ENST00000401424.6:c.-121C>G

Variant names:

• chr11-13354388-C-G
• rs1194212761
• ENST00000401424.6:c.-121C>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The ENST00000401424.6(BMAL1):​c.-121C>G variant causes a 5 prime UTR premature start codon gain change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,864 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: BMAL1 ENST00000401424.6 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.25
• Publications: 2 publications found

Genes affected

BMAL1 (HGNC:701): (basic helix-loop-helix ARNT like 1) The protein encoded by this gene is a basic helix-loop-helix protein that forms a heterodimer with CLOCK. This heterodimer binds E-box enhancer elements upstream of Period (PER1, PER2, PER3) and Cryptochrome (CRY1, CRY2) genes and activates transcription of these genes. PER and CRY proteins heterodimerize and repress their own transcription by interacting in a feedback loop with CLOCK/ARNTL complexes. Defects in this gene have been linked to infertility, problems with gluconeogenesis and lipogenesis, and altered sleep patterns. The protein regulates interferon-stimulated gene expression and is an important factor in viral infection, including COVID-19. [provided by RefSeq, Oct 2021]

LOC124902636 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.30732167).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000401424.6. 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
	BMAL1	NM_001297719.2	MANE Select	c.80C>G	p.Ser27Cys	missense	Exon 5 of 20	NP_001284648.1	O00327-2
	BMAL1	NM_001351809.2		c.-96C>G		5_prime_UTR_premature_start_codon_gain	Exon 4 of 20	NP_001338738.1
	BMAL1	NM_001351812.2		c.-96C>G		5_prime_UTR_premature_start_codon_gain	Exon 5 of 21	NP_001338741.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BMAL1	ENST00000401424.6	TSL:1	c.-121C>G		5_prime_UTR_premature_start_codon_gain	Exon 4 of 20	ENSP00000385915.2	O00327-9
	BMAL1	ENST00000403290.6	TSL:1 MANE Select	c.80C>G	p.Ser27Cys	missense	Exon 5 of 20	ENSP00000384517.1	O00327-2
	BMAL1	ENST00000389707.8	TSL:1	c.80C>G	p.Ser27Cys	missense	Exon 5 of 20	ENSP00000374357.4	O00327-8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251340 AF XY: 0.00000736

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: 0.0000462

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461864 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727240

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

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

American (AMR) AF: 0.00 AC: 0 AN: 44724

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

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

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

European-Finnish (FIN) AF: 0.0000187 AC: 1 AN: 53418

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111994

Other (OTH) AF: 0.00 AC: 0 AN: 60392

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.079
BayesDel_addAF	Benign	-0.052	T
BayesDel_noAF	Benign	-0.31
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.096	T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Uncertain	0.97	D
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.31	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	1.8	L
PhyloP100		7.3
PrimateAI	Benign	0.42	T
PROVEAN	Uncertain	-4.3	D
REVEL	Benign	0.12
Sift	Uncertain	0.0050	D
Sift4G	Uncertain	0.028	D
Polyphen		0.95	P
Vest4		0.33
MutPred		0.25		Gain of loop (P = 0.0097)
MVP		0.46
MPC		1.7
ClinPred		0.94	D
GERP RS		5.7
Varity_R		0.26
gMVP		0.83
Mutation Taster		=220/80	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: rs1194212761; hg19: chr11-13375935;