Intermediate Dose of IV MTX as CNS Prophylaxis for High Risk DLBCL

Summary

Central nervous system (CNS) relapse is a devastating event of diffuse large B cell lymphoma (DLBCL). It occurs in 4%-7% of DLBCL in general and the rate is considerably higher in high-risk patients, resulting in a poor outcome.Effective methods of CNS prophylaxis have not yet been developed. Evidence for intrathecal or intravenous MTX are both controversial. In one previous study of PUMCH, IV MTX at a dose of 1g/m2 could significantly decrease the 2 year CNS relapse rate of high risk DLBCL(1.1% vs 12.1% for historic cohort, P=0.003). In current study, the investigators are aiming to confirm its efficacy through phase III study with intrathecal MTX as the controlled arm.

Timeline

Start

2021-10-08

Primary completion

2025-10-08

Completion

2025-10-08

Publications

• Results Wang W, Zhang Y, Zhang L, Yang C, Feng J, Cai H, Chen M, Cao X, Zhuang J, Zhu T, Duan M, Zhang W, Li J, Zhou D. Intravenous methotrexate at a dose of 1 g/m2 incorporated into RCHOP prevented CNS relapse in high-risk DLBCL patients: A prospective, historic controlled study. Am J Hematol. 2020 Apr;95(4):E80-E83. doi: 10.1002/ajh.25723. Epub 2020 Jan 22. No abstract available.

Drugs

Indications