Dynamic CtDNA-guided Targeted Therapy in DLBCL

NCT ID: NCT06748521

Last Updated: 2024-12-27

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: PHASE2
• Total Enrollment: 108 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2024-12-31
• Study Completion Date: 2028-06-01

Brief Summary

This is a prospective, single-arm, noninferiority trial involving patients with previously untreated CD20-positive DLBCL. The aim of this study is to determine the efficacy and safety of treatment stratified based on ctDNA dynamic changes after one cycle of chemotherapy and the targeted therapy based on DLBCL genotype.

A total of 108 patients were planned to be enrolled in this trial, and the patients were stratified according to the dynamic changes of ctDNA after one cycle of chemotherapy: the chemotherapy-sensitive group continued the original R-CHOP regimen, and the potential drug resistance group received genotype-guided targeted drug combination. The whole trial included a screening period (day -28 to day -1), a treatment period, and a 2-year follow-up period.

Conditions

Diffuse Large B Cell Lymphoma (DLBCL)

Study Design

• Allocation Method: NA
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

treatment group

Group Type: EXPERIMENTAL

R-CHOP + X

Intervention Type: DRUG

Eligible participants will receive 1 cycle of R-CHOP therapy with genotyping and ctDNA testing at C1D14. Chemotherapy sensitive patients with C1D14 ctDNA negative or ctDNA LFC ≥ 2 will continue to receive R-CHOP therapy for up to 6 courses. Potentially resistant patients with C1D14 ctDNA positive and LFC \< 2 were stratified by DLBCL genotyping and treated with cycle 2-6 R-CHOP in combination with obutinib or decitabine or lenalidomide or Chidamide.

Interventions

R-CHOP + X

Eligible participants will receive 1 cycle of R-CHOP therapy with genotyping and ctDNA testing at C1D14. Chemotherapy sensitive patients with C1D14 ctDNA negative or ctDNA LFC ≥ 2 will continue to receive R-CHOP therapy for up to 6 courses. Potentially resistant patients with C1D14 ctDNA positive and LFC \< 2 were stratified by DLBCL genotyping and treated with cycle 2-6 R-CHOP in combination with obutinib or decitabine or lenalidomide or Chidamide.

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

• Signed Informed Consent Form
• Age 18-75 years at the time of signing Informed Consent Form and willingness to comply with study protocol procedures
• Previously untreated participants with CD20-positive DLBCL
• IPI score 2-5
• ECOG Performance Status of 0, 1, or 2
• Life expectancy ≥ 6 months

Exclusion Criteria

• Contraindication to any of the individual components of R-CHOP or Obutinib or Decitabine or Lenalidomide or Chidamide
• Have received systemic or local treatment including chemotherapy in the past
• Have received autologous stem cell transplantation in the past
• Past medical history of other malignant tumors, except basal cell carcinoma of the skin and cervical cancer in situ
• Accompanied by uncontrolled cardiovascular and cerebrovascular diseases, coagulopathy, connective tissue diseases, severe infectious diseases and other diseases
• Primary central nervous system lymphoma
• Left ventricular ejection fraction ≦50%
• Other concurrent and uncontrolled situation which will affect the patient's medical status based on researchers' decision
• Any of the following abnormal laboratory values (unless any of these abnormalities are due to underlying lymphoma):

• ANC < 1.0 x 10^9/L
• PLT < 75 x 10^9/L
• Hb < 100g/L
• Serum AST and ALT ≥ 2.5 x ULN
• Total bilirubin ≥ 1.5 x ULN
• Serum creatinine ≥ 1.5 x ULN
• Psychiatric patients or other patients who are known or suspected to be unable to fully accomplish with the research protocol
• Pregnant or lactating women
• Patients with positive HbsAg test results need to undergo HBV-DNA test and can be admitted to the group after turning negative. In addition, if the HBsAg test result is negative, but the HBcAb test is positive (regardless of the HBsAb status), HBV-DNA is also required；if the result is positive, patients also need to be treated to become negative before entering the group
• Patients living with HIV

• Minimum Eligible Age: 18 Years
• Maximum Eligible Age: 75 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Ruijin Hospital

OTHER

Sponsor Role: lead

Responsible Party

Zhao Weili

First Deputy Director, Hematology Department

Responsibility Role: PRINCIPAL_INVESTIGATOR

Central Contacts

Weili Zhao, MD, PhD

Role: CONTACT

Phone: +862164370045

Email: zhao.weili@yahoo.com

Other Identifiers

2023ZD0511200

Identifier Type: -

Identifier Source: org_study_id