Variant 1-169380608-A-G details in Genebe, Genetics Data Aggregator

Variant summary

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

The NM_001320973.2(BLZF1):c.796A>G(p.Lys266Glu) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000000685 in 1,460,272 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

BLZF1
NM_001320973.2 missense, splice_region

Scores

Splicing: ADA: 0.9999

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.42

Variant links:

Genes affected

BLZF1 (HGNC:1065): (basic leucine zipper nuclear factor 1) Enables ubiquitin protein ligase binding activity. Acts upstream of or within Golgi organization and Golgi to plasma membrane protein transport. Located in Golgi apparatus and nucleoplasm. Biomarker of hepatocellular carcinoma. [provided by Alliance of Genome Resources, Apr 2022]

BLZF1 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BLZF1	NM_001320973.2 linkuse as main transcript	c.796A>G	p.Lys266Glu	missense_variant, splice_region_variant	5/7	ENST00000367808.8
BLZF1	NM_003666.4 linkuse as main transcript	c.796A>G	p.Lys266Glu	missense_variant, splice_region_variant	5/8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BLZF1	ENST00000367808.8 linkuse as main transcript	c.796A>G	p.Lys266Glu	missense_variant, splice_region_variant	5/7	1	NM_001320973.2	P1	Q9H2G9-1
BLZF1	ENST00000329281.6 linkuse as main transcript	c.796A>G	p.Lys266Glu	missense_variant, splice_region_variant	5/8	1		P1	Q9H2G9-1
BLZF1	ENST00000426663.1 linkuse as main transcript			downstream_gene_variant		3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.85e-7

AC:

AN:

1460272

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726442

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

9.00e-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 specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 05, 2023

The c.796A>G (p.K266E) alteration is located in exon 5 (coding exon 4) of the BLZF1 gene. This alteration results from a A to G substitution at nucleotide position 796, causing the lysine (K) at amino acid position 266 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

0.14

BayesDel_addAF

Benign

-0.070

BayesDel_noAF

Benign

-0.34

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Benign

0.036

T;T

Eigen

Uncertain

0.35

Eigen_PC

Uncertain

0.41

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

D;.

M_CAP

Benign

0.011

MetaRNN

Uncertain

0.47

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Uncertain

2.3

M;M

MutationTaster

Benign

1.0

D;D

PrimateAI

Benign

0.42

PROVEAN

Benign

-2.1

N;N

REVEL

Benign

0.11

Sift

Uncertain

0.0080

D;D

Sift4G

Uncertain

0.032

D;D

Polyphen

0.77

P;P

Vest4

0.57

MutPred

0.29

Loss of ubiquitination at K266 (P = 0.0218);Loss of ubiquitination at K266 (P = 0.0218);

MVP

0.36

MPC

0.23

ClinPred

0.86

GERP RS

5.5

Varity_R

0.32

gMVP

0.23

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.98

SpliceAI score (max)

0.18

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over