CNS Involvement of Systemic Lymphoma, DLBCL - Diffuse Large B Cell Lymphoma, Immunochemotherapy, Pirtobrutinib
Conditions
Brief summary
This is an open-label, prospective, single-arm, multicenter study designed to evaluate the efficacy and safety of MTX plus pirtobrutinib combined with routinely-used clinical chemoimmunotherapy regimens in patients with DLBCL and central nervous system (CNS) involvement.
Detailed description
This was an open-label, prospective, single-arm, multicenter study designed to evaluate the efficacy and safety of MTX plus pirtobrutinib combined with conventional clinical chemoimmunotherapy regimens in patients with DLBCL and central nervous system (CNS) involvement. Subjects meeting the inclusion/exclusion criteria were enrolled into the experimental arm after providing written informed consent. Each treatment cycle lasted 3 weeks. Following 6 cycles of induction therapy, subjects who failed to achieve partial response (PR) or experienced disease progression at any time point were withdrawn from the study and received salvage therapy. Subjects achieving complete response (CR) or PR proceeded to autologous stem-cell transplantation if they were young and eligible for transplantation. For patients with stable disease (SD) or progressive disease (PD), subsequent treatment was administered at the investigator's discretion, followed by follow-up observation for up to 3 years.
Interventions
DRUGpirtobrutinib+MTX+immunolchemotherapy
Induction therapy: Pirtobrutinib 200 mg once daily, combined with MTX (thiotepa for patients intolerant to MTX) plus chemoimmunotherapy regimens. MTX 3.5 g/m² or thiotepa 30 mg/m²; R-CHOP regimen: Rituximab 375 mg/m² Day 0 Cyclophosphamide 750 mg/m² Day 1 Doxorubicin 50 mg/m² Day 1 Vincristine 1.4 mg/m² Day 1 Prednisone 100 mg/day Days 1-5 MTX 3.5 g/m² or thiotepa 30 mg/m²; Pola-R-CHP regimen: Rituximab 375 mg/m² Day 1 Cyclophosphamide 750 mg/m² Day 1 Doxorubicin 50 mg/m² Day 1 Prednisone 100 mg/day Days 1-5 Polatuzumab vedotin 1.8 mg/kg Day 1 Each cycle was 21 days, for a total of 6 cycles. Consolidation therapy: After achieving CR or PR, young and transplant-eligible subjects could receive autologous stem-cell transplantation.
Sponsors
Pengpeng Xu
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
14 Years to 80 Years
Healthy volunteers
No
Inclusion criteria
Patients must satisfy all of the following conditions to be enrolled in this study: 1.Fully understand the study and voluntarily provide written informed consent. 2.Age: 14-80 years old. 3.Estimated survival of more than 3 months as judged by the investigator. 4.Histologically or cytologically / flow-cytometry confirmed B-cell-derived diffuse large B-cell lymphoma (DLBCL). 5.Central nervous system (CNS) involvement: diagnosis is established if any one of the following is present: symptoms related to CNS involvement, abnormal imaging findings, or pathological evidence (positive cerebrospinal fluid (CSF) cytology, positive biopsy of brain parenchymal lesions, or positive CSF-ctDNA). 6.Non-hematologic toxicities related to prior therapy shall have recovered to Grade 1 or baseline (per NCI-CTCAE Version 5.0), alopecia excluded. 7.Bone marrow and organ function meet the following criteria (no blood transfusion, G-CSF administration, or pharmacologic correction within 14 days prior to screening): 1. Bone marrow function: absolute neutrophil count (ANC) ≥ 1.0 × 10⁹/L; platelet count ≥ 50 × 10⁹/L; hemoglobin ≥ 60 g/L. 2. Liver function: serum total bilirubin ≤ 1.5 × ULN (≤ 3.0 × ULN in the presence of liver involvement); aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 × ULN (≤ 5.0 × ULN in the presence of liver involvement). 3. Coagulation function: international normalized ratio (INR) and activated partial thromboplastin time (aPTT) ≤ 1.5 × ULN. 4. Renal function: serum creatinine ≤ 1.5 × ULN or estimated creatinine clearance ≥ 30 mL/min. 5. Calculationformula(Cockcroft-Gault):Male:Cr(mL/min) = (140 - age) × bodyweight (kg) / (72 × serum creatinine(mg/dL))Female:Cr(mL/min) = (140 - age) × body weight (kg) × 0.85 / (72 × serum creatinine (mg/dL)) 8.Women of child-bearing potential and men with reproductive potential have no plan for conception with their partners during the study and for 3 months after treatment discontinuation. They must adopt one of the following effective contraceptive measures throughout the study period and for 3 months after treatment discontinuation: abstinence, physical contraception (e.g., sterilization, condoms), or hormonal contraceptives initiated at least 3 months prior to the first study drug administration. Male subjects shall refrain from sperm donation from treatment initiation through 3 months after treatment discontinuation. The patient or legal guardian voluntarily signs the informed consent form. 9.Good compliance and willingness to adhere to visit schedules, drug administration plans, laboratory tests, and other study procedures.
Exclusion criteria
Patients meeting any one of the following criteria will be excluded from this study: 1. Contraindication to any drug in the treatment regimen. 2. History of active liver disease, including viral or other hepatitis, or liver cirrhosis. (Active hepatitis B is defined as HBV-DNA above the upper limit of normal; active hepatitis C is defined as positive HCV antibody. Subjects with positive HCV antibody but negative HCV-RNA are eligible for enrollment.) 3. Human immunodeficiency virus (HIV) infection. 4. Congestive heart failure (New York Heart Association \[NYHA\] functional class \> 2); medical history of acute myocardial infarction, unstable angina pectoris, stroke, or transient ischemic attack within the preceding six months. 5. Congenital long-QT syndrome, or QTc \> 480 ms. (Note: QTc interval shall be calculated by the Fridericia's formula: QTcF = QT/(RR)\^0.33.) 6. Pregnant or breastfeeding women, or subjects planning to become pregnant during the study period. 7. Documented prior history of neurological or psychiatric disorders; or history of psychotropic substance abuse or illicit drug use.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| CRR(complete remission rate) after 6 cycles of induction therapy | Week 18，at the end of induction therapy(each cycle is 21 days) |
Secondary
| Measure | Time frame |
|---|---|
| 2-year PFS rate | 2 years |
| overall survival (OS) | From first study treatment until death from any cause, up to 4 years |
| objective response rate (ORR) | week 18，at the end of 6 cycles of induction therapy(each cycle is 21 days ) |
Countries
China
Contacts
CONTACTLi Wang, PhD
Outcome results
None listed