# OnCo record tcga-tiers (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/tcga-tiers/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "tcga-tiers" ;
  schema:name "TCGA open versus controlled data tiers"@en ;
  schema:alternateName "TCGA open tier"@en, "TCGA controlled tier"@en, "open-access tier"@en, "open access data tier"@en, "controlled tier"@en, "GDC open data"@en, "GDC controlled data"@en ;
  schema:description "TCGA data comes in two tiers: open files (gene expression, somatic mutations, clinical tables, slide images) anyone can download, and controlled files (raw reads, germline variants) that need dbGaP approval."@en ;
  schema:url <https://onco.cc/terms/tcga-tiers/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:citation <https://gdc.cancer.gov/access-data/obtaining-access-controlled-data>, <https://gdc.cancer.gov/developers/gdc-application-programming-interface-api> ;
  onco:tag "cansim-terms" ;
  onco:related <https://onco.cc/collections/tcga-gdc/>, <https://onco.cc/terms/cancer-ai-vocabulary/> ;
  onco:terms <https://onco.cc/terms/controlled-access-data/>, <https://onco.cc/terms/data-use-agreements/> .