rs747768373

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 20 ACMG points: 20P and 0B. PVS1PS3PP5_Very_Strong

The NM_014845.6(FIG4):c.2459+1G>A variant causes a splice donor, intron change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000649 in 1,509,490 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (★★). ClinVar reports functional evidence for this variant: "SCV001416712: Studies have shown that this variant results in read‚Äêthrough from exon 20 into intron 20, which introduces a new termination codon (PMID:30740813)." and additional evidence is available in ClinVar.

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000069 ( 0 hom. )

Consequence

FIG4
NM_014845.6 splice_donor, intron

Scores

Splicing: ADA: 1.000

Clinical Significance

Pathogenic criteria provided, multiple submitters, no conflicts P:6U:1

Conservation

PhyloP100: 8.40

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: Illumina, ClinGen
Charcot-Marie-Tooth disease type 4J
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Laboratory for Molecular Medicine, Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)
amyotrophic lateral sclerosis type 11
Inheritance: AD, Unknown Classification: STRONG, LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Genomics England PanelApp
Yunis-Varon syndrome
Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: G2P, Labcorp Genetics (formerly Invitae), Orphanet
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: Pathogenic. The variant received 20 ACMG points.

PVS1

Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.

PS3

PS3 evidence extracted from ClinVar submissions: SCV001416712: Studies have shown that this variant results in read‚Äêthrough from exon 20 into intron 20, which introduces a new termination codon (PMID: 30740813).; SCV004773509: The functional analysis showed this variant results in the read-through transcript and the truncated protein with retention of partial function ( (Lenk et al. 2019. PubMed ID: 30740813).

PP5

Variant 6-109792665-G-A is Pathogenic according to our data. Variant chr6-109792665-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 246120.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

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

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	FIG4	NM_014845.6	MANE Select	c.2459+1G>A		splice_donor intron	N/A	NP_055660.1	Q92562

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
FIG4	ENST00000230124.8	TSL:1 MANE Select	c.2459+1G>A	splice_donor intron	N/A	ENSP00000230124.4	Q92562
FIG4	ENST00000674884.1		c.2477+1G>A	splice_donor intron	N/A	ENSP00000502668.1	A0A6Q8PHH5
FIG4	ENST00000674744.1		c.2453+1G>A	splice_donor intron	N/A	ENSP00000501661.1	A0A6Q8PF62

Frequencies

GnomAD3 genomes

AF:

0.0000265

AC:

AN:

151162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000243

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:

0.0000442

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000797

AC:

AN:

250894

AF XY:

0.00000737

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.0000692

AC:

AN:

1358328

Hom.:

Cov.:

AF XY:

0.0000762

AC XY:

AN XY:

682098

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31428

American (AMR)

AF:

0.00

AC:

AN:

44558

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25482

East Asian (EAS)

AF:

0.00

AC:

AN:

39090

South Asian (SAS)

AF:

0.00

AC:

AN:

84038

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52962

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5588

European-Non Finnish (NFE)

AF:

0.0000904

AC:

AN:

1018228

Other (OTH)

AF:

0.0000351

AC:

AN:

56954

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.459

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome 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

GnomAD4 genome

AF:

0.0000265

AC:

AN:

151162

Hom.:

Cov.:

AF XY:

0.0000136

AC XY:

AN XY:

73728

show subpopulations

African (AFR)

AF:

0.0000243

AC:

AN:

41070

American (AMR)

AF:

0.00

AC:

AN:

15178

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3466

East Asian (EAS)

AF:

0.00

AC:

AN:

5166

South Asian (SAS)

AF:

0.00

AC:

AN:

4812

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10274

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000442

AC:

AN:

67888

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.500

Heterozygous variant carriers

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:

0.0000587

Hom.:

Bravo

AF:

0.0000416

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.0000546

EpiControl

AF:

0.0000593

ClinVar

ClinVar submissions

Significance:Pathogenic

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

Charcot-Marie-Tooth disease type 4J (2)

not provided (2)

Charcot-Marie-Tooth disease type 4 (1)

FIG4-related disorder (1)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.50

BayesDel_noAF

Pathogenic

0.16

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

Eigen

Pathogenic

0.98

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Pathogenic

0.99

PhyloP100

8.4

GERP RS

4.9

Mutation Taster

=4/96

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

1.0

dbscSNV1_RF

Pathogenic

0.95

SpliceAI score (max)

1.0

Details are displayed if max score is > 0.2

DS_DL_spliceai

1.0

Position offset: -1

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

Computational scores

Splicing

Publications

Other links and lift over