rs145943283

Variant names:

• chr19-38448460-C-T
• rs145943283
• NM_000540.3:c.906C>T

Variant summary

Our verdict is Benign. Variant got -19 ACMG points: 0P and 19B. BP4_Moderate BP6_Very_Strong BP7 BS1 BS2

The NM_000540.3(RYR1):​c.906C>T​(p.Asp302Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00151 in 1,613,838 control chromosomes in the GnomAD database, including 24 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

• Frequency:
  • Genomes: 𝑓 0.0070 (10 hom., cov: 31)
  • Exomes 𝑓: 0.00094 (14 hom.)
• Consequence: RYR1 NM_000540.3 synonymous
• Clinical Significance: Benign/Likely benign criteria provided, multiple submitters, no conflicts B:10
• Conservation: PhyloP100: -0.293

Genes affected

RYR1 (HGNC:10483): (ryanodine receptor 1) This gene encodes a ryanodine receptor found in skeletal muscle. The encoded protein functions as a calcium release channel in the sarcoplasmic reticulum but also serves to connect the sarcoplasmic reticulum and transverse tubule. Mutations in this gene are associated with malignant hyperthermia susceptibility, central core disease, and minicore myopathy with external ophthalmoplegia. Alternatively spliced transcripts encoding different isoforms have been described. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -19 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.31).
• BP6: Variant 19-38448460-C-T is Benign according to our data. Variant chr19-38448460-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 159863.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr19-38448460-C-T is described in Lovd as [Likely_benign].
• BP7: Synonymous conserved (PhyloP=-0.293 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00703 (1070/152176) while in subpopulation AFR AF= 0.0242 (1003/41518). AF 95% confidence interval is 0.0229. There are 10 homozygotes in gnomad4. There are 491 alleles in male gnomad4 subpopulation. Median coverage is 31. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 10 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR1	NM_000540.3	c.906C>T	p.Asp302Asp	synonymous_variant	Exon 10 of 106	ENST00000359596.8	NP_000531.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR1	ENST00000359596.8	c.906C>T	p.Asp302Asp	synonymous_variant	Exon 10 of 106	5	NM_000540.3	ENSP00000352608.2
RYR1	ENST00000355481.8	c.906C>T	p.Asp302Asp	synonymous_variant	Exon 10 of 105	1		ENSP00000347667.3
RYR1	ENST00000599547.6	n.906C>T		non_coding_transcript_exon_variant	Exon 10 of 80	2		ENSP00000471601.2

Frequencies

GnomAD3 genomes AF: 0.00701 AC: 1066 AN: 152058 Hom.: 10 Cov.: 31

Gnomad AFR AF: 0.0241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00262

Gnomad ASJ AF: 0.000288

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000416

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000250

Gnomad OTH AF: 0.00382

GnomAD3 exomes AF: 0.00215 AC: 541 AN: 251212 Hom.: 7 AF XY: 0.00159 AC XY: 216 AN XY: 135818

Gnomad AFR exome AF: 0.0266

Gnomad AMR exome AF: 0.00220

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000653

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.000220

Gnomad OTH exome AF: 0.000978

GnomAD4 exome AF: 0.000938 AC: 1371 AN: 1461662 Hom.: 14 Cov.: 31 AF XY: 0.000844 AC XY: 614 AN XY: 727138

Gnomad4 AFR exome AF: 0.0246

Gnomad4 AMR exome AF: 0.00221

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000252

Gnomad4 SAS exome AF: 0.0000696

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000254

Gnomad4 OTH exome AF: 0.00235

GnomAD4 genome AF: 0.00703 AC: 1070 AN: 152176 Hom.: 10 Cov.: 31 AF XY: 0.00660 AC XY: 491 AN XY: 74386

Gnomad4 AFR AF: 0.0242

Gnomad4 AMR AF: 0.00262

Gnomad4 ASJ AF: 0.000288

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000208

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000250

Gnomad4 OTH AF: 0.00378

Alfa AF: 0.00367 Hom.: 4

Bravo AF: 0.00835

Asia WGS AF: 0.00318 AC: 11 AN: 3478

EpiCase AF: 0.000218

EpiControl AF: 0.000533

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:10

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not specified Benign:3

Aug 05, 2016

GeneDx

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Dec 08, 2021

Genetic Services Laboratory, University of Chicago

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Mar 12, 2018

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Congenital multicore myopathy with external ophthalmoplegia Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Malignant hyperthermia, susceptibility to, 1 Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

RYR1-related disorder Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not provided Benign:1

-

Breakthrough Genomics, Breakthrough Genomics

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Neuromuscular disease, congenital, with uniform type 1 fiber Benign:1

Jun 14, 2016

Illumina Laboratory Services, Illumina

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Central core myopathy Benign:1

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Congenital myopathy with fiber type disproportion;C1840365:King Denborough syndrome;C1850674:Congenital multicore myopathy with external ophthalmoplegia;C2930980:Malignant hyperthermia, susceptibility to, 1;C5830701:Central core myopathy Benign:1

Jul 19, 2021

Fulgent Genetics, Fulgent Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.31
CADD	Benign	4.2
DANN	Benign	0.72

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

LitVar

Other links and lift over

dbSNP: rs145943283; hg19: chr19-38939100; COSMIC: COSV62104479;