Arg in 7 of 105 unrelated MHS individuals/families, supplying 7 MH case points. gnomAD v4.1 reports popmax FAF 0.00010959, so the alternate path applies: 0.00010959 > 0.00006, and 0.00010959 < 0.0038. Using 7 variant-positive cases and 98 variant-negative cases versus 156 variant alleles and 1,613,848 nonvariant alleles in gnomAD v4.1, I computed OR = (7 x 1,613,848)/(98 x 156) = 738.94, 95% CI 337.82-1,616.35; therefore 738.94 >= 18.7 and PS4 Strong is met. The exact p.Gly2434Arg is independently reported in additional MHS cohorts and affected families, including 4/73 North American MHS individuals, 2/48 Swiss MHS families, and affected families with rhabdomyolysis/exertional myalgia.

VCEP rule
The prevalence of the variant in affected individuals significantly increased compared with the prevalence in controls. * ≥7 MH case points. Probands with a personal or family history of an MH event are awarded 0.5 points, probands with a personal or family history of a positive (MHS) IVCT/CHCT are awarded an additional 0.5 points. Probands with multiple variants in RYR1 classified as VUS, likely pathogenic or pathogenic are not considered. Popmax in gnomAD ≤0.00006. * For variants with popmax MAF gnomAD >0.00006, an odds ratio of ≥18.7 when comparing MH case points to allele count in gnomAD can qualify. Popmax in gnomAD must be <0.0038.
Evidence considered
  • ClinGen RYR1 VCEP PS4 Strong rule: at least 7 MH case points can qualify when popmax in gnomAD is <=0.00006; for popmax MAF >0.00006, OR >=18.7 can qualify when popmax is <0.0038.
  • Brandt et al. 1999, PMID:10484775, Results 'Screening for known mutations' and Table 1: Gly-2434-Arg was found in 7 of 105 unrelated MHS individuals/families; this supplies 7 MH case points.
  • gnomAD v4.1, source record: popmax FAF = 0.00010959, variant allele count = 156, total allele number = 1,614,004; therefore 0.00010959 > 0.00006 and 0.00010959 < 0.0038.
  • Case-control calculation performed from the reported counts: cases 7 variant-positive and 98 variant-negative individuals; gnomAD controls 156 variant alleles and 1,613,848 nonvariant alleles; OR = (7 x 1,613,848)/(98 x 156) = 738.94, 95% CI = 337.82-1,616.35; explicit comparison: 738.94 >= 18.7? yes.
  • Sambuughin et al. 2001, PMID:11575529: Gly2434Arg occurred in 4 of 73 North American MHS individuals (5.5%), with positive CHCT responses and family cosegregation.
  • Girard et al. 2001, PMID:11668625, Results/Table 2: G2434R occurred in 2 of 48 unrelated Swiss MHS families (4%).
  • Jungbluth et al. 2013, PMID:23628358, Figure 1 caption/Results/Table 2: p.Gly2434Arg was identified in affected families with recurrent rhabdomyolysis and/or exertional myalgia.
Sources
PM1 ModerateVCEPMet at moderate: residue 2434 lies within the VCEP-approved central PM1 region 2,101-2,458, and PS1 or PM5 is not applied. Details ▾Hide ▴
Reasoning

The queried variant is p.Gly2434Arg, so its residue is 2434. The RYR1 VCEP PM1 moderate region explicitly includes residues 2,101-2,458 (central region), which contains residue 2434. The VCEP also states that PM1 should not be moderate when PS1 or PM5 is applied; neither PS1 nor PM5 is applied here. The VCEP domain_tables entry is empty, so there is no additional authoritative domain-table restriction to check.

VCEP rule
Located in a mutational hot spot and/or critical and well established functional domain. * Residues 1-552 (N-terminal region) and 2,101-2,458 (central region) * PM1 should not be applied at a moderate weight with PS1/PM5, see PM1_Supporting.
Evidence considered
  • RYR1 VCEP PM1 moderate rule: residues 1-552 and 2,101-2,458 are specified regions; p.Gly2434Arg has residue position 2434.
  • The VCEP PM1 rule limits the moderate weight when PS1/PM5 is used; neither PS1 nor PM5 is applied in this assessment.
  • vcep_materials.json has an empty domain_tables object for RYR1, so no additional domain-table entry supplies a separate restriction.
Sources
PP3 ModerateVCEPMet (moderate): REVEL 0.965 exceeds the VCEP's >0.85 threshold for computational evidence supporting a deleterious effect. Details ▾Hide ▴
Reasoning

The VCEP PP3 rule applies to computational evidence supporting a deleterious effect and specifically requires REVEL >0.85 for the applicable missense variant path. NM_000540.3:c.7300G>A is a missense variant, p.(Gly2434Arg), and the recorded REVEL score is 0.965, exceeding the VCEP cutoff. No splice-prediction result is counted for PP3 because the governing PP3 rule names REVEL for this situation; the same REVEL result is not reused for BP4.

VCEP rule
Multiple lines of computational evidence support a deleterious effect on the gene or gene product * Use REVEL score of >0.85
Evidence considered
  • VCEP CSPEC PP3 rule: REVEL score >0.85 qualifies computational evidence supporting a deleterious effect.
  • Local REVEL predictor lookup for NM_000540.3:c.7300G>A / p.(Gly2434Arg): REVEL score 0.965.
Sources
PP5 SupportingVCEPNot applicable: the RYR1 VCEP explicitly marks PP5 as Not Applicable. Details ▾Hide ▴
Reasoning

Expert panel ClinGen Malignant Hyperthermia Susceptibility Variant Curation Expert Panel, ClinGen classified as Pathogenic.

