2-239053516-G-A

Position:

• chr2-239053516-G-A

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6 BP7 BS1 BS2

The NM_001378414.1(HDAC4):​c.3174C>T​(p.Ala1058=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00103 in 1,613,840 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00054 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0011 (2 hom.)
• Consequence: HDAC4 NM_001378414.1 synonymous
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:3
• Conservation: PhyloP100: -2.59

Genes affected

HDAC4 (HGNC:14063): (histone deacetylase 4) Histones play a critical role in transcriptional regulation, cell cycle progression, and developmental events. Histone acetylation/deacetylation alters chromosome structure and affects transcription factor access to DNA. The protein encoded by this gene belongs to class II of the histone deacetylase/acuc/apha family. It possesses histone deacetylase activity and represses transcription when tethered to a promoter. This protein does not bind DNA directly, but through transcription factors MEF2C and MEF2D. It seems to interact in a multiprotein complex with RbAp48 and HDAC3. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.67).
• BP6: Variant 2-239053516-G-A is Benign according to our data. Variant chr2-239053516-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 195974.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=3, Uncertain_significance=1}.
• BP7: Synonymous conserved (PhyloP=-2.59 with no splicing effect.
• BS1: Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000545 (83/152328) while in subpopulation NFE AF= 0.00097 (66/68022). AF 95% confidence interval is 0.000782. There are 0 homozygotes in gnomad4. There are 43 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High AC in GnomAd4 at 83 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
HDAC4	NM_001378414.1	c.3174C>T	p.Ala1058=	synonymous_variant	26/27	ENST00000543185.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
HDAC4	ENST00000543185.6	c.3174C>T	p.Ala1058=	synonymous_variant	26/27	5	NM_001378414.1	A1
HDAC4	ENST00000345617.7	c.3159C>T	p.Ala1053=	synonymous_variant	26/27	1		P4
HDAC4	ENST00000430200.1	c.432C>T	p.Ala144=	synonymous_variant	3/4	3
HDAC4	ENST00000690129.1	n.1188C>T		non_coding_transcript_exon_variant	9/10

Frequencies

GnomAD3 genomes AF: 0.000545 AC: 83 AN: 152210 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.000265

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.000471

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.000970

Gnomad OTH AF: 0.000478

GnomAD3 exomes AF: 0.000467 AC: 117 AN: 250582 Hom.: 0 AF XY: 0.000413 AC XY: 56 AN XY: 135692

Gnomad AFR exome AF: 0.000124

Gnomad AMR exome AF: 0.000145

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.00

Gnomad FIN exome AF: 0.000139

Gnomad NFE exome AF: 0.000911

Gnomad OTH exome AF: 0.000655

GnomAD4 exome AF: 0.00108 AC: 1574 AN: 1461512 Hom.: 2 Cov.: 32 AF XY: 0.00102 AC XY: 738 AN XY: 727066

Gnomad4 AFR exome AF: 0.000239

Gnomad4 AMR exome AF: 0.000112

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.0000753

Gnomad4 NFE exome AF: 0.00138

Gnomad4 OTH exome AF: 0.000447

GnomAD4 genome AF: 0.000545 AC: 83 AN: 152328 Hom.: 0 Cov.: 33 AF XY: 0.000577 AC XY: 43 AN XY: 74480

Gnomad4 AFR AF: 0.000264

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.000471

Gnomad4 NFE AF: 0.000970

Gnomad4 OTH AF: 0.000473

Alfa AF: 0.000732 Hom.: 1

Bravo AF: 0.000559

EpiCase AF: 0.000818

EpiControl AF: 0.000771

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:3

Revision: criteria provided, conflicting classifications

Submissions by phenotype

not provided Uncertain:1 Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Jul 01, 2022	HDAC4: BP4, BP7 -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Aug 23, 2022	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Dec 01, 2016	- -

HDAC4-related disorder Benign:1

Likely benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 29, 2019

This variant is classified as likely benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.67
CADD	Benign	1.1
DANN	Benign	0.77

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: rs142279745; hg19: chr2-239975212; COSMIC: COSV61867530; COSMIC: COSV61867530;