rs20420

Positions:

• chr1-186680936-G-A

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BS1 BS2

The NR_125801.1(PACERR):​n.283G>A variant causes a non coding transcript exon change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0141 in 152,298 control chromosomes in the GnomAD database, including 53 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 0.014 (53 hom., cov: 32)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PACERR NR_125801.1 non_coding_transcript_exon
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.215

Genes affected

PACERR (HGNC:50552): (PTGS2 antisense NFKB1 complex-mediated expression regulator RNA) This gene represents transcription of a long non-coding RNA produced in antisense to the prostaglandin-endoperoxide synthase 2 (PTGS2) gene. This transcript interacts with NF-kB transcriptional regulators to promote expression of PTGS2. [provided by RefSeq, Feb 2015]

PTGS2 (HGNC:9605): (prostaglandin-endoperoxide synthase 2) Prostaglandin-endoperoxide synthase (PTGS), also known as cyclooxygenase, is the key enzyme in prostaglandin biosynthesis, and acts both as a dioxygenase and as a peroxidase. There are two isozymes of PTGS: a constitutive PTGS1 and an inducible PTGS2, which differ in their regulation of expression and tissue distribution. This gene encodes the inducible isozyme. It is regulated by specific stimulatory events, suggesting that it is responsible for the prostanoid biosynthesis involved in inflammation and mitogenesis. [provided by RefSeq, Feb 2009]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.74).
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0141 (2152/152298) while in subpopulation AFR AF= 0.0493 (2049/41552). AF 95% confidence interval is 0.0475. There are 53 homozygotes in gnomad4. There are 1026 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 53 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PACERR	NR_125801.1	n.283G>A		non_coding_transcript_exon_variant	1/1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PACERR	ENST00000608917.3	n.336G>A		non_coding_transcript_exon_variant	1/1
PTGS2	ENST00000680451.1			upstream_gene_variant				ENSP00000506242	P1

Frequencies

GnomAD3 genomes AF: 0.0141 AC: 2140 AN: 152180 Hom.: 51 Cov.: 32

Gnomad AFR AF: 0.0492

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00471

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000414

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000176

Gnomad OTH AF: 0.00766

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 424 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 246

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0141 AC: 2152 AN: 152298 Hom.: 53 Cov.: 32 AF XY: 0.0138 AC XY: 1026 AN XY: 74460

Gnomad4 AFR AF: 0.0493

Gnomad4 AMR AF: 0.00470

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000414

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000176

Gnomad4 OTH AF: 0.00758

Alfa AF: 0.0191 Hom.: 6

Bravo AF: 0.0156

Asia WGS AF: 0.00375 AC: 13 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.74
CADD	Benign	7.5
DANN	Benign	0.88

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs20420; hg19: chr1-186650068;