VCEP rule
Not Applicable
Evidence considered
  • The RYR1 Version 2.0 CSPEC criteria entry for PP5 states applicability: Not Applicable.
  • ClinVar expert panel classification
Sources

Not met · 4 · evaluated, threshold not reached

BA1 VCEPNot met: gnomAD v4.1 popmax FAF is 0.00010959 (0.010959%), below the VCEP BA1 threshold of >0.0038 (0.38%). Details ▾Hide ▴
Reasoning

The RYR1 VCEP specifies BA1 when the popmax allele frequency is >0.0038 (0.38%). Using the default all-comers gnomAD source because the VCEP does not specify a non-cancer or exome-only source, the highest reported popmax FAF is 0.00010959 (0.010959%) in gnomAD v4.1, below 0.0038; gnomAD v2.1 reports grpmax FAF 0.00003423. Therefore BA1 is not met.

VCEP rule
Popmax allele frequency >0.0038 (0.38%)
Evidence considered
  • RYR1 VCEP Version 2.0 BA1 rule: Popmax allele frequency >0.0038 (0.38%).
  • gnomAD v4.1 all-comers: popmax FAF 0.00010959 (0.010959%), European non-Finnish AF 0.00012627 (149/1,180,014 alleles), homozygotes 0.
  • gnomAD v2.1 all-comers: grpmax FAF 0.00003423 (0.003423%), European non-Finnish AF 0.0000775074 (10/129,020 alleles), homozygotes 0.
Sources
BS1 VCEPNot met: gnomAD v4.1 popmax FAF is 0.00010959 (0.010959%), below the VCEP BS1 threshold of >0.0008 (0.08%). Details ▾Hide ▴
Reasoning

The RYR1 VCEP specifies BS1 at strong strength when the popmax allele frequency is >0.0008 (0.08%). Using the default all-comers gnomAD source because the VCEP does not specify a non-cancer or exome-only source, the highest reported popmax FAF is 0.00010959 (0.010959%) in gnomAD v4.1, below 0.0008; gnomAD v2.1 reports grpmax FAF 0.00003423. Therefore BS1 is not met.

VCEP rule
Popmax allele frequency >0.0008 (0.08%)
Evidence considered
  • RYR1 VCEP Version 2.0 BS1 rule: Popmax allele frequency >0.0008 (0.08%).
  • gnomAD v4.1 all-comers: popmax FAF 0.00010959 (0.010959%), European non-Finnish AF 0.00012627 (149/1,180,014 alleles), homozygotes 0.
  • gnomAD v2.1 all-comers: grpmax FAF 0.00003423 (0.003423%), European non-Finnish AF 0.0000775074 (10/129,020 alleles), homozygotes 0.
Sources
BS3 VCEPNot met: carrier myotubes had a 197-second versus 474-second Ca2+ response time, showing increased rather than absent ryanodine sensitivity. Details ▾Hide ▴
Reasoning

The variant-specific study in PMID:10700782 reports increased, faster ryanodine-stimulated intracellular Ca2+ responses in primary skeletal-muscle myotubes from four carriers compared with four controls, rather than no damaging effect. This directly conflicts with the premise of BS3. The evidence does not satisfy either VCEP benign functional path: it is not a study showing no significant increased sensitivity in an approved in vitro assay with measured Ca2+ release and n≥3, nor does it show one or more independent ex vivo studies with no significant Ca2+ release.

VCEP rule
Well-established functional studies show no damaging effect on protein function * No significant increased sensitivity to RYR1 agonist in an approved in vitro assay, Ca2+ release measured, n≥3 * One or two independent ex vivo studies, NO significant release of Ca2+ in response to agonist * Knock-in mouse showing no MH reaction in response to RYR1 agonist AND no increased sensitivity to RYR1 agonists in ex vivo tissue/cells
Evidence considered
  • ClinGen RYR1 V2.0 BS3 supporting rule: the benign path requires no significant increased sensitivity in an approved in vitro assay with Ca2+ release measured and n≥3, one or two independent ex vivo studies with no significant Ca2+ release, or a knock-in mouse showing neither an MH reaction nor increased ex vivo sensitivity.
  • Brinkmeier et al. (PMID:10700782), Results: Gly2435Arg/Gly2434Arg carrier myotubes showed faster and stronger ryanodine-induced Ca2+ responses than controls; mean time to half-maximum response was 197 seconds versus 474 seconds, which is incompatible with no damaging effect.
Sources
BP4 VCEPNot met: REVEL 0.965 does not satisfy the VCEP's <0.5 threshold for computational evidence suggesting no impact. Details ▾Hide ▴
Reasoning

The VCEP BP4 rule requires computational evidence suggesting no impact on the gene or gene product and a REVEL score <0.5. This variant is missense, so BP4 is within the rule's protein-impact scope, but its REVEL score is 0.965, not <0.5. The score therefore does not support BP4; the SpliceAI no-impact result is not used to override the missense REVEL requirement and is not double-counted with PP3.

