# OnCo record thunder-overc (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/thunder-overc/>
  a schema:MedicalTrial ;
  onco:kind "trial" ;
  schema:identifier "thunder-overc", "NCT04820868" ;
  schema:name "THUNDER (blinded validation of Burning Rock's methylation test)"@en ;
  schema:alternateName "THUNDER"@en, "The Unintrusive Detection of EaRly-stage Cancers"@en ;
  schema:description "The Chinese validation study behind Burning Rock's OverC multi-cancer blood test, published in Annals of Oncology in 2023."@en ;
  schema:url <https://onco.cc/trials/thunder-overc/> ;
  schema:dateModified "2026-10-29"^^xsd:date ;
  schema:citation <https://clinicaltrials.gov/study/NCT04820868> ;
  onco:status "completed" ;
  onco:phase "observational" ;
  schema:startDate "2021-04-23" ;
  onco:sections <https://onco.cc/fronts/early-detection/> ;
  onco:technologies <https://onco.cc/technologies/mced/>, <https://onco.cc/technologies/liquid-biopsy/> ;
  onco:drugs <https://onco.cc/drugs/overc-mcdbt/> ;
  onco:companies <https://onco.cc/companies/burning-rock/> ;
  onco:keyPapers <https://onco.cc/key-papers/paper-gao-thunder-ann-oncol-2023/> .