rs1555397555

Positions:

• chr14-67785896-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_015346.4(ZFYVE26):​c.3266A>G​(p.Gln1089Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ZFYVE26 NM_015346.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.48

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 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.16886204).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ZFYVE26	NM_015346.4	c.3266A>G	p.Gln1089Arg	missense_variant	18/42	ENST00000347230.9	NP_056161.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ZFYVE26	ENST00000347230.9	c.3266A>G	p.Gln1089Arg	missense_variant	18/42	1	NM_015346.4	ENSP00000251119.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Spastic paraplegia Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

May 10, 2017

In summary, this variant is a novel missense change with uncertain impact on protein function. It has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Probably Damaging"; Align-GVGD: "Class C0"). This variant is not present in population databases (ExAC no frequency) and has not been reported in the literature in individuals with a ZFYVE26-related disease. This sequence change replaces glutamine with arginine at codon 1089 of the ZFYVE26 protein (p.Gln1089Arg). The glutamine residue is highly conserved and there is a small physicochemical difference between glutamine and arginine. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.075
BayesDel_addAF	Benign	-0.082	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	22
DANN	Uncertain	1.0
DEOGEN2	Benign	0.016	.;T
Eigen	Uncertain	0.23
Eigen_PC	Benign	0.19
FATHMM_MKL	Benign	0.73	D
LIST_S2	Benign	0.63	.;T
M_CAP	Benign	0.0055	T
MetaRNN	Benign	0.17	T;T
MetaSVM	Benign	-1.0	T
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-0.80	N;N
REVEL	Benign	0.16
Sift	Benign	0.047	D;D
Sift4G	Benign	0.14	T;T
Polyphen		0.97	.;D
Vest4		0.43
MutPred		0.13		Gain of MoRF binding (P = 0.1588);Gain of MoRF binding (P = 0.1588);
MVP		0.36
MPC		0.70
ClinPred		0.71	D
GERP RS		4.2
gMVP		0.15

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

LitVar

Other links and lift over

dbSNP: rs1555397555; hg19: chr14-68252613;