rs878853176

Positions:

• chr3-4815154-T-G

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2 PP2 PP3 PP5

The NM_001378452.1(ITPR1):​c.7803T>G​(p.Phe2601Leu) variant causes a missense change involving the alteration of a non-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: 32)
• Consequence: ITPR1 NM_001378452.1 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 0.692

Genes affected

ITPR1 (HGNC:6180): (inositol 1,4,5-trisphosphate receptor type 1) This gene encodes an intracellular receptor for inositol 1,4,5-trisphosphate. Upon stimulation by inositol 1,4,5-trisphosphate, this receptor mediates calcium release from the endoplasmic reticulum. Mutations in this gene cause spinocerebellar ataxia type 15, a disease associated with an heterogeneous group of cerebellar disorders. Multiple transcript variants have been identified for this gene. [provided by RefSeq, Nov 2009]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ITPR1. . Gene score misZ 5.5951 (greater than the threshold 3.09). Trascript score misZ 6.2026 (greater than threshold 3.09). GenCC has associacion of gene with spinocerebellar ataxia type 15/16, aniridia-cerebellar ataxia-intellectual disability syndrome, spinocerebellar ataxia type 29.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.778
• PP5: Variant 3-4815154-T-G is Pathogenic according to our data. Variant chr3-4815154-T-G is described in ClinVar as [Pathogenic]. Clinvar id is 235920.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr3-4815154-T-G is described in Lovd as [Likely_pathogenic]. Variant chr3-4815154-T-G is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITPR1	NM_001378452.1	c.7803T>G	p.Phe2601Leu	missense_variant	59/62	ENST00000649015.2	NP_001365381.1
LOC124906209	XR_007095795.1	n.725-723A>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITPR1	ENST00000649015.2	c.7803T>G	p.Phe2601Leu	missense_variant	59/62		NM_001378452.1	ENSP00000497605
	ENST00000693140.1	n.581+10592A>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Gillespie syndrome Pathogenic:1

Pathogenic, no assertion criteria provided

literature only

OMIM

Jul 20, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.49
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.97	.;.;.;.;.;.;.;D;.;.;.;.;.;.
Eigen	Uncertain	0.40
Eigen_PC	Uncertain	0.24
FATHMM_MKL	Uncertain	0.86	D
LIST_S2	Pathogenic	0.98	D;D;D;D;D;D;D;D;D;.;D;.;.;D
M_CAP	Pathogenic	0.95	D
MetaRNN	Pathogenic	0.78	D;D;D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.2	.;.;.;.;.;.;.;M;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D;D;D
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-5.7	D;D;.;D;.;N;.;.;.;D;.;.;.;.
REVEL	Pathogenic	0.82
Sift	Pathogenic	0.0	D;D;.;D;.;D;.;.;.;D;.;.;.;.
Sift4G	Pathogenic	0.0	D;D;.;D;.;D;.;.;.;D;.;.;.;.
Polyphen		1.0	.;.;.;.;.;D;.;D;.;.;.;.;.;.
Vest4		0.92
MutPred		0.28		.;.;.;.;.;.;.;Gain of disorder (P = 0.1414);.;.;.;.;.;.;
MVP		0.95
MPC		2.1
ClinPred		0.98	D
GERP RS		1.0
Varity_R		0.89
gMVP		0.99

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

Other links and lift over

dbSNP: rs878853176; hg19: chr3-4856838;