chr12-47844438-G-C

Variant names:

• chr12-47844438-G-C
• rs739837
• NM_000376.3:c.*308C>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000376.3(VDR):​c.*308C>G variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000129 in 388,544 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: not found (cov: 33)
  • Exomes 𝑓: 0.000013 (0 hom.)
• Consequence: VDR NM_000376.3 3_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.58
• Publications: 119 publications found

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]

VDR Gene-Disease associations (from GenCC):

• vitamin D-dependent rickets, type 2A

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• vitamin D-dependent rickets, type 2

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000376.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VDR	NM_000376.3	MANE Select	c.*308C>G		3_prime_UTR	Exon 10 of 10	NP_000367.1
	VDR	NM_001364085.2		c.*107C>G		3_prime_UTR	Exon 10 of 10	NP_001351014.1
	VDR	NM_001017536.2		c.*308C>G		3_prime_UTR	Exon 10 of 10	NP_001017536.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	VDR	ENST00000549336.6	TSL:1 MANE Select	c.*308C>G		3_prime_UTR	Exon 10 of 10	ENSP00000449573.2
	VDR	ENST00000550325.5	TSL:1	c.*308C>G		3_prime_UTR	Exon 10 of 10	ENSP00000447173.1
	VDR	ENST00000229022.9	TSL:5	c.*107C>G		3_prime_UTR	Exon 8 of 8	ENSP00000229022.5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.0000129 AC: 5 AN: 388544 Hom.: 0 Cov.: 2 AF XY: 0.0000196 AC XY: 4 AN XY: 203662

African (AFR) AF: 0.00 AC: 0 AN: 11232

American (AMR) AF: 0.00 AC: 0 AN: 16220

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 11964

East Asian (EAS) AF: 0.00 AC: 0 AN: 27040

South Asian (SAS) AF: 0.00 AC: 0 AN: 41356

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 25616

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1696

European-Non Finnish (NFE) AF: 0.0000217 AC: 5 AN: 230866

Other (OTH) AF: 0.00 AC: 0 AN: 22554

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 3694

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.062
DANN	Benign	0.24
PhyloP100		-1.6

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: rs739837; hg19: chr12-48238221;