16-66922185-C-G

Variant names:

• chr16-66922185-C-G
• rs749623203
• NM_004165.3:c.818G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_004165.3(RRAD):​c.818G>C​(p.Ser273Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,848 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S273N) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: RRAD NM_004165.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.57
• Publications: 0 publications found

Genes affected

RRAD (HGNC:10446): (RRAD, Ras related glycolysis inhibitor and calcium channel regulator) Predicted to enable GTP binding activity and calcium channel regulator activity. Predicted to be involved in small GTPase mediated signal transduction. Predicted to be located in cytosol. Predicted to be active in plasma membrane. Implicated in type 2 diabetes mellitus. Biomarker of congestive heart failure. [provided by Alliance of Genome Resources, Apr 2022]

RRAD Gene-Disease associations (from GenCC):

• Brugada syndrome

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004165.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RRAD	NM_004165.3	MANE Select	c.818G>C	p.Ser273Thr	missense	Exon 5 of 5	NP_004156.1	P55042
	RRAD	NM_001128850.2		c.818G>C	p.Ser273Thr	missense	Exon 5 of 5	NP_001122322.1	P55042

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RRAD	ENST00000299759.11	TSL:1 MANE Select	c.818G>C	p.Ser273Thr	missense	Exon 5 of 5	ENSP00000299759.6	P55042
	RRAD	ENST00000889788.1		c.818G>C	p.Ser273Thr	missense	Exon 4 of 4	ENSP00000559848.1
	RRAD	ENST00000889790.1		c.818G>C	p.Ser273Thr	missense	Exon 5 of 5	ENSP00000559849.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461848 Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2 AN XY: 727218

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53412

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000270 AC: 3 AN: 1111978

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

Alfa AF: 0.0000193 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.31
BayesDel_addAF	Uncertain	0.057	T
BayesDel_noAF	Benign	-0.16
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D
Eigen	Pathogenic	0.84
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Benign	0.81	T
M_CAP	Uncertain	0.087	D
MetaRNN	Uncertain	0.53	D
MetaSVM	Uncertain	-0.046	T
MutationAssessor	Uncertain	2.4	M
PhyloP100		7.6
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.39
Sift	Uncertain	0.0030	D
Sift4G	Benign	0.097	T
Polyphen		0.96	D
Vest4		0.50
MutPred		0.34		Loss of sheet (P = 0.0457)
MVP		0.90
MPC		1.4
ClinPred		0.98	D
GERP RS		5.9
Varity_R		0.61
gMVP		0.52
Mutation Taster		=36/64	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: rs749623203; hg19: chr16-66956088;