X-11118627-A-G

Position:

chrX-11118627-A-G

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP4_StrongBP6_Very_StrongBS2

The NM_005333.5(HCCS):c.521+7A>G variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000112 in 1,202,803 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 43 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., 4 hem., cov: 23)

Exomes 𝑓: 0.00011 ( 0 hom. 39 hem. )

Consequence

HCCS
NM_005333.5 splice_region, intron

Scores

Splicing: ADA: 0.0003601

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 1.43

Variant links:

Genes affected

HCCS (HGNC:4837): (holocytochrome c synthase) The protein encoded by this gene is an enzyme that covalently links a heme group to the apoprotein of cytochrome c. Defects in this gene are a cause of microphthalmia syndromic type 7 (MCOPS7). Three transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jan 2010]

HCCS links:

ARHGAP6 (HGNC:676): (Rho GTPase activating protein 6) This gene encodes a member of the rhoGAP family of proteins which play a role in the regulation of actin polymerization at the plasma membrane during several cellular processes. This protein is thought to have two independent functions, one as a GTPase-activating protein with specificity for RhoA, and another as a cytoskeletal protein that promotes actin remodeling. Multiple alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

ARHGAP6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.7).

BP6

Variant X-11118627-A-G is Benign according to our data. Variant chrX-11118627-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 129216.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS2

High Hemizygotes in GnomAd4 at 4 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	Effect	MANE	Protein
HCCS	NM_005333.5 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant	ENST00000380762.5	NP_005324.3
HCCS	NM_001122608.3 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant		NP_001116080.1
HCCS	NM_001171991.3 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant		NP_001165462.1

Ensembl

Gene	Transcript	HGVSc	Effect	TSL	MANE	Protein	Appris
HCCS	ENST00000380762.5 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant	1	NM_005333.5	ENSP00000370139	P1
HCCS	ENST00000380763.7 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant	1		ENSP00000370140	P1
HCCS	ENST00000321143.8 linkuse as main transcript	c.521+7A>G	splice_region_variant, intron_variant	2		ENSP00000326579	P1
ARHGAP6	ENST00000657361.1 linkuse as main transcript	c.1784-268T>C	intron_variant			ENSP00000499351	A2

Frequencies

GnomAD3 genomes

AF:

0.000107

AC:

AN:

112435

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

34573

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:

0.000225

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000180

AC:

AN:

183436

Hom.:

AF XY:

0.000147

AC XY:

AN XY:

67880

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000365

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.000367

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000183

Gnomad OTH exome

AF:

0.000221

GnomAD4 exome

AF:

0.000113

AC:

123

AN:

1090314

Hom.:

Cov.:

AF XY:

0.000110

AC XY:

AN XY:

355920

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000312

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000204

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000115

Gnomad4 OTH exome

AF:

0.000109

GnomAD4 genome

AF:

0.000107

AC:

AN:

112489

Hom.:

Cov.:

AF XY:

0.000115

AC XY:

AN XY:

34637

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:

0.000225

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.000147

EpiCase

AF:

0.000273

EpiControl

AF:

0.0000593

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Nov 01, 2022	ARHGAP6: BS2; HCCS: BP4, BS2 -
Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Apr 19, 2023	- -

not specified

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Genetic Services Laboratory, University of Chicago

Dec 03, 2013

- -

HCCS-related disorder

Benign:1

Likely benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 15, 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

-0.70

CADD

Benign

7.4

DANN

Benign

0.83

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.00036

dbscSNV1_RF

Benign

0.0020

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