Genetic Variant DBN1:p.Cys573Phe (chr5-177458254-C-A) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001363541.2(DBN1):c.1718G>T(p.Cys573Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000342 in 1,461,418 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

DBN1
NM_001363541.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.32

Variant links:

Genes affected

DBN1 (HGNC:2695): (drebrin 1) The protein encoded by this gene is a cytoplasmic actin-binding protein thought to play a role in the process of neuronal growth. It is a member of the drebrin family of proteins that are developmentally regulated in the brain. A decrease in the amount of this protein in the brain has been implicated as a possible contributing factor in the pathogenesis of memory disturbance in Alzheimer's disease. At least two alternative splice variants encoding different protein isoforms have been described for this gene. [provided by RefSeq, Jul 2008]

DBN1 links:

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ACMG classification

Classification made for transcript

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=0.1580801).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
DBN1	NM_001363541.2 link	c.1718G>T	p.Cys573Phe	missense_variant	Exon 13 of 15	ENST00000393565.6	NP_001350470.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
DBN1	ENST00000393565.6 link	c.1718G>T	p.Cys573Phe	missense_variant	Exon 13 of 15	5	NM_001363541.2	ENSP00000377195.1		Q16643-3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

249078

Hom.:

AF XY:

0.00000741

AC XY:

AN XY:

135018

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000145

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000342

AC:

AN:

1461418

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726990

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000895

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.:

Bravo

AF:

0.00000756

ExAC

AF:

0.00000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 22, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1586G>T (p.C529F) alteration is located in exon 13 (coding exon 12) of the DBN1 gene. This alteration results from a G to T substitution at nucleotide position 1586, causing the cysteine (C) at amino acid position 529 to be replaced by a phenylalanine (F). 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

-0.30

BayesDel_noAF

Benign

-0.42

CADD

Benign

DANN

Benign

0.94

DEOGEN2

Benign

0.14

T;.;.;T

Eigen

Benign

-0.19

Eigen_PC

Benign

-0.079

FATHMM_MKL

Uncertain

0.84

LIST_S2

Benign

0.81

T;T;T;T

M_CAP

Benign

0.018

MetaRNN

Benign

0.16

T;T;T;T

MetaSVM

Benign

-0.99

MutationAssessor

Benign

0.90

L;.;.;.

PrimateAI

Benign

0.46

PROVEAN

Benign

-0.99

N;N;N;N

REVEL

Benign

0.048

Sift

Uncertain

0.010

D;D;D;D

Sift4G

Benign

0.70

T;T;T;D

Polyphen

0.10

B;B;.;.

Vest4

0.29

MutPred

0.26

Gain of sheet (P = 0.0266);.;.;.;

MVP

0.24

MPC

0.36

ClinPred

0.20

GERP RS

4.6

Varity_R

0.46

gMVP

0.054

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over