{"entity":{"id":"1889","kind":"year","name":"1889 in oncology","aka":["1889"],"tldr":"Everything OnCo dates to 1889: 2 entries, 1 landmark and 1 technology. Each line links to the record it was read from, so the year is a view of the corpus rather than a second copy of it.","summary":"2 dated entries in OnCo fall in 1889: 1 landmark and 1 technology.\n\nOf those, 2 to the year only. Most of the corpus dates a fact to the year, because that is what the source it was read from gives; regulatory events and the readout calendar are the parts that carry a full date.\n\nEverything on this page is generated from the other records. It holds no fact of its own, and it changes when they do.","asOf":"2026-09-25","links":[],"tags":[],"related":["1888","1892"],"cancers":[],"sections":[],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":["Generated from every dated field in the corpus, not written by hand. The groups and the fields behind them are listed in src/lib/year-groups.ts; the reader is src/lib/years.ts."],"year":1889,"events":[{"group":"history","date":"1889","precision":"year","title":"Paget's seed and soil hypothesis","note":"Metastatic cancer (cancer that has spread). Stephen Paget proposed that cancers spread to organs whose environment suits them, the founding idea of metastasis research.","from":"metastatic-cancer","refs":[]},{"group":"technology","date":"1889","precision":"year","title":"Metastatic seeding and dormancy models","note":"First use in humans or first approval, as the technology record states it.","from":"metastasis-seeding-models","refs":[]}]},"route":"/years/1889/","neighbours":{"year":[{"id":"1888","kind":"year","name":"1888 in oncology","route":"/years/1888/"},{"id":"1892","kind":"year","name":"1892 in oncology","route":"/years/1892/"}]}}