What is the fine-grained topic of the following text: This profile was tested using expression data obtained from a Colon DSA gene expression array from ALMAC applied on the PETACC-3 CC population  with formalin fixed paraffin embedded (FFPE) tissue from 636 stage III CC patients treated adjuvantly with 5-FU with or without irinotecan. Only return the topic.
Testing a gene expression array on stage III CC patients treated with 5-FU with or without irinotecan.