rs3837437

chr12-117307354-CT-Cchr12-117307354-CT-CTT

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BA1

The NM_000620.5(NOS1):c.852+4111del variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00641 in 151,840 control chromosomes in the GnomAD database, including 71 homozygotes. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.0064 (71 hom., cov: 32)
• Consequence: NOS1 NM_000620.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.531

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]

ACMG classification

Verdict is Benign. Variant got -8 ACMG points.

• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.161 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NOS1	NM_000620.5	c.852+4111del		intron_variant		ENST00000317775.11
NOS1	NM_001204214.2	c.-213+1962del		intron_variant
NOS1	NM_001204218.2	c.852+4111del		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOS1	ENST00000317775.11	c.852+4111del		intron_variant		1	NM_000620.5	P1
NOS1	ENST00000338101.8	c.852+4111del		intron_variant		5
NOS1	ENST00000618760.4	c.852+4111del		intron_variant		5

Frequencies

GnomAD3 genomes AF: 0.00644 AC: 977 AN: 151722 Hom.: 71 Cov.: 32

Gnomad AFR AF: 0.000774

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00158

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.170

Gnomad SAS AF: 0.00457

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00529

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

GnomAD4 genome AF: 0.00641 AC: 974 AN: 151840 Hom.: 71 Cov.: 32 AF XY: 0.00740 AC XY: 549 AN XY: 74220

Gnomad4 AFR AF: 0.000772

Gnomad4 AMR AF: 0.00158

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.170

Gnomad4 SAS AF: 0.00457

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.00524

Bravo AF: 0.00781

Asia WGS AF: 0.0540 AC: 188 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

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: rs3837437; hg19: chr12-117745159;