rs767078735

Variant names:

• chr12-117220097-C-G
• rs767078735
• NM_000620.5:c.4148G>C

Your query was ambiguous. Multiple possible variants found:

• chr12-117220097-C-G
• chr12-117220097-C-T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_000620.5(NOS1):​c.4148G>C​(p.Gly1383Ala) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,459,076 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G1383C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: NOS1 NM_000620.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 6.14
• Publications: 1 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: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.758

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOS1	NM_000620.5	c.4148G>C	p.Gly1383Ala	missense_variant	Exon 27 of 29	ENST00000317775.11	NP_000611.1
NOS1	NM_001204218.2	c.4250G>C	p.Gly1417Ala	missense_variant	Exon 28 of 30		NP_001191147.1
NOS1	NM_001204213.2	c.3140G>C	p.Gly1047Ala	missense_variant	Exon 26 of 28		NP_001191142.1
NOS1	NM_001204214.2	c.3140G>C	p.Gly1047Ala	missense_variant	Exon 26 of 28		NP_001191143.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOS1	ENST00000317775.11	c.4148G>C	p.Gly1383Ala	missense_variant	Exon 27 of 29	1	NM_000620.5	ENSP00000320758.6
NOS1	ENST00000338101.8	c.4250G>C	p.Gly1417Ala	missense_variant	Exon 27 of 29	5		ENSP00000337459.4
NOS1	ENST00000618760.4	c.4250G>C	p.Gly1417Ala	missense_variant	Exon 28 of 30	5		ENSP00000477999.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000407 AC: 1 AN: 245948 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000897

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1459076 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 725780

African (AFR) AF: 0.00 AC: 0 AN: 33420

American (AMR) AF: 0.00 AC: 0 AN: 44414

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25878

East Asian (EAS) AF: 0.00 AC: 0 AN: 39646

South Asian (SAS) AF: 0.00 AC: 0 AN: 85736

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53266

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 9.00e-7 AC: 1 AN: 1110676

Other (OTH) AF: 0.00 AC: 0 AN: 60288

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000825 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.094
BayesDel_addAF	Uncertain	0.054	T
BayesDel_noAF	Benign	-0.16
CADD	Benign	22
DANN	Benign	0.92
DEOGEN2	Uncertain	0.45	T;.;.;T
Eigen	Uncertain	0.33
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D;D;.;D
M_CAP	Benign	0.083	D
MetaRNN	Pathogenic	0.76	D;D;D;D
MetaSVM	Uncertain	-0.085	T
MutationAssessor	Uncertain	2.1	M;.;.;.
PhyloP100		6.1
PrimateAI	Uncertain	0.61	T
PROVEAN	Uncertain	-2.5	N;.;N;.
REVEL	Uncertain	0.41
Sift	Benign	0.46	T;.;T;.
Sift4G	Benign	0.57	T;T;T;T
Polyphen		0.95	P;.;.;.
Vest4		0.66
MutPred		0.44		Gain of catalytic residue at R1388 (P = 0.0227);.;.;.;
MVP		0.74
MPC		1.0
ClinPred		0.41	T
GERP RS		4.4
Varity_R		0.28
gMVP		0.59
Mutation Taster		=54/46	polymorphism

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: rs767078735; hg19: chr12-117657902;