chr14-33774373-T-G

Position:

• chr14-33774373-T-G

Variant summary

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

The NM_001164749.2(NPAS3):​c.889T>G​(p.Ser297Ala) 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. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPAS3 NM_001164749.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.31

Genes affected

NPAS3 (HGNC:19311): (neuronal PAS domain protein 3) This gene encodes a member of the basic helix-loop-helix and PAS domain-containing family of transcription factors. The encoded protein is localized to the nucleus and may regulate genes involved in neurogenesis. Chromosomal abnormalities that affect the coding potential of this gene are associated with schizophrenia and cognitive disability. Alternate splicing results in multiple transcript variants. [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=0.12923542).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NPAS3	NM_001164749.2	c.889T>G	p.Ser297Ala	missense_variant	8/12	ENST00000356141.9	NP_001158221.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NPAS3	ENST00000356141.9	c.889T>G	p.Ser297Ala	missense_variant	8/12	1	NM_001164749.2	ENSP00000348460	A2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

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

Ambry Genetics

Dec 21, 2023

The c.889T>G (p.S297A) alteration is located in exon 8 (coding exon 8) of the NPAS3 gene. This alteration results from a T to G substitution at nucleotide position 889, causing the serine (S) at amino acid position 297 to be replaced by an alanine (A). 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	Benign	0.089
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	21
DANN	Benign	0.94
DEOGEN2	Benign	0.014	T;.;.;.;T;.
Eigen	Benign	-0.13
Eigen_PC	Benign	0.12
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Benign	0.75	T;T;T;T;T;T
M_CAP	Benign	0.0036	T
MetaRNN	Benign	0.13	T;T;T;T;T;T
MetaSVM	Benign	-0.92	T
MutationAssessor	Benign	0.13	.;.;.;.;N;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.68	T
PROVEAN	Benign	-0.52	N;N;N;N;N;N
REVEL	Benign	0.053
Sift	Benign	0.32	T;T;T;T;T;T
Sift4G	Benign	0.49	T;T;T;T;T;T
Polyphen		0.0080, 0.014, 0.0040, 0.013	.;.;B;B;B;B
Vest4		0.27, 0.29, 0.30, 0.28
MutPred		0.36		.;.;.;.;Loss of disorder (P = 0.0542);.;
MVP		0.093
MPC		1.3
ClinPred		0.59	D
GERP RS		5.8
Varity_R		0.18
gMVP		0.56

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-34243579;