Genetic Variant PLAA:p.Gly23Asp (chr9-26946978-C-T) – ACMG Classification: Uncertain_significance (5 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PM2PM5PP3

The NM_001031689.3(PLAA):c.68G>A(p.Gly23Asp) variant causes a missense change. The variant allele was found at a frequency of 0.00000188 in 1,592,586 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G23V) has been classified as Pathogenic.

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)

Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

PLAA
NM_001031689.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 5.63

Variant links:

Genes affected

PLAA (HGNC:9043): (phospholipase A2 activating protein) Predicted to enable ubiquitin binding activity. Involved in cellular response to lipopolysaccharide; macroautophagy; and positive regulation of phospholipase A2 activity. Located in cytoplasm; extracellular exosome; and nucleus. [provided by Alliance of Genome Resources, Apr 2022]

PLAA links:

IFT74 (HGNC:21424): (intraflagellar transport 74) This gene encodes a core intraflagellar transport (IFT) protein which belongs to a multi-protein complex involved in the transport of ciliary proteins along axonemal microtubules. IFT proteins are found at the base of the cilium as well as inside the cilium, where they assemble into long arrays between the ciliary base and tip. This protein, together with intraflagellar transport protein 81, binds and transports tubulin within cilia and is required for ciliogenesis. Naturally occurring mutations in this gene are associated with amyotrophic lateral sclerosis--frontotemporal dementia and Bardet-Biedl Syndrome. [provided by RefSeq, Mar 2017]

IFT74 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 5 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PM5

Other missense variant is known to change same aminoacid residue: Variant chr9-26946978-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 427941.Status of the report is no_assertion_criteria_provided, 0 stars.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.832

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PLAA	NM_001031689.3 link	c.68G>A	p.Gly23Asp	missense_variant	Exon 1 of 14	ENST00000397292.8	NP_001026859.1	Q9Y263

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PLAA	ENST00000397292.8 link	c.68G>A	p.Gly23Asp	missense_variant	Exon 1 of 14	1	NM_001031689.3	ENSP00000380460.3		Q9Y263

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152242

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.94e-7

AC:

AN:

1440344

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

714618

show subpopulations

Gnomad4 AFR exome

AF:

0.0000303

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152242

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74382

show subpopulations

Gnomad4 AFR

AF:

0.0000482

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.71

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.20

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.28

T;T

Eigen

Uncertain

0.61

Eigen_PC

Uncertain

0.63

FATHMM_MKL

Uncertain

0.80

LIST_S2

Benign

0.84

T;T

M_CAP

Benign

0.059

MetaRNN

Pathogenic

0.83

D;D

MetaSVM

Benign

-0.60

MutationAssessor

Benign

1.6

L;.

PrimateAI

Pathogenic

0.85

PROVEAN

Uncertain

-2.8

D;D

REVEL

Uncertain

0.40

Sift

Uncertain

0.0030

D;D

Sift4G

Uncertain

0.014

D;D

Polyphen

1.0

D;D

Vest4

0.89

MutPred

0.50

Gain of loop (P = 0.1069);Gain of loop (P = 0.1069);

MVP

0.81

MPC

2.9

ClinPred

0.99

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.80

gMVP

0.81

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

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

Computational scores

Splicing

Publications

LitVar

Other links and lift over