VCEP rule
Computational evidence suggest no impact on gene or gene product, REVEL score of <0.5
Evidence considered
  • VCEP CSPEC BP4 rule: computational evidence suggesting no impact requires REVEL score <0.5.
  • Local REVEL predictor lookup for NM_000540.3:c.7300G>A / p.(Gly2434Arg): REVEL score 0.965, above the BP4 cutoff.
Sources

Not assessed · 8 · no assessment recorded

PS1 VCEPNot assessed: reports use G7303A or Gly2435Arg nomenclature, but do not establish a distinct nucleotide variant from c.7300G>A for the same amino-acid change. Details ▾Hide ▴
Reasoning

The VCEP requires the same amino-acid change as a previously established pathogenic variant, with that prior variant reaching pathogenic classification without PS1. The available reports describe Gly2434Arg under differing historical coding or protein-numbering conventions, including G7303A and Gly2435Arg, but do not establish that either is a distinct nucleotide change from NM_000540.3:c.7300G>A. The evidence therefore cannot verify an independent previously established pathogenic variant satisfying PS1.

VCEP rule
Same amino acid change as a previously established pathogenic variant regardless of nucleotide change * Previously established pathogenic variant must reach a classification of pathogenic without PS1
Evidence considered
  • The VCEP PS1 rule requires the same amino-acid change as a previously established pathogenic variant, and the prior variant must reach pathogenic classification without PS1.
  • Brandt et al. report Gly-2434-Arg as G7303A, while Brinkmeier et al. report Gly2435Arg; the extracted records identify these as corresponding to the queried protein change but do not establish distinct nucleotide identity under NM_000540.3.
Still missing
  • Confirm an independently represented nucleotide change producing p.Gly2434Arg and confirm that it reached pathogenic classification without PS1.
Sources
PS2 VCEPNot assessed: no proven or assumed de novo case with documented maternity and paternity testing is reported, so PS2 points cannot be assigned. Details ▾Hide ▴
Reasoning

The available case evidence does not document any proven or assumed de novo occurrence of RYR1 NM_000540.3:c.7300G>A/p.(Gly2434Arg), nor does it provide parental maternity and paternity testing for a de novo case. Therefore, no PS2 points or strength can be assigned under the VCEP point-based rule.

VCEP rule
Each proven de novo case, 2 points, each assumed de novo case, 1 point, ≥8 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 4-7 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 2-3 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 1 point
Evidence considered
  • The VCEP CSPEC PS2 rule assigns 2 points per proven de novo case and 1 point per assumed de novo case, with strength determined by the total points; the case evidence contains no documented de novo case or parental testing for this variant.
Still missing
  • Documented de novo cases with parental maternity and paternity confirmation are unavailable.
  • The number of proven and assumed de novo cases cannot be determined.
Sources
PS3 VCEPNot assessed: one ex vivo study showed increased ryanodine-induced Ca2+ responses, but PS3 Supporting requires two independent ex vivo studies or another fully documented VCEP path. Details ▾Hide ▴
Reasoning

The VCEP's applicable PS3 paths require either a specified knock-in mouse result, a HEK293 assay with significantly increased Ca2+ release versus WT, known pathogenic and benign controls, and n≥3, three or more independent ex vivo studies showing Ca2+ release in response to an RYR1 agonist, or two independent ex vivo studies showing that result. PMID:10700782 reports increased ryanodine-induced Ca2+ responses in primary myotubes from four Gly2435Arg/Gly2434Arg carriers versus four controls, but it is one ex vivo study. PMID:19648156 summarizes prior heightened sensitivity but does not provide an independent variant-specific Ca2+ release experiment, and PMID:10484775 reports IVCT contractures rather than the VCEP-specified Ca2+ release assay. The available evidence does not document the required HEK293 controls and sample size, and the separate knock-in-mouse lead is not independently auditable in the available source material. Therefore no PS3 strength can be assigned.

VCEP rule
Well-established functional studies supportive of a damaging effect on protein function * Two independent ex vivo studies all showing release of Ca2+ in response to RYR1 agonist
Evidence considered
  • ClinGen RYR1 V2.0 PS3 supporting rule: the Supporting path requires two independent ex vivo studies all showing release of Ca2+ in response to an RYR1 agonist.
  • Brinkmeier et al. (PMID:10700782), Results, "MHS myotubes: resting Ca2+ concentrations and effects of ryanodine at 37°C": primary myotubes from four malignant-hyperthermia-susceptible Gly2435Arg/Gly2434Arg carriers and four controls had faster and stronger ryanodine-induced Ca2+ responses; mean time to half-maximum response was 197 seconds versus 474 seconds, and response-curve area was more than twice that of controls.
  • Robinson et al. (PMID:19648156), Results, "RYR1 genotype–IVCT phenotype correlation": p.G2434R is described as having heightened sensitivity to activating concentrations of Ca2+, caffeine, and 4-chloro-m-cresol in vitro, but this paper summarizes prior work rather than presenting an independent variant-specific Ca2+ release experiment.
  • Brandt et al. (PMID:10484775), Results and Table 3: Gly-2434-Arg muscle bundles showed abnormal caffeine and halothane IVCT contractures, but the reported assay does not establish the VCEP's required agonist-induced Ca2+ release endpoint.
Still missing
  • A second independent ex vivo study demonstrating Ca2+ release in response to an RYR1 agonist is not available.
  • The HEK293 study is not available with documented known pathogenic and benign controls and n≥3.
  • The reported knock-in-mouse findings are not independently auditable from an available full-text source.
Sources
PM5 VCEPNot assessed: no different pathogenic missense comparator at residue 2434 was identified, so the required prior classification and Grantham-score comparison are unavailable. Details ▾Hide ▴
Reasoning

The VCEP PM5 rule requires a different missense variant at the same amino-acid residue that was previously determined to be pathogenic without PM5; moderate strength additionally requires the alternate pathogenic variant's Grantham score to be lower than the assessed variant's. The available same-residue search found no comparator candidates, and the supplied literature reports Gly2434Arg itself rather than a different missense change at residue 2434. Therefore the required comparator and Grantham comparison are unavailable.

