rs121909255

Positions:

chr11-47447859-C-T

Variant summary

Our verdict is Pathogenic. Variant got 16 ACMG points: 16P and 0B. PM1PM2PP3_StrongPP5_Very_Strong

The ENST00000298854.7(RAPSN):c.484G>A(p.Glu162Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,613,322 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 Pathogenic (★★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000075 ( 0 hom. )

Consequence

RAPSN
ENST00000298854.7 missense

Scores

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:3

Conservation

PhyloP100: 7.36

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 16 ACMG points.

PM1

In a hotspot region, there are 2 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 3 uncertain in ENST00000298854.7

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.984

PP5

Variant 11-47447859-C-T is Pathogenic according to our data. Variant chr11-47447859-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 8056.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr11-47447859-C-T is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
RAPSN	NM_005055.5 linkuse as main transcript	c.484G>A	p.Glu162Lys	missense_variant	2/8	ENST00000298854.7	NP_005046.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
RAPSN	ENST00000298854.7 linkuse as main transcript	c.484G>A	p.Glu162Lys	missense_variant	2/8	1	NM_005055.5	ENSP00000298854	P1	Q13702-1
RAPSN	ENST00000352508.7 linkuse as main transcript	c.484G>A	p.Glu162Lys	missense_variant	2/6	1		ENSP00000298853		Q13702-2
RAPSN	ENST00000529341.1 linkuse as main transcript	c.484G>A	p.Glu162Lys	missense_variant	2/5	1		ENSP00000431732
RAPSN	ENST00000524487.5 linkuse as main transcript	c.484G>A	p.Glu162Lys	missense_variant	2/7	5		ENSP00000435551

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000483

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000242

AC:

AN:

248044

Hom.:

AF XY:

0.0000372

AC XY:

AN XY:

134550

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000290

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000164

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000179

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000753

AC:

AN:

1461134

Hom.:

Cov.:

AF XY:

0.00000825

AC XY:

AN XY:

726848

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000756

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152188

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74346

show subpopulations

Gnomad4 AFR

AF:

0.0000483

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ExAC

AF:

0.00000824

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000594

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

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

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Nov 24, 2023

This sequence change replaces glutamic acid, which is acidic and polar, with lysine, which is basic and polar, at codon 162 of the RAPSN protein (p.Glu162Lys). This variant is present in population databases (rs121909255, gnomAD 0.02%). This missense change has been observed in individual(s) with fetal akinesia deformation sequence, arthrogryposis multiplex congenita, and congenital myasthenic syndrome (PMID: 17594401, 26147564, 26910802, 28495245). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 8056). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt RAPSN protein function with a negative predictive value of 80%. Experimental studies have shown that this missense change affects RAPSN function (PMID: 17594401). For these reasons, this variant has been classified as Pathogenic. -

Fetal akinesia deformation sequence 2

Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Baylor Genetics

Mar 01, 2024

- -

Congenital myasthenic syndrome 11

Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 01, 2007

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.92

BayesDel_addAF

Pathogenic

0.31

BayesDel_noAF

Pathogenic

0.47

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.39

T;.;.;.

Eigen

Uncertain

0.44

Eigen_PC

Uncertain

0.46

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Pathogenic

0.97

D;D;D;D

M_CAP

Pathogenic

0.31

MetaRNN

Pathogenic

0.98

D;D;D;D

MetaSVM

Uncertain

0.78

MutationAssessor

Uncertain

2.4

M;M;.;.

MutationTaster

Benign

1.0

A;A;A;A

PrimateAI

Pathogenic

0.83

PROVEAN

Uncertain

-3.4

D;D;D;D

REVEL

Pathogenic

0.74

Sift

Pathogenic

0.0

D;D;D;D

Sift4G

Uncertain

0.014

D;D;D;D

Polyphen

0.62

P;P;.;D

Vest4

0.96

MutPred

0.93

Gain of methylation at E162 (P = 0.0127);Gain of methylation at E162 (P = 0.0127);Gain of methylation at E162 (P = 0.0127);Gain of methylation at E162 (P = 0.0127);

MVP

0.94

MPC

0.63

ClinPred

0.97

GERP RS

5.1

Varity_R

0.85

gMVP

0.81

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