11-47448906-T-A

Variant names:

• chr11-47448906-T-A
• rs747627949
• NM_005055.5:c.59A>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_005055.5(RAPSN):​c.59A>T​(p.Asn20Ile) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000131 in 152,206 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 0.000013 (0 hom., cov: 33)
• Consequence: RAPSN NM_005055.5 missense
• Clinical Significance: Uncertain significance criteria provided, multiple submitters, no conflicts U:3
• Conservation: PhyloP100: 7.67
• Publications: 0 publications found

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: Labcorp Genetics (formerly Invitae), G2P
• neuromuscular disease

  Inheritance: AR Classification: DEFINITIVE Submitted by: Ambry Genetics
• congenital myasthenic syndrome 11

  Inheritance: AR Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae), 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

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.89

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005055.5. 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
	RAPSN	NM_005055.5	MANE Select	c.59A>T	p.Asn20Ile	missense	Exon 1 of 8	NP_005046.2
	RAPSN	NM_001440490.1		c.59A>T	p.Asn20Ile	missense	Exon 1 of 8	NP_001427419.1
	RAPSN	NM_001440491.1		c.59A>T	p.Asn20Ile	missense	Exon 1 of 8	NP_001427420.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RAPSN	ENST00000298854.7	TSL:1 MANE Select	c.59A>T	p.Asn20Ile	missense	Exon 1 of 8	ENSP00000298854.2	Q13702-1
	RAPSN	ENST00000352508.7	TSL:1	c.59A>T	p.Asn20Ile	missense	Exon 1 of 6	ENSP00000298853.3	Q13702-2
	RAPSN	ENST00000529341.1	TSL:1	c.59A>T	p.Asn20Ile	missense	Exon 1 of 5	ENSP00000431732.1	E9PK11

Frequencies

GnomAD3 genomes AF: 0.0000131 AC: 2 AN: 152206 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000482

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

GnomAD2 exomes AF: 0.00000795 AC: 2 AN: 251474 AF XY: 0.00

Gnomad AFR exome AF: 0.000123

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: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 32

GnomAD4 genome AF: 0.0000131 AC: 2 AN: 152206 Hom.: 0 Cov.: 33 AF XY: 0.00 AC XY: 0 AN XY: 74358

African (AFR) AF: 0.0000482 AC: 2 AN: 41462

American (AMR) AF: 0.00 AC: 0 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5180

South Asian (SAS) AF: 0.00 AC: 0 AN: 4836

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10624

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000378

ExAC AF: 0.0000165 AC: 2

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, multiple submitters, no conflicts

Pathogenic	VUS	Benign	Condition
-	1	-	Congenital myasthenic syndrome (1)
-	1	-	Fetal akinesia deformation sequence 1;C4225367:Congenital myasthenic syndrome 11 (1)
-	1	-	not provided (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.65
BayesDel_addAF	Uncertain	0.089	D
BayesDel_noAF	Uncertain	0.13
CADD	Pathogenic	28
DANN	Uncertain	0.99
DEOGEN2	Benign	0.36	T
Eigen	Pathogenic	0.70
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.95	D
M_CAP	Pathogenic	0.32	D
MetaRNN	Pathogenic	0.89	D
MetaSVM	Uncertain	0.61	D
MutationAssessor	Benign	1.8	L
PhyloP100		7.7
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-3.8	D
REVEL	Pathogenic	0.84
Sift	Uncertain	0.010	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.99	D
Vest4		0.88
MutPred		0.67		Loss of disorder (P = 0.0239)
MVP		0.96
MPC		0.67
ClinPred		0.97	D
GERP RS		5.6
PromoterAI		-0.044	Neutral
Varity_R		0.61
gMVP		0.45
Mutation Taster		=21/79	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: rs747627949; hg19: chr11-47470458;