# OnCo record germ-cell-neoplasia-in-situ (cancer). 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/cancers/germ-cell-neoplasia-in-situ/>
  a schema:MedicalCondition ;
  onco:kind "cancer" ;
  schema:identifier "germ-cell-neoplasia-in-situ" ;
  schema:name "Germ cell neoplasia in situ (GCNIS)"@en ;
  schema:alternateName "GCNIS"@en, "Intratubular germ cell neoplasia, unclassified"@en, "IGCNU"@en, "Testicular intraepithelial neoplasia"@en, "TIN"@en, "Carcinoma in situ of the testis"@en, "Germ cell neoplasia in situ (precursor)"@en ;
  schema:description "Germ cell neoplasia in situ is the pre-cancer of testicular germ cell tumours: abnormal fetal-type germ cells sitting inside the seminiferous tubules, which will become seminoma or non-seminoma if left. It is found beside almost every testicular cancer and sometimes on its own in the other testis, where low-dose radiotherapy or surgery prevents a second cancer."@en ;
  schema:url <https://onco.cc/cancers/germ-cell-neoplasia-in-situ/> ;
  schema:dateModified "2026-09-24"^^xsd:date ;
  schema:sameAs <https://en.wikipedia.org/wiki/Germ_cell_neoplasia_in_situ> ;
  schema:citation <https://www.cancer.gov/types/testicular/treatment>, <https://doi.org/10.1016/j.eururo.2016.02.029>, <https://doi.org/10.1111/his.12958>, <https://doi.org/10.1007/s00432-017-2490-7> ;
  onco:tag "subtype-page", "wave4", "testicular", "rare" ;
  onco:related <https://onco.cc/cancers/testicular/>, <https://onco.cc/cancers/seminoma/>, <https://onco.cc/cancers/non-seminoma/>, <https://onco.cc/cancers/spermatocytic-tumour/>, <https://onco.cc/cancers/embryonal-carcinoma-testis/> ;
  onco:terms <https://onco.cc/terms/carcinoma-in-situ/>, <https://onco.cc/terms/tumour-markers/> ;
  onco:standardOfCare <https://onco.cc/cancers/testicular/>, <https://onco.cc/cancers/seminoma/>, <https://onco.cc/cancers/non-seminoma/> .