rs2299261

chr7-95320351-A-G

Variant summary

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

The NM_000446.7(PON1):c.75-1958T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.345 in 152,056 control chromosomes in the GnomAD database, including 9,219 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 0.34 (9219 hom., cov: 33)
• Consequence: PON1 NM_000446.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0980

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=-0.96).
• BA1: GnomAd4 highest subpopulation (SAS) allele frequency at 95% confidence interval = 0.363 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PON1	NM_000446.7	c.75-1958T>C		intron_variant		ENST00000222381.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PON1	ENST00000222381.8	c.75-1958T>C		intron_variant		1	NM_000446.7	P1
PON1	ENST00000433729.1	c.75-1958T>C		intron_variant, NMD_transcript_variant		3

Frequencies

GnomAD3 genomes AF: 0.345 AC: 52393 AN: 151938 Hom.: 9211 Cov.: 33

Gnomad AFR AF: 0.363

Gnomad AMI AF: 0.258

Gnomad AMR AF: 0.243

Gnomad ASJ AF: 0.311

Gnomad EAS AF: 0.143

Gnomad SAS AF: 0.370

Gnomad FIN AF: 0.388

Gnomad MID AF: 0.358

Gnomad NFE AF: 0.367

Gnomad OTH AF: 0.330

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

GnomAD4 genome AF: 0.345 AC: 52416 AN: 152056 Hom.: 9219 Cov.: 33 AF XY: 0.340 AC XY: 25308 AN XY: 74334

Gnomad4 AFR AF: 0.363

Gnomad4 AMR AF: 0.243

Gnomad4 ASJ AF: 0.311

Gnomad4 EAS AF: 0.142

Gnomad4 SAS AF: 0.369

Gnomad4 FIN AF: 0.388

Gnomad4 NFE AF: 0.367

Gnomad4 OTH AF: 0.325

Alfa AF: 0.349 Hom.: 12694

Bravo AF: 0.328

Asia WGS AF: 0.221 AC: 771 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.96
Cadd	Benign	5.9
Dann	Benign	0.82

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: rs2299261; hg19: chr7-94949663;