Relapsed/Refractory Indolent B Cell Non-Hodgkin LymphomasPhase 2NCT02086175
A Phase 2 Clinical Trial of Rituxan and B-Glucan PGG in Relapsed Indolent Non-Hodgkin Lymphoma
A Phase 2 study testing Imprime PGG and Rituximab in people with Relapsed/Refractory Indolent B Cell Non-Hodgkin Lymphomas, run by Dana-Farber Cancer Institute at 1 site in United States.
Trial summary
This research study is evaluating a drug combination called Imprime PGG and Rituximab as a possible treatment for relapsed/refractory indolent B cell non-Hodgkin lymphomas (NHL). Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Relapsed/Refractory Indolent B Cell Non-Hodgkin Lymphomas
- What is being tested?
- Imprime PGG and Rituximab
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 25 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 2014to 1 Feb 2021
- Phase
- Phase 2
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants must meet the following criteria on screening examination to be eligible to participate in the study:
- Patients must have histologically determined indolent NHL that is relapsed or primary refractory after initial therapy. Indolent NHL includes the morphologic and clinical variants:
- Follicular lymphoma, grades 1-3a
- Marginal zone lymphoma (extranodal, nodal, or splenic)
- All nodal marginal zone lymphomas are eligible
- Extranodal marginal zone lymphomas of the stomach (gastric MALT lymphomas) may not be candidates for cure with antibiotics or local radiotherapy. Patients who have failed antibiotics or local therapy are eligible for the protocol as long as they have measurable disease and are naïve to chemotherapy and monoclonal antibody therapy.
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- Splenic marginal zone lymphoma patients may have received prior splenectomy as long as they have measurable disease and are naïve to chemotherapy and monoclonal antibody therapy.
- Re-biopsy is not mandated at relapse unless there is clinical suspicion about an alternate diagnosis.
- Between 1-3 prior lines of chemoimmunotherapy and/or monotherapy with rituximab. Patients may not have had prior autologous or allogeneic stem cell transplantation.
- Measurable disease that has not been previously irradiated on CT scans of at least 2 cm, OR if the patient has had previous radiation to the marker lesion(s), there must be evidence of progression since the radiation. Imaging must be completed no greater than 4 weeks prior to study enrollment.
- ECOG performance status 0-2 (Appendix B, Section 17.2)
- Absolute neutrophil count ≥1000 prior to treatment
- Oxygen saturation ≥ 90%, no more than 2 LPM oxygen
- Serum creatinine ≤ 1.5 X ULN
- AST ≤ 3 X ULN
- Total bilirubin ≤ 1.5 X ULN (unless there is lymphoma in the liver)
- Age ≥18 years
- Ability to understand and the willingness to sign a written informed consent document.
Who cannot join
- Participants who exhibit any of the following conditions at screening will not be eligible for admission into the study.
- Patients currently receiving anticancer therapies or who have received anticancer therapies within 30 days of the start of study drug (including chemotherapy, radiation therapy, antibody based therapy, etc.). Steroids for symptom palliation are allowed, but must be either discontinued or on stable doses at the time of initiation of protocol therapy.
- Patients may not be receiving any other investigational agents, or have received investigational agents within 4 weeks of beginning treatment.
- Patients who have previously received PGG-Betafectin (Betafectin®) or Imprime PGG.
- Patients, who have had a major surgery or significant traumatic injury within 4 weeks of start of study drug, patients who have not recovered from the side effects of any major surgery (defined as requiring general anesthesia) or patients that may require major surgery during the course of the study.
- Patients with known leptomeningeal or brain metastases. Imaging or spinal fluid analysis to exclude CNS involvement is not required, unless there is clinical suspicion by the treating investigator.
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- History of severe allergic or anaphylactic reactions to monoclonal antibody therapy or a known hypersensitivity to baker's yeast.
- Patients with known HIV infection or hepatitis B or C infection.HIV testing is not mandated and is to be performed at the discretion of the treating investigator.
- Patients with a systemic fungal, bacterial, viral, or other infection not controlled (defined as exhibiting ongoing signs/symptoms related to the infection and without improvement, despite appropriate antibiotics or other treatment).
