R-CHOP for Lymphoma: — What the Five Letters Mean

CHOP is the four-drug chemotherapy combination — Cyclophosphamide, Hydroxydaunorubicin, Oncovin, and Prednisolone. R-CHOP adds Rituximab, a monoclonal antibody that targets the CD20 protein on B-cell lymphoma cells. Rituximab is not a chemotherapy drug; it is a biological therapy given by intravenous infusion on the same day as the chemotherapy. The addition of rituximab is why most B-cell lymphoma regimens are now written as R-CHOP rather than CHOP.

No. Prednisolone has direct activity against lymphoma cells and is an active component of the regimen, not a supportive add-on. It also supports the action of the other four drugs and helps reduce the risk of infusion reactions to rituximab. On the days you take it you may notice raised energy, disrupted sleep, or increased appetite. These effects settle once you finish the tablets at the end of each cycle.

Doxorubicin — the H — can have a cumulative effect on heart muscle. Because of this, your heart function is assessed before treatment begins and monitored during the course. This monitoring is a routine part of the protocol, not a sign that something is already wrong. If your heart function changes, your oncologist will review the regimen. Tell your team promptly if you notice new breathlessness, swollen ankles, or palpitations between cycles.

Hair loss is expected and comes mainly from cyclophosphamide and doxorubicin. It usually begins within the first few weeks of treatment. For most people it is temporary, and hair begins to regrow after the regimen is completed. Texture and colour may be slightly different initially. Your care team can connect you with support for head coverings and other practical assistance during treatment.

Infusion reactions — chills, fever, flushing, or chest tightness — are most common during or shortly after the first rituximab infusion. Pre-medications are given before each infusion to reduce this risk, and you are monitored throughout. If a reaction occurs, the infusion is slowed or paused and medicines are given to settle the symptoms. Subsequent infusions can usually be given more quickly once the first is tolerated.

R-CHOP is typically given as day care — you come in for the infusion and go home the same day. The full infusion takes several hours, and the first cycle may take longer while rituximab is introduced slowly. Prednisolone tablets are taken at home over the following days. An inpatient admission may be needed if you develop a complication between cycles, such as fever with low blood counts, which requires prompt assessment.