chr17-42820778-C-T

Position:

• chr17-42820778-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001313998.2(BECN1):​c.194G>A​(p.Gly65Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BECN1 NM_001313998.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.71

Genes affected

BECN1 (HGNC:1034): (beclin 1) This gene encodes a protein that regulates autophagy, a catabolic process of degradation induced by starvation. The encoded protein is a component of the phosphatidylinositol-3-kinase (PI3K) complex which mediates vesicle-trafficking processes. This protein is thought to play a role in multiple cellular processes, including tumorigenesis, neurodegeneration and apoptosis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Sep 2015]

BECN1 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09557745).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BECN1	NM_001313998.2	c.194G>A	p.Gly65Glu	missense_variant	3/12	ENST00000590099.6	NP_001300927.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BECN1	ENST00000590099.6	c.194G>A	p.Gly65Glu	missense_variant	3/12	1	NM_001313998.2	ENSP00000465364.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ExAC AF: 0.00000825 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

Dec 03, 2024

The c.194G>A (p.G65E) alteration is located in exon 3 (coding exon 2) of the BECN1 gene. This alteration results from a G to A substitution at nucleotide position 194, causing the glycine (G) at amino acid position 65 to be replaced by a glutamic acid (E). 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	0.084
BayesDel_addAF	Benign	-0.17	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	19
DANN	Benign	0.77
DEOGEN2	Benign	0.15	T;T;T;.
Eigen	Benign	-0.38
Eigen_PC	Benign	-0.10
FATHMM_MKL	Uncertain	0.83	D
LIST_S2	Uncertain	0.87	.;D;D;D
M_CAP	Benign	0.0031	T
MetaRNN	Benign	0.096	T;T;T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.49	N;N;.;.
PrimateAI	Uncertain	0.60	T
PROVEAN	Benign	0.70	N;.;N;.
REVEL	Benign	0.073
Sift	Benign	0.41	T;.;T;.
Sift4G	Benign	0.43	T;T;T;.
Polyphen		0.0080	B;B;B;.
Vest4		0.32
MutPred		0.22		Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);Gain of loop (P = 0.0045);
MVP		0.16
MPC		0.59
ClinPred		0.60	D
GERP RS		5.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.099
gMVP		0.23

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: rs764475983; hg19: chr17-40972796;