VCEP rule
Missense change at an amino acid residue where a different missense varaint previously determined to be pathogenic * Previously established pathogenic variant must reach a classification of pathogenicity without PM5 * Grantham score for alternate pathogenic variant must be less than for variant being assessed ... Missense change at an amino acid residue where a different missense variant previously determined to be pathogenic. * Previously established likely pathogenic variant can be considered supporting evidence, must reach a classification of likely pathogenic without PM5. * Grantham score for alternate likely pathogenic variant must be less than for variant being assessed.
Evidence considered
  • The VCEP PM5 rule requires a different missense variant at the same residue, prior pathogenic or likely pathogenic classification without PM5, and a lower alternate Grantham score for the applicable strength.
  • pm5_candidates.json reports zero same-residue candidates and zero expert-panel or non-expert majority pathogenic/likely pathogenic candidates.
Still missing
  • Identify a different missense variant at RYR1 residue 2434, verify pathogenic or likely pathogenic classification without PM5, and obtain its Grantham score.
Sources
cspec ↗pm5_candidates
PM6 VCEPNot assessed: no assumed de novo occurrence is documented, so the VCEP PM6 point total and strength cannot be calculated. Details ▾Hide ▴
Reasoning

The available case evidence does not document any assumed de novo occurrence of RYR1 NM_000540.3:c.7300G>A/p.(Gly2434Arg) in a patient with the relevant disease and without confirmed parental testing. Consequently, the VCEP PM6 point total cannot be calculated.

VCEP rule
Each proven de novo case, 2 points, each assumed de novo case, 1 point, ≥8 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 4-7 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 2-3 points ... Each proven de novo case, 2 points, each assumed de novo case, 1 point, a total of 1 point
Evidence considered
  • The VCEP CSPEC PM6 rule assigns 2 points per proven de novo case and 1 point per assumed de novo case, with strength determined by the total points; no assumed de novo case is documented in the available evidence.
Still missing
  • A documented assumed de novo case with the relevant phenotype is unavailable.
  • The number of assumed de novo cases cannot be determined.
Sources
PP1 VCEPNot assessed: cosegregation is described in selected families, but the number of qualifying reported meioses needed for PP1 strength is unavailable. Details ▾Hide ▴
Reasoning

PMID:11575529 reports cosegregation of Gly2434Arg with a positive CHCT phenotype in selected families, including a proband and mother who were both mutation-positive and CHCT-positive, but the available extracted evidence does not report the number of qualifying meioses. The VCEP threshold for PP1 strength therefore cannot be applied.

VCEP rule
Co-segregation with disease in ≥7 reported meioses ... Co-segregation with disease in 5-6 reported meioses ... Co-segregation with disease in 3-4 reported meioses
Evidence considered
  • North American malignant hyperthermia cohort paper, paper_extracts entry for PMID:11575529: the finding reports cosegregation of Gly2434Arg with positive CHCT in families BG21 and US47; in BG21, the proband and mother were mutation-positive and CHCT-positive while the father and two brothers were negative for both. The extract does not provide a count of qualifying reported meioses.
  • VCEP CSPEC PP1 thresholds require 3-4 reported meioses for supporting, 5-6 for moderate, or ≥7 for strong evidence.
Still missing
  • The exact number of reported cosegregating meioses is unavailable.
  • A complete pedigree-level count of affected and variant-positive individuals is unavailable.
Sources
BS2 VCEPNot assessed: gnomAD reports zero homozygotes, but no qualifying healthy adult with a documented negative IVCT/CHCT test is available. Details ▾Hide ▴
Reasoning

The VCEP BS2 rule requires observation in a healthy adult with full penetrance expected at an early age, with strong evidence requiring two or more variant-positive individuals with a negative IVCT/CHCT test or moderate evidence requiring one such individual. Population data show zero homozygotes in gnomAD v2.1 and v4.1, but do not establish healthy adult status, heterozygosity, or negative IVCT/CHCT testing for named individuals. The available evidence is therefore insufficient to assess BS2.

VCEP rule
Observed in a healthy adult individual for a recessive (homozygous), dominant (heterozygous), or X-linked (hemizygous) disorder with full penetrance expected at an early age. ... * Two or more variant positive individuals with a negative IVCT/CHCT test
Evidence considered
  • RYR1 VCEP Version 2.0 BS2 strong rule requires two or more variant-positive individuals with a negative IVCT/CHCT test; its moderate rule requires one variant-positive individual with a negative IVCT/CHCT test.
  • gnomAD v4.1 all-comers: 156/1,614,004 alleles, homozygotes 0; no named healthy-adult or IVCT/CHCT phenotype data are provided.
  • gnomAD v2.1 all-comers: 11/282,648 alleles, homozygotes 0; no named healthy-adult or IVCT/CHCT phenotype data are provided.
Still missing
  • Need one or more named variant-positive healthy adults with documented negative IVCT/CHCT results; two are required for the VCEP strong path.
Sources
BP2 VCEPNot assessed: no pathogenic variant in cis with p.Gly2434Arg or definitive cis-phase result is reported. Details ▾Hide ▴
Reasoning

The VCEP BP2 rule requires the evaluated variant to be observed in cis with a pathogenic variant in any inheritance pattern. The available case evidence reports affected individuals and familial observations for p.Gly2434Arg, but does not document a second pathogenic variant in cis or establish cis phase with one. Because the required phase and pathogenic-variant evidence are unavailable, BP2 cannot be evaluated.

