rs1557189455

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2PP3_ModeratePP5

The NM_004463.3(FGD1):​c.1241C>T​(p.Pro414Leu) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000941 in 1,062,179 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: not found (cov: 22)
Exomes 𝑓: 9.4e-7 ( 0 hom. 1 hem. )

Consequence

FGD1
NM_004463.3 missense

Scores

11
5
1

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications P:2U:1

Conservation

PhyloP100: 10.0

Publications

0 publications found
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 Gene-Disease associations (from GenCC):
  • Aarskog-Scott syndrome, X-linked
    Inheritance: AD, XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), G2P, ClinGen

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP3
MetaRNN computational evidence supports a deleterious effect, 0.886
PP5
Variant X-54467883-G-A is Pathogenic according to our data. Variant chrX-54467883-G-A is described in ClinVar as Conflicting_classifications_of_pathogenicity. ClinVar VariationId is 547365.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FGD1NM_004463.3 linkc.1241C>T p.Pro414Leu missense_variant Exon 6 of 18 ENST00000375135.4 NP_004454.2

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
FGD1ENST00000375135.4 linkc.1241C>T p.Pro414Leu missense_variant Exon 6 of 18 1 NM_004463.3 ENSP00000364277.3

Frequencies

GnomAD3 genomes
Cov.:
22
GnomAD4 exome
AF:
9.41e-7
AC:
1
AN:
1062179
Hom.:
0
Cov.:
31
AF XY:
0.00000289
AC XY:
1
AN XY:
346427
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
25397
American (AMR)
AF:
0.00
AC:
0
AN:
29322
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
18742
East Asian (EAS)
AF:
0.00
AC:
0
AN:
28073
South Asian (SAS)
AF:
0.0000199
AC:
1
AN:
50262
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
38189
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
4072
European-Non Finnish (NFE)
AF:
0.00
AC:
0
AN:
823400
Other (OTH)
AF:
0.00
AC:
0
AN:
44722

Age Distribution

Exome Hom
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
22

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Pathogenic:2Uncertain:1
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

not provided Pathogenic:1Uncertain:1
Aug 29, 2023
GeneDx
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; This variant is associated with the following publications: (PMID: 32959227) -

Oct 23, 2020
Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Aarskog syndrome Pathogenic:1
Nov 01, 2016
Center for Human Genetics, Inc, Center for Human Genetics, Inc
Significance:Likely pathogenic
Review Status:criteria provided, single submitter
Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
0.92
BayesDel_addAF
Pathogenic
0.28
D
BayesDel_noAF
Pathogenic
0.16
CADD
Pathogenic
29
DANN
Uncertain
1.0
DEOGEN2
Uncertain
0.51
D
FATHMM_MKL
Pathogenic
0.99
D
LIST_S2
Pathogenic
0.98
D
M_CAP
Pathogenic
0.50
D
MetaRNN
Pathogenic
0.89
D
MetaSVM
Uncertain
0.23
D
MutationAssessor
Pathogenic
3.4
M
PhyloP100
10
PrimateAI
Uncertain
0.78
T
PROVEAN
Pathogenic
-9.3
D
REVEL
Pathogenic
0.68
Sift
Uncertain
0.0010
D
Sift4G
Pathogenic
0.0010
D
Polyphen
1.0
D
Vest4
0.70
MutPred
0.57
Loss of helix (P = 0.0093);
MVP
0.87
MPC
2.2
ClinPred
1.0
D
GERP RS
5.2
Varity_R
0.91
gMVP
0.87
Mutation Taster
=58/42
disease causing (ClinVar)

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

Other links and lift over

dbSNP: rs1557189455; hg19: chrX-54494316; COSMIC: COSV64308202; API