X-63638112-C-T

Position:

chrX-63638112-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001353921.2(ARHGEF9):c.1488G>A(p.Ser496=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000132 in 1,206,575 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 47 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., 5 hem., cov: 22)

Exomes 𝑓: 0.00013 ( 0 hom. 42 hem. )

Consequence

ARHGEF9
NM_001353921.2 synonymous

Scores

Clinical Significance

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

Conservation

PhyloP100: -1.45

Variant links:

Genes affected

ARHGEF9 (HGNC:14561): (Cdc42 guanine nucleotide exchange factor 9) The protein encoded by this gene is a Rho-like GTPase that switches between the active (GTP-bound) state and inactive (GDP-bound) state to regulate CDC42 and other genes. This brain-specific protein also acts as an adaptor protein for the recruitment of gephyrin and together these proteins facilitate receceptor recruitement in GABAnergic and glycinergic synapses. Defects in this gene are the cause of startle disease with epilepsy (STHEE), also known as hyperekplexia with epilepsy, as well as several other types of cognitive disability. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2017]

ARHGEF9 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.72).

BP6

Variant X-63638112-C-T is Benign according to our data. Variant chrX-63638112-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 465078.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chrX-63638112-C-T is described in Lovd as [Likely_benign].

BP7

Synonymous conserved (PhyloP=-1.45 with no splicing effect.

BS1

Variant frequency is greater than expected in population amr. gnomad4 allele frequency = 0.000144 (16/111098) while in subpopulation AMR AF= 0.000578 (6/10389). AF 95% confidence interval is 0.000251. There are 0 homozygotes in gnomad4. There are 5 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 5 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ARHGEF9	NM_001353921.2 linkuse as main transcript	c.1488G>A	p.Ser496=	synonymous_variant	10/10	ENST00000671741.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ARHGEF9	ENST00000671741.2 linkuse as main transcript	c.1488G>A	p.Ser496=	synonymous_variant	10/10		NM_001353921.2	A1

Frequencies

GnomAD3 genomes

AF:

0.000144

AC:

AN:

111052

Hom.:

Cov.:

AF XY:

0.000150

AC XY:

AN XY:

33268

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000578

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000281

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000151

Gnomad OTH

AF:

0.000664

GnomAD3 exomes

AF:

0.000125

AC:

AN:

176384

Hom.:

AF XY:

0.0000814

AC XY:

AN XY:

61442

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000556

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.0000741

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000767

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000131

AC:

143

AN:

1095477

Hom.:

Cov.:

AF XY:

0.000116

AC XY:

AN XY:

360999

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000829

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000187

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.000124

Gnomad4 OTH exome

AF:

0.000152

GnomAD4 genome

AF:

0.000144

AC:

AN:

111098

Hom.:

Cov.:

AF XY:

0.000150

AC XY:

AN XY:

33324

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.000578

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000282

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000151

Gnomad4 OTH

AF:

0.000655

Alfa

AF:

0.000285

Hom.:

Bravo

AF:

0.000325

ClinVar

Significance: 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	GeneDx	Sep 23, 2020	- -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Inborn genetic diseases

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Ambry Genetics

Jan 31, 2017

This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Developmental and epileptic encephalopathy, 8

Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jan 07, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.72

CADD

Benign

2.1

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

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