- Prior history of another malignancy (except for non-melanoma skin cancer or in situ cervical or breast cancer) unless disease free for at least three years. Patients with prostate cancer are allowed if PSA is less than 1.
- Patients should not receive immunization with attenuated live vaccine within one week of study entry or during study period.
- Female patients who are pregnant or breast feeding, or adults of reproductive potential who are not using effective birth control methods. Women of child bearing potential (WOCBP) or male study participants of reproductive potential must agree to use double barrier birth control method of contraception during the course of the study treatment period and for 3 months after completing study treatment.
- -- WOCBP are defined as sexually mature women who have not undergone a hysterectomy or who are not postmenopausal (no menses) for at least 12 consecutive months. WOCBP must have a negative urine or serum pregnancy test within 7 days prior to administration of treatment.
- History of noncompliance to medical regimens.
- Patients who have any severe and/or uncontrolled medical conditions or other conditions that could affect their participation in the study such as:
- New York Heart Association Class III or IV cardiac disease, including pre-existing clinically significant arrhythmia, congestive heart failure, or cardiomyopathy
- unstable angina pectoris, symptomatic congestive heart failure, myocardial infarction within 6 months of start of study drug, serious uncontrolled cardiac arrhythmia or any other clinically significant cardiac disease
- Other uncontrolled intercurrent illness that would limit adherence to study requirements.
Trial locations and contacts
1 site in 1 country.
United States1 site
Dana Farber Cancer Institute
Boston, Massachusetts, 02115
About this study
This research study is evaluating a drug combination called Imprime PGG and Rituximab as a possible treatment for relapsed/refractory indolent B cell non-Hodgkin lymphomas (NHL).
Read the detailed description
After the screening procedures confirms eligibility:
Study Drugs: The participant will receive both Imprime PGG and rituximab weekly, for four weeks.
Clinical Exams: At the participant's weekly visit there will be have a physical exam and general health and specific questions about any problems they might be having and any medications the participant may be taking.
Scans (or Imaging tests):The Investigator will measure the participant's tumor 10 weeks after Week 4 of treatment by CT scan. Additional scans will be performed at 6 months and 12 months following the end of treatment.
- Being tested
- Imprime PGG, Rituximab
- Keywords
- relapsed/refractory indolent B cell non-Hodgkin lymphomas
- Medical subject headings
- Recurrence
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Imprime PGGDrug
RituximabDrug
Also called IDEC-102, IDEC-C2B8, Rituxan, Mabthera
| Study group | Role | What they receive |
|---|---|---|
| Imprime PGG and Rituximab | Experimental | The study drug, Imprime PGG, will be administered intravenously at a dose of 4mg/kg weekly for 4 weeks. Rituximab will be administered intravenously by institutional standards concurrently at a dose of 375mg/m2 weekly for 4 weeks. Response will be assessed with CT scans 10 weeks +/- 3 days following the completion of treatment Receives: Drug: Imprime PGG; Drug: Rituximab |
What is being measured
The primary outcome is the main question the study is designed to answer.
Overall Response Rate
Overall response rate is percentage of participants with complete (CR) and partial (PR) responses as best response during treatment.
CR:
- Nodal Masses:
- For FDG-avid or PET positive prior to therapy; mass of any size permitted if PET negative
- For variably FDG-avid or PET negative; regression to normal size on CT.
- Liver/Spleen:
No palpable nodules
-Bone Marrow Infiltrate cleared on repeat biopsy; if indeterminate by morphology, immunohistochemistry should be negative.
PR:
- Nodal Masses:
- 50% decrease in SPD of up to 6 largest dominant masses; no increase in size of other nodes.
- FDG-avid or PET positive prior to therapy; one or more PET positive at previously involved site.
- Variably FDG-avid or PET negative; regression on CT.
- Liver/Spleen:
- 50% decrease in SPD of nodules; no increase in size of liver or spleen.
- Bone Marrow:
Irrelevant if positive prior to therapy; cell type should be specified.
Measured: Response assessed at week 14 of study calendar (10 weeks after the 4-week treatment regimen).