VCEP rule
Observed in cis with a pathogenic variant in any inheritance pattern
Evidence considered
  • The RYR1 MHS VCEP Version 2.0 BP2 specification requires observation in cis with a pathogenic variant in any inheritance pattern.
  • The case literature summaries describe p.Gly2434Arg in affected individuals and families but do not report a second pathogenic variant in cis or a definitive cis-phase determination.
Still missing
  • A confirmed pathogenic RYR1 variant in cis with NM_000540.3:c.7300G>A is not documented.
  • Parental, familial, or molecular phasing evidence establishing cis phase is not available.
Sources
Not applicable · 12· recorded as not applicable Show reasons ▾Hide reasons ▴
PVS1 VCEPNot applicable: the VCEP excludes PVS1 for this gene. Details ▾Hide ▴
Reasoning

The ClinGen Malignant Hyperthermia Susceptibility Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for RYR1 Version 2.0 marks PVS1 as not applicable. The VCEP states: "PVS1 is not applicable. MHS is due to gain of function variants in RYR1." NM_000540.3:c.7300G>A in RYR1 is a missense substitution predicted to produce NP_000531.2:p.(Gly2434Arg). This determination was made deterministically from the VCEP criteria specification, prior to LLM adjudication.

VCEP rule
deterministic_prefilter: vcep_not_applicable
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: vcep_not_applicable
Sources
PM2 VCEPNot applicable: the RYR1 VCEP marks PM2 not applicable and states that PM2 is not used alone. Details ▾Hide ▴
Reasoning

The RYR1 VCEP marks PM2 as not applicable for this VCEP and explicitly states that PM2 is not used alone. No PM2 evidence is assigned.

VCEP rule
PM2 is not used alone.
Evidence considered
  • RYR1 VCEP Version 2.0 PM2 applicability: Not Applicable for this VCEP; instruction: PM2 is not used alone.
Sources
PM3 VCEPNot applicable: the VCEP excludes PM3 because MHS is autosomal dominant with reduced penetrance. Details ▾Hide ▴
Reasoning

PM3 is not applicable under the RYR1 Malignant Hyperthermia Susceptibility VCEP specification because MHS is inherited as an autosomal dominant trait with reduced penetrance. The VCEP explicitly marks PM3 as not applicable; therefore, no trans-phase or affected-proband evidence can activate this criterion.

VCEP rule
PM3 is not applicable. MHS is inherited as an autosomal dominant trait with reduced penetrance.
Evidence considered
  • ClinGen MHS VCEP RYR1 Version 2.0 PM3 specification: PM3 is marked not applicable and states that MHS is inherited as an autosomal dominant trait with reduced penetrance.
Sources
PM4 VCEPNot applicable: the VCEP excludes PM4 for this gene. Details ▾Hide ▴
Reasoning

The ClinGen Malignant Hyperthermia Susceptibility Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for RYR1 Version 2.0 marks PM4 as not applicable. The VCEP states: "PM4 is not applicable. The majority of RYR1 variants that are causative for MHS are missense variants." NM_000540.3:c.7300G>A in RYR1 is a missense substitution predicted to produce NP_000531.2:p.(Gly2434Arg). This determination was made deterministically from the VCEP criteria specification, prior to LLM adjudication.

VCEP rule
deterministic_prefilter: vcep_not_applicable
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: vcep_not_applicable
Sources
PP2 VCEPNot applicable: the RYR1 VCEP states that PP2 is not applicable because missense constraint is absent, with a gnomAD z-score of 1.92. Details ▾Hide ▴
Reasoning

The RYR1 VCEP explicitly marks PP2 not applicable because RYR1 does not appear constrained for missense variation, citing a gnomAD missense constraint z-score of 1.92.

VCEP rule
PP2 is not applicable. RYR1 does not appear to be constrained for missense variation with a z-score of 1.92 in gnomAD.
Evidence considered
  • RYR1 VCEP PP2 instruction: PP2 is not applicable; RYR1 does not appear to be constrained for missense variation, with a cited gnomAD z-score of 1.92.
Sources
PP4 VCEPNot applicable: the RYR1 VCEP explicitly marks PP4 as Not Applicable. Details ▾Hide ▴
Reasoning

The RYR1 VCEP CSPEC marks PP4 as Not Applicable. No generic PP4 phenotype-specificity rule was substituted.

VCEP rule
Not Applicable
Evidence considered
  • The RYR1 Version 2.0 CSPEC criteria entry for PP4 states applicability: Not Applicable.
Sources
BS4 VCEPNot applicable: the RYR1 VCEP does not use BS4 because MHS phenotype cannot be reliably determined without an MH crisis and IVCT has false positives. Details ▾Hide ▴
Reasoning

The RYR1 VCEP explicitly designates BS4 as not applicable because MHS phenotype determination relies on IVCT or CHCT, IVCT has an approximately 6% false-positive rate, and phenotype cannot be reliably determined in individuals without an MH crisis. This criterion is not used regardless of the reported non-segregation observation in PMID:10484775.

VCEP rule
BS4 is not applicable. Phenotype for MHS is routinely determined based on the vitro contraction test (IVCT) that has a false positive rate of approximately 6% (PP1) or the caffeine-halothane contracture test (CHCT). As the phenotype in individuals who have not experienced an MH crisis cannot be reliably determined BS4 is not utilized.
Evidence considered
  • RYR1 VCEP CSPEC instruction: BS4 is not applicable because MHS phenotype is routinely determined by IVCT or CHCT, IVCT has an approximately 6% false-positive rate, and phenotype in individuals without an MH crisis cannot be reliably determined.
  • PMID:10484775 paper_extracts entry reports two individuals without the variant or disease haplotype who nevertheless had positive IVCT results; this observation does not override the VCEP's explicit BS4 non-applicability.
Sources
BP1 VCEPNot applicable: the RYR1 VCEP states that malignant hyperthermia is caused primarily by missense variants, excluding BP1. Details ▾Hide ▴
Reasoning

The RYR1 VCEP explicitly marks BP1 not applicable because malignant hyperthermia is caused primarily by missense variants in RYR1.

