# OnCo record cd22-expression (biomarker). 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/biomarkers/cd22-expression/>
  a schema:MedicalTest ;
  onco:kind "biomarker" ;
  schema:identifier "cd22-expression" ;
  schema:name "CD22 expression (CD22-positive)"@en ;
  schema:alternateName "CD22-positive"@en, "CD22+"@en, "CD22 expression"@en, "CD22 positive ALL"@en ;
  schema:description "CD22 is a second B-cell antigen, kept even when CD19 is lost. Inotuzumab ozogamicin is labelled for CD22-positive acute lymphoblastic leukaemia."@en ;
  schema:url <https://onco.cc/biomarkers/cd22-expression/> ;
  schema:dateModified "2026-09-23"^^xsd:date ;
  schema:citation <https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=cc7014b1-c775-411d-b374-8113248b4077> ;
  onco:tag "biomarker", "surface-antigen" ;
  onco:related <https://onco.cc/biomarkers/cd19-expression/> ;
  onco:cancers <https://onco.cc/cancers/all-leukemia/>, <https://onco.cc/cancers/all-paediatric-relapsed/> ;
  onco:drugs <https://onco.cc/drugs/inotuzumab-ozogamicin/> ;
  onco:terms <https://onco.cc/terms/flow-cytometry/>, <https://onco.cc/terms/antigen-escape/> .