rs146020517

chr1-6473039-T-G

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 2P and 5B. PM2 BP4_Strong BS1_Supporting

The NM_020631.6(PLEKHG5):c.931A>C(p.Asn311His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000113 in 1,613,944 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/20 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: 0.00012 (1 hom.)
• Consequence: PLEKHG5 NM_020631.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.238

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]

ACMG classification

Verdict is Likely_benign. Variant got -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.019608796).
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.0000591 (9/152198) while in subpopulation SAS AF= 0.00165 (8/4834). AF 95% confidence interval is 0.000823. There are 0 homozygotes in gnomad4. There are 6 alleles in male gnomad4 subpopulation. 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/exons	MANE	UniProt
PLEKHG5	NM_020631.6	c.931A>C	p.Asn311His	missense_variant	9/21	ENST00000377728.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PLEKHG5	ENST00000377728.8	c.931A>C	p.Asn311His	missense_variant	9/21	2	NM_020631.6	P2

Frequencies

GnomAD3 genomes AF: 0.0000591 AC: 9 AN: 152198 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00165

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.000216 AC: 54 AN: 250474 Hom.: 0 AF XY: 0.000281 AC XY: 38 AN XY: 135414

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: 0.00167

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.000490

GnomAD4 exome AF: 0.000118 AC: 173 AN: 1461746 Hom.: 1 Cov.: 34 AF XY: 0.000169 AC XY: 123 AN XY: 727156

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000224

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00188

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 8.99e-7

Gnomad4 OTH exome AF: 0.000132

GnomAD4 genome AF: 0.0000591 AC: 9 AN: 152198 Hom.: 0 Cov.: 33 AF XY: 0.0000807 AC XY: 6 AN XY: 74356

Gnomad4 AFR AF: 0.0000241

Gnomad4 AMR AF: 0.00

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00165

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.00

Gnomad4 OTH AF: 0.00

Bravo AF: 0.0000227

ESP6500AA AF: 0.000227 AC: 1

ESP6500EA AF: 0.00 AC: 0

ExAC AF: 0.000222 AC: 27

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Neuronopathy, distal hereditary motor, autosomal recessive 4;C3809309:Charcot-Marie-Tooth disease recessive intermediate C Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Invitae

Jul 06, 2022

This sequence change replaces asparagine, which is neutral and polar, with histidine, which is basic and polar, at codon 311 of the PLEKHG5 protein (p.Asn311His). This variant is present in population databases (rs146020517, gnomAD 0.2%). This variant has not been reported in the literature in individuals affected with PLEKHG5-related conditions. ClinVar contains an entry for this variant (Variation ID: 536770). Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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	0.068
BayesDel_addAF	Benign	-0.51	T
BayesDel_noAF	Benign	-0.53
Cadd	Benign	9.3
Dann	Uncertain	0.99
Eigen	Benign	-0.90
Eigen_PC	Benign	-0.98
FATHMM_MKL	Benign	0.22	N
LIST_S2	Benign	0.79	T;.;T;T;T;T;.;T;T;T
M_CAP	Benign	0.048	D
MetaRNN	Benign	0.020	T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.97	T
MutationTaster	Benign	1.0	N;N;N;N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.30	T
PROVEAN	Benign	-1.4	N;N;N;N;N;N;N;N;N;N
REVEL	Benign	0.11
Sift	Benign	0.086	T;T;T;T;D;D;T;D;D;D
Sift4G	Uncertain	0.012	D;D;D;D;D;D;D;D;D;D
Polyphen		0.90, 0.65, 0.66, 0.74	.;.;.;.;P;P;.;.;P;P
Vest4		0.34
MVP		0.38
MPC		0.31
ClinPred		0.036	T
GERP RS		1.8
Varity_R		0.051
gMVP		0.19

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: rs146020517; hg19: chr1-6533099;