NM_020183.6:c.47A>T

Variant names:

• chr12-27368277-A-T
• rs781272646
• NM_020183.6:c.47A>T

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_020183.6(BMAL2):​c.47A>T​(p.Glu16Val) 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 1,461,872 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 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: BMAL2 NM_020183.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.32
• Publications: 0 publications found

Genes affected

BMAL2 (HGNC:18984): (basic helix-loop-helix ARNT like 2) This gene encodes a basic helix-loop-helix transcription factor belonging to the PAS (PER, ARNT, SIM) superfamily. The PAS proteins play important roles in adaptation to low atmospheric and cellular oxygen levels, exposure to certain environmental pollutants, and diurnal oscillations in light and temperature. This protein forms a transcriptionally active heterodimer with the circadian CLOCK protein, the structurally related MOP4, and hypoxia-inducible factors, such as HIF1alpha. Consistent with its role as a biologically relevant partner of circadian and hypoxia factors, this protein is coexpressed in regions of the brain such as the thalamus, hypothalamus, and amygdala. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Oct 2011]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.13407344).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020183.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BMAL2	NM_020183.6	MANE Select	c.47A>T	p.Glu16Val	missense	Exon 2 of 17	NP_064568.3
	BMAL2	NM_001394524.1		c.80A>T	p.Glu27Val	missense	Exon 2 of 17	NP_001381453.1
	BMAL2	NM_001394525.1		c.80A>T	p.Glu27Val	missense	Exon 2 of 16	NP_001381454.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BMAL2	ENST00000266503.10	TSL:1 MANE Select	c.47A>T	p.Glu16Val	missense	Exon 2 of 17	ENSP00000266503.5	Q8WYA1-1
	BMAL2	ENST00000311001.9	TSL:1	c.47A>T	p.Glu16Val	missense	Exon 2 of 16	ENSP00000312247.5	Q8WYA1-2
	BMAL2	ENST00000395901.6	TSL:1	c.80A>T	p.Glu27Val	missense	Exon 2 of 15	ENSP00000379238.2	Q8WYA1-3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251356 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: 0.0000544

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461872 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 727232

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.0000252 AC: 1 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53418

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1112002

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000824 AC: 1

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.14
BayesDel_addAF	Benign	-0.26	T
BayesDel_noAF	Benign	-0.44
CADD	Benign	19
DANN	Uncertain	0.99
DEOGEN2	Benign	0.020	T
Eigen	Benign	-0.37
Eigen_PC	Benign	-0.53
FATHMM_MKL	Benign	0.11	N
LIST_S2	Benign	0.83	T
M_CAP	Benign	0.0027	T
MetaRNN	Benign	0.13	T
MetaSVM	Benign	-0.99	T
MutationAssessor	Benign	1.6	L
PhyloP100		2.3
PrimateAI	Benign	0.39	T
PROVEAN	Benign	-1.7	N
REVEL	Benign	0.075
Sift	Uncertain	0.0020	D
Sift4G	Uncertain	0.0070	D
Polyphen		0.95	P
Vest4		0.39
MutPred		0.44		Gain of catalytic residue at E17 (P = 0.011)
MVP		0.22
MPC		0.34
ClinPred		0.45	T
GERP RS		2.3
PromoterAI		-0.012	Neutral
Varity_R		0.074
gMVP		0.62
Mutation Taster		=94/6	polymorphism

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: rs781272646; hg19: chr12-27521210;