# OnCo record control-arm (term). Data CC BY-NC 4.0, attribute "Data from OnCo (onco.cc)". Whole corpus: https://onco.cc/api/v1/onco.nt
@prefix schema: <https://schema.org/> .
@prefix onco: <https://onco.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://onco.cc/terms/control-arm/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "control-arm" ;
  schema:name "Control arm and comparator (investigator's choice)"@en ;
  schema:alternateName "control arm"@en, "control group"@en, "comparator"@en, "comparator arm"@en, "active comparator"@en, "active control"@en, "standard arm"@en, "standard-of-care arm"@en, "investigator's choice"@en, "investigator choice"@en, "physician's choice"@en, "treatment of physician's choice"@en, "TPC"@en, "chemotherapy of choice"@en, "versus chemotherapy"@en, "vs chemotherapy"@en, "experimental arm"@en, "treatment arm"@en, "head-to-head"@en, "head to head"@en, "control arms"@en, "comparators"@en ;
  schema:description "The group in a randomised trial that gets the existing standard treatment, against which the new drug is judged. Whether the control is the true current standard, an outdated one, or a menu of options chosen by each doctor ('investigator's choice') changes how much a positive result means."@en ;
  schema:url <https://onco.cc/terms/control-arm/> ;
  schema:dateModified "2026-09-09"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Scientific_control> ;
  schema:citation <https://en.wikipedia.org/wiki/Scientific_control> ;
  onco:related <https://onco.cc/terms/standard-of-care/>, <https://onco.cc/terms/double-blind/>, <https://onco.cc/terms/backbone-add-on/>, <https://onco.cc/terms/non-inferiority/>, <https://onco.cc/terms/trial-failure-modes/>, <https://onco.cc/terms/external-control-arm/>, <https://onco.cc/terms/clinical-equipoise/>, <https://onco.cc/terms/pragmatic-trial/> ;
  onco:sections <https://onco.cc/fronts/drug-discovery/> ;
  onco:trials <https://onco.cc/trials/destiny-breast04/>, <https://onco.cc/trials/keynote-024-189/>, <https://onco.cc/trials/act-iv/>, <https://onco.cc/trials/convert/> .