rs869312815

Variant summary

Our verdict is Pathogenic. Variant got 11 ACMG points: 11P and 0B. PVS1PM2PP5

The NM_033419.5(PGAP3):​c.439_440insC​(p.Leu147ProfsTer16) variant causes a frameshift change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000025 in 1,398,720 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Pathogenic (no stars). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 0.000025 ( 0 hom. )

Consequence

PGAP3
NM_033419.5 frameshift

Scores

Not classified

Clinical Significance

Pathogenic no assertion criteria provided P:2

Conservation

PhyloP100: 2.71
Variant links:
Genes affected
PGAP3 (HGNC:23719): (post-GPI attachment to proteins phospholipase 3) This gene encodes a glycosylphosphatidylinositol (GPI)-specific phospholipase that primarily localizes to the Golgi apparatus. This ubiquitously expressed gene is predicted to encode a seven-transmembrane protein that removes unsaturated fatty acids from the sn-2 position of GPI. The remodeling of the constituent fatty acids on GPI is thought to be important for the proper association between GPI-anchored proteins and lipid rafts. The tethering of proteins to plasma membranes via posttranslational GPI-anchoring is thought to play a role in protein sorting and trafficking. Mutations in this gene cause an autosomal recessive form of neurologic hyperphosphatasia with cognitive disability (HPMRS4). Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Jul 2017]

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ACMG classification

Classification made for transcript

Verdict is Pathogenic. Variant got 11 ACMG points.

PVS1
Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.
PM2
Very rare variant in population databases, with high coverage;
PP5
Variant 17-39674672-A-AG is Pathogenic according to our data. Variant chr17-39674672-A-AG is described in ClinVar as [Pathogenic]. Clinvar id is 224646.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
PGAP3NM_033419.5 linkuse as main transcriptc.439_440insC p.Leu147ProfsTer16 frameshift_variant 4/8 ENST00000300658.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
PGAP3ENST00000300658.9 linkuse as main transcriptc.439_440insC p.Leu147ProfsTer16 frameshift_variant 4/81 NM_033419.5 P1Q96FM1-1

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD3 exomes
AF:
0.00000642
AC:
1
AN:
155798
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
81932
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:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000166
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000250
AC:
35
AN:
1398720
Hom.:
0
Cov.:
34
AF XY:
0.0000232
AC XY:
16
AN XY:
689890
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:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000325
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
Cov.:
32
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.00000756

ClinVar

Significance: Pathogenic
Submissions summary: Pathogenic:2
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Hyperphosphatasia with intellectual disability syndrome 4 Pathogenic:2
Pathogenic, no assertion criteria providedresearchInstitute for Medical Genetics and Human Genetics, Charité - Universitätsmedizin BerlinMar 01, 2016Disease causing variant in homozygous or compound heterozygous state -
Pathogenic, no assertion criteria providedliterature onlyOMIMFeb 06, 2014- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.040
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.

Other links and lift over

dbSNP: rs869312815; hg19: chr17-37830925; API