chr7-150993921-C-A

Variant names:

• chr7-150993921-C-A
• NM_000603.5:c.118C>A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_000603.5(NOS3):​c.118C>A​(p.Arg40Arg) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000028 in 1,428,664 control chromosomes in the GnomAD database, with no homozygous occurrence. 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: 33)
  • Exomes 𝑓: 0.0000028 (0 hom.)
• Consequence: NOS3 NM_000603.5 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.434

Genes affected

NOS3 (HGNC:7876): (nitric oxide synthase 3) Nitric oxide is a reactive free radical which acts as a biologic mediator in several processes, including neurotransmission and antimicrobial and antitumoral activities. Nitric oxide is synthesized from L-arginine by nitric oxide synthases. Variations in this gene are associated with susceptibility to coronary spasm. Alternative splicing and the use of alternative promoters results in multiple transcript variants. [provided by RefSeq, Oct 2016]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.56).
• BP7: Synonymous conserved (PhyloP=-0.434 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOS3	NM_000603.5	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 2 of 27	ENST00000297494.8	NP_000594.2
NOS3	NM_001160111.1	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 1 of 14		NP_001153583.1
NOS3	NM_001160110.1	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 1 of 14		NP_001153582.1
NOS3	NM_001160109.2	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 1 of 14		NP_001153581.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOS3	ENST00000297494.8	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 2 of 27	1	NM_000603.5	ENSP00000297494.3
NOS3	ENST00000484524.5	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 1 of 14	1		ENSP00000420215.1
NOS3	ENST00000467517.1	c.118C>A	p.Arg40Arg	synonymous_variant	Exon 1 of 14	1		ENSP00000420551.1
NOS3	ENST00000461406.5	c.-148-1282C>A		intron_variant	Intron 1 of 23	2		ENSP00000417143.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000280 AC: 4 AN: 1428664 Hom.: 0 Cov.: 31 AF XY: 0.00000282 AC XY: 2 AN XY: 708210

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000365

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.56
CADD	Benign	4.2
DANN	Benign	0.75

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		Details are displayed if max score is > 0.2

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-150691009; COSMIC: COSV99872320;