rs78795178

Positions:

• chr19-38499816-C-A
• chr19-38499816-C-G
• chr19-38499816-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_000540.3(RYR1):​c.7209C>A​(p.Arg2403=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. R2403R) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RYR1 NM_000540.3 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.96

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 Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.51).
• BP7: Synonymous conserved (PhyloP=-4.96 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RYR1	NM_000540.3	c.7209C>A	p.Arg2403=	synonymous_variant	44/106	ENST00000359596.8	NP_000531.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RYR1	ENST00000359596.8	c.7209C>A	p.Arg2403=	synonymous_variant	44/106	5	NM_000540.3	ENSP00000352608	A2
RYR1	ENST00000355481.8	c.7209C>A	p.Arg2403=	synonymous_variant	44/105	1		ENSP00000347667	P4
RYR1	ENST00000594335.5	c.663C>A	p.Arg221=	synonymous_variant, NMD_transcript_variant	5/49	1		ENSP00000470927
RYR1	ENST00000599547.6	c.7209C>A	p.Arg2403=	synonymous_variant, NMD_transcript_variant	44/80	2		ENSP00000471601

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 35

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.51
CADD	Benign	0.038
DANN	Benign	0.70

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: rs78795178; hg19: chr19-38990456;