chr7-95313808-T-G

Position:

• chr7-95313808-T-G

Variant summary

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

The NM_000446.7(PON1):​c.370+1514A>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0599 in 151,906 control chromosomes in the GnomAD database, including 373 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 0.060 (373 hom., cov: 31)
• Consequence: PON1 NM_000446.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.359

Genes affected

PON1 (HGNC:9204): (paraoxonase 1) This gene encodes a member of the paraoxonase family of enzymes and exhibits lactonase and ester hydrolase activity. Following synthesis in the kidney and liver, the enzyme is secreted into the circulation, where it binds to high density lipoprotein (HDL) particles and hydrolyzes thiolactones and xenobiotics, including paraoxon, a metabolite of the insecticide parathion. Polymorphisms in this gene may be associated with coronary artery disease and diabetic retinopathy. The gene is found in a cluster of three related paraoxonase genes on chromosome 7. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.12 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PON1	NM_000446.7	c.370+1514A>C		intron_variant		ENST00000222381.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PON1	ENST00000222381.8	c.370+1514A>C		intron_variant		1	NM_000446.7	P1
PON1	ENST00000433729.1	c.*95+1514A>C		intron_variant, NMD_transcript_variant		3
PON1	ENST00000470502.1	n.490+1514A>C		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes AF: 0.0598 AC: 9079 AN: 151788 Hom.: 372 Cov.: 31

Gnomad AFR AF: 0.122

Gnomad AMI AF: 0.0296

Gnomad AMR AF: 0.0367

Gnomad ASJ AF: 0.00433

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00270

Gnomad FIN AF: 0.0372

Gnomad MID AF: 0.0316

Gnomad NFE AF: 0.0427

Gnomad OTH AF: 0.0526

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

GnomAD4 genome AF: 0.0599 AC: 9098 AN: 151906 Hom.: 373 Cov.: 31 AF XY: 0.0575 AC XY: 4273 AN XY: 74264

Gnomad4 AFR AF: 0.123

Gnomad4 AMR AF: 0.0366

Gnomad4 ASJ AF: 0.00433

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00249

Gnomad4 FIN AF: 0.0372

Gnomad4 NFE AF: 0.0426

Gnomad4 OTH AF: 0.0521

Alfa AF: 0.0115 Hom.: 53

Bravo AF: 0.0632

Asia WGS AF: 0.0160 AC: 55 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	2.8
DANN	Benign	0.70

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: rs3917510; hg19: chr7-94943120; COSMIC: COSV55934171;