chr14-67786228-G-A

Variant names:

Variant summary

Our verdict is Benign. The variant received -9 ACMG points: 0P and 9B. BP4_StrongBS1_SupportingBS2

The NM_015346.4(ZFYVE26):c.3025C>T(p.Arg1009Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000141 in 1,293,332 control chromosomes in the GnomAD database, including 4 homozygotes. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1009Q) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000065 ( 0 hom., cov: 30)

Exomes 𝑓: 0.00015 ( 4 hom. )

Consequence

ZFYVE26
NM_015346.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.23

Publications

1 publications found

Variant links:

Genes affected

ZFYVE26 (HGNC:20761): (zinc finger FYVE-type containing 26) This gene encodes a protein which contains a FYVE zinc finger binding domain. The presence of this domain is thought to target these proteins to membrane lipids through interaction with phospholipids in the membrane. Mutations in this gene are associated with autosomal recessive spastic paraplegia-15. [provided by RefSeq, Oct 2008]

ZFYVE26 Gene-Disease associations (from GenCC):

hereditary spastic paraplegia 15
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Myriad Women’s Health, G2P

ZFYVE26 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -9 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.026570886).

BS1

Variant frequency is greater than expected in population sas. GnomAdExome4 allele frequency = 0.00015 (175/1170360) while in subpopulation SAS AF = 0.00176 (135/76712). AF 95% confidence interval is 0.00152. There are 4 homozygotes in GnomAdExome4. There are 130 alleles in the male GnomAdExome4 subpopulation. Median coverage is 40. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

BS2

High Homozygotes in GnomAdExome4 at 4 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZFYVE26	NM_015346.4 link	c.3025C>T	p.Arg1009Trp	missense_variant	Exon 17 of 42	ENST00000347230.9	NP_056161.2	Q68DK2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZFYVE26	ENST00000347230.9 link	c.3025C>T	p.Arg1009Trp	missense_variant	Exon 17 of 42	1	NM_015346.4	ENSP00000251119.5		Q68DK2-1

Frequencies

GnomAD3 genomes

AF:

0.0000651

AC:

AN:

122892

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000296

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00134

Gnomad FIN

AF:

0.000225

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000160

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.000269

AC:

AN:

234122

AF XY:

0.000370

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 FIN exome

AF:

0.0000951

Gnomad NFE exome

AF:

0.0000279

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000150

AC:

175

AN:

1170360

Hom.:

Cov.:

AF XY:

0.000222

AC XY:

130

AN XY:

585412

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

27068

American (AMR)

AF:

0.00

AC:

AN:

39104

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

21594

East Asian (EAS)

AF:

0.00

AC:

AN:

21056

South Asian (SAS)

AF:

0.00176

AC:

135

AN:

76712

European-Finnish (FIN)

AF:

0.000155

AC:

AN:

45166

Middle Eastern (MID)

AF:

0.000224

AC:

AN:

4472

European-Non Finnish (NFE)

AF:

0.0000281

AC:

AN:

888524

Other (OTH)

AF:

0.000150

AC:

AN:

46664

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.456

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

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:

0.0000651

AC:

AN:

122972

Hom.:

Cov.:

AF XY:

0.0000707

AC XY:

AN XY:

56610

show subpopulations

African (AFR)

AF:

0.0000295

AC:

AN:

33862

American (AMR)

AF:

0.00

AC:

AN:

8972

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3324

East Asian (EAS)

AF:

0.00

AC:

AN:

3526

South Asian (SAS)

AF:

0.00134

AC:

AN:

3740

European-Finnish (FIN)

AF:

0.000225

AC:

AN:

4448

Middle Eastern (MID)

AF:

0.00

AC:

AN:

182

European-Non Finnish (NFE)

AF:

0.0000160

AC:

AN:

62376

Other (OTH)

AF:

0.00

AC:

AN:

1682

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.444

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:

0.0000329

Hom.:

Bravo

AF:

0.0000453

ExAC

AF:

0.000264

AC:

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Spastic paraplegia

Uncertain:1

Sep 28, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 1009 of the ZFYVE26 protein (p.Arg1009Trp). This variant is present in population databases (rs374605354, gnomAD 0.2%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with ZFYVE26-related conditions. ClinVar contains an entry for this variant (Variation ID: 527991). 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. 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. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.36

CADD

Pathogenic

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.068

.;T

Eigen

Benign

-0.012

Eigen_PC

Benign

-0.084

FATHMM_MKL

Benign

0.74

LIST_S2

Benign

0.84

.;T

M_CAP

Benign

0.079

MetaRNN

Benign

0.027

T;T

MetaSVM

Benign

-0.74

PhyloP100

2.2

PrimateAI

Benign

0.33

PROVEAN

Benign

-2.2

N;N

REVEL

Benign

0.20

Sift

Uncertain

0.0030

D;D

Sift4G

Pathogenic

0.0010

D;D

Polyphen

1.0

.;D

Vest4

0.53

MutPred

0.44

Loss of disorder (P = 0.0089);Loss of disorder (P = 0.0089);

MVP

0.48

MPC

0.63

ClinPred

0.23

GERP RS

2.2

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

gMVP

0.29

Mutation Taster

=99/1

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over