Home/Topics/General Medical Terms/XRP9881 General Medical Terms Cancer & Oncology Reproductive, Pregnancy & Breast Health XRP9881 Listen Save Share Print Meaning of XRP9881: A substance that is being studied in the treatment of breast cancer. Definition of XRP9881 A substance that is being studied in the treatment of breast cancer. It belongs to the family of drugs called taxane derivatives. Written and maintained by James Murray · Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations. Keep exploringRelated termsMore in General Medical Terms → Prevention & Risk human papillomavirus vaccine Built from empty shells of the virus coat, so it shows the immune system the right shape while containing no genetic material at all. Read definition → General Medical Terms AC-T AC-T is a sequential chemotherapy regimen for breast cancer that pairs two drugs given together followed by a third drug given afterward. Read definition → Biological & Chemical Substances estrogen receptor A hormone receptor that works as a gene switch, so blocking it changes what a cell builds rather than merely what it senses. Read definition → Diseases & Disorders Denys-Drash syndrome Denys-Drash syndrome is a rare genetic disorder combining early kidney failure, abnormal sexual development, and a high risk of Wilms tumor. Read definition →
Prevention & Risk human papillomavirus vaccine Built from empty shells of the virus coat, so it shows the immune system the right shape while containing no genetic material at all. Read definition →
General Medical Terms AC-T AC-T is a sequential chemotherapy regimen for breast cancer that pairs two drugs given together followed by a third drug given afterward. Read definition →
Biological & Chemical Substances estrogen receptor A hormone receptor that works as a gene switch, so blocking it changes what a cell builds rather than merely what it senses. Read definition →
Diseases & Disorders Denys-Drash syndrome Denys-Drash syndrome is a rare genetic disorder combining early kidney failure, abnormal sexual development, and a high risk of Wilms tumor. Read definition →