chr19-38486150-G-C

Variant names:

• chr19-38486150-G-C
• rs193922784
• NM_000540.3:c.5495G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 3P and 1B. PM2 PP3 BP6

The NM_000540.3(RYR1):​c.5495G>C​(p.Gly1832Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Benign (no stars). Synonymous variant affecting the same amino acid position (i.e. G1832G) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RYR1 NM_000540.3 missense
• Clinical Significance: Benign no assertion criteria provided B:1 O:1
• Conservation: PhyloP100: 9.90
• Publications: 6 publications found

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]

RYR1 Gene-Disease associations (from GenCC):

• malignant hyperthermia, susceptibility to, 1

  Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp, Ambry Genetics
• congenital multicore myopathy with external ophthalmoplegia

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Genomics England PanelApp
• RYR1-related myopathy

  Inheritance: AR, AD Classification: DEFINITIVE Submitted by: ClinGen
• central core myopathy

  Inheritance: AD, AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Genomics England PanelApp
• King-Denborough syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• malignant hyperthermia of anesthesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• autosomal recessive centronuclear myopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• benign Samaritan congenital myopathy

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• congenital myopathy with myasthenic-like onset

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• lethal multiple pterygium syndrome

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.773
• BP6: Variant 19-38486150-G-C is Benign according to our data. Variant chr19-38486150-G-C is described in ClinVar as Benign. ClinVar VariationId is 65817.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000540.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RYR1	NM_000540.3	MANE Select	c.5495G>C	p.Gly1832Ala	missense	Exon 34 of 106	NP_000531.2
	RYR1	NM_001042723.2		c.5495G>C	p.Gly1832Ala	missense	Exon 34 of 105	NP_001036188.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RYR1	ENST00000359596.8	TSL:5 MANE Select	c.5495G>C	p.Gly1832Ala	missense	Exon 34 of 106	ENSP00000352608.2
	RYR1	ENST00000355481.8	TSL:1	c.5495G>C	p.Gly1832Ala	missense	Exon 34 of 105	ENSP00000347667.3
	RYR1	ENST00000594335.6	TSL:1	n.5495G>C		non_coding_transcript_exon	Exon 34 of 103	ENSP00000470927.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Benign

Submissions summary: Benign:1 Other:1

Revision: no assertion criteria provided

Submissions by phenotype

Central core myopathy Benign:1

May 11, 2010

GeneReviews

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: curation

not provided Other:1

RYR1 database

Significance: not provided

Review Status: no classification provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.84
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Pathogenic	0.36	D
MetaRNN	Pathogenic	0.77	D
MetaSVM	Uncertain	0.34	D
MutationAssessor	Pathogenic	3.1	M
PhyloP100		9.9
PrimateAI	Uncertain	0.74	T
PROVEAN	Pathogenic	-5.8	D
REVEL	Uncertain	0.53
Sift	Uncertain	0.0040	D
Polyphen		1.0	D
Vest4		0.78
MutPred		0.25		Loss of catalytic residue at S1833 (P = 0.1056)
MVP		0.97
MPC		1.1
ClinPred		1.0	D
GERP RS		3.7
Varity_R		0.64
gMVP		0.88
Mutation Taster		=10/90	disease causing

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

Other links and lift over

dbSNP: rs193922784; hg19: chr19-38976790;