NM_002518.4:c.1363C>A

Variant names:

• chr2-100975538-C-A
• rs879253743
• NM_002518.4:c.1363C>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM2 PM5 BP4_Moderate

The NM_002518.4(NPAS2):​c.1363C>A​(p.Pro455Thr) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P455A) has been classified as Likely pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NPAS2 NM_002518.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.77
• Publications: 3 publications found

Genes affected

NPAS2 (HGNC:7895): (neuronal PAS domain protein 2) The protein encoded by this gene is a member of the basic helix-loop-helix (bHLH)-PAS family of transcription factors. A similar mouse protein may play a regulatory role in the acquisition of specific types of memory. It also may function as a part of a molecular clock operative in the mammalian forebrain. [provided by RefSeq, Jul 2008]

NPAS2-AS1 (HGNC:40408): (NPAS2 antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr2-100975538-C-G is described in ClinVar as [Likely_pathogenic]. Clinvar id is 242856.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.09652382).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPAS2	NM_002518.4	c.1363C>A	p.Pro455Thr	missense_variant	Exon 14 of 21	ENST00000335681.10	NP_002509.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPAS2	ENST00000335681.10	c.1363C>A	p.Pro455Thr	missense_variant	Exon 14 of 21	1	NM_002518.4	ENSP00000338283.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00 AC: 0 AN: 248652 AF XY: 0.00

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.064
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.56
CADD	Benign	16
DANN	Benign	0.85
DEOGEN2	Benign	0.080	T;.
Eigen	Benign	-0.41
Eigen_PC	Benign	-0.31
FATHMM_MKL	Uncertain	0.76	D
LIST_S2	Benign	0.60	T;T
M_CAP	Benign	0.0084	T
MetaRNN	Benign	0.097	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.7	L;.
PhyloP100		1.8
PrimateAI	Uncertain	0.50	T
PROVEAN	Benign	-0.54	N;N
REVEL	Benign	0.030
Sift	Benign	0.57	T;T
Sift4G	Benign	0.73	T;T
Polyphen		0.088	B;.
Vest4		0.14
MVP		0.20
MPC		0.48
ClinPred		0.27	T
GERP RS		4.8
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.038
gMVP		0.27
Mutation Taster		=45/55	disease causing

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

Other links and lift over

dbSNP: rs879253743; hg19: chr2-101592000;