chr6-109465851-T-C

Variant names:

• chr6-109465851-T-C
• rs1554227574
• NM_014797.3:c.2094A>G

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PM4

The NM_014797.3(ZBTB24):​c.2094A>G​(p.Ter698Trpext*?) variant causes a stop lost 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: 32)
• Consequence: ZBTB24 NM_014797.3 stop_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.18

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]

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in NM_014797.3 Downstream stopcodon found after 44 codons.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZBTB24	NM_014797.3	c.2094A>G	p.Ter698Trpext*?	stop_lost	Exon 7 of 7	ENST00000230122.4	NP_055612.2
MICAL1	NM_001286613.2	c.-174A>G		5_prime_UTR_variant	Exon 1 of 25		NP_001273542.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZBTB24	ENST00000230122.4	c.2094A>G	p.Ter698Trpext*?	stop_lost	Exon 7 of 7	1	NM_014797.3	ENSP00000230122.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Immunodeficiency-centromeric instability-facial anomalies syndrome 2 Uncertain:1

Dec 26, 2017

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Experimental studies and prediction algorithms are not available for this variant, and the functional significance of the additional amino acids is currently unknown. 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. This variant has not been reported in the literature in individuals with ZBTB24-related disease. This variant is not present in population databases (ExAC no frequency). This sequence change disrupts the translational stop signal of the ZBTB24 mRNA. It is expected to extend the length of the ZBTB24 protein by 14 additional amino acid residues. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.10	D
BayesDel_noAF	Benign	-0.090
CADD	Benign	18
DANN	Benign	0.89
Eigen	Pathogenic	0.99
Eigen_PC	Pathogenic	0.82
FATHMM_MKL	Uncertain	0.95	D
Vest4		0.0070
GERP RS		4.2

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: rs1554227574; hg19: chr6-109787054;