A brief history of p53-targeting cancer therapies
2003 — Gendicine, a p53 gene therapy, approved in China (but not elsewhere)
2012 — The first small molecule MDM2 inhibitor (RG7112, which works by preventing degradation of p53) enters trials, but did not progress to approval
2013 — Second-generation MDM2 inhibitor (Idasanutlin) reached phase 3, but failed and was dropped
2017 — A dual MDM2/MDMX inhibitor, ALRN-6924, enters trials; it has not since been approved
2020–2021 — A mutant p53 reactivator, Eprenetapopt, fails in phase 3
2023 — An MDM2 inhibitor, Milademetan, fails in phase 3
2024 — Promising phase 1 data for an MDM2 degrader
2026 — Rezatapopt phase 1 data: very promising early data, specific for the p53 Y220C mutation (present in 1% of all solid tumours)
Original Article: Phase 1 Study of Rezatapopt, a p53 Reactivator, in TP53 Y220C–Mutated Tumors (PYNNACLE study) https://nej.md/3OIQC5P
Science behind the Study: Restoring Function to a Variant of p53 in Solid Tumors https://nej.md/3N0pQW8
#Oncology #Genetics