chr12-47850776-G-A

Position:

• chr12-47850776-G-A

Variant summary

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

The NM_000376.3(VDR):​c.756-3968C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.533 in 151,440 control chromosomes in the GnomAD database, including 21,682 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 0.53 (21682 hom., cov: 31)
• Consequence: VDR NM_000376.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.08

Genes affected

VDR (HGNC:12679): (vitamin D receptor) This gene encodes vitamin D3 receptor, which is a member of the nuclear hormone receptor superfamily of ligand-inducible transcription factors. This receptor also functions as a receptor for the secondary bile acid, lithocholic acid. Downstream targets of vitamin D3 receptor are principally involved in mineral metabolism, though this receptor regulates a variety of other metabolic pathways, such as those involved in immune response and cancer. Mutations in this gene are associated with type II vitamin D-resistant rickets. A single nucleotide polymorphism in the initiation codon results in an alternate translation start site three codons downstream. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. A recent study provided evidence for translational readthrough in this gene, and expression of an additional C-terminally extended isoform via the use of an alternative in-frame translation termination codon. [provided by RefSeq, Jun 2018]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.566 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VDR	NM_000376.3	c.756-3968C>T		intron_variant		ENST00000549336.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VDR	ENST00000549336.6	c.756-3968C>T		intron_variant		1	NM_000376.3	P1

Frequencies

GnomAD3 genomes AF: 0.533 AC: 80604 AN: 151318 Hom.: 21654 Cov.: 31

Gnomad AFR AF: 0.572

Gnomad AMI AF: 0.589

Gnomad AMR AF: 0.493

Gnomad ASJ AF: 0.582

Gnomad EAS AF: 0.286

Gnomad SAS AF: 0.569

Gnomad FIN AF: 0.554

Gnomad MID AF: 0.532

Gnomad NFE AF: 0.527

Gnomad OTH AF: 0.538

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

GnomAD4 genome AF: 0.533 AC: 80688 AN: 151440 Hom.: 21682 Cov.: 31 AF XY: 0.533 AC XY: 39432 AN XY: 73976

Gnomad4 AFR AF: 0.572

Gnomad4 AMR AF: 0.493

Gnomad4 ASJ AF: 0.582

Gnomad4 EAS AF: 0.286

Gnomad4 SAS AF: 0.569

Gnomad4 FIN AF: 0.554

Gnomad4 NFE AF: 0.527

Gnomad4 OTH AF: 0.539

Alfa AF: 0.486 Hom.: 2977

Bravo AF: 0.527

Asia WGS AF: 0.477 AC: 1659 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.87
CADD	Benign	0.40
DANN	Benign	0.61

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: rs2239185; hg19: chr12-48244559;