3-20079857-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_003884.5(KAT2B):c.430+7398C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.082 in 152,120 control chromosomes in the GnomAD database, including 658 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.082 (658 hom., cov: 32)
• Consequence: KAT2B NM_003884.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -2.10

Genes affected

KAT2B (HGNC:8638): (lysine acetyltransferase 2B) CBP and p300 are large nuclear proteins that bind to many sequence-specific factors involved in cell growth and/or differentiation, including c-jun and the adenoviral oncoprotein E1A. The protein encoded by this gene associates with p300/CBP. It has in vitro and in vivo binding activity with CBP and p300, and competes with E1A for binding sites in p300/CBP. It has histone acetyl transferase activity with core histones and nucleosome core particles, indicating that this protein plays a direct role in transcriptional regulation. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (AMR) allele frequency at 95% confidence interval = 0.134 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KAT2B	NM_003884.5	c.430+7398C>T		intron_variant		ENST00000263754.5
KAT2B	XM_005265528.5	c.430+7398C>T		intron_variant
KAT2B	XM_047449147.1	c.139+7398C>T		intron_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KAT2B	ENST00000263754.5	c.430+7398C>T		intron_variant		1	NM_003884.5	P1
KAT2B	ENST00000426228.1	n.210+7398C>T		intron_variant, non_coding_transcript_variant		4

Frequencies

GnomAD3 genomes AF: 0.0821 AC: 12480 AN: 152002 Hom.: 660 Cov.: 32

Gnomad AFR AF: 0.0226

Gnomad AMI AF: 0.0713

Gnomad AMR AF: 0.139

Gnomad ASJ AF: 0.108

Gnomad EAS AF: 0.00617

Gnomad SAS AF: 0.0550

Gnomad FIN AF: 0.0931

Gnomad MID AF: 0.111

Gnomad NFE AF: 0.110

Gnomad OTH AF: 0.0876

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.0820 AC: 12479 AN: 152120 Hom.: 658 Cov.: 32 AF XY: 0.0816 AC XY: 6065 AN XY: 74356

Gnomad4 AFR AF: 0.0225

Gnomad4 AMR AF: 0.139

Gnomad4 ASJ AF: 0.108

Gnomad4 EAS AF: 0.00618

Gnomad4 SAS AF: 0.0546

Gnomad4 FIN AF: 0.0931

Gnomad4 NFE AF: 0.110

Gnomad4 OTH AF: 0.0858

Alfa AF: 0.0938 Hom.: 423

Bravo AF: 0.0857

Asia WGS AF: 0.0430 AC: 151 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
Cadd	Benign	0.28
Dann	Benign	0.84

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: rs17796904; hg19: chr3-20121349;