1-162154450-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.151A>G(p.Ile51Val) 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: 31)
• Consequence: NOS1AP NM_014697.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.49

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]

(HGNC:):

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=0.36815053).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NOS1AP	NM_014697.3	c.151A>G	p.Ile51Val	missense_variant	2/10	ENST00000361897.10
LOC105371475	XR_007066699.1	n.486+13832T>C		intron_variant, non_coding_transcript_variant
NOS1AP	NM_001164757.2	c.151A>G	p.Ile51Val	missense_variant	2/10
LOC105371475	XR_007066697.1	n.486+13832T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NOS1AP	ENST00000361897.10	c.151A>G	p.Ile51Val	missense_variant	2/10	1	NM_014697.3
NOS1AP	ENST00000530878.5	c.151A>G	p.Ile51Val	missense_variant	2/10	1		P1
NOS1AP	ENST00000430120.3	c.151A>G	p.Ile51Val	missense_variant, NMD_transcript_variant	2/11	1
	ENST00000648032.1	n.439-6732T>C		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 31

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

Ambry Genetics

Jul 11, 2023

The c.151A>G (p.I51V) alteration is located in exon 2 (coding exon 2) of the NOS1AP gene. This alteration results from a A to G substitution at nucleotide position 151, causing the isoleucine (I) at amino acid position 51 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
Cadd	Pathogenic	26
Dann	Uncertain	1.0
Eigen	Uncertain	0.57
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Benign	0.83	T;T
M_CAP	Benign	0.0073	T
MetaRNN	Benign	0.37	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.6	L;L
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.69	T
PROVEAN	Benign	-0.76	N;N
REVEL	Benign	0.20
Sift	Benign	0.14	T;T
Sift4G	Pathogenic	0.0	D;T
Polyphen		1.0	.;D
Vest4		0.49
MutPred		0.61		Loss of catalytic residue at V52 (P = 0.0794);Loss of catalytic residue at V52 (P = 0.0794);
MVP		0.60
MPC		1.2
ClinPred		0.75	D
GERP RS		5.4
Varity_R		0.11
gMVP		0.74

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: chr1-162124240;