Genetic Variant PGBD1:p.Lys105Arg (chr6-28284127-A-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_032507.4(PGBD1):c.314A>G(p.Lys105Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000164 in 1,461,348 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 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)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

PGBD1
NM_032507.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0570

Publications

0 publications found

Variant links:

Genes affected

PGBD1 (HGNC:19398): (piggyBac transposable element derived 1) The piggyBac family of proteins, found in diverse animals, are transposases related to the transposase of the canonical piggyBac transposon from the moth, Trichoplusia ni. This family also includes genes in several genomes, including human, that appear to have been derived from the piggyBac transposons. This gene belongs to the subfamily of piggyBac transposable element derived (PGBD) genes. The PGBD proteins appear to be novel, with no obvious relationship to other transposases, or other known protein families. This gene product is specifically expressed in the brain, however, its exact function is not known. Alternative splicing results in multiple transcript variants encoding the same protein.[provided by RefSeq, May 2010]

PGBD1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.0498392).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PGBD1	NM_032507.4 link	c.314A>G	p.Lys105Arg	missense_variant	Exon 2 of 7	ENST00000682144.1	NP_115896.1	Q96JS3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PGBD1	ENST00000682144.1 link	c.314A>G	p.Lys105Arg	missense_variant	Exon 2 of 7		NM_032507.4	ENSP00000506997.1		Q96JS3
PGBD1	ENST00000259883.3 link	c.314A>G	p.Lys105Arg	missense_variant	Exon 2 of 7	1		ENSP00000259883.3		Q96JS3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461348

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726962

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33466

American (AMR)

AF:

0.00

AC:

AN:

44672

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26090

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86186

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5760

European-Non Finnish (NFE)

AF:

0.0000216

AC:

AN:

1111704

Other (OTH)

AF:

0.00

AC:

AN:

60370

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.477

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Apr 16, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.314A>G (p.K105R) alteration is located in exon 2 (coding exon 1) of the PGBD1 gene. This alteration results from a A to G substitution at nucleotide position 314, causing the lysine (K) at amino acid position 105 to be replaced by an arginine (R). 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

0.067

BayesDel_addAF

Benign

-0.41

BayesDel_noAF

Benign

-0.82

CADD

Benign

0.73

(source)

DANN

Benign

0.93

DEOGEN2

Benign

0.0014

Eigen

Benign

-1.4

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.026

LIST_S2

Benign

0.16

M_CAP

Benign

0.0017

MetaRNN

Benign

0.050

MetaSVM

Benign

-0.95

MutationAssessor

Benign

-1.5

PhyloP100

0.057

PrimateAI

Benign

0.27

PROVEAN

Benign

0.020

REVEL

Benign

0.018

Sift

Benign

0.93

Sift4G

Benign

0.87

Polyphen

0.0

Vest4

0.049

MutPred

0.45

Loss of ubiquitination at K105 (P = 0.0218);

MVP

0.32

ClinPred

0.062

GERP RS

-2.9

Varity_R

0.022

gMVP

0.083

Mutation Taster

=100/0

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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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6-28284127-A-G

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over