rs786205901

Variant names:

• chr1-180803598-T-C
• rs786205901
• NM_004736.4:c.434T>C

Variant summary

Our verdict is Likely pathogenic. The variant received 7 ACMG points: 7P and 0B. PM2 PP3_Strong PP5

The NM_004736.4(XPR1):​c.434T>C​(p.Leu145Pro) 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. 13/22 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: XPR1 NM_004736.4 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.57
• Publications: 2 publications found

Genes affected

XPR1 (HGNC:12827): (xenotropic and polytropic retrovirus receptor 1) The protein encoded by this gene is a receptor for the xenotropic and polytropic classes of murine leukemia viruses. The encoded protein is involved in phosphate homeostasis by mediating phosphate export from the cell. Defects in this gene have been associated with idiopathic basal ganglia calcification-6. [provided by RefSeq, Jun 2016]

XPR1 Gene-Disease associations (from GenCC):

• basal ganglia calcification, idiopathic, 6

  Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Illumina, Genomics England PanelApp, PanelApp Australia, Ambry Genetics
• bilateral striopallidodentate calcinosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_pathogenic. The variant received 7 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.982
• PP5: Variant 1-180803598-T-C is Pathogenic according to our data. Variant chr1-180803598-T-C is described in ClinVar as Pathogenic. ClinVar VariationId is 192303.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
XPR1	NM_004736.4	c.434T>C	p.Leu145Pro	missense_variant	Exon 4 of 15	ENST00000367590.9	NP_004727.2
XPR1	NM_001135669.2	c.434T>C	p.Leu145Pro	missense_variant	Exon 4 of 14		NP_001129141.1
XPR1	NM_001328662.2	c.434T>C	p.Leu145Pro	missense_variant	Exon 4 of 11		NP_001315591.1
XPR1	NR_137330.2	n.614T>C		non_coding_transcript_exon_variant	Exon 4 of 13

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
XPR1	ENST00000367590.9	c.434T>C	p.Leu145Pro	missense_variant	Exon 4 of 15	1	NM_004736.4	ENSP00000356562.4
XPR1	ENST00000367589.3	c.434T>C	p.Leu145Pro	missense_variant	Exon 4 of 14	1		ENSP00000356561.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Basal ganglia calcification, idiopathic, 6 Pathogenic:1

Jun 01, 2015

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	0.42	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Pathogenic	0.98	D;.
Eigen	Pathogenic	0.99
Eigen_PC	Pathogenic	0.92
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Pathogenic	0.99	D;D
M_CAP	Uncertain	0.26	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Uncertain	0.68	D
MutationAssessor	Pathogenic	3.8	H;H
PhyloP100		7.6
PrimateAI	Pathogenic	0.94	D
PROVEAN	Pathogenic	-6.3	D;D
REVEL	Pathogenic	0.92
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;D
Vest4		0.99
MutPred		0.91		Loss of stability (P = 0.0126);Loss of stability (P = 0.0126);
MVP		0.80
MPC		2.4
ClinPred		1.0	D
GERP RS		5.9
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.7
Varity_R		0.99
gMVP		1.0
Mutation Taster		=1/99	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: rs786205901; hg19: chr1-180772734;