rs4977757

chr9-22094331-A-G

Variant summary

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

The NR_003529.3(CDKN2B-AS1):n.2449-2041A>G variant causes a intron, non coding transcript change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.588 in 142,084 control chromosomes in the GnomAD database, including 28,004 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 0.59 (28004 hom., cov: 28)
• Consequence: CDKN2B-AS1 NR_003529.3 intron, non_coding_transcript
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.41

Genes affected

CDKN2B-AS1 (HGNC:34341): (CDKN2B antisense RNA 1) This gene is located within the CDKN2B-CDKN2A gene cluster at chromosome 9p21. The gene product is a functional RNA molecule that interacts with polycomb repressive complex-1 (PRC1) and -2 (PRC2), leading to epigenetic silencing of other genes in this cluster. This region is a significant genetic susceptibility locus for cardiovascular disease, and has also been linked to a number of other pathologies, including several cancers, intracranial aneurysm, type-2 diabetes, periodontitis, Alzheimer's disease, endometriosis, frailty in the elderly, and glaucoma. Multiple alternatively processed transcript variants have been detected, some of which may take the form of circular RNA molecules (PMID:21151960). [provided by RefSeq, May 2014]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-1.02).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.83 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDKN2B-AS1	NR_003529.3	n.2449-2041A>G		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDKN2B-AS1	ENST00000650946.1	n.439-32772A>G		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes AF: 0.588 AC: 83466 AN: 142008 Hom.: 27980 Cov.: 28

Gnomad AFR AF: 0.838

Gnomad AMI AF: 0.494

Gnomad AMR AF: 0.515

Gnomad ASJ AF: 0.647

Gnomad EAS AF: 0.647

Gnomad SAS AF: 0.601

Gnomad FIN AF: 0.430

Gnomad MID AF: 0.727

Gnomad NFE AF: 0.497

Gnomad OTH AF: 0.603

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

GnomAD4 genome AF: 0.588 AC: 83528 AN: 142084 Hom.: 28004 Cov.: 28 AF XY: 0.579 AC XY: 40195 AN XY: 69410

Gnomad4 AFR AF: 0.838

Gnomad4 AMR AF: 0.515

Gnomad4 ASJ AF: 0.647

Gnomad4 EAS AF: 0.647

Gnomad4 SAS AF: 0.599

Gnomad4 FIN AF: 0.430

Gnomad4 NFE AF: 0.497

Gnomad4 OTH AF: 0.600

Alfa AF: 0.557 Hom.: 2900

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-1.0
Cadd	Benign	0.88
Dann	Benign	0.38

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs4977757; hg19: chr9-22094330;