rs104894883

Variant names:

• chrX-43949899-G-A
• rs104894883
• NM_000266.4:c.302C>T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PP2 PP3_Strong PP5

The NM_000266.4(NDP):​c.302C>T​(p.Ser101Phe) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 23)
• Consequence: NDP NM_000266.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 9.56
• Publications: 4 publications found

Genes affected

NDP (HGNC:7678): (norrin cystine knot growth factor NDP) This gene encodes a secreted protein with a cystein-knot motif that activates the Wnt/beta-catenin pathway. The protein forms disulfide-linked oligomers in the extracellular matrix. Mutations in this gene result in Norrie disease and X-linked exudative vitreoretinopathy. [provided by RefSeq, Feb 2009]

NDP-AS1 (HGNC:40395): (NDP antisense RNA 1)

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_000266.4
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 32 curated pathogenic missense variants (we use a threshold of 10). The gene has 2 curated benign missense variants. Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to Norrie disease, exudative vitreoretinopathy 2, X-linked, exudative vitreoretinopathy, persistent hyperplastic primary vitreous.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.959
• PP5: Variant X-43949899-G-A is Pathogenic according to our data. Variant chrX-43949899-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 10699.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NDP	NM_000266.4	c.302C>T	p.Ser101Phe	missense_variant	Exon 3 of 3	ENST00000642620.1	NP_000257.1
NDP-AS1	NR_046631.1	n.168G>A		non_coding_transcript_exon_variant	Exon 1 of 6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NDP	ENST00000642620.1	c.302C>T	p.Ser101Phe	missense_variant	Exon 3 of 3		NM_000266.4	ENSP00000495972.1
NDP	ENST00000647044.1	c.302C>T	p.Ser101Phe	missense_variant	Exon 4 of 4			ENSP00000495811.1
NDP-AS1	ENST00000435093.1	n.168G>A		non_coding_transcript_exon_variant	Exon 1 of 5	3
NDP	ENST00000470584.1	n.346C>T		non_coding_transcript_exon_variant	Exon 3 of 3	2

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Atrophia bulborum hereditaria Pathogenic:1

Jan 01, 1997

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.56	D
BayesDel_noAF	Pathogenic	0.56
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.75	D;D;D
FATHMM_MKL	Pathogenic	0.97	D
LIST_S2	Uncertain	0.94	.;.;D
M_CAP	Pathogenic	0.90	D
MetaRNN	Pathogenic	0.96	D;D;D
MetaSVM	Uncertain	0.62	D
MutationAssessor	Benign	0.97	L;L;L
PhyloP100		9.6
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	1.2	.;N;.
REVEL	Pathogenic	0.73
Sift	Pathogenic	0.0	.;D;.
Sift4G	Pathogenic	0.0	.;D;.
Polyphen		1.0	D;D;D
Vest4		0.92
MutPred		0.78		Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);Gain of sheet (P = 0.0011);
MVP		1.0
MPC		1.5
ClinPred		0.82	D
GERP RS		6.0
Varity_R		0.93
gMVP		0.97
Mutation Taster		=7/93	disease causing (ClinVar)

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: rs104894883; hg19: chrX-43809145;