Genetic Variant ZFYVE26:p.Cys2520Tyr (chr14-67748497-C-T) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_015346.4(ZFYVE26):c.7559G>A(p.Cys2520Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,296 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C2520S) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

ZFYVE26
NM_015346.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.47

Publications

0 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:

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ACMG classification

Classification was made for transcript

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

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.861

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZFYVE26	NM_015346.4 link	c.7559G>A	p.Cys2520Tyr	missense_variant	Exon 42 of 42	ENST00000347230.9	NP_056161.2	Q68DK2-1
ZFYVE26	XM_047431174.1 link	c.5234G>A	p.Cys1745Tyr	missense_variant	Exon 31 of 31		XP_047287130.1
ZFYVE26	XM_047431175.1 link	c.5141G>A	p.Cys1714Tyr	missense_variant	Exon 31 of 31		XP_047287131.1
ZFYVE26	XM_047431173.1 link	c.7416+2555G>A		intron_variant	Intron 41 of 41		XP_047287129.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZFYVE26	ENST00000347230.9 link	c.7559G>A	p.Cys2520Tyr	missense_variant	Exon 42 of 42	1	NM_015346.4	ENSP00000251119.5		Q68DK2-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461296

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

726940

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33464

American (AMR)

AF:

0.00

AC:

AN:

44716

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86234

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53356

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5460

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111902

Other (OTH)

AF:

0.00

AC:

AN:

60330

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.98

BayesDel_addAF

Pathogenic

0.33

BayesDel_noAF

Pathogenic

0.24

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Pathogenic

0.71

Eigen_PC

Pathogenic

0.76

FATHMM_MKL

Pathogenic

1.0

M_CAP

Uncertain

0.089

MetaRNN

Pathogenic

0.86

MetaSVM

Benign

-0.49

PhyloP100

7.5

PrimateAI

Pathogenic

0.83

PROVEAN

Pathogenic

-8.2

REVEL

Uncertain

0.53

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Vest4

0.85

MutPred

0.67

Gain of phosphorylation at C2520 (P = 0.0229);

MVP

0.66

MPC

0.90

ClinPred

1.0

GERP RS

5.7

gMVP

0.76

Mutation Taster

=33/67

disease causing

(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

ClinVar

Computational scores

Splicing

Publications

Other links and lift over