chrX-72572738-C-T

Variant names:

• chrX-72572738-C-T
• rs61736843
• NM_018486.3:c.24G>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_018486.3(HDAC8):​c.24G>A​(p.Ala8Ala) variant causes a synonymous 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. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 21)
• Consequence: HDAC8 NM_018486.3 synonymous
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.805
• Publications: 0 publications found

Genes affected

HDAC8 (HGNC:13315): (histone deacetylase 8) 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 I of the histone deacetylase family. It catalyzes the deacetylation of lysine residues in the histone N-terminal tails and represses transcription in large multiprotein complexes with transcriptional co-repressors. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Oct 2009]

HDAC8 Gene-Disease associations (from GenCC):

• Cornelia de Lange syndrome

  Inheritance: XL, AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: ClinGen, Orphanet
• Cornelia de Lange syndrome 5

  Inheritance: XL Classification: DEFINITIVE, STRONG Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), G2P
• Wilson-Turner syndrome

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ENSG00000285547 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.63).
• BP7: Synonymous conserved (PhyloP=-0.805 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018486.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HDAC8	NM_018486.3	MANE Select	c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 11	NP_060956.1	Q9BY41-1
	HDAC8	NM_001410725.1		c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 12	NP_001397654.1	A0A3B3IS68
	HDAC8	NM_001410727.1		c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 10	NP_001397656.1	A6NFW1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HDAC8	ENST00000373573.9	TSL:1 MANE Select	c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 11	ENSP00000362674.3	Q9BY41-1
	ENSG00000285547	ENST00000648922.1		c.24G>A	p.Ala8Ala	synonymous	Exon 1 of 12	ENSP00000497072.1	A0A3B3IRV1
	HDAC8	ENST00000412342.6	TSL:1	n.24G>A		non_coding_transcript_exon	Exon 1 of 7	ENSP00000400180.1	F8WCG4

Frequencies

GnomAD3 genomes Cov.: 21

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 21

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Cornelia de Lange syndrome 5 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.63
CADD	Benign	8.5
DANN	Benign	0.91
PhyloP100		-0.81
PromoterAI		0.058	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

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

Other links and lift over

dbSNP: rs61736843; hg19: chrX-71792588;