A Multicenter, Retrospective Observational Study to Evaluate the Effectiveness and Safety of Polatuzumab Vedotin

Study Overview
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Brief Summary
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To assess the clinical outcomes following treatment with Pola in combination with Bendamustine, Rituximab (BR) or Rituximab (R) in patients with R/R DLBCL who are not eligible for transplantation in the real-world setting.

Detailed Description
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This study is a multi-center retrospective observational study. It aims to evaluate the effectiveness and safety of polatuzumab vedotin treatment in patients with hematopoietic stem cell transplantation ineligible relapsed/refractory diffuse large B-cell lymphoma (R/R DLBCL), who met the criteria to access Pola through the compassionate use program (CUP). Based on the medical records of patients in the four participating hospitals, the study database will be established by using the unified case report form (CRF) to search extract information the data of target population from the hospital database, that is, the variables without personal identification information.

Official Title
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A Multicenter, Retrospective Observational Study to Evaluate the Effectiveness and Safety of Polatuzumab Vedotin in the Treatment of Patients With Transplantation Ineligible Relapsed/Refractory Diffuse Large B-Cell Lymphoma

Conditions
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Diffuse Large B-Cell Lymphoma (DLBCL)

Intervention / Treatment
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* Drug: Polatuzumab Vedotin-Piiq


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Hospitalized patients Patients who enrolled in the Pola CUP program and met the following criteria: Histologically confirmed DLBCL, patients have exhausted all therapeutic options for DLBCL and have been treated with at least two prior lines of therapy including R-CHOP (or similar regimen for 1L DLBCL) Not considered to be eligible for Bone Marrow Transplantation (BMT) (both allogenic or autologous) Have documented recent progression following or during last treatment, or became intolerant to the last treatment Does not have ≥ Grade 2 peripheral neuropathy(PN) prior to receiving Pola Patients treated with Pola-BR or Pola-R regimens Exclusion Criteria: Patients participating in other clinical studies of Pola.

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Pola BR/R<br>Patients with R/R DLBCL who are enrolled in the Pola CUP program in China, and treated with Pola-BR or Pola-R regimens. | Drug: Polatuzumab Vedotin-Piiq<br>* Patients will receive a total of six cycles of Pola in combination with rituximab and bendamustine or in combination with only rituximab. A cycle is typically 21 days for DLBCL.<br>* Other names: Polatuzumab Vedotin;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Investigator-assessed best overall response (BOR) | Best overall response (BOR) assessed by the investigator, is based on either PET-CT or CT, and defined as the percentage of patients with CR or PR. | From the start of the treatment until the date of first documented progression or the completion of the treatment(up to six cycles, each cycle is 21 days) | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Objective response rate (ORR) | Objective response rate (ORR) assessed by the investigator at the end of treatment (EOT), is defined as the percentage of patients with CR or PR at the end of treatment. | At end of the treatment(up to six cycles, each cycle is 21 days) | 
| Duration of response (DOR) | DOR is defined as the time from initial complete response (CR) or partial response (PR) to disease progression, relapse, or death from any cause, whichever occurred first. | From initial CR or PR to disease progression, relapse, or death from any cause, whichever occurred first, assessed up to 25 months | 
| Complete response (CR) | CR rate is defined as the percentage of patients with CR. | At end of the treatment(up to six cycles, each cycle is 21 days) | 
| Progression free survival (PFS) | PFS is defined as the time from the start of treatment until disease progression, relapse, or death from any cause, whichever occurred first. | From the start of treatment until disease progression, relapse, or death from any cause, whichever occurred first,assessed up to 30 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Diffuse Large B-Cell Lymphoma (DLBCL), Polatuzumab Vedotin