VCEP rule
BP1 is not applicable. MH is caused primarily by missense variants in RYR1.
Evidence considered
  • RYR1 VCEP BP1 instruction: BP1 is not applicable because MH is caused primarily by missense variants in RYR1.
Sources
BP3 VCEPNot applicable: the VCEP excludes BP3 for this gene. Details ▾Hide ▴
Reasoning

The ClinGen Malignant Hyperthermia Susceptibility Expert Panel Specifications to the ACMG/AMP Variant Interpretation Guidelines for RYR1 Version 2.0 marks BP3 as not applicable. The VCEP states: "BP3 is not applicable. RYR1 does not have repetitive regions without known function." NM_000540.3:c.7300G>A in RYR1 is a missense substitution predicted to produce NP_000531.2:p.(Gly2434Arg). This determination was made deterministically from the VCEP criteria specification, prior to LLM adjudication.

VCEP rule
deterministic_prefilter: vcep_not_applicable
Evidence considered
  • Deterministic consequence classification: missense (prefetch.json normalized protein consequence)
  • VCEP criterion policy: vcep_not_applicable
Sources
BP5 VCEPNot applicable: the RYR1 VCEP explicitly marks BP5 as Not Applicable. Details ▾Hide ▴
Reasoning

The RYR1 VCEP CSPEC marks BP5 as Not Applicable. No alternative benign-rule threshold was substituted.

VCEP rule
Not Applicable
Evidence considered
  • The RYR1 Version 2.0 CSPEC criteria entry for BP5 states applicability: Not Applicable.
Sources
BP6 VCEPNot applicable: the RYR1 VCEP explicitly marks BP6 as Not Applicable. Details ▾Hide ▴
Reasoning

The RYR1 VCEP CSPEC marks BP6 as Not Applicable. No benign assertion from a laboratory or database was used as BP6 evidence.

VCEP rule
Not Applicable
Evidence considered
  • The RYR1 Version 2.0 CSPEC criteria entry for BP6 states applicability: Not Applicable.
Sources
BP7 N/ANot applicable: the variant is missense, whereas the VCEP limits BP7 to synonymous variants. Details ▾Hide ▴
Reasoning

The VCEP BP7 rule is limited to synonymous (silent) variants. NM_000540.3:c.7300G>A produces the missense consequence p.(Gly2434Arg), so BP7 is outside its governing scope and is not_applicable before splice-prediction or conservation evidence is considered.

VCEP rule
A synonymous (silent) variant for which splicing prediction algorithms predict no impact to the splice consensus sequence nor the creation of a new splice site AND the nucleotide is not highly conserved
Evidence considered
  • VCEP CSPEC BP7 rule applies to a synonymous (silent) variant and requires splice prediction and non-high conservation; this variant is missense, p.(Gly2434Arg).
Sources

Identifiers

Gene
RYR1
Transcript
NM_000540.3
Coding (HGVS c.)
NM_000540.3:c.7300G>A
Protein (HGVS p.)
NP_000531.2:p.(Gly2434Arg)
GRCh38
chr19:38499993 G>A
GRCh37
chr19:38990633 G>A
Location and type
Exon 45 · missense
ClinVar
12970
COSMIC
COSV62092833

Gene diagram

Every interpreted variant in RYR1, mapped onto the exon structure of NM_000540.3. Select a row to find it on the plot.

RYR1NM_000540.3
Fetching transcript structure from UCSC…
gnomAD v4.1 156 / 1,614,004 alleles AF 9.67e-05 · 0 homozygotes · FAF 0.00011
gnomAD v2.1 11 / 282,648 alleles AF 3.89e-05 · 0 homozygotes · FAF 3.42e-05
gnomAD-Canada v1.0 Allele count data not recorded

By genetic ancestry

gnomAD v4.1

AF 9.7e-05 · 156 / 1,614,004 alleles · 0 hom · FAF 0.00011
European (non-Finnish)149 / 1,180,014 0.00013
Remaining individuals5 / 62,488 8e-05
African/African American2 / 74,928 2.7e-05
0 alternate alleles recorded in 7 other groups: Admixed American, European (Finnish), Amish, East Asian, Middle Eastern, South Asian, Ashkenazi Jewish.

gnomAD v2.1

AF 3.9e-05 · 11 / 282,648 alleles · 0 hom · FAF 3.4e-05
European (non-Finnish)10 / 129,020 7.8e-05
African/African American1 / 24,956 4e-05
0 alternate alleles recorded in 6 other groups: Admixed American, Ashkenazi Jewish, East Asian, European (Finnish), Remaining individuals, South Asian.

