12-26122319-G-A

Variant names:

• chr12-26122319-G-A
• NM_030762.3:c.1196C>T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_030762.3(BHLHE41):​c.1196C>T​(p.Ala399Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: BHLHE41 NM_030762.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.69

Genes affected

BHLHE41 (HGNC:16617): (basic helix-loop-helix family member e41) 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. Defects in this gene are associated with the short sleep phenotype. [provided by RefSeq, Feb 2014]

SSPN (HGNC:11322): (sarcospan) This gene encodes a member of the dystrophin-glycoprotein complex (DGC). The DGC spans the sarcolemma and is comprised of dystrophin, syntrophin, alpha- and beta-dystroglycans and sarcoglycans. The DGC provides a structural link between the subsarcolemmal cytoskeleton and the extracellular matrix of muscle cells. Two alternatively spliced transcript variants that encode different protein isoforms have been described. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BHLHE41	NM_030762.3	c.1196C>T	p.Ala399Val	missense_variant	Exon 5 of 5	ENST00000242728.5	NP_110389.1
SSPN	XM_011520853.4	c.-31+167G>A		intron_variant	Intron 1 of 2		XP_011519155.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BHLHE41	ENST00000242728.5	c.1196C>T	p.Ala399Val	missense_variant	Exon 5 of 5	1	NM_030762.3	ENSP00000242728.4
SSPN	ENST00000538142.5	c.-31+167G>A		intron_variant	Intron 1 of 2	4		ENSP00000445360.1
SSPN	ENST00000534829.5	n.101+167G>A		intron_variant	Intron 1 of 3	3

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1013988 Hom.: 0 Cov.: 30 AF XY: 0.00 AC XY: 0 AN XY: 479270

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: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Sep 20, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1196C>T (p.A399V) alteration is located in exon 5 (coding exon 5) of the BHLHE41 gene. This alteration results from a C to T substitution at nucleotide position 1196, causing the alanine (A) at amino acid position 399 to be replaced by a valine (V). 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	0.31
BayesDel_addAF	Benign	-0.017	T
BayesDel_noAF	Benign	-0.26
CADD	Benign	15
DANN	Uncertain	0.99
DEOGEN2	Benign	0.074	T
Eigen	Uncertain	0.23
Eigen_PC	Benign	0.13
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.54	T
M_CAP	Pathogenic	0.89	D
MetaRNN	Uncertain	0.46	T
MetaSVM	Uncertain	-0.21	T
MutationAssessor	Benign	0.34	N
PrimateAI	Pathogenic	0.90	D
PROVEAN	Benign	0.36	N
REVEL	Uncertain	0.35
Sift	Benign	0.040	D
Sift4G	Benign	0.14	T
Polyphen		1.0	D
Vest4		0.29
MutPred		0.42		Gain of catalytic residue at A399 (P = 0.0018);
MVP		0.27
ClinPred		0.79	D
GERP RS		2.7
Varity_R		0.064
gMVP		0.39

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: chr12-26275252;