Secondary outcomes (3)
Median Progression-free Survival (PFS)
Progression free survival (PFS) is defined as the time from start of treatment to disease progression or death from any cause as estimated by Kaplan Meier methods. Patients who have not progressed and are alive are censored at the date the patient is known to be progression-free. Response is measure using the International Harmonization Project for Lymphoma criteria Cheson 2007, using CT scans of the chest, abdomen, and pelvis.
Measured: Patients were followed for a median (range) of 13.6 months (3-25).
Duration of Response (DOR)
Duration of response DR is defined as the time from the date of first response (complete or partial) after treatment to the date of disease progression or death for any cause. Patients who are alive without progression are censored at the date the patient is last know to be progression-free.
Measured: Patients were followed for a median (range) of 13.6 months (3-25).
Imprime PGG-bound Neutrophils Status by Response
Imprime PGG-bound neutrophils analyzed using established methods (peripheral blood samples and post-treatment tumor samples to quantify the binding of Imprime PGG to neutrophils) by treatment response, best response.
Measured: Up to 14 weeks with a median (range of) 13 weeks (12-14).
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted13 Mar 2014 (estimated)
- Study startDec 2014
- Primary completion11 Jul 2019
- Study completion1 Feb 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Relapsed/Refractory Indolent B Cell Non-Hodgkin LymphomasStudies of the same condition, open and under way.
- More trials run by Dana-Farber Cancer InstituteThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 2
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 25 participants (actual)
Sponsor and investigators
- Lead sponsor
- Dana-Farber Cancer Institute
- Sponsor type
- University, hospital or other
- Collaborators
- HiberCell, Inc.
- Responsible party
- Principal investigator, Caron A. Jacobson, MD, Dana-Farber Cancer Institute
- Investigators
- Caron Jacobson, MD, Principal investigator, Dana-Farber Cancer Institute
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02086175
- Sponsor's protocol ID
- 13-398
- Status last verified
- Mar 2026
- First submitted
- 11 Mar 2014
- Last updated
- 6 Apr 2026
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- Individual data sharing
- Yes: The Dana-Farber / Harvard Cancer Center encourages and supports the responsible and ethical sharing of data from clinical trials. De-identified participant data from the final research dataset used in the published manuscript may only be shared under the terms of a Data Use Agreement. Requests may be directed to Sponsor Investigator or designee. The protocol and statistical analysis plan will be made available on Clinicaltrials.gov only as required by federal regulation or as a condition of awards and agreements supporting the research.
Study at a glance
From the registry record, last updated by the sponsor on 6 Apr 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 2 Clinical Trial of Rituxan and B-Glucan PGG in Relapsed Indolent Non-Hodgkin Lymphoma
- ClinicalTrials.gov ID
- NCT02086175
- Acronym / sponsor ID
- 13-398
- Keywords
- relapsed/refractory indolent B cell non-Hodgkin lymphomas
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 25 participants (actual)
- Lead sponsor
- Dana-Farber Cancer InstituteUniversity, hospital or other
- Collaborators
- HiberCell, Inc.
- Study start
- Dec 2014 (actual)
- Primary completion
- 11 Jul 2019 (actual)
- Study completion
- 1 Feb 2021 (actual)
- First posted
- 13 Mar 2014 (estimated)
- Results
- Posted 7 Jan 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This research study is evaluating a drug combination called Imprime PGG and Rituximab as a possible treatment for relapsed/refractory indolent B cell non-Hodgkin lymphomas (NHL).
Detailed description
After the screening procedures confirms eligibility:
Study Drugs: The participant will receive both Imprime PGG and rituximab weekly, for four weeks.
Clinical Exams: At the participant's weekly visit there will be have a physical exam and general health and specific questions about any problems they might be having and any medications the participant may be taking.
Scans (or Imaging tests):The Investigator will measure the participant's tumor 10 weeks after Week 4 of treatment by CT scan. Additional scans will be performed at 6 months and 12 months following the end of treatment.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Imprime PGG and Rituximab | Experimental | Drug: Imprime PGG, Drug: RituximabThe study drug, Imprime PGG, will be administered intravenously at a dose of 4mg/kg weekly for 4 weeks. Rituximab will be administered intravenously by institutional standards concurrently at a dose of 375mg/m2 weekly for 4 weeks. Response will be assessed with CT scans 10 weeks +/- 3 days following the completion of treatment |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (18 listed)
- Participants must meet the following criteria on screening examination to be eligible to participate in the study:
- Patients must have histologically determined indolent NHL that is relapsed or primary refractory after initial therapy. Indolent NHL includes the morphologic and clinical variants:
- Between 1-3 prior lines of chemoimmunotherapy and/or monotherapy with rituximab. Patients may not have had prior autologous or allogeneic stem cell transplantation.
