11-47438007-G-A

Variant names:

Variant summary

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

The NM_005055.5(RAPSN):c.1207C>T(p.Arg403Cys) variant causes a missense change. The variant allele was found at a frequency of 0.00000286 in 1,398,110 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. R403H) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000029 ( 0 hom. )

Consequence

RAPSN
NM_005055.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.98

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

fetal akinesia deformation sequence 2
Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
neuromuscular disease
Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics
congenital myasthenic syndrome 11
Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia, Genomics England PanelApp
fetal akinesia deformation sequence 1
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
postsynaptic congenital myasthenic syndrome
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

RAPSN links:

LOC124902673 (HGNC:):

LOC124902673 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAPSN	NM_005055.5 link	c.1207C>T	p.Arg403Cys	missense_variant	Exon 8 of 8	ENST00000298854.7	NP_005046.2	Q13702-1A0A0S2Z4F8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
RAPSN	ENST00000298854.7 link	c.1207C>T	p.Arg403Cys	missense_variant	Exon 8 of 8	1	NM_005055.5	ENSP00000298854.2	Q13702-1
RAPSN	ENST00000352508.7 link	c.1030C>T	p.Arg344Cys	missense_variant	Exon 6 of 6	1		ENSP00000298853.3	Q13702-2
RAPSN	ENST00000524487.5 link	c.1048C>T	p.Arg350Cys	missense_variant	Exon 7 of 7	5		ENSP00000435551.2	E9PJP9
RAPSN	ENST00000528356.1 link	n.162C>T		non_coding_transcript_exon_variant	Exon 2 of 2	3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000640

AC:

AN:

156278

AF XY:

0.0000122

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000166

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000286

AC:

AN:

1398110

Hom.:

Cov.:

AF XY:

0.00000290

AC XY:

AN XY:

689548

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31550

American (AMR)

AF:

0.00

AC:

AN:

35702

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35740

South Asian (SAS)

AF:

0.00

AC:

AN:

79166

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49268

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4652

European-Non Finnish (NFE)

AF:

0.00000371

AC:

AN:

1078968

Other (OTH)

AF:

0.00

AC:

AN:

57882

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.488

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

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

Uncertain:1

Dec 15, 2021

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 cysteine, which is neutral and slightly polar, at codon 403 of the RAPSN protein (p.Arg403Cys). The frequency data for this variant in the population databases is considered unreliable, as metrics indicate poor data quality at this position in the gnomAD database. This variant has not been reported in the literature in individuals affected with RAPSN-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). 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

0.28

BayesDel_addAF

Benign

-0.014

BayesDel_noAF

Benign

-0.26

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.17

T;.;.

Eigen

Pathogenic

0.75

Eigen_PC

Uncertain

0.66

FATHMM_MKL

Uncertain

0.85

LIST_S2

Uncertain

0.88

D;D;D

M_CAP

Uncertain

0.20

MetaRNN

Uncertain

0.46

T;T;T

MetaSVM

Uncertain

0.047

MutationAssessor

Pathogenic

3.9

H;.;.

PhyloP100

6.0

PrimateAI

Uncertain

0.52

PROVEAN

Uncertain

-2.4

N;N;.

REVEL

Uncertain

0.29

Sift

Uncertain

0.0040

D;D;.

Sift4G

Uncertain

0.0050

D;D;D

Polyphen

1.0

D;D;.

Vest4

0.22

MutPred

0.38

Loss of MoRF binding (P = 0.0115);.;.;

MVP

0.80

MPC

0.72

ClinPred

0.99

GERP RS

4.4

Varity_R

0.17

gMVP

0.68

Mutation Taster

=76/24

polymorphism

(source)

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

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11-47438007-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over