A Phase 2 interventional study of Bendamustine Hydrochloride and Biopsy Procedure in Grade 1 Follicular Lymphoma, Grade 2 Follicular Lymphoma and Grade 3a Follicular Lymphoma, sponsored by National Cancer Institute (NCI). Active, not recruiting at 429 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-07-08.
Sponsored by National Cancer Institute (NCI) · Phase 2, Interventional, and Treatment
This phase II trial studies how well obinutuzumab with or without umbralisib, lenalidomide, or combination chemotherapy work in treating patients with grade I-IIIa follicular lymphoma that has come back (relapsed) or does not respond to treatment (refractory). Immunotherapy with obinutuzumab, may induce changes in body's immune system and may interfere with the ability of tumor cells to grow and spread. Umbralisib may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth. Biological therapies, such as lenalidomide, use substances made from living organisms that may stimulate or suppress the immune system in different ways and stop cancer cells from growing. Chemotherapy drugs, such as cyclophosphamide, doxorubicin, vincristine, prednisone, and bendamustine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. It is not yet known whether giving obinutuzumab with or without umbralisib, lenalidomide, or combination chemotherapy will work better in treating patients with grade I-IIIa follicular lymphoma.
PRIMARY OBJECTIVE:
I. To compare the complete response rate up to 6 cycles after randomization as defined by centrally read positron emission tomography (PET)/computed tomography (CT) (integral biomarker) of 2 targeted therapeutic regimens (obinutuzumab + umbralisib [TGR-1202] or obinutuzumab + lenalidomide) with obinutuzumab + chemotherapy (cyclophosphamide, doxorubicin hydrochloride [doxorubicin], vincristine sulfate [vincristine], and prednisone [CHOP] or bendamustine hydrochloride [bendamustine]) in patients with early relapsing or refractory follicular lymphoma.
SECONDARY OBJECTIVES:
I. To validate the prognostic association of the m7-FLIPI model, demonstrating that the population of follicular lymphoma patients who respond poorly to chemoimmunotherapy are enriched for having a high-risk m7-FLIPI score, and that the score is associated with progression-free survival (integrated biomarker). (Primary translational medicine) II. To estimate the 30-month sustained complete response rate (CR30) defined by centrally read PET/CT with each of the regimens in this early relapsing or refractory follicular lymphoma population.
III. To estimate best response up to 12 cycles of therapy, progression free survival, duration of response and overall survival with each of the combinations in early relapsing or refractory follicular lymphoma.
IV. To evaluate the adverse effects of each of the regimens in early relapsing or refractory follicular lymphoma.
V. To evaluate the predictive performance of non-invasive genotyping (m7-FLIPI in circulating tumor deoxyribonucleic acid [DNA]) of plasma at study entry relative to standard tumor genotyping (m7-FLIPI) of formalin-fixed paraffin-embedded tumor tissue.
VI. To evaluate the association between the detection of active lymphoma by PET-CT and the detection of circulating tumor DNA in plasma at baseline, after 6 and 12 cycles, and at 30 months after initiation of study therapy.
OUTLINE: Patients are randomized to 1 of 3 arms.
ARM I (CLOSED TO ACCRUAL): Patients receive obinutuzumab intravenously (IV) on day 1 and umbralisib orally (PO) daily on days 1-28. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity.
ARM II: Patients receive obinutuzumab IV on day 1 and lenalidomide PO on days 1-21. Treatment repeats every 28 days for up 12 cycles in the absence of disease progression or unacceptable toxicity.
ARM III:
PRIOR BENDAMUSTINE-BASED CHEMOTHERAPY: Patients receive obinutuzumab IV on day 1, cyclophosphamide IV on day 1, doxorubicin IV on day 1, vincristine IV on day 1, and prednisone PO on days 1-5. Treatment with obinutuzumab repeats every 21 or 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Treatment with combination chemotherapy repeats every 21 days for 6 cycles in the absence of disease progression or unacceptable toxicity.
PRIOR CHOP CHEMOTHERAPY: Patients receive obinutuzumab IV on day 1 and bendamustine IV over 60 minutes on days 1 and 2. Treatment repeats every 28 days for up to 6 or 12 cycles (bendamustine and obinutuzumab, respectively) in the absence of disease progression or unacceptable toxicity.
Patients in all arms undergo biopsy and echocardiogram (ECHO) or multigated acquisition scan (MUGA) during screening, and PET/CT scans and collection of blood throughout the trial.
After completion of study treatment, patients are followed up every 3 months for 2 years and then every 6 months for 3 years.