Statements

gnomAD v4.1

This variant is present in gnomAD v4.1 (AF= 9.6654e-05; MAF= 0.00967%, 156/1614004 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 0.00012627; MAF= 0.01263%, 149/1180014 alleles, homozygotes = 0); grpmax FAF= 0.00010959.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 3.89177e-05; MAF= 0.00389%, 11/282648 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 7.75074e-05; MAF= 0.00775%, 10/129020 alleles, homozygotes = 0); grpmax FAF= 3.423e-05.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

SpliceAI and Pangolin

SpliceAI acceptor lossat -385 bp
0.001
SpliceAI acceptor gainat +2 bp
0.003
SpliceAI donor lossat +19 bp
0.004
SpliceAI donor gainat +122 bp
0.002
Pangolin splice lossmagnitude shown
-0.020
Pangolin splice gain
0.002

Other predictors

REVEL
0.965
BayesDel
0.567

How the predictions were used

PP3 ModerateVCEPMet (moderate): REVEL 0.965 exceeds the VCEP's >0.85 threshold for computational evidence supporting a deleterious effect. Details ▾Hide ▴
Reasoning

The VCEP PP3 rule applies to computational evidence supporting a deleterious effect and specifically requires REVEL >0.85 for the applicable missense variant path. NM_000540.3:c.7300G>A is a missense variant, p.(Gly2434Arg), and the recorded REVEL score is 0.965, exceeding the VCEP cutoff. No splice-prediction result is counted for PP3 because the governing PP3 rule names REVEL for this situation; the same REVEL result is not reused for BP4.

VCEP rule
Multiple lines of computational evidence support a deleterious effect on the gene or gene product * Use REVEL score of >0.85
Evidence considered
  • VCEP CSPEC PP3 rule: REVEL score >0.85 qualifies computational evidence supporting a deleterious effect.
  • Local REVEL predictor lookup for NM_000540.3:c.7300G>A / p.(Gly2434Arg): REVEL score 0.965.
Sources
BP4 VCEPNot met: REVEL 0.965 does not satisfy the VCEP's <0.5 threshold for computational evidence suggesting no impact. Details ▾Hide ▴
Reasoning

The VCEP BP4 rule requires computational evidence suggesting no impact on the gene or gene product and a REVEL score <0.5. This variant is missense, so BP4 is within the rule's protein-impact scope, but its REVEL score is 0.965, not <0.5. The score therefore does not support BP4; the SpliceAI no-impact result is not used to override the missense REVEL requirement and is not double-counted with PP3.

VCEP rule
Computational evidence suggest no impact on gene or gene product, REVEL score of <0.5
Evidence considered
  • VCEP CSPEC BP4 rule: computational evidence suggesting no impact requires REVEL score <0.5.
  • Local REVEL predictor lookup for NM_000540.3:c.7300G>A / p.(Gly2434Arg): REVEL score 0.965, above the BP4 cutoff.
Sources
BP7 N/ANot applicable: the variant is missense, whereas the VCEP limits BP7 to synonymous variants. Details ▾Hide ▴
Reasoning

The VCEP BP7 rule is limited to synonymous (silent) variants. NM_000540.3:c.7300G>A produces the missense consequence p.(Gly2434Arg), so BP7 is outside its governing scope and is not_applicable before splice-prediction or conservation evidence is considered.

VCEP rule
A synonymous (silent) variant for which splicing prediction algorithms predict no impact to the splice consensus sequence nor the creation of a new splice site AND the nucleotide is not highly conserved
Evidence considered
  • VCEP CSPEC BP7 rule applies to a synonymous (silent) variant and requires splice prediction and non-high conservation; this variant is missense, p.(Gly2434Arg).
Sources

Statement

In silico

SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.965. BayesDel score = 0.567204.

8 paper records listed. 6 cited in the classification.

Cited in the classification

  • Screening of the ryanodine receptor gene in 105 malignant hyperthermia families: novel mutations and concordance with the in vitro contracture test.
    Brandt A et al. · 1999 Oct
    The paper reports Gly-2434-Arg using the historical coding notation G7303A, corresponding to the queried p.Gly2434Arg protein change, but does not establish that this is a distinct nucleotide variant from NM_000540.3:c.7300G>A.
    → PS4 · strong Names this variant
    PMID 10484775 ↗
    Source detail
    Screening of 105 unrelated MHS individuals for all known RYR1 mutations (Table 1) revealed base exchanges in 23 MH families resulting in the following amino acid substitutions: Arg-614-Cys in nine patients, Arg-614-Leu in one, Arg-2163-Cys in one, Val-2168-Met in one, Thr-2206-Met in three, Gly-2434-Arg in seven and Arg-2454-His in one.

    Location Results, Screening for known mutations; Table 1; Table 3

    Context Screening of 105 unrelated malignant-hyperthermia-susceptible individuals from 95 MH and 10 CCD families, with IVCT phenotyping.

  • North American malignant hyperthermia population: screening of the ryanodine receptor gene and identification of novel mutations.
    Sambuughin N et al. · 2001 Sep
    The paper reports Gly2434Arg using the historical coding notation G7303A and identifies it in four malignant-hyperthermia-susceptible individuals, but the available extraction does not establish a distinct nucleotide change from the queried transcript variant.
    → PS4 · strong Names this variant
    PMID 11575529 ↗
    Source detail
    The most common mutation was Gly2434Arg, occurring in four patients and accounting for 5.5% of the population, followed by Arg2454His in three patients (4.1%) and Arg163Cys in two patients (2.7%).

    Location Results, Distribution of RYR1 Mutations in North American Malignant Hyperthermia Population; Table 1; Table 2

    Context RYR1 screening in 73 unrelated North American individuals diagnosed as malignant-hyperthermia susceptible by caffeine-halothane contracture testing.

  • Genotype-phenotype comparison of the Swiss malignant hyperthermia population.
    Girard T et al. · 2001 Oct
    The paper reports RYR1 c.7300G>A/G2434R in two of 48 unrelated Swiss malignant-hyperthermia families, with IVCT-based phenotype assessment.
    → PS4 · strong Names this variant
    PMID 11668625 ↗
    Source detail
    Mutation R614C was found in 3 families (6%) and mutation G2434R in 2 families (4%). Mutation R2458C was present in one family (2%).

