2-159320345-C-T

Position:

• chr2-159320345-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_013450.4(BAZ2B):​c.6427G>A​(p.Asp2143Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/21 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)
• Consequence: BAZ2B NM_013450.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.94

Genes affected

BAZ2B (HGNC:963): (bromodomain adjacent to zinc finger domain 2B) This gene belongs to the bromodomain gene family. Members of this gene family encode proteins that are integral components of chromatin remodeling complexes. The encoded protein showed strong preference for the activating H3K14Ac mark in a histone peptide screen, suggesting a potential role in transcriptional activation. This gene may be associated with susceptibility to sudden cardiac death (SCD). [provided by RefSeq, Aug 2016]

ACMG classification

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=0.17338735).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BAZ2B	NM_013450.4	c.6427G>A	p.Asp2143Asn	missense_variant	37/37	ENST00000392783.7	NP_038478.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BAZ2B	ENST00000392783.7	c.6427G>A	p.Asp2143Asn	missense_variant	37/37	5	NM_013450.4	ENSP00000376534.2
BAZ2B	ENST00000392782.5	c.6319G>A	p.Asp2107Asn	missense_variant	36/36	1		ENSP00000376533.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 33

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jan 09, 2024

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 38000389) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Benign	-0.24	T
BayesDel_noAF	Benign	-0.58
CADD	Uncertain	25
DANN	Benign	0.97
DEOGEN2	Benign	0.14	.;T
Eigen	Benign	0.11
Eigen_PC	Uncertain	0.27
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Benign	0.0039	T
MetaRNN	Benign	0.17	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.3	.;L
PrimateAI	Uncertain	0.76	T
PROVEAN	Uncertain	-2.5	N;N
REVEL	Benign	0.085
Sift	Benign	0.15	T;T
Sift4G	Benign	0.45	T;T
Polyphen		0.0090	B;B
Vest4		0.36
MutPred		0.42		.;Loss of glycosylation at S2144 (P = 0.111);
MVP		0.18
MPC		0.049
ClinPred		0.55	D
GERP RS		5.6
Varity_R		0.36
gMVP		0.36

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: rs2062561559; hg19: chr2-160176856; COSMIC: COSV58597986; COSMIC: COSV58597986;