The intent is to enroll patients with follicular lymphoma (FL) relapsed within 2 years of completing their first course of chemotherapy (CHOP or bendamustine based therapy) + anti-CD20 therapy. Patient is still eligible if he/she received radiation therapy or anti-CD20 therapy prior to chemoimmunotherapy or if maintenance anti-CD20 therapy was administered after chemoimmunotherapy
Involved field or involved site radiation is not considered a line of therapy; examples of eligible prior treatment regimens (note this list is not all inclusive):
Patients with hepatitis B virus infection must have undetectable hepatitis B virus (HBV) on suppressive therapy and no evidence of HBV-related hepatic damage; patients with hepatitis C virus infection are eligible if complete eradication therapy has been successfully completed, and there is no detectable hepatitis C virus (HVC) or related hepatic damage; patients with known human immunodeficiency virus (HIV) infection are eligible if they meet all of the following criteria in addition to the other protocol eligibility criteria:
Exclusion Criteria:
CLOSED TO ACCRUAL: Patients receive obinutuzumab IV on day 1 and umbralisib PO daily on days 1-28. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo biopsy and ECHO or MUGA during screening, and PET/CT scans and collection of blood throughout the trial.
Procedure: Biopsy Procedure · Procedure: Biospecimen Collection · Procedure: Computed Tomography · Procedure: Echocardiography Test · Procedure: Multigated Acquisition Scan · Biological: Obinutuzumab · Procedure: Positron Emission Tomography · Drug: Umbralisib
Patients receive obinutuzumab IV on day 1 and lenalidomide PO on days 1-21. Treatment repeats every 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Patients undergo biopsy and ECHO or MUGA during screening, and PET/CT scans and collection of blood throughout the trial.
Procedure: Biopsy Procedure · Procedure: Biospecimen Collection · Procedure: Computed Tomography · Procedure: Echocardiography Test · Drug: Lenalidomide · Procedure: Multigated Acquisition Scan · Biological: Obinutuzumab · Procedure: Positron Emission Tomography
PRIOR BENDAMUSTINE-BASED CHEMOTHERAPY: Patients receive obinutuzumab IV on day 1, cyclophosphamide IV on day 1, doxorubicin IV on day 1, vincristine IV on day 1, and prednisone PO on days 1-5. Treatment with obinutuzumab repeats every 21 or 28 days for up to 12 cycles in the absence of disease progression or unacceptable toxicity. Treatment with combination chemotherapy repeats every 21 days for up to 6 cycles in the absence of disease progression or unacceptable toxicity. PRIOR CHOP CHEMOTHERAPY: Patients receive obinutuzumab IV on day 1, and bendamustine IV over 1 hour on days 1 and 2. Treatment repeats every 28 days for up to 6 or 12 cycles (bendamustine and obinutuzumab, respectively) in the absence of disease progression or unacceptable toxicity. Patients undergo biopsy and ECHO or MUGA during screening, and PET/CT scans and collection of blood throughout the trial.
Drug: Bendamustine Hydrochloride · Procedure: Biopsy Procedure · Procedure: Biospecimen Collection · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Doxorubicin Hydrochloride · Procedure: Echocardiography Test · Procedure: Multigated Acquisition Scan · Biological: Obinutuzumab · Procedure: Positron Emission Tomography · Drug: Prednisone · Drug: Vincristine Sulfate
Given IV
Also known as: Belrapzo, Bendamustin Hydrochloride, Bendeka, CEP 18083, CEP-18083, CEP18083, Cytostasan Hydrochloride, Levact, Ribomustin, SyB L-0501, Treakisym, Treanda, VIVIMUSTA
Undergo biopsy
Also known as: Biopsy, BIOPSY_TYPE, Bx
Undergo collection of blood
Also known as: Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection
Undergo PET/CT scans
Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography
Given IV
Also known as: (-)-Cyclophosphamide, 2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrate, Asta B 518, B 518, B-518, B518, Carloxan, Ciclofosfamida, Ciclofosfamide, Cicloxal, Clafen, Claphene, CP monohydrate, CTX, CYCLO-cell, Cycloblastin, Cycloblastine, Cyclophospham, Cyclophosphamid monohydrate, Cyclophosphamide Monohydrate, Cyclophosphamidum, Cyclophosphan, Cyclophosphane, Cyclophosphanum, Cyclostin, Cyclostine, Cytophosphan, Cytophosphane, Cytoxan, Fosfaseron, Frindovyx, Genoxal, Genuxal, Ledoxina, Mitoxan, Neosar, Revimmune, Syklofosfamid, WR 138719, WR- 138719, WR-138719, WR138719
Given IV
Also known as: 5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-alpha-L-lyxo-hexopyranosyl)oxy]-7,8, 9,10-tetrahydro-6,8,11-trihydroxy-8-(hydroxyacetyl)-1-methoxy-, hydrochloride, (8S-cis)- (9CI), ADM, Adriacin, Adriamycin, Adriamycin Hydrochloride, Adriamycin PFS, Adriamycin RDF, ADRIAMYCIN, HYDROCHLORIDE, Adriamycine, Adriblastina, Adriblastine, Adrimedac, Chloridrato de Doxorrubicina, DOX, DOXO-CELL, Doxolem, Doxorubicin HCl, Doxorubicin.HCl, Doxorubin, Farmiblastina, FI 106, FI-106, FI106, hydroxydaunorubicin, Rubex
