rs780970109

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PP3_Strong

The NM_001036.6(RYR3):​c.962G>A​(p.Arg321Gln) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000301 in 1,460,420 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R321W) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)
Exomes 𝑓: 0.000030 ( 0 hom. )

Consequence

RYR3
NM_001036.6 missense

Scores

8
7
3

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 9.60

Publications

1 publications found
Variant links:
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

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.94

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
RYR3NM_001036.6 linkc.962G>A p.Arg321Gln missense_variant Exon 10 of 104 ENST00000634891.2 NP_001027.3 Q15413-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
RYR3ENST00000634891.2 linkc.962G>A p.Arg321Gln missense_variant Exon 10 of 104 1 NM_001036.6 ENSP00000489262.1 Q15413-1
RYR3ENST00000389232.9 linkc.962G>A p.Arg321Gln missense_variant Exon 10 of 104 5 ENSP00000373884.5 A0A0X1KG73
RYR3ENST00000415757.7 linkc.962G>A p.Arg321Gln missense_variant Exon 10 of 103 2 ENSP00000399610.3 Q15413-2
RYR3ENST00000634418.1 linkc.962G>A p.Arg321Gln missense_variant Exon 10 of 102 5 ENSP00000489529.1 A0A0U1RRH1

Frequencies

GnomAD3 genomes
Cov.:
33
GnomAD2 exomes
AF:
0.00000813
AC:
2
AN:
245884
AF XY:
0.00
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000563
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000900
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000301
AC:
44
AN:
1460420
Hom.:
0
Cov.:
31
AF XY:
0.0000303
AC XY:
22
AN XY:
726310
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
33456
American (AMR)
AF:
0.00
AC:
0
AN:
44580
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26092
East Asian (EAS)
AF:
0.0000252
AC:
1
AN:
39638
South Asian (SAS)
AF:
0.00
AC:
0
AN:
85896
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53354
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5764
European-Non Finnish (NFE)
AF:
0.0000378
AC:
42
AN:
1111302
Other (OTH)
AF:
0.0000166
AC:
1
AN:
60338
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.483
Heterozygous variant carriers
0
3
6
8
11
14
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
4
8
12
16
20
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
33
Alfa
AF:
0.0000329
Hom.:
0
Asia WGS
AF:
0.000289
AC:
1
AN:
3478

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:2
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not specified Uncertain:1
Jan 03, 2025
Ambry Genetics
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

The c.962G>A (p.R321Q) alteration is located in exon 10 (coding exon 10) of the RYR3 gene. This alteration results from a G to A substitution at nucleotide position 962, causing the arginine (R) at amino acid position 321 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Epileptic encephalopathy Uncertain:1
Jan 06, 2025
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with glutamine, which is neutral and polar, at codon 321 of the RYR3 protein (p.Arg321Gln). This variant is present in population databases (no rsID available, gnomAD 0.006%). This variant has not been reported in the literature in individuals affected with RYR3-related conditions. ClinVar contains an entry for this variant (Variation ID: 579964). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.12
BayesDel_addAF
Uncertain
0.10
D
BayesDel_noAF
Uncertain
0.080
CADD
Uncertain
26
DANN
Pathogenic
1.0
DEOGEN2
Uncertain
0.74
D;.;.;.;.
Eigen
Pathogenic
0.79
Eigen_PC
Pathogenic
0.78
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.99
D;D;D;D;D
M_CAP
Uncertain
0.17
D
MetaRNN
Pathogenic
0.94
D;D;D;D;D
MetaSVM
Pathogenic
0.80
D
MutationAssessor
Uncertain
2.1
M;M;.;.;.
PhyloP100
9.6
PrimateAI
Uncertain
0.54
T
PROVEAN
Uncertain
-3.5
.;D;D;.;.
REVEL
Pathogenic
0.77
Sift
Benign
0.080
.;T;T;.;.
Polyphen
1.0
D;D;.;.;.
Vest4
0.92
MVP
0.77
MPC
0.77
ClinPred
0.99
D
GERP RS
5.3
Varity_R
0.36
gMVP
0.62
Mutation Taster
=32/68
disease causing

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

Other links and lift over

dbSNP: rs780970109; hg19: chr15-33842507; API