{"slug":"proliferation","tag":"proliferation","variants":["proliferation"],"description":"No description yet","count":1,"kinds":{"biomarker":1},"related":[{"slug":"biomarker","tag":"biomarker","shared":1}],"records":[{"id":"ki-67-index","kind":"biomarker","name":"Ki-67 index (proliferation by IHC)","route":"/biomarkers/ki-67-index/","tldr":"Ki-67 is the percentage of tumour cells that are dividing. In neuroendocrine tumours it sets the grade; in breast cancer a 20 percent cut-off was briefly a condition of adjuvant abemaciclib, then dropped from the label in 2023."}]}