{"meta":{"exportedAt":"2026-10-04T08:05:33.332Z","formatVersion":2,"selection":{"q":"misinformation","system":"","harm":"","context":"","country":"","role":"","relation":"","evidence":"","year":"2025","response":"","severity":"","verification":"","view":"incidents","sort":"added"},"totalIncidents":1,"coverage":{"cases":1,"countries":1,"languages":1,"unknownLocation":0,"locationPending":0,"unknownLanguage":0,"unknownDate":0,"lawsuits":0,"regulatory":0,"minors":0,"coreRelations":0,"contextualRelations":0,"mixedRelations":0,"unknownRelations":1,"relationPending":1,"relationUnknown":0},"countingNote":"Distinct public cases in this selection. People counts apply within individual cases only; cross-case person overlap has not been resolved. No population incidence estimate.","affectedCountNote":"Interpret person counts with affectedCountStatus and the reported effects. Unquantified zeros are placeholders, not a measured zero.","source":"AI incidents","publisher":"NOPE","url":"https://nope.net/incidents","license":"CC BY 4.0"},"incidents":[{"id":"2025-riley-perplexity-cancer-treatment","metadataReview":{"version":1,"geography":{"basis":"Re-checked on 2026-10-01 against the son's first-person Substack essay, The Star's syndicated copy of the New York Times feature, the Newser summary and the Parade article (the New York Times original could not be read). The syndicated Times text places the affected person in Seattle during summer 2025, the period in which he was refusing the recommended leukaemia treatment and had sent his oncologist research he had done with artificial intelligence ('dying of cancer thousands of miles away in Seattle'). That passage supports event_countries=US for the treatment refusal and decline; where he used Perplexity, and where he died, are not stated beyond his own home. The same passage, the Newser summary ('a retired neuroscientist in Seattle') and the retained record support affected_person_countries=US. No lawsuit or other court proceeding is reported in any inspected source, so court_countries is empty. The son's home in Austin, Texas and a cited researcher's office in Ohio are locations of family members and correspondents, not of the affected person, and are not used. No country outside the US appears in any inspected source.","evidence":[{"kind":"existing_record","locator":"Seattle, Washington","location":"victim_description","supports":["affected_person_countries"],"countries":["US"]},{"kind":"existing_record","locator":"a 75-year-old retired neuroscientist in Seattle","location":"summary","supports":["affected_person_countries"],"countries":["US"]},{"kind":"source_body","locator":"'who was – apparently – dying of cancer thousands of miles away in Seattle' and, as the next development, 'Joe had sent his oncologist research he had done with artificial intelligence, the apparent evidence for his decision to refuse the treatment'","location":"https://www.thestar.com.my/tech/tech-news/2026/04/14/he-warned-about-the-dangers-of-ai-if-only-his-father-had-listened","supports":["event_countries","affected_person_countries"],"countries":["US"]},{"kind":"source_body","locator":"'75-year-old Joe Riley, a retired neuroscientist in Seattle'","location":"https://www.newser.com/story/387286/he-warns-consumers-about-ai-his-dad-died-after-relying-on-it.html","supports":["affected_person_countries"],"countries":["US"]}],"court_countries":[],"event_countries":["US"],"affected_person_countries":["US"]},"unresolved":["event_countries=US rests on the syndicated Times passage placing the affected person in Seattle during the summer 2025 treatment-refusal period; no inspected source says where he used Perplexity, and the place of death is described only as found during a police welfare check, without a location.","No court country: no lawsuit or other court proceeding is reported in any inspected source.","The New York Times original could not be read (live HTTP 403; Internet Archive offline or returning an error page on 2026-10-01); its language is not recorded from a read body.","The row's affected_count_evidence refers to 'The complaint', but no complaint or lawsuit exists in any inspected source; this is a row-correction lead outside this metadata pass."],"reviewed_on":"2026-10-01","source_reviews":[{"url":"https://www.nytimes.com/2026/04/13/well/ai-chatbots-cancer.html","notes":"Live fetch on 2026-10-01 returned HTTP 403. Internet Archive: CDX returned HTTP 503 ('Temporarily Offline'); the 2026 capture request returned a 403 error page (425 