Genetic Variant HDAC8:c.1111+16C>T (chrX-72351717-G-A) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_ModerateBP6_ModerateBS1BS2

The NM_018486.3(HDAC8):c.1111+16C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000258 in 1,162,597 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 10 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

Frequency

Genomes: 𝑓 0.000018 ( 0 hom., 0 hem., cov: 24)

Exomes 𝑓: 0.000027 ( 0 hom. 10 hem. )

Consequence

HDAC8
NM_018486.3 intron

Scores

Clinical Significance

Benign criteria provided, single submitter B:1

Conservation

PhyloP100: 0.816

Variant links:

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 links:

ENSG00000285547 (HGNC:):

ENSG00000285547 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -12 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.13712537).

BP6

Variant X-72351717-G-A is Benign according to our data. Variant chrX-72351717-G-A is described in ClinVar as [Benign]. Clinvar id is 1633109.Status of the report is criteria_provided_single_submitter, 1 stars.

BS1

Variant frequency is greater than expected in population amr. gnomad4_exome allele frequency = 0.0000267 (28/1050096) while in subpopulation AMR AF= 0.000257 (9/34979). AF 95% confidence interval is 0.000133. There are 0 homozygotes in gnomad4_exome. There are 10 alleles in male gnomad4_exome subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Hemizygotes in GnomAdExome4 at 10 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HDAC8	NM_018486.3 link	c.1111+16C>T		intron_variant	Intron 10 of 10	ENST00000373573.9	NP_060956.1	Q9BY41-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HDAC8	ENST00000373573.9 link	c.1111+16C>T		intron_variant	Intron 10 of 10	1	NM_018486.3	ENSP00000362674.3		Q9BY41-1
ENSG00000285547	ENST00000648922.1 link	c.1111+16C>T		intron_variant	Intron 10 of 11			ENSP00000497072.1		A0A3B3IRV1

Frequencies

GnomAD3 genomes

AF:

0.0000178

AC:

AN:

112501

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34657

show subpopulations

Gnomad AFR

AF:

0.00

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:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000375

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000624

AC:

AN:

176308

Hom.:

AF XY:

0.0000488

AC XY:

AN XY:

61434

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000374

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000228

GnomAD4 exome

AF:

0.0000267

AC:

AN:

1050096

Hom.:

Cov.:

AF XY:

0.0000306

AC XY:

AN XY:

326412

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000257

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000163

Gnomad4 OTH exome

AF:

0.000135

GnomAD4 genome

AF:

0.0000178

AC:

AN:

112501

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

34657

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000375

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000340

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Cornelia de Lange syndrome 5

Benign:1

Jan 27, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.76

CADD

Benign

7.2

DANN

Benign

0.75

FATHMM_MKL

Benign

0.17

LIST_S2

Benign

0.32

T;T

MetaRNN

Benign

0.14

T;T

GERP RS

1.4

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over