- Measurable disease that has not been previously irradiated on CT scans of at least 2 cm, OR if the patient has had previous radiation to the marker lesion(s), there must be evidence of progression since the radiation. Imaging must be completed no greater than 4 weeks prior to study enrollment.
- ECOG performance status 0-2 (Appendix B, Section 17.2)
Key exclusion criteria (18 listed)
- Participants who exhibit any of the following conditions at screening will not be eligible for admission into the study.
- Patients currently receiving anticancer therapies or who have received anticancer therapies within 30 days of the start of study drug (including chemotherapy, radiation therapy, antibody based therapy, etc.). Steroids for symptom palliation are allowed, but must be either discontinued or on stable doses at the time of initiation of protocol therapy.
- Patients may not be receiving any other investigational agents, or have received investigational agents within 4 weeks of beginning treatment.
- Patients who have previously received PGG-Betafectin (Betafectin®) or Imprime PGG.
- Patients, who have had a major surgery or significant traumatic injury within 4 weeks of start of study drug, patients who have not recovered from the side effects of any major surgery (defined as requiring general anesthesia) or patients that may require major surgery during the course of the study.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Imprime PGG | Drug | Imprime PGG and Rituximab |
| RituximabAlso: IDEC-102, IDEC-C2B8, Rituxan, Mabthera | Drug | Imprime PGG and Rituximab |
Primary outcome
Overall Response Rate
Time frame: Response assessed at week 14 of study calendar (10 weeks after the 4-week treatment regimen).
Overall response rate is percentage of participants with complete (CR) and partial (PR) responses as best response during treatment. CR: * Nodal Masses: 1. For FDG-avid or PET positive prior to therapy; mass of any size permitted if PET negative 2. For variably FDG-avid or PET negative; regression to normal size on CT. * Liver/Spleen: No palpable nodules -Bone Marrow Infiltrate cleared on repeat biopsy; if indeterminate by morphology, immunohistochemistry should be negative. PR: * Nodal Masses: * 50% decrease in SPD of up to 6 largest dominant masses; no increase in size of other nodes. 1. FDG-avid or PET positive prior to therapy; one or more PET positive at previously involved site. 2. Variably FDG-avid or PET negative; regression on CT. * Liver/Spleen: * 50% decrease in SPD of nodules; no increase in size of liver or spleen. * Bone Marrow: Irrelevant if positive prior to therapy; cell type should be specified.
3 secondary outcomes
Median Progression-free Survival (PFS)
Time frame: Patients were followed for a median (range) of 13.6 months (3-25).
Duration of Response (DOR)
Time frame: Patients were followed for a median (range) of 13.6 months (3-25).
Imprime PGG-bound Neutrophils Status by Response
Time frame: Up to 14 weeks with a median (range of) 13 weeks (12-14).
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Apr 2026.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Individual participant dataSharing planned: Yes. The Dana-Farber / Harvard Cancer Center encourages and supports the responsible and ethical sharing of data from clinical trials. De-identified participant data from the final research dataset used in the published manuscript may only be shared under the terms of a Data Use Agreement. Requests may be directed to Sponsor Investigator or designee. The protocol and statistical analysis plan will be made available on Clinicaltrials.gov only as required by federal regulation or as a condition of awards and agreements supporting the research.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Caron Jacobson, MD principal investigator
Dana-Farber Cancer Institute
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Imprime PGG and Rituximab in people with Relapsed/Refractory Indolent B Cell Non-Hodgkin Lymphomas, run by Dana-Farber Cancer Institute at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 18 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 6 Apr 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 7 Jan 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Overall Response Rate (time frame: Response assessed at week 14 of study calendar (10 weeks after the 4-week treatment regimen).). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 6 Apr 2026; AzTrials last refreshed its copy on 7 Nov 2026.