{"entity":{"id":"chemotherapy-regimen","kind":"term","name":"Regimen and cycles","aka":["regimen","regimens","chemotherapy regimen","treatment regimen","cycles","chemotherapy cycles","cycles of chemotherapy","21-day cycle","28-day cycle","every 3 weeks","q3w","q2w","q4w","day 1","days 1-14","×6 cycles","× 6","chemotherapy cycle"],"tldr":"A regimen is a named recipe of drugs, doses and timing; a cycle is one round of it, usually two to four weeks, giving normal tissues time to recover before the next. 'Six cycles of FOLFOX' means six repeats of that recipe.","summary":"Regimens are named by acronym (R-CHOP, FOLFOX, AC-T, VRd, 7+3) or trial (the KEYNOTE-522 regimen), specify each drug's dose per body surface area or weight and its schedule (day 1, days 1-14), and are given for a defined number of cycles or until progression or intolerance. Cycle length is set by marrow recovery, so dose-dense schedules need growth factor support. Modern regimens increasingly mix chemotherapy with antibodies and immunotherapy, and fixed-duration versus continuous designs are a live question in many diseases.","asOf":"2026-09-09","wikipedia":"https://en.wikipedia.org/wiki/Chemotherapy_regimen","links":[{"label":"Wikipedia","url":"https://en.wikipedia.org/wiki/Chemotherapy_regimen"}],"tags":[],"related":["doublet-triplet","folfox-family","r-chop","dose-dense-chemotherapy","dose-modification"],"cancers":[],"sections":["chemotherapy"],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":[],"keyPapers":[],"journals":[],"dependsOn":[],"notes":[],"category":"Treatment jargon"},"route":"/terms/chemotherapy-regimen/","neighbours":{"term":[{"id":"dose-modification","kind":"term","name":"Dose reduction, interruption and discontinuation","route":"/terms/dose-modification/"},{"id":"dose-dense-chemotherapy","kind":"term","name":"Dose-dense and metronomic chemotherapy","route":"/terms/dose-dense-chemotherapy/"},{"id":"doublet-triplet","kind":"term","name":"Doublet, triplet and quadruplet regimens","route":"/terms/doublet-triplet/"},{"id":"folfox-family","kind":"term","name":"FOLFOX, FOLFIRI, FOLFIRINOX and CAPOX","route":"/terms/folfox-family/"},{"id":"r-chop","kind":"term","name":"R-CHOP (lymphoma chemoimmunotherapy)","route":"/terms/r-chop/"}],"section":[{"id":"chemotherapy","kind":"section","name":"Chemotherapy","route":"/fronts/chemotherapy/"}]}}