16-88654691-C-G

Variant names:

• chr16-88654691-C-G
• rs780212718
• NM_002461.3:c.1013+1G>C

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_002461.3(MVD):​c.1013+1G>C variant causes a splice donor, intron change. The variant allele was found at a frequency of 0.000000692 in 1,444,158 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: MVD NM_002461.3 splice_donor, intron
• Scores: Splicing: ADA: 1.000
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.53
• Publications: 1 publications found

Genes affected

MVD (HGNC:7529): (mevalonate diphosphate decarboxylase) The enzyme mevalonate pyrophosphate decarboxylase catalyzes the conversion of mevalonate pyrophosphate into isopentenyl pyrophosphate in one of the early steps in cholesterol biosynthesis. It decarboxylates and dehydrates its substrate while hydrolyzing ATP. [provided by RefSeq, Jul 2008]

MVD Gene-Disease associations (from GenCC):

• porokeratosis 7, multiple types

  Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, G2P, Labcorp Genetics (formerly Invitae)
• disseminated superficial actinic porokeratosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002461.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MVD	NM_002461.3	MANE Select	c.1013+1G>C		splice_donor intron	N/A	NP_002452.1	P53602

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MVD	ENST00000301012.8	TSL:1 MANE Select	c.1013+1G>C		splice_donor intron	N/A	ENSP00000301012.3	P53602
	MVD	ENST00000565149.5	TSL:1	n.1572+1G>C		splice_donor intron	N/A
	MVD	ENST00000899622.1		c.1133+1G>C		splice_donor intron	N/A	ENSP00000569681.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 6.92e-7 AC: 1 AN: 1444158 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 718446

African (AFR) AF: 0.00 AC: 0 AN: 32116

American (AMR) AF: 0.00 AC: 0 AN: 40608

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25552

East Asian (EAS) AF: 0.00 AC: 0 AN: 38308

South Asian (SAS) AF: 0.00 AC: 0 AN: 83270

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52590

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5704

European-Non Finnish (NFE) AF: 9.04e-7 AC: 1 AN: 1106384

Other (OTH) AF: 0.00 AC: 0 AN: 59626

GnomAD4 genome Cov.: 34

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.030
CADD	Uncertain	25
DANN	Uncertain	0.99
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.69
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		5.5
GERP RS		4.4

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Pathogenic	1.0
dbscSNV1_RF	Pathogenic	0.87
SpliceAI score (max)		0.99		Details are displayed if max score is > 0.2
DS_DL_spliceai		0.99		Position offset: 1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs780212718; hg19: chr16-88721099;