4-139045332-C-G

Variant names:

• chr4-139045332-C-G
• NM_012118.4:c.1154C>G

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_012118.4(NOCT):​c.1154C>G​(p.Ala385Gly) 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. 14/21 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: NOCT NM_012118.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.87

Genes affected

NOCT (HGNC:14254): (nocturnin) The protein encoded by this gene is highly similar to Nocturnin, a gene identified as a circadian clock regulated gene in Xenopus laevis. This protein and Nocturnin protein share similarity with the C-terminal domain of a yeast transcription factor, carbon catabolite repression 4 (CCR4). The mRNA abundance of a similar gene in mouse has been shown to exhibit circadian rhythmicity, which suggests a role for this protein in clock function or as a circadian clock effector. [provided by RefSeq, Jul 2008]

ELF2 (HGNC:3317): (E74 like ETS transcription factor 2) Enables DNA-binding transcription factor activity, RNA polymerase II-specific and sequence-specific double-stranded DNA binding activity. Involved in negative regulation of transcription, DNA-templated; positive regulation of transcription, DNA-templated; and regulation of transcription by RNA polymerase II. Located in cytosol and nuclear body. [provided by Alliance of Genome Resources, Apr 2022]

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=0.3120922).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NOCT	NM_012118.4	c.1154C>G	p.Ala385Gly	missense_variant	Exon 3 of 3	ENST00000280614.4	NP_036250.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NOCT	ENST00000280614.4	c.1154C>G	p.Ala385Gly	missense_variant	Exon 3 of 3	1	NM_012118.4	ENSP00000280614.2
ELF2	ENST00000515489.1	n.272+14992G>C		intron_variant	Intron 1 of 1	2
NOCT	ENST00000630479.1	n.*505-230C>G		intron_variant	Intron 2 of 2	5		ENSP00000486546.1
NOCT	ENST00000515616.1	n.*227C>G		downstream_gene_variant		1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 25, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1154C>G (p.A385G) alteration is located in exon 3 (coding exon 3) of the NOCT gene. This alteration results from a C to G substitution at nucleotide position 1154, causing the alanine (A) at amino acid position 385 to be replaced by a glycine (G). 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	0.13
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.43
CADD	Benign	20
DANN	Benign	0.68
DEOGEN2	Benign	0.18	T
Eigen	Benign	-0.42
Eigen_PC	Benign	-0.34
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.019	T
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.85	L
PrimateAI	Benign	0.46	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.093
Sift	Benign	0.45	T
Sift4G	Benign	0.35	T
Polyphen		0.022	B
Vest4		0.49
MutPred		0.54		Loss of stability (P = 0.0563);
MVP		0.11
MPC		0.32
ClinPred		0.71	D
GERP RS		4.8
Varity_R		0.36
gMVP		0.54

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: chr4-139966486;