chr7-95310518-G-A

Variant names:

• chr7-95310518-G-A
• rs3917533
• NM_000446.7:c.497+933C>T

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_000446.7(PON1):​c.497+933C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.277 in 152,076 control chromosomes in the GnomAD database, including 6,181 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 0.28 (6181 hom., cov: 32)
• Consequence: PON1 NM_000446.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.0320
• Publications: 3 publications found

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]

PON1 Gene-Disease associations (from GenCC):

• amyotrophic lateral sclerosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.87).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.49 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PON1	NM_000446.7	c.497+933C>T		intron_variant	Intron 5 of 8	ENST00000222381.8	NP_000437.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PON1	ENST00000222381.8	c.497+933C>T		intron_variant	Intron 5 of 8	1	NM_000446.7	ENSP00000222381.3
PON1	ENST00000433729.1	n.*222+933C>T		intron_variant	Intron 5 of 8	3		ENSP00000407359.1

Frequencies

GnomAD3 genomes AF: 0.277 AC: 42121 AN: 151958 Hom.: 6159 Cov.: 32

Gnomad AFR AF: 0.364

Gnomad AMI AF: 0.300

Gnomad AMR AF: 0.267

Gnomad ASJ AF: 0.251

Gnomad EAS AF: 0.506

Gnomad SAS AF: 0.265

Gnomad FIN AF: 0.220

Gnomad MID AF: 0.234

Gnomad NFE AF: 0.220

Gnomad OTH AF: 0.279

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

GnomAD4 genome AF: 0.277 AC: 42179 AN: 152076 Hom.: 6181 Cov.: 32 AF XY: 0.279 AC XY: 20729 AN XY: 74348

African (AFR) AF: 0.364 AC: 15111 AN: 41468

American (AMR) AF: 0.267 AC: 4077 AN: 15278

Ashkenazi Jewish (ASJ) AF: 0.251 AC: 871 AN: 3472

East Asian (EAS) AF: 0.506 AC: 2614 AN: 5164

South Asian (SAS) AF: 0.265 AC: 1277 AN: 4814

European-Finnish (FIN) AF: 0.220 AC: 2331 AN: 10584

Middle Eastern (MID) AF: 0.228 AC: 67 AN: 294

European-Non Finnish (NFE) AF: 0.220 AC: 14955 AN: 67986

Other (OTH) AF: 0.287 AC: 604 AN: 2108

Alfa AF: 0.239 Hom.: 5660

Bravo AF: 0.286

Asia WGS AF: 0.405 AC: 1407 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	0.73
DANN	Benign	0.34
PhyloP100		0.032
Mutation Taster		=100/0	polymorphism (auto)

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: rs3917533; hg19: chr7-94939830;