chr7-95310946-T-C

Variant names:

• chr7-95310946-T-C
• rs3917527
• NM_000446.7:c.497+505A>G

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+505A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0883 in 152,170 control chromosomes in the GnomAD database, including 776 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 0.088 (776 hom., cov: 32)
• Consequence: PON1 NM_000446.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.336
• Publications: 8 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=-0.93).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.139 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000446.7. 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
	PON1	NM_000446.7	MANE Select	c.497+505A>G		intron	N/A	NP_000437.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PON1	ENST00000222381.8	TSL:1 MANE Select	c.497+505A>G		intron	N/A	ENSP00000222381.3	P27169
	PON1	ENST00000893040.1		c.488+505A>G		intron	N/A	ENSP00000563099.1
	PON1	ENST00000893036.1		c.497+505A>G		intron	N/A	ENSP00000563095.1

Frequencies

GnomAD3 genomes AF: 0.0883 AC: 13425 AN: 152052 Hom.: 773 Cov.: 32

Gnomad AFR AF: 0.142

Gnomad AMI AF: 0.0285

Gnomad AMR AF: 0.122

Gnomad ASJ AF: 0.0651

Gnomad EAS AF: 0.119

Gnomad SAS AF: 0.0724

Gnomad FIN AF: 0.0692

Gnomad MID AF: 0.0696

Gnomad NFE AF: 0.0521

Gnomad OTH AF: 0.0799

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

GnomAD4 genome AF: 0.0883 AC: 13444 AN: 152170 Hom.: 776 Cov.: 32 AF XY: 0.0888 AC XY: 6611 AN XY: 74416

African (AFR) AF: 0.142 AC: 5888 AN: 41490

American (AMR) AF: 0.123 AC: 1879 AN: 15286

Ashkenazi Jewish (ASJ) AF: 0.0651 AC: 226 AN: 3472

East Asian (EAS) AF: 0.119 AC: 616 AN: 5170

South Asian (SAS) AF: 0.0714 AC: 344 AN: 4818

European-Finnish (FIN) AF: 0.0692 AC: 733 AN: 10600

Middle Eastern (MID) AF: 0.0714 AC: 21 AN: 294

European-Non Finnish (NFE) AF: 0.0521 AC: 3544 AN: 68016

Other (OTH) AF: 0.0791 AC: 167 AN: 2112

Alfa AF: 0.0773 Hom.: 158

Bravo AF: 0.0971

Asia WGS AF: 0.0900 AC: 314 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	2.7
DANN	Benign	0.51
PhyloP100		-0.34
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

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

dbSNP: rs3917527;

hg19: chr7-94940258;

COSMIC: COSV107293626;

COSMIC: COSV107293626;