bytes) and a retry timed out. Not read, so its language is not recorded here. The Star's copy of the same Times article was read instead.","access":"unavailable","language":null},{"url":"https://buildcognitiveresonance.substack.com/p/the-role-of-ai-in-the-death-of-my","notes":"Read live on 2026-10-01 (HTTP 200; html lang=en). English. Benjamin Riley's first-person essay of 5 Jan 2026: diagnoses, the Perplexity self-diagnosis report sent to the oncologist, the two cited researchers' replies and the delayed treatment. It names no city, state or country for his father's residence, treatment or death.","access":"read","language":"en"},{"url":"https://www.thestar.com.my/tech/tech-news/2026/04/14/he-warned-about-the-dangers-of-ai-if-only-his-father-had-listened","notes":"Read live on 2026-10-01 (HTTP 200; html lang=en). English. Syndicated copy of the New York Times feature by Teddy Rosenbluth, dated 14 Apr 2026 ('This article originally appeared in The New York Times'); same reporting chain as the Times original. Places the affected person in Seattle in summer 2025; names his oncologist's centre (Fred Hutch Cancer Center) without a city; describes the death only as found during a police welfare check and his condo, without a location. Related-story cards on the page were not used.","access":"read","language":"en"},{"url":"https://www.newser.com/story/387286/he-warns-consumers-about-ai-his-dad-died-after-relying-on-it.html","notes":"Live fetch on 2026-10-01 returned HTTP 403. Read from the Internet Archive capture of 25 Sep 2026 (web.archive.org/web/20260925104927id_/...). The page declares no html lang attribute; the article text read is English. Summary of the Times report, same reporting chain; describes him as 'a retired neuroscientist in Seattle'. A related-story line mentioning another Seattle couple was not used.","access":"read","language":"en"},{"url":"https://parade.com/health/ai-medical-self-diagnosis-risks-joe-riley-story","notes":"Live fetch on 2026-10-01 returned HTTP 403. Read from the Internet Archive capture of 25 Sep 2026 (web.archive.org/web/20260925104927id_/...; html lang=en). English. Health-advice article that retells the Times report and quotes the son's essay; gives no location for the affected person or the events.","access":"read","language":"en"}]},"name":"Joseph Neal Riley - Perplexity Medical Misinformation and Delayed CLL Treatment Death","summary":"Joseph Neal Riley, a 75-year-old retired neuroscientist in Seattle, died in late 2025 after delaying recommended treatment for chronic lymphocytic leukemia for roughly a year. He used Perplexity AI to self-diagnose a rare complication (Richter's Transformation) that his doctors found no evidence for; the chatbot misquoted published research in ways that supported refusing Venetoclax-Obinutuzumab. His son, AI critic Benjamin Riley, documented the case in a first-person Substack essay and it was later featured by the New York Times.","incidentDate":"2025-12-01","incidentKind":"single_event","incidentDatePrecision":"range","exposurePattern":"repeated_interactions","reportedDate":"2026-01-05","aiSystem":"Perplexity","aiProduct":"Perplexity","aiCompany":"Perplexity AI","severity":"critical","verificationStatus":"credible","harmCategories":["treatment_discouragement","delusion_reinforcement","psychological_manipulation"],"harmOutcomes":["death","medical_deterioration","treatment_disruption"],"harmOutcomeSummary":"Joseph Neal Riley died after delaying recommended leukemia treatment for roughly a year while relying on a Perplexity-supported self-diagnosis that his physicians found unsupported.","frameworkFacets":["P1c","P1d","P3a","P3c","P3d","P5b","P5c"],"pathwayDirection":"inward","causationStatus":"alleged","participantUsersAffectedMin":1,"otherPeopleHarmedMin":0,"affectedCountStatus":"exact","affectedCountEvidence":"The complaint and reporting document one named participant who delayed treatment and died.","victimAgeRange":"elderly","jurisdiction":"US-WA","platformType":"assistant","outcomeType":"media_coverage","outcomeStatus":"resolved","primarySourceUrl":"https://www.nytimes.com/2026/04/13/well/ai-chatbots-cancer.html","primarySourceLabel":"The New York Times — 'He Warned About the Dangers of A.I. If Only His Father Had Listened'","firstPublishedAt":"2026-07-31T06:48:20.462175+00:00","updatedAt":"2026-10-01T02:54:29.64597+00:00","scopeVersion":"participant-v2","tags":["death","elderly","perplexity","medical-advice","treatment-discouragement","hallucination","media-coverage","us","us-wa"]}]}