chr15-33726433-G-C

Variant names:

• chr15-33726433-G-C
• rs139287308
• NM_001036.6:c.6960G>C

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_Strong BP6_Moderate BP7 BS1 BS2

The NM_001036.6(RYR3):​c.6960G>C​(p.Leu2320Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00044 in 1,611,974 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★). Synonymous variant affecting the same amino acid position (i.e. L2320L) has been classified as Likely benign.

• Frequency:
  • Genomes: 𝑓 0.00071 (2 hom., cov: 32)
  • Exomes 𝑓: 0.00041 (6 hom.)
• Consequence: RYR3 NM_001036.6 synonymous
• Clinical Significance: Benign criteria provided, single submitter B:2
• Conservation: PhyloP100: 0.142
• Publications: 2 publications found

Genes affected

RYR3 (HGNC:10485): (ryanodine receptor 3) The protein encoded by this gene is a ryanodine receptor, which functions to release calcium from intracellular storage for use in many cellular processes. For example, the encoded protein is involved in skeletal muscle contraction by releasing calcium from the sarcoplasmic reticulum followed by depolarization of T-tubules. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2011]

RYR3 Gene-Disease associations (from GenCC):

• genetic developmental and epileptic encephalopathy

  Inheritance: AD Classification: LIMITED Submitted by: ClinGen, G2P
• congenital myopathy

  Inheritance: AR Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Benign. The variant received -15 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.47).
• BP6: Variant 15-33726433-G-C is Benign according to our data. Variant chr15-33726433-G-C is described in ClinVar as [Benign]. Clinvar id is 461942.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=0.142 with no splicing effect.
• BS1: Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.000709 (108/152316) while in subpopulation EAS AF = 0.0197 (102/5176). AF 95% confidence interval is 0.0166. There are 2 homozygotes in GnomAd4. There are 58 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 2 AD,AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RYR3	NM_001036.6	c.6960G>C	p.Leu2320Leu	synonymous_variant	Exon 46 of 104	ENST00000634891.2	NP_001027.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RYR3	ENST00000634891.2	c.6960G>C	p.Leu2320Leu	synonymous_variant	Exon 46 of 104	1	NM_001036.6	ENSP00000489262.1

Frequencies

GnomAD3 genomes AF: 0.000703 AC: 107 AN: 152198 Hom.: 2 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.0195

Gnomad SAS AF: 0.00104

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.000478

GnomAD2 exomes AF: 0.00154 AC: 377 AN: 244868 AF XY: 0.00159

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.0200

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000180

Gnomad OTH exome AF: 0.00100

GnomAD4 exome AF: 0.000412 AC: 602 AN: 1459658 Hom.: 6 Cov.: 31 AF XY: 0.000460 AC XY: 334 AN XY: 725784

African (AFR) AF: 0.00 AC: 0 AN: 33458

American (AMR) AF: 0.0000225 AC: 1 AN: 44492

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26090

East Asian (EAS) AF: 0.0122 AC: 484 AN: 39658

South Asian (SAS) AF: 0.000666 AC: 57 AN: 85542

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53322

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5764

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111032

Other (OTH) AF: 0.000929 AC: 56 AN: 60300

GnomAD4 genome AF: 0.000709 AC: 108 AN: 152316 Hom.: 2 Cov.: 32 AF XY: 0.000779 AC XY: 58 AN XY: 74486

African (AFR) AF: 0.00 AC: 0 AN: 41564

American (AMR) AF: 0.00 AC: 0 AN: 15308

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.0197 AC: 102 AN: 5176

South Asian (SAS) AF: 0.00104 AC: 5 AN: 4818

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10630

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 294

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68026

Other (OTH) AF: 0.000473 AC: 1 AN: 2116

Alfa AF: 0.000214 Hom.: 0

Bravo AF: 0.000620

Asia WGS AF: 0.00924 AC: 32 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Epileptic encephalopathy Benign:1

Nov 15, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

RYR3-related disorder Benign:1

Jun 17, 2019

PreventionGenetics, part of Exact Sciences

Significance: Benign

Review Status: no assertion criteria provided

Collection Method: clinical testing

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.47
CADD	Benign	2.2
DANN	Benign	0.82
PhyloP100		0.14
Mutation Taster		=100/0	polymorphism

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: rs139287308; hg19: chr15-34018634; COSMIC: COSV63109824; COSMIC: COSV63109824;