    Location Results, Mutation frequency; Table 2; Abstract

    Context Swiss malignant-hyperthermia cohort of 48 unrelated families with RYR1 mutation screening and in vitro contracture testing.

  • Genetic variation in RYR1 and malignant hyperthermia phenotypes.
    The paper identifies p.G2434R as a recurrent RYR1 variant and describes prior functional characterization showing heightened sensitivity to activating concentrations of Ca2+, caffeine, and 4-chloro-m-cresol in vitro; the paper itself is an IVCT genotype-phenotype cohort and does not provide an independent variant-specific Ca2+ release experiment.
    → PS4 · strong Names this variant
    PMID 19648156 ↗
    Source detail
    This variant has been functionally characterized and shown to have a heightened sensitivity to activating concentrations of Ca2+ and to caffeine and 4-chloro-m-cresol in vitro.

    Location Results, "RYR1 genotype–IVCT phenotype correlation"; Table 3; Table 4

    Context UK MH Investigation Unit cohort with quantitative caffeine, halothane, and ryanodine IVCT assays; p.G2434R was used as a comparator and prior functional results were summarized.

  • Mutations in RYR1 are a common cause of exertional myalgia and rhabdomyolysis.
    The paper explicitly reports RYR1 p.Gly2434Arg in affected families with recurrent rhabdomyolysis and/or exertional myalgia; the exact variant was found in four individuals from Families 7 and 8.
    → PS4 · strong Names this variant
    PMID 23628358 ↗
    Source detail
    In Family 7, both mother (7.I.1, on the right) and daughter (7.II.2, centre) presented with recurrent episodes of rhabdomyolysis and were found to carry the same heterozygous RYR1 missense mutation, p.Gly2434Arg.

    Location Figure 1 caption; Results, section 3.3; Table 2, Families 7–8

    Context RYR1 sequencing in 39 unrelated families presenting with exertional myalgia and/or rhabdomyolysis, with familial testing and comparison to 1000 Genomes and EVS population datasets.

  • Malignant hyperthermia in Canada: characteristics of index anesthetics in 129 ma
    The paper reports p.Gly2434Arg in four caffeine-halothane contracture-test-confirmed malignant-hyperthermia-susceptible probands with adverse anesthetic reactions and clinical MH features.
    → PS4 · strong Names this variant
    PMID 23842196 ↗
    Source detail
    Several years later he underwent genetic testing, and he was found to have a known causative MH mutation in RYR1 (p.Gly2434Arg).

    Location Table 3; Appendix, Case B—Airway Rescue in the Emergency Department and Case D—Electroconvulsive Therapy in Treatment Suite

    Context Retrospective study of 129 CHCT-confirmed MHS probands; RYR1 mutation analysis was available for 51 individuals, with detailed clinical case summaries.

Other recorded publications

  • Malignant hyperthermia causing Gly2435Arg mutation of the ryanodine receptor facilitates ryanodine-induced calcium release in myotubes.
    Brinkmeier H et al. · 1999
    The paper reports Gly2435Arg in four malignant-hyperthermia-susceptible individuals; the extracted evidence identifies it as corresponding to the queried p.Gly2434Arg under a differing numbering convention, not as a confirmed distinct nucleotide change.
    Names this variant
    PMID 10700782 ↗
    Quoted passage
    PCR analysis revealed that the four MHS individuals were heterozygous for the Gly2435Arg mutation of the RYR1 gene.

    Patients and methods, Patients; Results, MHS myotubes: resting Ca2+ concentrations and effects of ryanodine at 37°C

  • [Preliminary report: first identification of known mutation in the ryanodine receptor gene in a Japanese malignant hyperthermia pedigree].
    Ichihara Y et al. · 2000
    No paper-specific finding is recorded.
    PMID 10793526 ↗

Screenshots represent source records captured during evidence collection. Select one to view the recorded source content.

All source links

Statements for reports

The evidence statements recorded by the interpretation pipeline. They have not been reinterpreted by the page.

gnomAD v4.1

This variant is present in gnomAD v4.1 (AF= 9.6654e-05; MAF= 0.00967%, 156/1614004 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 0.00012627; MAF= 0.01263%, 149/1180014 alleles, homozygotes = 0); grpmax FAF= 0.00010959.

gnomAD v2.1

This variant is present in gnomAD v2.1 (AF= 3.89177e-05; MAF= 0.00389%, 11/282648 alleles, homozygotes = 0) and has highest observed frequency in the European (non-Finnish) population (AF= 7.75074e-05; MAF= 0.00775%, 10/129020 alleles, homozygotes = 0); grpmax FAF= 3.423e-05.

gnomAD-Canada

Not available in gnomAD-Canada v1.0.

ClinVar

This variant has been reported in ClinVar as Pathogenic (30 clinical laboratories) and as pathogenic (1 clinical laboratory) and as drug response by ClinPGx (expert panel) and as Pathogenic by ClinGen Malignant Hyperthermia Susceptibility Variant Curation Expert Panel, ClinGen (expert panel). (ClinVarID = 12970)

In silico

SpliceAI predicts no significant splice impact for this variant (max delta score = 0.00). REVEL score = 0.965. BayesDel score = 0.567204.

Somatic

This variant does not lie in a statistically significant hotspot. This variant has previously been reported in somatic cancers (COSMIC; COSV62092833, n = 4 times).

Cancer Hotspots

This variant does not lie in a statistically significant hotspot.