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Prospective phase II trial of first-line rituximab, methotrexate, and orelabrutinib (R-MO) in primary central nervous system lymphoma

Overview of the Study

This study focuses on a new treatment for primary central nervous system lymphoma (PCNSL), a type of blood cancer that is hard to treat due to the protective barrier in the brain. The treatment being tested is called the R-MO regimen, which includes rituximab, high-dose methotrexate, and orelabrutinib.

Key Findings

A total of 37 patients participated in this trial. Here are some important results:

  • The overall response rate (ORR) after treatment was 90.3%.
  • The complete response rate (CRR) was 87.1%.
  • The best ORR observed during the trial was 97.1%, and the best CRR was 94.1%.
  • After an average follow-up of 12.6 months, the one-year progression-free survival (PFS) rate was 83.6%.
  • The one-year overall survival rate was 89.6%.

Safety Profile

The treatment was generally safe, with the most common side effects being:

  • Neutropenia (low white blood cell count) in 45.9% of patients
  • Lymphocytopenia (low lymphocyte count) in 45.9% of patients
  • Infections in 45.9% of patients

Conclusion

The combination of orelabrutinib with high-dose methotrexate and rituximab shows promising results for treating newly diagnosed PCNSL. This treatment could be a potential first-line option for patients.

Next Steps for Clinics and Patients

Based on the trial data, clinics can set clear goals for treatment outcomes and explore the following:

  • Define measurable outcomes to track patient progress.
  • Select AI tools that meet specific clinical needs.
  • Implement a step-by-step approach, starting with pilot projects to evaluate real-world impacts.

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