What does chlorambucil mean?
Chlorambucil is an anticancer medication belonging to the alkylating agent class, chemically descended from the nitrogen mustards developed in the mid-twentieth century. Supplied under the brand name Leukeran, it works by damaging DNA in rapidly dividing cells, which slows or stops tumour growth. Its principal use has been the treatment of chronic lymphocytic leukaemia, and it has also been given for certain lymphomas such as Hodgkin lymphoma and for some autoimmune conditions. A notable practical advantage of chlorambucil over many other chemotherapy drugs is that it can be taken orally as a tablet, making long courses of treatment more convenient, though its side effects — including suppression of bone marrow activity — require careful monitoring. The word itself is almost exclusively found in medical writing, prescription contexts, and pharmaceutical literature rather than general conversation. It should not be confused with the antibiotic chloramphenicol, whose name resembles it closely.
nounA synthetic nitrogen mustard derivative used as an alkylating chemotherapy agent, chiefly in the treatment of chronic lymphocytic leukaemia and some lymphomas.
- A nitrogen-mustard-derived alkylating agent used orally to treat chronic lymphocytic leukaemia, certain lymphomas, and occasionally other malignancies or immune conditions.
"The haematologist prescribed chlorambucil as a well-tolerated first-line treatment for the patient's chronic lymphocytic leukaemia."
"Because chlorambucil can be taken by mouth, many elderly patients avoided hospital visits during treatment."
"Long-term use of chlorambucil carries a risk of bone marrow suppression, so blood counts were monitored regularly."
Named for its chemistry rather than any disease it treats, this gentle-sounding 'mustard' has quietly treated leukaemia for decades — taken as a simple pill.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of chlorambucil
The name chlorambucil was constructed from its chemical description: the prefix chloro- refers to the chlorine atom in the molecule (ultimately from Greek chlōros, meaning pale green), while the remainder derives from the butyric-acid-related portion of the compound's structure. The drug emerged from postwar research into nitrogen mustard compounds as potential cancer therapies, first coming into clinical use in the 1950s. It shares the chloro- element with words such as chlorine, chloride, and chlorophyll, all tracing back to that same Greek root.
How chlorambucil is actually used
Strictly a technical medical term, encountered in clinical, pharmacological, and regulatory contexts rather than everyday speech; in British spelling contexts it may appear alongside leukaemia, while US texts pair it with leukemia. It is known by the trade name Leukeran.
Easily confused with chlorambucil
Chlorambucil is a cancer chemotherapy drug, whereas chloramphenicol is a broad-spectrum antibiotic; their similar spellings make them easy to mix up despite entirely different uses.