# OnCo record first-line (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/first-line/>
  a schema:DefinedTerm ;
  onco:kind "term" ;
  schema:identifier "first-line" ;
  schema:name "Lines of therapy"@en ;
  schema:alternateName "first-line"@en, "second-line"@en, "third-line"@en, "later-line"@en, "later lines"@en, "1L"@en, "2L"@en, "3L"@en, "first line"@en, "second line"@en, "third line"@en, "line of therapy"@en, "front-line"@en, "frontline"@en, "previously untreated"@en, "prior lines"@en, "treatment-naive"@en ;
  schema:description "First-line is the first treatment for advanced cancer; second-line is what comes after it fails, and so on."@en ;
  schema:url <https://onco.cc/terms/first-line/> ;
  schema:dateModified "2026-09-04"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Therapy#Lines_of_therapy> ;
  schema:citation <https://www.cancer.gov/publications/dictionaries/cancer-terms/def/first-line-therapy> .