rs587777713

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PP3_Strong

The NM_014845.6(FIG4):​c.50T>C​(p.Leu17Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000505 in 1,582,760 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

FIG4
NM_014845.6 missense

Scores

8
8
3

Clinical Significance

Uncertain significance criteria provided, single submitter P:1U:2

Conservation

PhyloP100: 3.83

Publications

3 publications found
Variant links:
Genes affected
FIG4 (HGNC:16873): (FIG4 phosphoinositide 5-phosphatase) The protein encoded by this gene belongs to the SAC domain-containing protein gene family. The SAC domain, approximately 400 amino acids in length and consisting of seven conserved motifs, has been shown to possess phosphoinositide phosphatase activity. The yeast homolog, Sac1p, is involved in the regulation of various phosphoinositides, and affects diverse cellular functions such as actin cytoskeleton organization, Golgi function, and maintenance of vacuole morphology. Membrane-bound phosphoinositides function as signaling molecules and play a key role in vesicle trafficking in eukaryotic cells. Mutations in this gene have been associated with Charcot-Marie-Tooth disease, type 4J. [provided by RefSeq, Jul 2008]
FIG4 Gene-Disease associations (from GenCC):
  • Charcot-Marie-Tooth disease
    Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen, Illumina
  • Charcot-Marie-Tooth disease type 4J
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics, Laboratory for Molecular Medicine
  • Yunis-Varon syndrome
    Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, G2P
  • amyotrophic lateral sclerosis type 11
    Inheritance: Unknown, AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), ClinGen, Genomics England PanelApp
  • amyotrophic lateral sclerosis
    Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
  • bilateral parasagittal parieto-occipital polymicrogyria
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PP3
MetaRNN computational evidence supports a deleterious effect, 0.97

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
FIG4NM_014845.6 linkc.50T>C p.Leu17Pro missense_variant Exon 1 of 23 ENST00000230124.8 NP_055660.1 Q92562

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
FIG4ENST00000230124.8 linkc.50T>C p.Leu17Pro missense_variant Exon 1 of 23 1 NM_014845.6 ENSP00000230124.4 Q92562

Frequencies

GnomAD3 genomes
AF:
0.0000197
AC:
3
AN:
151948
Hom.:
0
Cov.:
32
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:
0.0000441
Gnomad OTH
AF:
0.00
GnomAD4 exome
AF:
0.00000349
AC:
5
AN:
1430812
Hom.:
0
Cov.:
31
AF XY:
0.00000423
AC XY:
3
AN XY:
708750
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
32928
American (AMR)
AF:
0.00
AC:
0
AN:
40466
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
25532
East Asian (EAS)
AF:
0.0000262
AC:
1
AN:
38206
South Asian (SAS)
AF:
0.00
AC:
0
AN:
81886
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
50788
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5720
European-Non Finnish (NFE)
AF:
0.00000365
AC:
4
AN:
1096148
Other (OTH)
AF:
0.00
AC:
0
AN:
59138
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.495
Heterozygous variant carriers
0
1
1
2
2
3
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
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
AF:
0.0000197
AC:
3
AN:
151948
Hom.:
0
Cov.:
32
AF XY:
0.0000135
AC XY:
1
AN XY:
74234
show subpopulations
African (AFR)
AF:
0.00
AC:
0
AN:
41358
American (AMR)
AF:
0.00
AC:
0
AN:
15274
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3468
East Asian (EAS)
AF:
0.00
AC:
0
AN:
5144
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4820
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
10610
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
314
European-Non Finnish (NFE)
AF:
0.0000441
AC:
3
AN:
67964
Other (OTH)
AF:
0.00
AC:
0
AN:
2084
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.492
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
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
Alfa
AF:
0.0000543
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

Significance: Uncertain significance
Submissions summary: Pathogenic:1Uncertain:2
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Charcot-Marie-Tooth disease type 4J Pathogenic:1
Jul 01, 2011
OMIM
Significance:Pathogenic
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Yunis-Varon syndrome Uncertain:1
Jan 06, 2016
Inherited Neuropathy Consortium Ii, University Of Miami
Significance:Uncertain significance
Review Status:no assertion criteria provided
Collection Method:literature only

- -

Charcot-Marie-Tooth disease type 4 Uncertain:1
Apr 24, 2023
Labcorp Genetics (formerly Invitae), Labcorp
Significance:Uncertain significance
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 17 of the FIG4 protein (p.Leu17Pro). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. ClinVar contains an entry for this variant (Variation ID: 156014). This missense change has been observed in individual(s) with Charcot-Marie-Tooth (CMT) type-4J (PMID: 21705420). This variant is present in population databases (no rsID available, gnomAD 0.007%). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
1.0
BayesDel_addAF
Pathogenic
0.35
D
BayesDel_noAF
Pathogenic
0.27
CADD
Pathogenic
28
DANN
Uncertain
1.0
DEOGEN2
Pathogenic
0.84
D
Eigen
Uncertain
0.33
Eigen_PC
Uncertain
0.29
FATHMM_MKL
Benign
0.14
N
LIST_S2
Uncertain
0.91
D
M_CAP
Uncertain
0.19
D
MetaRNN
Pathogenic
0.97
D
MetaSVM
Benign
-0.44
T
MutationAssessor
Pathogenic
3.5
H
PhyloP100
3.8
PrimateAI
Pathogenic
0.88
D
PROVEAN
Pathogenic
-6.1
D
REVEL
Uncertain
0.54
Sift
Uncertain
0.0010
D
Sift4G
Uncertain
0.0030
D
Polyphen
0.68
P
Vest4
0.98
MutPred
0.84
Loss of sheet (P = 0.0104);
MVP
0.79
MPC
1.1
ClinPred
0.95
D
GERP RS
4.7
PromoterAI
0.15
Neutral
Varity_R
0.92
gMVP
0.89
Mutation Taster
=23/77
disease causing

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: rs587777713; hg19: chr6-110012688; COSMIC: COSV107215609; COSMIC: COSV107215609; API