rs7975290

Positions:

• chr12-26460985-A-G
• chr12-26460985-A-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_002223.4(ITPR2):​c.6342+14311T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0495 in 152,194 control chromosomes in the GnomAD database, including 243 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.050 (243 hom., cov: 32)
• Consequence: ITPR2 NM_002223.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.350

Genes affected

ITPR2 (HGNC:6181): (inositol 1,4,5-trisphosphate receptor type 2) The protein encoded by this gene belongs to the inositol 1,4,5-triphosphate receptor family, whose members are second messenger intracellular calcium release channels. These proteins mediate a rise in cytoplasmic calcium in response to receptor activated production of inositol triphosphate. Inositol triphosphate receptor-mediated signaling is involved in many processes including cell migration, cell division, smooth muscle contraction, and neuronal signaling. This protein is a type 2 receptor that consists of a cytoplasmic amino-terminus that binds inositol triphosphate, six membrane-spanning helices that contribute to the ion pore, and a short cytoplasmic carboxy-terminus. A mutation in this gene has been associated with anhidrosis, suggesting that intracellular calcium release mediated by this protein is required for eccrine sweat production. [provided by RefSeq, Apr 2015]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.91).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.0994 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ITPR2	NM_002223.4	c.6342+14311T>C		intron_variant		ENST00000381340.8	NP_002214.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ITPR2	ENST00000381340.8	c.6342+14311T>C		intron_variant		1	NM_002223.4	ENSP00000370744	P1
ITPR2	ENST00000451599.6	c.*861+14311T>C		intron_variant, NMD_transcript_variant		1		ENSP00000408287

Frequencies

GnomAD3 genomes AF: 0.0495 AC: 7528 AN: 152076 Hom.: 244 Cov.: 32

Gnomad AFR AF: 0.0395

Gnomad AMI AF: 0.00548

Gnomad AMR AF: 0.0382

Gnomad ASJ AF: 0.0916

Gnomad EAS AF: 0.0667

Gnomad SAS AF: 0.106

Gnomad FIN AF: 0.0264

Gnomad MID AF: 0.120

Gnomad NFE AF: 0.0542

Gnomad OTH AF: 0.0593

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0495 AC: 7534 AN: 152194 Hom.: 243 Cov.: 32 AF XY: 0.0492 AC XY: 3658 AN XY: 74412

Gnomad4 AFR AF: 0.0394

Gnomad4 AMR AF: 0.0382

Gnomad4 ASJ AF: 0.0916

Gnomad4 EAS AF: 0.0667

Gnomad4 SAS AF: 0.107

Gnomad4 FIN AF: 0.0264

Gnomad4 NFE AF: 0.0542

Gnomad4 OTH AF: 0.0605

Alfa AF: 0.0498 Hom.: 123

Bravo AF: 0.0493

Asia WGS AF: 0.0830 AC: 288 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.78
DANN	Benign	0.50

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: rs7975290; hg19: chr12-26613918;