2-239053517-G-T

Position:

• chr2-239053517-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP2 PP3

The NM_001378414.1(HDAC4):​c.3173C>A​(p.Ala1058Asp) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: HDAC4 NM_001378414.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.43

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]

HDAC4 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), HDAC4. . Gene score misZ 2.926 (greater than the threshold 3.09). Trascript score misZ 3.7504 (greater than threshold 3.09). GenCC has associacion of gene with neurodevelopmental disorder with central hypotonia and dysmorphic facies, 2q37 microdeletion syndrome.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.815

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
HDAC4	NM_001378414.1	c.3173C>A	p.Ala1058Asp	missense_variant	26/27	ENST00000543185.6	NP_001365343.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
HDAC4	ENST00000543185.6	c.3173C>A	p.Ala1058Asp	missense_variant	26/27	5	NM_001378414.1	ENSP00000440481.3
HDAC4	ENST00000345617.7	c.3158C>A	p.Ala1053Asp	missense_variant	26/27	1		ENSP00000264606.3
HDAC4	ENST00000430200.1	c.428C>A	p.Ala143Asp	missense_variant	3/4	3		ENSP00000410551.1
HDAC4	ENST00000690129.1	n.1187C>A		non_coding_transcript_exon_variant	9/10

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

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

Jun 12, 2024

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.34
BayesDel_addAF	Pathogenic	0.31	D
BayesDel_noAF	Pathogenic	0.20
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.79	D;.
Eigen	Uncertain	0.43
Eigen_PC	Uncertain	0.42
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D;D
M_CAP	Uncertain	0.097	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Uncertain	-0.20	T
MutationAssessor	Pathogenic	2.9	M;.
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-3.3	D;.
REVEL	Uncertain	0.35
Sift	Uncertain	0.0080	D;.
Sift4G	Uncertain	0.019	D;D
Polyphen		1.0	D;.
Vest4		0.89
MutPred		0.25		Loss of helix (P = 0.0093);.;
MVP		0.72
MPC		1.1
ClinPred		0.99	D
GERP RS		4.6
Varity_R		0.64
gMVP		0.67

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr2-239975213;