{"entity":{"id":"mei-pharma","kind":"company","name":"MEI Pharma","aka":["MEI Pharma, Inc."],"tldr":"MEI Pharma is a San Diego company whose PI3K-delta inhibitor zandelisib for follicular lymphoma was dropped in 2022 after the FDA signalled it would need a randomised trial, following the class-wide safety review of PI3K inhibitors.","summary":"MEI Pharma, listed on Nasdaq, developed zandelisib, an intermittently dosed PI3K-delta inhibitor partnered with Kyowa Kirin, for relapsed follicular and marginal zone lymphoma; it reached the phase 3 COASTAL trial before the FDA's 2022 reassessment of PI3K inhibitors in blood cancers led the partners to stop US development. The company also studied voruciclib, a CDK9 inhibitor, in acute myeloid leukaemia, and later wound down its pipeline. It appears on OnCo as a lead sponsor of phase 3 cancer trials on ClinicalTrials.gov.","asOf":"2026-09-11","links":[{"label":"Official website","url":"https://www.meipharma.com"},{"label":"ClinicalTrials.gov: trials led by MEI Pharma","url":"https://clinicaltrials.gov/search?lead=MEI%20Pharma"}],"tags":["ctgov-sponsor"],"related":[],"cancers":["follicular-lymphoma","aml"],"sections":["targeted-therapy"],"technologies":[],"targets":["pik3cd"],"drugs":[],"companies":["kyowa-kirin"],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"notes":[],"provenance":{"editedBy":"OnCo ingestion (ClinicalTrials.gov v2 + sponsor websites)","editedOn":"2026-09-11"},"hq":"San Diego, CA","country":"US","companyType":"biotech","website":"https://www.meipharma.com","stage":"public","investors":[],"funding":[]},"route":"/companies/mei-pharma/","neighbours":{"cancer":[{"id":"aml","kind":"cancer","name":"Acute myeloid leukaemia","route":"/cancers/aml/"},{"id":"follicular-lymphoma","kind":"cancer","name":"Follicular lymphoma","route":"/cancers/follicular-lymphoma/"}],"section":[{"id":"targeted-therapy","kind":"section","name":"Targeted Therapy","route":"/fronts/targeted-therapy/"}],"target":[{"id":"pik3cd","kind":"target","name":"PI3K delta (PIK3CD)","route":"/targets/pik3cd/"}],"company":[{"id":"kyowa-kirin","kind":"company","name":"Kyowa Kirin","route":"/companies/kyowa-kirin/"}]}}