chr7-95311726-G-A

Variant names:

• chr7-95311726-G-A
• rs1157745
• NM_000446.7:c.371-149C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_000446.7(PON1):​c.371-149C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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: not found (cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PON1 NM_000446.7 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.142
• 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: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.52).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PON1	NM_000446.7	c.371-149C>T		intron_variant	Intron 4 of 8	ENST00000222381.8	NP_000437.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PON1	ENST00000222381.8	c.371-149C>T		intron_variant	Intron 4 of 8	1	NM_000446.7	ENSP00000222381.3
PON1	ENST00000433729.1	n.*96-149C>T		intron_variant	Intron 4 of 8	3		ENSP00000407359.1
PON1	ENST00000470502.1	n.491-149C>T		intron_variant	Intron 3 of 3	4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 703614 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 367266

African (AFR) AF: 0.00 AC: 0 AN: 17314

American (AMR) AF: 0.00 AC: 0 AN: 29030

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 18090

East Asian (EAS) AF: 0.00 AC: 0 AN: 32196

South Asian (SAS) AF: 0.00 AC: 0 AN: 57180

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 34426

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 3514

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 477114

Other (OTH) AF: 0.00 AC: 0 AN: 34750

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.52
CADD	Benign	16
DANN	Benign	0.67
PhyloP100		0.14

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: rs1157745; hg19: chr7-94941038;