# OnCo record klass-01 (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/klass-01/>
  a schema:MedicalTrial ;
  onco:kind "trial" ;
  schema:identifier "klass-01", "NCT00452751" ;
  schema:name "KLASS-01"@en ;
  schema:description "KLASS-01 showed that removing an early stomach cancer through keyhole surgery is as safe for long-term survival as open surgery and causes fewer wound complications, which made laparoscopic gastrectomy the standard for early gastric cancer in Korea and beyond."@en ;
  schema:url <https://onco.cc/trials/klass-01/> ;
  schema:dateModified "2026-09-17"^^xsd:date ;
  schema:citation <https://clinicaltrials.gov/study/NCT00452751> ;
  onco:status "positive" ;
  onco:tag "subtype-trials" ;
  onco:phase "3" ;
  onco:related <https://onco.cc/key-papers/paper-jcog0912-katai-lancet-gastroenterol-hepatol-2020/> ;
  onco:cancers <https://onco.cc/cancers/early-gastric-cancer/>, <https://onco.cc/cancers/gastric/> ;
  onco:institutions <https://onco.cc/institutions/ncc-korea/> ;
  onco:people <https://onco.cc/people/hyung-ho-kim/> ;
  onco:keyPapers <https://onco.cc/key-papers/paper-klass-01-kim-jama-oncol-2019/> .