Undergo ECHO
Also known as: EC, Echocardiography
Given PO
Also known as: CC 5013, CC-5013, CC5013, CDC 501, Revlimid
Undergo MUGA
Also known as: Blood Pool Scan, Equilibrium Radionuclide Angiography, Gated Blood Pool Imaging, Gated Heart Pool Scan, MUGA, MUGA Scan, Multi-Gated Acquisition Scan, Radionuclide Ventriculogram Scan, Radionuclide Ventriculography, RNV Scan, RNVG, SYMA Scanning, Synchronized Multigated Acquisition Scanning
Given IV
Also known as: Anti-CD20 Monoclonal Antibody R7159, GA 101, GA-101, GA101, Gazyva, huMAB(CD20), R 7159, R-7159, R7159, RO 5072759, RO-5072759, RO5072759
Undergo PET/CT scans
Also known as: Medical Imaging, Positron Emission Tomography, PET, PET Scan, Positron emission tomography (procedure), Positron Emission Tomography Scan, Positron-Emission Tomography, PT
Given PO
Also known as: .delta.1-Cortisone, 1, 2-Dehydrocortisone, Adasone, Cortancyl, Dacortin, DeCortin, Decortisyl, Decorton, Delta 1-Cortisone, Delta-Dome, Deltacortene, Deltacortisone, Deltadehydrocortisone, Deltasone, Deltison, Deltra, Econosone, Lisacort, Meprosona-F, Metacortandracin, Meticorten, Ofisolona, Orasone, Panafcort, Panasol-S, Paracort, Perrigo Prednisone, PRED, Predicor, Predicorten, Prednicen-M, Prednicort, Prednidib, Prednilonga, Predniment, Prednisone Intensol, Prednisonum, Prednitone, Promifen, Rayos, Servisone, SK-Prednisone
Given PO
Also known as: 2-((1S)-1-(4-Amino-3-(3-fluoro-4-(1-methylethoxy)phenyl)-1H-pyrazolo(3,4-d)pyrimidin-1-yl)ethyl)-6-fluoro-3-(3-fluorophenyl)-4H-1-benzopyran-4-one, RP-5264, RP5264, TGR 1202, TGR-1202, TGR1202
Given IV
Also known as: Kyocristine, Leurocristine Sulfate, Leurocristine, sulfate, Oncovin, Vincasar, Vincosid, Vincrex, Vincristine, sulfate
Complete response (CR)
Time frame: Up to 6 cycles
Sustained complete response rate (CR30)
Defined by centrally read positron emission tomography (PET)/computed tomography (CT).
Time frame: Up to 30 months
Progression-free survival (PFS)
Will be calculated using the method of Kaplan-Meier. 95% confidence for the survival estimates will be constructed using the method of Brookmeyer-Crowley. With 31 eligible patients in each arm, progression free survival at a particular time point, and the 30-month sustained response rate can be estimated to within at least +/- 18% with 95% confidence.
Time frame: From date of registration to date of first observation of progressive disease, or death due to any cause, assessed up to 5 years
Duration of response (CR, partial response [PR])
Will be calculated using the method of Kaplan-Meier.
Time frame: From date of first documentation of response to treatment (CR, PR) to date of first documentation of progression, or death due to any cause, assessed up to 5 years
Overall survival (OS)
Will be calculated using the method of Kaplan-Meier. 95% confidence for the survival estimates will be constructed using the method of Brookmeyer-Crowley. With 31 eligible patients in each arm, OS at a particular time point, and the 30-month sustained response rate can be estimated to within at least +/- 18% with 95% confidence.
Time frame: Up to 5 years
Incidence of adverse events
Assessed by National Cancer Institute Common Terminology Criteria for Adverse Events (CTCAE) version 4.0 (version 5.0 will be utilized for serious adverse events reporting only). Toxicity rates can be estimated to within at least +/- 18% with 95% confidence.
Time frame: Up to 5 years
Non-invasive genotyping and circulating tumor deoxyribonucleic acid (DNA) assessment
Sensitivity, specificity, positive predictive value, negative predictive value, and kappa coefficient will be used to evaluate the concordance. Will evaluate the association of detection of active lymphoma by positron emission tomography-computed tomography and the detection of circulating tumor DNA in plasma at baseline, after 6 and 12 cycles, and at 30 months after initiation of study therapy. Chi-square test will be used to evaluate the association and odds ratio will be calculated
Time frame: Up to 5 years
Active lymphoma and circulating tumor DNA in plasma
The Cox proportional hazards model will be used to assess the association and odds ratio will be calculated.
Time frame: From baseline up to 30 months after initiation of treatment
m7-FLIPI model validation
The Cox proportional hazards model will be used to assess the association of the m7-FLIPI with to PFS.
Time frame: Up to 5 years
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