3-114339120-G-A

Position:

chr3-114339120-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_001348800.3(ZBTB20):c.2111C>T(p.Pro704Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,458,010 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

ZBTB20
NM_001348800.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.40

Variant links:

Genes affected

ZBTB20 (HGNC:13503): (zinc finger and BTB domain containing 20) This gene, which was initially designated as dendritic cell-derived BTB/POZ zinc finger (DPZF), belongs to a family of transcription factors with an N-terminal BTB/POZ domain and a C-terminal DNA-bindng zinc finger domain. The BTB/POZ domain is a hydrophobic region of approximately 120 aa which mediates association with other BTB/POZ domain-containing proteins. This gene acts as a transcriptional repressor and plays a role in many processes including neurogenesis, glucose homeostasis, and postnatal growth. Mutations in this gene have been associated with Primrose syndrome as well as the 3q13.31 microdeletion syndrome. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Feb 2017]

ZBTB20 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), ZBTB20. . Gene score misZ 4.272 (greater than the threshold 3.09). Trascript score misZ 3.9474 (greater than threshold 3.09). GenCC has associacion of gene with Primrose syndrome, diabetes mellitus.

BP4

Computational evidence support a benign effect (MetaRNN=0.104549974).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ZBTB20	NM_001348800.3 linkuse as main transcript	c.2111C>T	p.Pro704Leu	missense_variant	12/12	ENST00000675478.1	NP_001335729.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ZBTB20	ENST00000675478.1 linkuse as main transcript	c.2111C>T	p.Pro704Leu	missense_variant	12/12		NM_001348800.3	ENSP00000501561	A2	Q9HC78-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000403

AC:

AN:

247870

Hom.:

AF XY:

0.00000747

AC XY:

AN XY:

133898

show subpopulations

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 SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000895

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1458010

Hom.:

Cov.:

AF XY:

0.00000276

AC XY:

AN XY:

724906

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.0000252

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.01e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 26, 2022

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 704 of the ZBTB20 protein (p.Pro704Leu). This variant is present in population databases (no rsID available, gnomAD 0.0009%). This variant has not been reported in the literature in individuals affected with ZBTB20-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.53

CADD

Benign

DANN

Benign

0.97

DEOGEN2

Benign

0.13

.;.;.;.;.;T;.

Eigen

Benign

-0.47

Eigen_PC

Benign

-0.25

FATHMM_MKL

Uncertain

0.93

LIST_S2

Uncertain

0.90

.;.;D;.;.;D;.

M_CAP

Benign

0.0046

MetaRNN

Benign

0.10

T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

.;.;.;.;.;N;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D

PrimateAI

Benign

0.47

PROVEAN

Benign

-1.5

N;N;N;N;N;N;N

REVEL

Benign

0.055

Sift

Uncertain

0.026

D;D;D;D;D;D;D

Sift4G

Benign

0.11

T;T;T;T;T;T;T

Polyphen

0.0

.;.;.;.;.;B;.

Vest4

0.14

MutPred

0.41

.;.;.;.;.;Loss of disorder (P = 0.0062);.;

MVP

0.093

MPC

1.2

ClinPred

0.18

GERP RS

4.0

Varity_R

0.065

gMVP

0.14

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