12-117307354-CT-CTT

Position:

• chr12-117307354-CT-CTT

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_000620.5(NOS1):​c.852+4111dupA variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000342 in 151,840 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.00034 (0 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 Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAd4 at 52 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NOS1	NM_000620.5	c.852+4111dupA		intron_variant		ENST00000317775.11	NP_000611.1
NOS1	NM_001204218.2	c.852+4111dupA		intron_variant			NP_001191147.1
NOS1	NM_001204214.2	c.-213+1962dupA		intron_variant			NP_001191143.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NOS1	ENST00000317775.11	c.852+4111dupA		intron_variant		1	NM_000620.5	ENSP00000320758.6
NOS1	ENST00000338101.8	c.852+4111dupA		intron_variant		5		ENSP00000337459.4
NOS1	ENST00000618760.4	c.852+4111dupA		intron_variant		5		ENSP00000477999.1

Frequencies

GnomAD3 genomes AF: 0.000343 AC: 52 AN: 151722 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00114

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000589

Gnomad OTH AF: 0.000481

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

GnomAD4 genome AF: 0.000342 AC: 52 AN: 151840 Hom.: 0 Cov.: 32 AF XY: 0.000216 AC XY: 16 AN XY: 74220

Gnomad4 AFR AF: 0.00113

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000589

Gnomad4 OTH AF: 0.000476

Bravo AF: 0.000332

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;