chr3-4979750-C-T

Position:

• chr3-4979750-C-T

Variant summary

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

The ENST00000256495.4(BHLHE40):​c.32C>T​(p.Pro11Leu) variant causes a missense change. The variant allele was found at a frequency of 0.0000014 in 1,427,012 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. P11R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: BHLHE40 ENST00000256495.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.51

Genes affected

BHLHE40 (HGNC:1046): (basic helix-loop-helix family member e40) This gene encodes a basic helix-loop-helix protein expressed in various tissues. The encoded protein can interact with ARNTL or compete for E-box binding sites in the promoter of PER1 and repress CLOCK/ARNTL's transactivation of PER1. This gene is believed to be involved in the control of circadian rhythm and cell differentiation. [provided by RefSeq, Feb 2014]

BHLHE40-AS1 (HGNC:44471): (BHLHE40 antisense RNA 1)

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=0.41130102).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BHLHE40	NM_003670.3	c.32C>T	p.Pro11Leu	missense_variant	1/5	ENST00000256495.4	NP_003661.1
BHLHE40-AS1	NR_125916.1	n.167+45G>A		intron_variant, non_coding_transcript_variant
BHLHE40-AS1	NR_037903.3	n.167+45G>A		intron_variant, non_coding_transcript_variant
BHLHE40-AS1	NR_125915.1	n.167+45G>A		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BHLHE40	ENST00000256495.4	c.32C>T	p.Pro11Leu	missense_variant	1/5	1	NM_003670.3	ENSP00000256495	P1
BHLHE40-AS1	ENST00000668962.1	n.620+45G>A		intron_variant, non_coding_transcript_variant

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.00000140 AC: 2 AN: 1427012 Hom.: 0 Cov.: 32 AF XY: 0.00000283 AC XY: 2 AN XY: 706780

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: 0.0000244

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ExAC AF: 0.00000833 AC: 1

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 09, 2024

The c.32C>T (p.P11L) alteration is located in exon 1 (coding exon 1) of the BHLHE40 gene. This alteration results from a C to T substitution at nucleotide position 32, causing the proline (P) at amino acid position 11 to be replaced by a leucine (L). 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	0.18
BayesDel_addAF	Benign	0.0093	T
BayesDel_noAF	Benign	-0.22
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Benign	0.39	T
Eigen	Uncertain	0.63
Eigen_PC	Uncertain	0.62
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.81	T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.41	T
MetaSVM	Benign	-0.33	T
MutationAssessor	Benign	1.8	L
MutationTaster	Benign	1.0	D
PrimateAI	Uncertain	0.78	T
PROVEAN	Benign	-1.8	N
REVEL	Benign	0.16
Sift	Benign	0.088	T
Sift4G	Benign	0.17	T
Polyphen		1.0	D
Vest4		0.38
MutPred		0.28		Loss of glycosylation at P10 (P = 0.0039);
MVP		0.62
MPC		2.5
ClinPred		0.87	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		2.6
Varity_R		0.095
gMVP		0.73

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

LitVar

Other links and lift over

dbSNP: rs761756861; hg19: chr3-5021435;