Phase 2 study of cladribine followed by rituximab in patients with hairy cell leukemia.
Farhad Ravandi, Susan O'Brien, Jeffrey Jorgensen...
https://pubmed.ncbi.nlm.nih.gov/21821712/Actively Recruiting
Led by M.D. Anderson Cancer Center · Updated on 2026-06-11
150
Participants Needed
1
Research Sites
N/A
Total Duration
Researchers are evaluating the side effects and effectiveness of combining cladribine and rituximab in treating patients with hairy cell leukemia. This phase II trial focuses on how well this combination works to achieve complete response and eradicate minimal residual disease. The study also examines long-term disease-free and overall survival, along with molecular predictors of outcomes. Participants receive cladribine intravenously over 2 hours daily for five days. Starting on day 28, they receive rituximab intravenously once a week for eight weeks, provided there is no disease progression or unacceptable side effects. After completing the treatment, patients are followed for one year with check-ups every three months. During the trial, participants undergo bone marrow and blood tests to assess treatment response and minimal residual disease. Researchers monitor the effectiveness of rituximab in achieving complete response and its impact on survival up to one year. Safety is also tracked, focusing on serious side effects throughout the study period.
CONDITIONS
Cladribine and Rituximab in Treating Patients With Hairy Cell Leukemia
F
Farhad Ravandi-Kashani
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M.D. Anderson Cancer Center
Lead Sponsor
National Cancer Institute (NCI)
Collaborating Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Cladribine + Rituximab | Cladribine Alone |
|---|---|---|
| What is it? | Combination therapy using cladribine and rituximab, both given intravenously in a defined protocol sequence. | Cladribine given alone by intravenous infusion as a single-agent therapy for HCL. |
| Role in trial | Investigational regimen assigned to all enrolled trial participants. | Serves as the external standard for current clinical treatment in typical HCL care, not studied directly in this trial. |
| Primary use or purpose | To evaluate whether adding rituximab to cladribine enhances response rates or improves outcomes in HCL. | Single-agent induction and relapse treatment for adults with classic HCL. |
| How is it given or performed? | Cladribine is administered by intravenous infusion, followed by a defined course of rituximab infusions. | Cladribine is given as a single-agent intravenous infusion over 5–7 consecutive days (standard protocol for HCL). |
| Evidence status | Efficacy and safety are under investigation; results are not yet posted from this trial, but similar approaches have been studied in published phase 2 settings. | High rates of durable remission and long-term survival are established with cladribine monotherapy in HCL. |
| Important limitations | The trial is non-randomized and lacks a direct internal monotherapy comparator arm; safety and efficacy results are immature as the study is ongoing. | Relapses may occur after cladribine monotherapy, and some patients may require retreatment. Risk of immunosuppression/infection also exists. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
Duration - Approximately 3 months
Participants receive cladribine intravenously once daily for 5 days, followed by rituximab intravenously once weekly for 8 weeks starting on day 28, if there is no disease progression or unacceptable side effects.
Weekly visits during rituximab treatment
Duration - 1 year
After treatment completion, participants are monitored every 3 months for 1 year to assess treatment effectiveness and safety.
Visits every 3 months
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
NA
Model
SINGLE_GROUP
Primary Purpose
TREATMENT
Number of Arms
1
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Farhad Ravandi, Susan O'Brien, Jeffrey Jorgensen...
https://pubmed.ncbi.nlm.nih.gov/21821712/M.D. Anderson Cancer Center
Lead Sponsor
National Cancer Institute (NCI)
Collaborating Sponsor