chr1-6470331-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BS1_Supporting

The NM_020631.6(PLEKHG5):c.1705G>A(p.Asp569Asn) variant causes a missense change. The variant allele was found at a frequency of 0.000562 in 1,613,990 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. D569D) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00032 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00059 ( 0 hom. )

Consequence

PLEKHG5
NM_020631.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:8

Conservation

PhyloP100: 5.58

Variant links:

Genes affected

PLEKHG5 (HGNC:29105): (pleckstrin homology and RhoGEF domain containing G5) This gene encodes a protein that activates the nuclear factor kappa B (NFKB1) signaling pathway. Mutations in this gene are associated with autosomal recessive distal spinal muscular atrophy. Multiple transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2012]

PLEKHG5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000315 (48/152202) while in subpopulation NFE AF= 0.000647 (44/68030). AF 95% confidence interval is 0.000495. There are 0 homozygotes in gnomad4. There are 21 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLEKHG5	NM_020631.6 link	c.1705G>A	p.Asp569Asn	missense_variant	Exon 16 of 21	ENST00000377728.8	NP_065682.2	O94827-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLEKHG5	ENST00000377728.8 link	c.1705G>A	p.Asp569Asn	missense_variant	Exon 16 of 21	2	NM_020631.6	ENSP00000366957.3		O94827-5

Frequencies

GnomAD3 genomes

AF:

0.000315

AC:

AN:

152202

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000965

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:

0.000647

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000291

AC:

AN:

250880

Hom.:

AF XY:

0.000280

AC XY:

AN XY:

135698

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 SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.0000465

Gnomad NFE exome

AF:

0.000600

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000588

AC:

859

AN:

1461788

Hom.:

Cov.:

AF XY:

0.000551

AC XY:

401

AN XY:

727190

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000464

Gnomad4 FIN exome

AF:

0.0000750

Gnomad4 NFE exome

AF:

0.000748

Gnomad4 OTH exome

AF:

0.000315

GnomAD4 genome

AF:

0.000315

AC:

AN:

152202

Hom.:

Cov.:

AF XY:

0.000282

AC XY:

AN XY:

74356

show subpopulations

Gnomad4 AFR

AF:

0.0000965

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000647

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000505

Hom.:

Bravo

AF:

0.000355

TwinsUK

AF:

0.00108

AC:

ALSPAC

AF:

0.000519

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000338

AC:

EpiCase

AF:

0.000218

EpiControl

AF:

0.000356

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:8

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not provided

Uncertain:4

Apr 03, 2020

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The PLEKHG5 c.1705G>A; p.Asp569Asn variant (rs200641225) is reported in the literature in an individual affected with inherited peripheral neuopathy (Antoniadi 2015). This variant is reported in ClinVar (Variation ID: 378377), and is found in the general population with an overall allele frequency of 0.030% (85/282250 alleles) in the Genome Aggregation Database. The aspartic acid at codon 569 is highly conserved, and computational analyses (SIFT: tolerated, PolyPhen-2: possibly damaging) predict conflicting effects of this variant on protein structure/function. Due to limited information, the clinical significance of the p.Asp569Asn variant is uncertain at this time. References: Antoniadi T et al. Application of targeted multi-gene panel testing for the diagnosis of inherited peripheral neuropathy provides a high diagnostic yield with unexpected phenotype-genotype variability. BMC Med Genet. 2015 Sep 21;16:84. -

Dec 30, 2024

GeneDx

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

Reported previously as a variant of uncertain significance in an individual with peripheral neuropathy; however, additional information was not provided (PMID: 26392352); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; In silico analysis suggests this variant may impact gene splicing. In the absence of RNA/functional studies, the actual effect of this sequence change is unknown.; This variant is associated with the following publications: (PMID: 26392352) -

Jun 05, 2023

Mayo Clinic Laboratories, Mayo Clinic

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

BP4 -

Breakthrough Genomics, Breakthrough Genomics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: not provided

- -

Neuronopathy, distal hereditary motor, autosomal recessive 4

Uncertain:2

Jan 13, 2018

Illumina Laboratory Services, Illumina

Significance: Uncertain significance

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, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Sep 27, 2022

Baylor Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Inborn genetic diseases

Uncertain:1

Jun 08, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The p.D569N variant (also known as c.1705G>A), located in coding exon 15 of the PLEKHG5 gene, results from a G to A substitution at nucleotide position 1705. The aspartic acid at codon 569 is replaced by asparagine, an amino acid with highly similar properties. This alteration has been seen in an individual with features of Charcot-Marie-Tooth disease type 2 (Antoniadi T et al. BMC Med. Genet., 2015 Sep;16:84). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Neuronopathy, distal hereditary motor, autosomal recessive 4;C3809309:Charcot-Marie-Tooth disease recessive intermediate C

Uncertain:1

Oct 26, 2022

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces aspartic acid, which is acidic and polar, with asparagine, which is neutral and polar, at codon 569 of the PLEKHG5 protein (p.Asp569Asn). This variant is present in population databases (rs200641225, gnomAD 0.06%). This missense change has been observed in individual(s) with inherited peripheral neuropathy (PMID: 26392352). ClinVar contains an entry for this variant (Variation ID: 378377). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). Algorithms developed to predict the effect of sequence changes on RNA splicing suggest that this variant may create or strengthen a splice site. 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

0.19

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.44

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Uncertain

0.61

.;.;.;.;.;.;.;.;D;T

Eigen

Uncertain

0.51

Eigen_PC

Uncertain

0.52

FATHMM_MKL

Uncertain

0.92

LIST_S2

Uncertain

0.96

D;.;D;D;D;D;.;D;D;D

M_CAP

Benign

0.043

MetaRNN

Uncertain

0.45

T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.93

MutationAssessor

Uncertain

2.1

.;.;.;.;.;.;.;.;M;.

PrimateAI

Uncertain

0.68

PROVEAN

Pathogenic

-4.5

D;D;D;D;D;D;D;D;D;D

REVEL

Benign

0.20

Sift

Benign

0.094

T;T;T;T;T;D;T;T;T;T

Sift4G

Pathogenic

0.0

D;D;D;D;D;D;D;D;D;D

Polyphen

1.0, 0.96, 0.72

.;.;.;.;D;D;.;.;D;P

Vest4

0.83

MVP

0.28

MPC

0.90

ClinPred

0.72

GERP RS

4.4

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.37

gMVP

0.84

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.32

Details are displayed if max score is > 0.2

DS_AG_spliceai

0.32

Position offset: -10

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over