rs2293050

Variant names:

• chr12-117281017-C-A
• rs2293050
• NM_000620.5:c.1383-151G>T

Your query was ambiguous. Multiple possible variants found:

• chr12-117281017-C-A
• chr12-117281017-C-G
• chr12-117281017-C-T

Variant summary

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

The NM_000620.5(NOS1):​c.1383-151G>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: NOS1 NM_000620.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -3.25
• Publications: 16 publications found

Genes affected

NOS1 (HGNC:7872): (nitric oxide synthase 1) The protein encoded by this gene belongs to the family of nitric oxide synthases, which synthesize nitric oxide from L-arginine. Nitric oxide is a reactive free radical, which acts as a biologic mediator in several processes, including neurotransmission, and antimicrobial and antitumoral activities. In the brain and peripheral nervous system, nitric oxide displays many properties of a neurotransmitter, and has been implicated in neurotoxicity associated with stroke and neurodegenerative diseases, neural regulation of smooth muscle, including peristalsis, and penile erection. This protein is ubiquitously expressed, with high level of expression in skeletal muscle. Multiple transcript variants that differ in the 5' UTR have been described for this gene but the full-length nature of these transcripts is not known. Additionally, alternatively spliced transcript variants encoding different isoforms (some testis-specific) have been found for this gene.[provided by RefSeq, Feb 2011]

NOS1 Gene-Disease associations (from GenCC):

• idiopathic achalasia

  Inheritance: AR 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=-0.91).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOS1	NM_000620.5	c.1383-151G>T		intron_variant	Intron 7 of 28	ENST00000317775.11	NP_000611.1
NOS1	NM_001204218.2	c.1383-151G>T		intron_variant	Intron 7 of 29		NP_001191147.1
NOS1	NM_001204213.2	c.375-151G>T		intron_variant	Intron 6 of 27		NP_001191142.1
NOS1	NM_001204214.2	c.375-151G>T		intron_variant	Intron 6 of 27		NP_001191143.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOS1	ENST00000317775.11	c.1383-151G>T		intron_variant	Intron 7 of 28	1	NM_000620.5	ENSP00000320758.6
NOS1	ENST00000338101.8	c.1383-151G>T		intron_variant	Intron 6 of 28	5		ENSP00000337459.4
NOS1	ENST00000618760.4	c.1383-151G>T		intron_variant	Intron 7 of 29	5		ENSP00000477999.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 623062 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 319300

African (AFR) AF: 0.00 AC: 0 AN: 15780

American (AMR) AF: 0.00 AC: 0 AN: 19222

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 14774

East Asian (EAS) AF: 0.00 AC: 0 AN: 31384

South Asian (SAS) AF: 0.00 AC: 0 AN: 48550

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 34478

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 2476

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 424908

Other (OTH) AF: 0.00 AC: 0 AN: 31490

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 6352

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.91
CADD	Benign	0.042
DANN	Benign	0.78
PhyloP100		-3.2

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: rs2293050; hg19: chr12-117718822;