6-109465867-C-T

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2BP4_StrongBS1_Supporting

The NM_014797.3(ZBTB24):c.2078G>A(p.Gly693Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000241 in 1,614,198 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 (★★). Synonymous variant affecting the same amino acid position (i.e. G693G) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00016 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00025 ( 0 hom. )

Consequence

ZBTB24
NM_014797.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:2

Conservation

PhyloP100: 0.407

Variant links:

Genes affected

ZBTB24 (HGNC:21143): (zinc finger and BTB domain containing 24) Predicted to enable DNA-binding transcription factor activity and RNA polymerase II cis-regulatory region sequence-specific DNA binding activity. Predicted to be involved in regulation of transcription by RNA polymerase II. Predicted to act upstream of or within hematopoietic progenitor cell differentiation. Predicted to be located in nucleus. Implicated in immunodeficiency-centromeric instability-facial anomalies syndrome 2. [provided by Alliance of Genome Resources, Apr 2022]

ZBTB24 links:

MICAL1 (HGNC:20619): (microtubule associated monooxygenase, calponin and LIM domain containing 1) This gene encodes an enzyme that oxidizes methionine residues on actin, thereby promoting depolymerization of actin filaments. This protein interacts with and regulates signalling by NEDD9/CAS-L (neural precursor cell expressed, developmentally down-regulated 9). Alternative splicing results in multiple transcript variants. [provided by RefSeq, Aug 2015]

MICAL1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.025325209).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000158 (24/152320) while in subpopulation NFE AF= 0.00025 (17/68028). AF 95% confidence interval is 0.000159. There are 0 homozygotes in gnomad4. There are 7 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ZBTB24	NM_014797.3 linkuse as main transcript	c.2078G>A	p.Gly693Asp	missense_variant	7/7	ENST00000230122.4
MICAL1	NM_001286613.2 linkuse as main transcript	c.-190G>A		5_prime_UTR_variant	1/25

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ZBTB24	ENST00000230122.4 linkuse as main transcript	c.2078G>A	p.Gly693Asp	missense_variant	7/7	1	NM_014797.3	P1	O43167-1

Frequencies

GnomAD3 genomes

AF:

0.000158

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000145

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000250

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000135

AC:

AN:

251482

Hom.:

AF XY:

0.0000883

AC XY:

AN XY:

135920

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000867

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000264

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000250

AC:

365

AN:

1461878

Hom.:

Cov.:

AF XY:

0.000248

AC XY:

180

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.0000896

Gnomad4 AMR exome

AF:

0.0000894

Gnomad4 ASJ exome

AF:

0.0000383

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000309

Gnomad4 OTH exome

AF:

0.000215

GnomAD4 genome

AF:

0.000158

AC:

AN:

152320

Hom.:

Cov.:

AF XY:

0.0000940

AC XY:

AN XY:

74484

show subpopulations

Gnomad4 AFR

AF:

0.000144

Gnomad4 AMR

AF:

0.0000653

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000250

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000164

Hom.:

Bravo

AF:

0.000117

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000173

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.000178

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:2

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Immunodeficiency-centromeric instability-facial anomalies syndrome 2

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Aug 19, 2022

This sequence change replaces glycine, which is neutral and non-polar, with aspartic acid, which is acidic and polar, at codon 693 of the ZBTB24 protein (p.Gly693Asp). This variant is present in population databases (rs146770659, gnomAD 0.03%). This variant has not been reported in the literature in individuals affected with ZBTB24-related conditions. ClinVar contains an entry for this variant (Variation ID: 839315). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Not Available"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Not Available"). 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. -

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 20, 2023

The c.2078G>A (p.G693D) alteration is located in exon 7 (coding exon 6) of the ZBTB24 gene. This alteration results from a G to A substitution at nucleotide position 2078, causing the glycine (G) at amino acid position 693 to be replaced by an aspartic acid (D). 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

0.13

BayesDel_addAF

Benign

-0.51

BayesDel_noAF

Benign

-0.67

Cadd

Benign

Dann

Benign

0.97

DEOGEN2

Benign

0.0059

Eigen

Benign

-0.56

Eigen_PC

Benign

-0.43

FATHMM_MKL

Benign

0.57

LIST_S2

Benign

0.54

M_CAP

Benign

0.0091

MetaRNN

Benign

0.025

MetaSVM

Benign

-0.92

MutationAssessor

Benign

0.0

MutationTaster

Benign

0.95

D;N

PrimateAI

Benign

0.38

PROVEAN

Benign

-0.14

REVEL

Benign

0.16

Sift

Benign

0.054

Sift4G

Uncertain

0.028

Polyphen

0.0

Vest4

0.067

MVP

0.18

MPC

0.73

ClinPred

0.043

GERP RS

1.4

Varity_R

0.041

gMVP

0.074

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