Genetic Variant NPAS4:p.Thr136Ala (chr11-66422529-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_178864.4(NPAS4):c.406A>G(p.Thr136Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,528 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

NPAS4
NM_178864.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.624

Variant links:

Genes affected

NPAS4 (HGNC:18983): (neuronal PAS domain protein 4) NXF is a member of the basic helix-loop-helix-PER (MIM 602260)-ARNT (MIM 126110)-SIM (see SIM2; MIM 600892) (bHLH-PAS) class of transcriptional regulators, which are involved in a wide range of physiologic and developmental events (Ooe et al., 2004 [PubMed 14701734]).[supplied by OMIM, Mar 2008]

NPAS4 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.05433464).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NPAS4	NM_178864.4 link	c.406A>G	p.Thr136Ala	missense_variant	Exon 3 of 8	ENST00000311034.7	NP_849195.2	Q8IUM7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NPAS4	ENST00000311034.7 link	c.406A>G	p.Thr136Ala	missense_variant	Exon 3 of 8	1	NM_178864.4	ENSP00000311196.2		Q8IUM7-1
NPAS4	ENST00000525148.1 link	n.406A>G		non_coding_transcript_exon_variant	Exon 3 of 7	1		ENSP00000433135.1		Q8IUM7-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461528

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

727108

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 29, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.406A>G (p.T136A) alteration is located in exon 3 (coding exon 3) of the NPAS4 gene. This alteration results from a A to G substitution at nucleotide position 406, causing the threonine (T) at amino acid position 136 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

0.057

BayesDel_addAF

Benign

-0.39

BayesDel_noAF

Benign

-0.80

CADD

Benign

8.0

DANN

Benign

0.74

DEOGEN2

Benign

0.10

.;T

Eigen

Benign

-1.1

Eigen_PC

Benign

-1.0

FATHMM_MKL

Benign

0.44

LIST_S2

Benign

0.50

T;T

M_CAP

Benign

0.0023

MetaRNN

Benign

0.054

T;T

MetaSVM

Benign

-0.98

MutationAssessor

Benign

-0.46

N;N

PrimateAI

Benign

0.42

PROVEAN

Benign

0.050

.;N

REVEL

Benign

0.014

Sift

Benign

0.52

.;T

Sift4G

Benign

0.54

.;T

Polyphen

0.0

.;B

Vest4

0.16

MutPred

0.29

Gain of helix (P = 0.062);Gain of helix (P = 0.062);

MVP

0.12

MPC

0.26

ClinPred

0.031

GERP RS

-3.6

Varity_R

0.028

gMVP

0.31

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over