rs869025581
Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 7P and 0B. PVS1_ModeratePP3_StrongPP5
The NM_024989.4(PGAP1):c.1090-2A>G variant causes a splice acceptor change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. 2/2 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Pathogenic (no stars).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0 ( 0 hom. )
Failed GnomAD Quality Control
Consequence
PGAP1
NM_024989.4 splice_acceptor
NM_024989.4 splice_acceptor
Scores
3
3
1
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 3.06
Genes affected
PGAP1 (HGNC:25712): (post-GPI attachment to proteins inositol deacylase 1) The protein encoded by this gene functions early in the glycosylphosphatidylinositol (GPI) biosynthetic pathway, catalyzing the inositol deacylation of GPI. The encoded protein is required for the production of GPI that can attach to proteins, and this may be an important factor in the transport of GPI-anchored proteins from the endoplasmic reticulum to the Golgi. Defects in this gene are a cause an autosomal recessive form of cognitive impairment. [provided by RefSeq, Jul 2017]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PVS1
?
Splicing variant, NOT destroyed by nmd, known LOF gene, truncates exone, which is 0.02997472 fraction of the gene. Cryptic splice site detected, with MaxEntScore 4.7, offset of -30, new splice context is: aactaatctgctcattacAGcta. Cryptic site results in inframe change. If cryptic site found is not functional and variant results in exon loss, it results in inframe change.
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. No scorers claiming Benign.
PP5
?
Variant 2-196890913-T-C is Pathogenic according to our data. Variant chr2-196890913-T-C is described in ClinVar as [Pathogenic]. Clinvar id is 222981.Status of the report is no_assertion_criteria_provided, 0 stars. Variant chr2-196890913-T-C is described in Lovd as [Likely_pathogenic].
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
PGAP1 | NM_024989.4 | c.1090-2A>G | splice_acceptor_variant | ENST00000354764.9 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
PGAP1 | ENST00000354764.9 | c.1090-2A>G | splice_acceptor_variant | 1 | NM_024989.4 | P1 |
Frequencies
GnomAD3 genomes ? Cov.: 32
GnomAD3 genomes
?
Cov.:
32
GnomAD4 exome Data not reliable, filtered out with message: AC0;AS_VQSR AF: 0.00 AC: 0AN: 1313412Hom.: 0 Cov.: 20 AF XY: 0.00 AC XY: 0AN XY: 661152
GnomAD4 exome
Data not reliable, filtered out with message: AC0;AS_VQSR
AF:
AC:
0
AN:
1313412
Hom.:
Cov.:
20
AF XY:
AC XY:
0
AN XY:
661152
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 32
GnomAD4 genome
?
Cov.:
32
ClinVar
Significance: Pathogenic
Submissions summary: Pathogenic:1
Revision: no assertion criteria provided
LINK: link
Submissions by phenotype
Intellectual disability, autosomal recessive 42 Pathogenic:1
Pathogenic, no assertion criteria provided | literature only | OMIM | May 24, 2021 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Uncertain
Cadd
Pathogenic
Dann
Uncertain
Eigen
Pathogenic
Eigen_PC
Pathogenic
FATHMM_MKL
Uncertain
D
MutationTaster
Benign
D;D;D
GERP RS
RBP_binding_hub_radar
RBP_regulation_power_radar
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_AL_spliceai
Position offset: -2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at