1-162287434-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_014697.3(NOS1AP):c.268A>G(p.Lys90Glu) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NOS1AP NM_014697.3 missense, splice_region
• Scores: Splicing: ADA: 0.1970
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.24

Genes affected

NOS1AP (HGNC:16859): (nitric oxide synthase 1 adaptor protein) This gene encodes a cytosolic protein that binds to the signaling molecule, neuronal nitric oxide synthase (nNOS). This protein has a C-terminal PDZ-binding domain that mediates interactions with nNOS and an N-terminal phosphotyrosine binding (PTB) domain that binds to the small monomeric G protein, Dexras1. Studies of the related mouse and rat proteins have shown that this protein functions as an adapter protein linking nNOS to specific targets, such as Dexras1 and the synapsins. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.35862136).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NOS1AP	NM_014697.3	c.268A>G	p.Lys90Glu	missense_variant, splice_region_variant	3/10	ENST00000361897.10
NOS1AP	NM_001164757.2	c.268A>G	p.Lys90Glu	missense_variant, splice_region_variant	3/10

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOS1AP	ENST00000361897.10	c.268A>G	p.Lys90Glu	missense_variant, splice_region_variant	3/10	1	NM_014697.3
NOS1AP	ENST00000530878.5	c.268A>G	p.Lys90Glu	missense_variant, splice_region_variant	3/10	1		P1
NOS1AP	ENST00000430120.3	c.268A>G	p.Lys90Glu	missense_variant, splice_region_variant, NMD_transcript_variant	3/11	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 27

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Molecular Diagnostic Laboratory for Inherited Cardiovascular Disease, Montreal Heart Institute

Sep 15, 2016

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.83
BayesDel_addAF	Benign	-0.044	T
BayesDel_noAF	Benign	-0.30
Cadd	Pathogenic	28
Dann	Uncertain	1.0
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;T
M_CAP	Benign	0.022	T
MetaRNN	Benign	0.32	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Uncertain	2.2	M;M
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-2.5	D;D
REVEL	Benign	0.19
Sift	Benign	0.035	D;T
Sift4G	Uncertain	0.0050	D;D
Polyphen		0.92	.;P
Vest4		0.46
MutPred		0.45		Loss of MoRF binding (P = 0.0109);Loss of MoRF binding (P = 0.0109);
MVP		0.49
MPC		2.6
ClinPred		0.98	D
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.8
Varity_R		0.52
gMVP		0.83

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.20
dbscSNV1_RF	Benign	0.42
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: rs1215631561; hg19: chr1-162257224;