OnCo

PPP1R15A (Protein phosphatase 1 regulatory subunit 15A) is a gene. The public catalogues list it as a drug target and a biomarker, and clinical evidence ties its variants to diagnosis, prognosis or drug response. Tied to Colorectal cancer. This dossier gathers the 0 products (0 approved), 0 trials, 0 pathways and 0 resistance routes in the corpus that involve it, with external identifiers so it can be joined to UniProt, ChEMBL, Open Targets and the rest of biology.

Biology

Recruits the serine/threonine-protein phosphatase PPP1CA to prevents excessive phosphorylation of the translation initiation factor eIF-2A/EIF2S1, thereby reversing the shut-off of protein synthesis initiated by stress-inducible kinases and facilitating recovery of cells from stress. Down-regulates the TGF-beta signalling pathway by promoting dephosphorylation of TGFB1 by PP1. May promote apoptosis by inducing p53/TP53 phosphorylation on 'Ser-15'. Plays an essential role in autophagy by tuning translation during starvation, thus enabling lysosomal biogenesis and a sustained autophagic flux. Also acts a viral restriction factor by attenuating HIV-1 and influenza A virus replication. Mechanistically, mediates the inhibition of HIV-1 TAR RNA-mediated translation. Location: Endoplasmic reticulum membrane; Mitochondrion outer membrane (UniProt). Locus 19q13.2 (HGNC).

Where it is found
  • Colorectal cancer: CIViC evidence names this disease
Class: other · Gene: PPP1R15A · Facts checked 2026-09-23 · Target page

External identifiers

Built from HGNC, Ensembl, UniProt and ChEMBL ids

Products by modality and phase

Browse products →

No product in the corpus is aimed at this target yet.

No trial in the corpus names this target or one of its products.

Resistance routes

Unaddressed routes →

The resistance atlas has no route that names this target.

No pathway diagram carries this target as a node.

Companion diagnostics

Assay registry →

No companion diagnostic in the registry measures this target.

Preclinical models

All models →

No model entry for this target yet; check the cancer entries on the models page.

No open questions recorded for this target yet. Suggest one.

Literature

Preprints →
Latest papers · live from Europe PMC
Open in Europe PMC

Query for this target: (TITLE:"PPP1R15A" OR ABSTRACT:"PPP1R15A" OR TITLE:"protein phosphatase 1 regulatory subunit 15A" OR ABSTRACT:"protein phosphatase 1 regulatory subunit 15A" OR TITLE:"Protein phosphatase 1 regulatory subunit 15A" OR ABSTRACT:"Protein phosphatase 1 regulatory subunit 15A" OR TITLE:"GADD34" OR ABSTRACT:"GADD34") AND (cancer OR tumor OR tumour OR oncology OR carcinoma OR lymphoma OR leukemia OR leukaemia OR myeloma OR sarcoma OR melanoma OR glioma). Results are unfiltered search hits about PPP1R15A, not a curated reading list.

Export

The dossier as machine-readable JSON: identifiers from HGNC, Ensembl, UniProt and ChEMBL, products with status, trials, pathways, hotspots, open questions and assays. The full entity record is in the open API at /api/v1/entities/ppp1r15a.json. Licence CC BY-NC 4.0.