11-47438024-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_005055.5(RAPSN):c.1190G>A(p.Arg397Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000119 in 1,550,024 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R397W) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00059 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000068 ( 0 hom. )

Consequence

RAPSN
NM_005055.5 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:5B:2

Conservation

PhyloP100: 4.42

Variant links:

Genes affected

RAPSN (HGNC:9863): (receptor associated protein of the synapse) This gene encodes a member of a family of proteins that are receptor associated proteins of the synapse. The encoded protein contains a conserved cAMP-dependent protein kinase phosphorylation site, and plays a critical role in clustering and anchoring nicotinic acetylcholine receptors at synaptic sites by linking the receptors to the underlying postsynaptic cytoskeleton, possibly by direct association with actin or spectrin. Mutations in this gene may play a role in postsynaptic congenital myasthenic syndromes. Alternatively spliced transcript variants encoding multiple isoforms have been observed for this gene. [provided by RefSeq, Apr 2011]

RAPSN links:

LOC124902673 (HGNC:):

LOC124902673 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.015615672).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAPSN	NM_005055.5 linkuse as main transcript	c.1190G>A	p.Arg397Gln	missense_variant	8/8	ENST00000298854.7
LOC124902673	XR_007062669.1 linkuse as main transcript	n.144+257C>T		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAPSN	ENST00000298854.7 linkuse as main transcript	c.1190G>A	p.Arg397Gln	missense_variant	8/8	1	NM_005055.5	P1	Q13702-1
RAPSN	ENST00000352508.7 linkuse as main transcript	c.1013G>A	p.Arg338Gln	missense_variant	6/6	1			Q13702-2
RAPSN	ENST00000524487.5 linkuse as main transcript	c.1031G>A	p.Arg344Gln	missense_variant	7/7	5
RAPSN	ENST00000528356.1 linkuse as main transcript	n.145G>A		non_coding_transcript_exon_variant	2/2	3

Frequencies

GnomAD3 genomes

AF:

0.000591

AC:

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00198

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000327

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.000957

GnomAD3 exomes

AF:

0.000186

AC:

AN:

156082

Hom.:

AF XY:

0.000146

AC XY:

AN XY:

82152

show subpopulations

Gnomad AFR exome

AF:

0.00217

Gnomad AMR exome

AF:

0.000162

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000439

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000665

Gnomad OTH exome

AF:

0.000227

GnomAD4 exome

AF:

0.0000680

AC:

AN:

1397746

Hom.:

Cov.:

AF XY:

0.0000580

AC XY:

AN XY:

689382

show subpopulations

Gnomad4 AFR exome

AF:

0.00187

Gnomad4 AMR exome

AF:

0.000196

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000126

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000120

Gnomad4 OTH exome

AF:

0.000259

GnomAD4 genome

AF:

0.000591

AC:

AN:

152278

Hom.:

Cov.:

AF XY:

0.000658

AC XY:

AN XY:

74442

show subpopulations

Gnomad4 AFR

AF:

0.00197

Gnomad4 AMR

AF:

0.000327

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000947

Alfa

AF:

0.000178

Hom.:

Bravo

AF:

0.000688

ESP6500AA

AF:

0.00156

AC:

ESP6500EA

AF:

0.000137

AC:

ExAC

AF:

0.000152

AC:

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:5Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Feb 06, 2020	In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	Revvity Omics, Revvity	Jul 21, 2020	- -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 05, 2021

The c.1190G>A (p.R397Q) alteration is located in exon 8 (coding exon 8) of the RAPSN gene. This alteration results from a G to A substitution at nucleotide position 1190, causing the arginine (R) at amino acid position 397 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Fetal akinesia deformation sequence 1

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Congenital myasthenic syndrome 11

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

Fetal akinesia deformation sequence 1;C4225367:Congenital myasthenic syndrome 11

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Invitae

Jan 25, 2024

- -

Congenital myasthenic syndrome

Benign:1

Likely benign, no assertion criteria provided

clinical testing

Natera, Inc.

Nov 11, 2019

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Uncertain

-0.010

Cadd

Uncertain

Dann

Uncertain

1.0

DEOGEN2

Benign

0.043

T;.;.

Eigen

Benign

-0.0016

Eigen_PC

Benign

0.19

FATHMM_MKL

Uncertain

0.84

LIST_S2

Uncertain

0.90

D;D;D

M_CAP

Benign

0.040

MetaRNN

Benign

0.016

T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.78

N;.;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Benign

0.37

PROVEAN

Benign

-1.3

N;N;N

REVEL

Benign

0.051

Sift

Benign

0.14

T;D;D

Sift4G

Benign

0.11

T;T;T

Polyphen

0.018

B;B;.

Vest4

0.21

MVP

0.88

MPC

0.24

ClinPred

0.028

GERP RS

5.3

Varity_R

0.13

gMVP

0.43

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