NM_014845.6:c.173A>G

Variant names:

Variant summary

Our verdict is Benign. The variant received -19 ACMG points: 1P and 20B. PP3BP4_StrongBP6_Very_StrongBS1BS2

The NM_014845.6(FIG4):c.173A>G(p.Tyr58Cys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000498 in 1,613,696 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0025 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00029 ( 4 hom. )

Consequence

FIG4
NM_014845.6 missense

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: 8.78

Publications

1 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

FIG4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -19 ACMG points.

PP3

Multiple lines of computational evidence support a deleterious effect 10: AlphaMissense, BayesDel_noAF, Cadd, Eigen, MutationAssessor, phyloP100way_vertebrate, PrimateAI, PROVEAN, REVEL, REVEL [when max_spliceai, FATHMM_MKL, MetaRNN, MutationTaster was below the threshold]

BP4

Computational evidence support a benign effect (MetaRNN=0.026361167).

BP6

Variant 6-109716452-A-G is Benign according to our data. Variant chr6-109716452-A-G is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 355033.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BS1

Variant frequency is greater than expected in population afr. GnomAdExome4 allele frequency = 0.000285 (417/1461372) while in subpopulation AFR AF = 0.00974 (326/33476). AF 95% confidence interval is 0.00887. There are 4 homozygotes in GnomAdExome4. There are 190 alleles in the male GnomAdExome4 subpopulation. Median coverage is 31. This position passed quality control check.

BS2

High Homozygotes in GnomAdExome4 at 4 AR,Unknown,AD gene

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014845.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FIG4	NM_014845.6	MANE Select	c.173A>G	p.Tyr58Cys	missense	Exon 3 of 23	NP_055660.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
FIG4	ENST00000230124.8	TSL:1 MANE Select	c.173A>G	p.Tyr58Cys	missense	Exon 3 of 23	ENSP00000230124.4
FIG4	ENST00000675523.1		c.-59A>G		5_prime_UTR_premature_start_codon_gain	Exon 3 of 23	ENSP00000502384.1
FIG4	ENST00000674933.1		c.-59A>G		5_prime_UTR_premature_start_codon_gain	Exon 3 of 22	ENSP00000502376.1

Frequencies

GnomAD3 genomes

AF:

0.00254

AC:

386

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00881

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000917

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00103

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000680

AC:

171

AN:

251432

AF XY:

0.000471

show subpopulations

Gnomad AFR exome

AF:

0.00917

Gnomad AMR exome

AF:

0.000289

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000264

Gnomad OTH exome

AF:

0.000652

GnomAD4 exome

AF:

0.000285

AC:

417

AN:

1461372

Hom.:

Cov.:

AF XY:

0.000261

AC XY:

190

AN XY:

727012

show subpopulations

African (AFR)

AF:

0.00974

AC:

326

AN:

33476

American (AMR)

AF:

0.000358

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26116

East Asian (EAS)

AF:

0.00

AC:

AN:

39672

South Asian (SAS)

AF:

0.000209

AC:

AN:

86246

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53382

Middle Eastern (MID)

AF:

0.000347

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000162

AC:

AN:

1111620

Other (OTH)

AF:

0.000613

AC:

AN:

60376

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.474

Heterozygous variant carriers

112

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

100

<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:

0.00254

AC:

387

AN:

152324

Hom.:

Cov.:

AF XY:

0.00242

AC XY:

180

AN XY:

74494

show subpopulations

African (AFR)

AF:

0.00880

AC:

366

AN:

41574

American (AMR)

AF:

0.000915

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5192

South Asian (SAS)

AF:

0.00104

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68022

Other (OTH)

AF:

0.00

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

100

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<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:

0.000985

Hom.:

Bravo

AF:

0.00315

ESP6500AA

AF:

0.00931

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.000824

AC:

100

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:7

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Benign:2

Aug 10, 2020

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Jul 16, 2019

Athena Diagnostics

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

not specified

Benign:1

May 25, 2017

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease.

Inborn genetic diseases

Benign:1

Mar 03, 2020

Ambry Genetics

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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.

Amyotrophic lateral sclerosis type 11

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease.

Charcot-Marie-Tooth disease type 4J

Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease.

Charcot-Marie-Tooth disease type 4

Benign:1

Feb 03, 2025

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Uncertain

0.13

BayesDel_noAF

Pathogenic

0.42

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.84

Eigen

Pathogenic

0.86

Eigen_PC

Pathogenic

0.82

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Uncertain

0.96

MetaRNN

Benign

0.026

MetaSVM

Uncertain

0.66

MutationAssessor

Pathogenic

3.6

PhyloP100

8.8

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-7.9

REVEL

Pathogenic

0.84

Sift

Uncertain

0.0070

Sift4G

Uncertain

0.0020

Polyphen

1.0

Vest4

0.94

MVP

0.79

MPC

1.2

ClinPred

0.093

GERP RS

5.7

Varity_R

0.48

gMVP

0.85

Mutation Taster

=70/30

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over