NCT04453345

TPM Regimen (Thalidomide, Prednisone and Methotrexate) in LGLL

The Efficacy of Thalidomide Plus Prednisone and Methotrexate for the Symptomatic Large Granular Lymphocytic Leukemia - a Prospective Multicenter Clinical Trial From China

• Status: Unknown
• Phase: Phase 2 / Phase 3
• Study type: Interventional
• Enrollment: 42 (estimated)
• Sponsor: Institute of Hematology & Blood Diseases Hospital, China · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Large granular lymphocytic leukemia (LGLL) is a lymphoproliferative disease, with LGL infiltration in peripheral blood and bone marrow, hepatosplenomegaly, and cytopenia. Both T-LGLL and CLPD-NK are indolent disease and share similar biology and clinical course, and treated under the same strategy. So the investigators put them together as LGLL. The investigators used TPM regimen (thalidomide + prednison + methotrexate ) to treat LGLL since 2013, and 18/20 patients (90%) obtained clinical response, including 80% complete response. Adverse events (AE) of grade 3 and above are rare and safe. Therefore, the investigators designed this multicenter clinical trial to validate the efficacy of the TPM regimen in symptomatic T-LGLL and CLPD-NK.

Detailed description

Because LGLL has continuously activated cytotoxic T lymphocytes, immunosuppressive therapy is the standard first-line therapy for T-LGLL and CLPD-NK. Previous studies showed that the overall response rate (ORR) of first-line oral immunosuppressants ranged from 21% to 85% (median: 50%). Both methotrexate and cyclosporine A are LGLL first-line treatment options, but the CR rate of methotrexate is only 21%, while the CR rate of CsA is less than 5%. There is insufficient evidence for the treatment of LGLL with prednisone and other glucocorticoids, but it can reduce RA-related inflammation and increase granulocyte levels. The TPM regimen was designed by the investigators. A pilot prospect observation showed that 18/20 (90%) patients obtained response, including 80% CR. This study is a prospective multiple center clinical trail to evaluate the efficacy of TPM regimen in the treatment of symptomatic LGLL. Eligible patients choose the initial treatment plan: thalidomide 50-100mg qn+ prednisone 0.5-1mg / kg qod +methotrexate 10mg / m2 / week. Four months is one course. Maximum three courses will be given if there is a response and thalidomide maintenance will be for another year.

Conditions

• T-LGL Leukemia
• Clpd-Nk

Interventions

Type	Name	Description
DRUG	thalidomide + prednisone + methotrexate	thalidomide 50-100mg daily at bedtime + prednisone 0.5mg/kg qod to 1mg/kg qd + methotrexate 10mg/m2 per week. 4 months one cycle, up to 3 cycles. After get partial remission, thalidomide maintenance will continue up to 2 years.

Timeline

• Start date: 2013-05-20
• Primary completion: 2023-05-20
• Completion: 2025-05-20
• First posted: 2020-07-01
• Last updated: 2020-07-01

Locations

9 sites across 1 country: China