# OnCo record nsabp-b39 (trial). 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/trials/nsabp-b39/>
  a schema:MedicalTrial ;
  onco:kind "trial" ;
  schema:identifier "nsabp-b39", "NCT00103181" ;
  schema:name "NSABP B-39/RTOG 0413"@en ;
  schema:description "The largest partial-breast trial found recurrence rates within one percentage point of whole-breast treatment but could not formally prove equivalence, so accelerated partial-breast irradiation is offered to selected lower-risk women rather than everyone."@en ;
  schema:url <https://onco.cc/trials/nsabp-b39/> ;
  schema:dateModified "2026-09-16"^^xsd:date ;
  schema:citation <https://clinicaltrials.gov/study/NCT00103181>, <https://doi.org/10.1016/S0140-6736(19)32514-0> ;
  onco:status "negative" ;
  onco:tag "radiation-wave2" ;
  onco:phase "3" ;
  schema:startDate "2005-03" ;
  onco:cancers <https://onco.cc/cancers/breast-hr-positive/>, <https://onco.cc/cancers/breast-her2-positive/>, <https://onco.cc/cancers/tnbc/>, <https://onco.cc/cancers/ductal-carcinoma-in-situ/>, <https://onco.cc/cancers/breast-cancer/> ;
  onco:technologies <https://onco.cc/technologies/hdr-brachytherapy/>, <https://onco.cc/technologies/imrt-igrt/> ;
  onco:companies <https://onco.cc/companies/nrg-oncology/> ;
  onco:terms <https://onco.cc/terms/partial-breast-irradiation/> ;
  onco:trials <https://onco.cc/trials/rapid/>, <https://onco.cc/trials/targit-a/> ;
  onco:keyPapers <https://onco.cc/key-papers/paper-nsabp-b39-lancet-2019/> .