Adult onset neurodegenerative disorder
Gene: PSAP
The rating of this gene has been updated to Green and the mode of inheritance set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted following NHS Genomic Medicine Service approval.Created: 10 Oct 2023, 4:47 p.m. | Last Modified: 10 Oct 2023, 4:47 p.m.
Panel Version: 4.37
Associated with Parkinson disease 24, autosomal dominant, susceptibility to (OMIM:619491), but not associated with the same condition in Gen2Phen. PMID: 32201884 reports three PSAP variants in three unrelated families with OMIM:619491. Supportive in vitro functional studies were also presented for the reported variants. However, it would appear that there maybe variable expressivity or incomplete penetrance of the Parkinson phenotype, as two variant carrying sibs in Family 2 had extrapyramidal signs, but did not have the full Parkinsons phenotype (PMID: 32201884).Created: 18 Apr 2023, 12:11 p.m. | Last Modified: 18 Apr 2023, 12:11 p.m.
Panel Version: 4.22
Comment on list classification: There is enough evidence for this gene to be rated GREEN at the next major review.Created: 18 Apr 2023, 11:55 a.m. | Last Modified: 18 Apr 2023, 11:55 a.m.
Panel Version: 4.22
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Well established gene-disease association for bi-allelic variants.
Now early-onset PD reported with mono-allelic variants. 6 affecteds from 3 families. Age of onset ranges from 33-60. Functional studies: Autophagic vacuole accumulation in skin fibroblasts , a-Synuclein aggregation and PSAP retention in the ER and abnormal intracellular accumulation in iPSC-dopaminergic neurons. Mouse model for one of 1 of the variants had motor deficits and dopaminergic neurodegeneration.
Sources: LiteratureCreated: 5 Mar 2021, 6:32 a.m.
Mode of inheritance
MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Phenotypes
Parkinson disease, AD
Publications
Tag Q2_23_promote_green was removed from gene: PSAP.
Source NHS GMS was added to PSAP. Source Expert Review Green was added to PSAP. Rating Changed from Amber List (moderate evidence) to Green List (high evidence)
Tag Q2_23_promote_green tag was added to gene: PSAP.
Gene: psap has been classified as Amber List (Moderate Evidence).
Phenotypes for gene: PSAP were changed from Parkinson disease, AD to {Parkinson disease 24, autosomal dominant, susceptibility to}, OMIM:619491
gene: PSAP was added gene: PSAP was added to Neurodegenerative disorders - adult onset. Sources: Literature Mode of inheritance for gene: PSAP was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted Publications for gene: PSAP were set to 32201884 Phenotypes for gene: PSAP were set to Parkinson disease, AD Review for gene: PSAP was set to GREEN