chr1-162070217-C-A

Position:

• chr1-162070217-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_014697.3(NOS1AP):​c.40C>A​(p.His14Asn) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: NOS1AP NM_014697.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.22

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 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.25208426).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NOS1AP	NM_014697.3	c.40C>A	p.His14Asn	missense_variant	1/10	ENST00000361897.10	NP_055512.1
NOS1AP	NM_001164757.2	c.40C>A	p.His14Asn	missense_variant	1/10		NP_001158229.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NOS1AP	ENST00000361897.10	c.40C>A	p.His14Asn	missense_variant	1/10	1	NM_014697.3	ENSP00000355133.5
NOS1AP	ENST00000530878.5	c.40C>A	p.His14Asn	missense_variant	1/10	1		ENSP00000431586.1
NOS1AP	ENST00000430120.3	n.40C>A		non_coding_transcript_exon_variant	1/11	1		ENSP00000396713.3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Mar 13, 2017

Variant summary: : The NOS1AP c.40C>A (p.His14Asn) variant involves the alteration of a conserved nucleotide and is predicted to be benign by 3/4 in silico tools (SNPs&GO not captured due to low reliability index). This variant is absent in 120760 control chromosomes from ExAC. The variant of interest has not, to our knowledge, been reported in affected individuals via publications and/or reputable databases/clinical diagnostic laboratories; nor evaluated for functional impact by in vivo/vitro studies. Because of the absence of clinical information and the lack of functional studies, the variant is classified as a variant of uncertain significance (VUS) until additional information becomes available. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.27
BayesDel_addAF	Benign	-0.075	T
BayesDel_noAF	Benign	-0.35
CADD	Uncertain	26
DANN	Uncertain	0.98
DEOGEN2	Benign	0.33	.;T
Eigen	Benign	0.13
Eigen_PC	Benign	0.17
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Uncertain	0.93	D;D
M_CAP	Uncertain	0.13	D
MetaRNN	Benign	0.25	T;T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	0.76	N;N
PrimateAI	Pathogenic	0.85	D
PROVEAN	Uncertain	-2.7	D;D
REVEL	Benign	0.27
Sift	Benign	0.074	T;T
Sift4G	Benign	0.13	T;T
Polyphen		0.98	.;D
Vest4		0.32
MutPred		0.37		Gain of relative solvent accessibility (P = 0.1066);Gain of relative solvent accessibility (P = 0.1066);
MVP		0.75
MPC		1.9
ClinPred		0.84	D
GERP RS		2.9
Varity_R		0.26
gMVP		0.89

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: rs1553253970; hg19: chr1-162040007;