Genetic Variant RCN3:p.Arg167Trp (chr19-49537086-C-T) – ACMG Classification: Uncertain_significance (3 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_020650.3(RCN3):c.499C>T(p.Arg167Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000277 in 1,590,146 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 (★).

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 31)

Exomes 𝑓: 0.000026 ( 0 hom. )

Consequence

RCN3
NM_020650.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.895

Variant links:

Genes affected

RCN3 (HGNC:21145): (reticulocalbin 3) Enables calcium ion binding activity. Involved in several processes, including collagen biosynthetic process; positive regulation of peptidase activity; and regulation of protein kinase B signaling. Located in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

RCN3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.749

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RCN3	NM_020650.3 link	c.499C>T	p.Arg167Trp	missense_variant	Exon 4 of 7	ENST00000270645.8	NP_065701.2	Q96D15

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RCN3	ENST00000270645.8 link	c.499C>T	p.Arg167Trp	missense_variant	Exon 4 of 7	1	NM_020650.3	ENSP00000270645.2	Q96D15
RCN3	ENST00000598833.1 link	c.346C>T	p.Arg116Trp	missense_variant	Exon 3 of 4	3		ENSP00000470540.1	M0QZH0
RCN3	ENST00000597801.1 link	c.405C>T	p.Leu135Leu	synonymous_variant	Exon 4 of 4	5		ENSP00000469727.1	M0QYB8
RCN3	ENST00000593644.1 link	n.*2C>T		downstream_gene_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152184

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000197

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000193

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000214

AC:

AN:

234006

Hom.:

AF XY:

0.0000315

AC XY:

AN XY:

127042

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000623

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000373

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000264

AC:

AN:

1437962

Hom.:

Cov.:

AF XY:

0.0000238

AC XY:

AN XY:

714612

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000236

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000534

Gnomad4 SAS exome

AF:

0.0000239

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000255

Gnomad4 OTH exome

AF:

0.0000676

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152184

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74352

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000197

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000193

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Bravo

AF:

0.0000604

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000247

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 28, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.499C>T (p.R167W) alteration is located in exon 4 (coding exon 3) of the RCN3 gene. This alteration results from a C to T substitution at nucleotide position 499, causing the arginine (R) at amino acid position 167 to be replaced by a tryptophan (W). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.87

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.39

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.082

T;.

Eigen

Uncertain

0.30

Eigen_PC

Benign

0.14

FATHMM_MKL

Benign

0.59

LIST_S2

Pathogenic

1.0

D;D

M_CAP

Uncertain

0.23

MetaRNN

Pathogenic

0.75

D;D

MetaSVM

Uncertain

-0.27

MutationAssessor

Pathogenic

3.7

H;.

PrimateAI

Uncertain

0.67

PROVEAN

Pathogenic

-7.5

D;.

REVEL

Uncertain

0.53

Sift

Pathogenic

0.0

D;.

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

D;.

Vest4

0.91

MVP

0.94

MPC

1.8

ClinPred

1.0

GERP RS

2.8

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.85

gMVP

0.82

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over