3-122279258-T-C

Variant summary

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

The NM_000388.4(CASR):c.1609-2855T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.922 in 152,212 control chromosomes in the GnomAD database, including 64,948 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 0.92 (64948 hom., cov: 31)
• Consequence: CASR NM_000388.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.951

Genes affected

CASR (HGNC:1514): (calcium sensing receptor) The protein encoded by this gene is a plasma membrane G protein-coupled receptor that senses small changes in circulating calcium concentration. The encoded protein couples this information to intracellular signaling pathways that modify parathyroid hormone secretion or renal cation handling, and thus this protein plays an essential role in maintaining mineral ion homeostasis. Mutations in this gene are a cause of familial hypocalciuric hypercalcemia, neonatal severe hyperparathyroidism, and autosomal dominant hypocalcemia. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.97).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.959 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CASR	NM_000388.4	c.1609-2855T>C		intron_variant		ENST00000639785.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CASR	ENST00000639785.2	c.1609-2855T>C		intron_variant		1	NM_000388.4	P1
CASR	ENST00000498619.4	c.1609-2825T>C		intron_variant		1
CASR	ENST00000490131.7	c.1378-2855T>C		intron_variant		5
CASR	ENST00000638421.1	c.1609-2855T>C		intron_variant		5		P1

Frequencies

GnomAD3 genomes AF: 0.922 AC: 140186 AN: 152094 Hom.: 64906 Cov.: 31

Gnomad AFR AF: 0.826

Gnomad AMI AF: 0.946

Gnomad AMR AF: 0.969

Gnomad ASJ AF: 0.984

Gnomad EAS AF: 0.981

Gnomad SAS AF: 0.956

Gnomad FIN AF: 0.917

Gnomad MID AF: 0.972

Gnomad NFE AF: 0.959

Gnomad OTH AF: 0.939

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

GnomAD4 genome AF: 0.922 AC: 140286 AN: 152212 Hom.: 64948 Cov.: 31 AF XY: 0.923 AC XY: 68670 AN XY: 74422

Gnomad4 AFR AF: 0.826

Gnomad4 AMR AF: 0.969

Gnomad4 ASJ AF: 0.984

Gnomad4 EAS AF: 0.981

Gnomad4 SAS AF: 0.956

Gnomad4 FIN AF: 0.917

Gnomad4 NFE AF: 0.959

Gnomad4 OTH AF: 0.940

Alfa AF: 0.934 Hom.: 9717

Bravo AF: 0.923

Asia WGS AF: 0.955 AC: 3320 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.97
Cadd	Benign	0.29
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: rs7652858; hg19: chr3-121998105;