Genetic Variant PLEKHG4:p.Arg230His (chr16-67280975-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001129729.3(PLEKHG4):c.689G>A(p.Arg230His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000211 in 1,613,512 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000059 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000017 ( 0 hom. )

Consequence

PLEKHG4
NM_001129729.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.76

Variant links:

Genes affected

PLEKHG4 (HGNC:24501): (pleckstrin homology and RhoGEF domain containing G4) The protein encoded by this gene can function as a guanine nucleotide exchange factor (GEF) and may play a role in intracellular signaling and cytoskeleton dynamics at the Golgi apparatus. Polymorphisms in the region of this gene have been found to be associated with spinocerebellar ataxia in some study populations. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2015]

PLEKHG4 links:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.06274477).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLEKHG4	NM_001129729.3 link	c.689G>A	p.Arg230His	missense_variant	Exon 4 of 22	ENST00000379344.8	NP_001123201.1	Q58EX7-1A0A024R6X4

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLEKHG4	ENST00000379344.8 link	c.689G>A	p.Arg230His	missense_variant	Exon 4 of 22	1	NM_001129729.3	ENSP00000368649.3		Q58EX7-1

Frequencies

GnomAD3 genomes

AF:

0.0000591

AC:

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.000578

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000597

AC:

AN:

251102

Hom.:

AF XY:

0.0000810

AC XY:

AN XY:

135782

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000598

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.000140

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000171

AC:

AN:

1461306

Hom.:

Cov.:

AF XY:

0.0000179

AC XY:

AN XY:

726992

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.000353

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000755

Gnomad4 NFE exome

AF:

0.00000540

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000591

AC:

AN:

152206

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74364

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.000578

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000942

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000270

Hom.:

Bravo

AF:

0.0000491

ExAC

AF:

0.0000576

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 27, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.689G>A (p.R230H) alteration is located in exon 3 (coding exon 3) of the PLEKHG4 gene. This alteration results from a G to A substitution at nucleotide position 689, causing the arginine (R) at amino acid position 230 to be replaced by a histidine (H). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.081

BayesDel_addAF

Benign

-0.36

BayesDel_noAF

Benign

-0.39

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.25

T;T;T;.

Eigen

Benign

-0.013

Eigen_PC

Benign

0.083

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.75

.;.;T;T

M_CAP

Benign

0.031

MetaRNN

Benign

0.063

T;T;T;T

MetaSVM

Benign

-0.76

MutationAssessor

Benign

1.9

L;L;L;.

PrimateAI

Benign

0.32

PROVEAN

Benign

-2.0

N;N;N;N

REVEL

Benign

0.14

Sift

Benign

0.094

T;T;T;T

Sift4G

Benign

0.11

T;T;T;T

Polyphen

0.99

D;D;D;B

Vest4

0.19

MutPred

0.51

Gain of catalytic residue at L232 (P = 0.077);Gain of catalytic residue at L232 (P = 0.077);Gain of catalytic residue at L232 (P = 0.077);.;

MVP

0.73

MPC

0.33

ClinPred

0.095

GERP RS

5.5

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.1

Varity_R

0.051

gMVP

0.49

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

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