{"entity":{"id":"paper-makis-fenbendazole-case-series-retracted-2025","kind":"paper","name":"RETRACTED: Fenbendazole as an anticancer agent? A case series of self-administration in three patients","aka":[],"tldr":"A 2025 report of three patients said to have gone into remission on a dog dewormer was retracted by the journal in January 2026. It should not be cited as evidence.","summary":"The paper reported three patients with advanced breast cancer, prostate cancer and melanoma, two said to have achieved complete remission and one near-complete remission after adding fenbendazole to other therapies excluding chemotherapy, with no adverse effects (Makis case series 2025, retracted). The journal published a retraction statement on 21 January 2026 (Retraction notice 2026).","asOf":"2026-09-24","links":[{"label":"Makis case series 2025, retracted","url":"https://doi.org/10.1159/000546362"},{"label":"Retraction notice 2026","url":"https://doi.org/10.1159/000549387"},{"label":"PubMed","url":"https://pubmed.ncbi.nlm.nih.gov/40605964/"},{"label":"Retraction notice on PubMed","url":"https://pubmed.ncbi.nlm.nih.gov/41574240/"}],"tags":[],"related":[],"cancers":[],"sections":[],"technologies":["fenbendazole-ivermectin-repurposing-claims"],"targets":[],"drugs":["fenbendazole"],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":["b-misinformation"],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"provenance":{"editedBy":"OnCo agent (Claude Fable 5.1)","editedOn":"2026-09-24","note":"Written from cached ClinicalTrials.gov v2, Europe PMC, DailyMed, Drugs@FDA and WHO eEML responses; no figure appears without its source link."},"journal":"Case Reports in Oncology","year":2025,"doi":"10.1159/000546362","pmid":"40605964","authors":"Makis W, Baghli I, Martinez P.","paperType":"observational","findings":["Retracted 21 January 2026; the claims of remission no longer stand in the scholarly record."],"whatItMeans":"This paper circulates widely online. Anyone quoting it should know that the journal has withdrawn it.","caveats":["Retracted publication; the retraction notice (PMID 41574240) is indexed on PubMed."],"changedPractice":false,"participants":3},"route":"/key-papers/paper-makis-fenbendazole-case-series-retracted-2025/","neighbours":{"technology":[{"id":"fenbendazole-ivermectin-repurposing-claims","kind":"technology","name":"Fenbendazole, ivermectin and other internet 'repurposed cures'","route":"/technologies/fenbendazole-ivermectin-repurposing-claims/"}],"drug":[{"id":"fenbendazole","kind":"drug","name":"Fenbendazole (veterinary anthelmintic)","route":"/drugs/fenbendazole/"}],"bottleneck":[{"id":"b-misinformation","kind":"bottleneck","name":"Misinformation and unproven therapies","route":"/bottlenecks/b-misinformation/"}]}}