Variant chrX-54446242-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2

The NM_004463.3(FGD1):c.2753G>A(p.Arg918Gln) variant causes a missense change. The variant allele was found at a frequency of 0.0000146 in 1,097,701 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 5 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 23)

Exomes 𝑓: 0.000015 ( 0 hom. 5 hem. )

Consequence

FGD1
NM_004463.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.74

Variant links:

Genes affected

FGD1 (HGNC:3663): (FYVE, RhoGEF and PH domain containing 1) This gene encodes a protein that contains Dbl (DH) and pleckstrin (PH) homology domains and is similar to the Rho family of small GTP-binding proteins. The encoded protein specifically binds to the Rho family GTPase Cdc42Hs and can stimulate the GDP-GTP exchange of the isoprenylated form of Cdc42Hs. It also stimulates the mitogen activated protein kinase cascade leading to c-Jun kinase SAPK/JNK1 activation. Defects in this gene are the cause of the faciogenital dysplasia in Aarskog-Scott syndrome and a syndromatic form of X-linked cognitive disability. [provided by RefSeq, Jul 2017]

FGD1 links:

TSR2 (HGNC:25455): (TSR2 ribosome maturation factor) The protein encoded by this gene appears to repress the transcription of NF-kappaB and may be involved in apoptosis. Defects in this gene are a cause of Diamond-Blackfan anemia. [provided by RefSeq, Oct 2016]

TSR2 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), FGD1. . Gene score misZ 3.5183 (greater than the threshold 3.09). GenCC has associacion of gene with Aarskog-Scott syndrome, X-linked.

BP4

Computational evidence support a benign effect (MetaRNN=0.2773967).

BS2

High Hemizygotes in GnomAdExome4 at 5 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
FGD1	NM_004463.3 linkuse as main transcript	c.2753G>A	p.Arg918Gln	missense_variant	18/18	ENST00000375135.4
TSR2	NM_058163.3 linkuse as main transcript	c.*1692C>T		3_prime_UTR_variant	5/5	ENST00000375151.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
FGD1	ENST00000375135.4 linkuse as main transcript	c.2753G>A	p.Arg918Gln	missense_variant	18/18	1	NM_004463.3	P1
TSR2	ENST00000375151.5 linkuse as main transcript	c.*1692C>T		3_prime_UTR_variant	5/5	1	NM_058163.3	P1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000111

AC:

AN:

180889

Hom.:

AF XY:

0.0000152

AC XY:

AN XY:

65707

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

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:

0.0000124

Gnomad OTH exome

AF:

0.000225

GnomAD4 exome

AF:

0.0000146

AC:

AN:

1097701

Hom.:

Cov.:

AF XY:

0.0000138

AC XY:

AN XY:

363099

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

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:

0.0000178

Gnomad4 OTH exome

AF:

0.0000217

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 07, 2023

The c.2753G>A (p.R918Q) alteration is located in exon 18 (coding exon 18) of the FGD1 gene. This alteration results from a G to A substitution at nucleotide position 2753, causing the arginine (R) at amino acid position 918 to be replaced by a glutamine (Q). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.22

BayesDel_noAF

Benign

-0.56

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.32

FATHMM_MKL

Uncertain

0.78

LIST_S2

Uncertain

0.88

M_CAP

Benign

0.023

MetaRNN

Benign

0.28

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.1

MutationTaster

Benign

0.98

PrimateAI

Uncertain

0.58

PROVEAN

Benign

-1.7

REVEL

Benign

0.099

Sift

Benign

0.29

Sift4G

Benign

0.59

Polyphen

0.30

Vest4

0.14

MutPred

0.50

Loss of MoRF binding (P = 0.0262);

MVP

0.63

MPC

2.0

ClinPred

0.32

GERP RS

5.8

Varity_R

0.18

gMVP

0.79

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