Study of GS-0189 (Formerly FSI-189) as Monotherapy and in Combination With Rituximab in Participants With Relapsed/Refractory Non-Hodgkin Lymphoma
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ClinicalTrials.gov Identifier: NCT04502706 |
Recruitment Status :
Terminated
(Sponsor's decision to discontinue development of this molecule)
First Posted : August 6, 2020
Last Update Posted : May 20, 2022
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Condition or disease | Intervention/treatment | Phase |
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Non-hodgkin Lymphoma | Drug: GS-0189 Drug: Rituximab | Phase 1 |
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 9 participants |
Allocation: | Non-Randomized |
Intervention Model: | Sequential Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | A Phase 1 Study of GS-0189 (Formerly FSI-189) as Monotherapy and in Combination With Rituximab in Patients With Relapsed/Refractory Non-Hodgkin Lymphoma |
Actual Study Start Date : | November 17, 2020 |
Actual Primary Completion Date : | March 31, 2022 |
Actual Study Completion Date : | March 31, 2022 |

Arm | Intervention/treatment |
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Experimental: GS-0189 (Monotherapy Dose Escalation, MDE)
Relapsed/refractory (R/R) non-Hodgkin lymphoma (NHL) participants will receive GS-0189 doses of 10, 30, or 100 mg every 2 weeks.
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Drug: GS-0189
GS-0189 will be administered intravenously.
Other Name: FSI-189 |
Experimental: GS-0189 + Rituximab (Combination Dose Escalation, CDE)
R/R NHL participants will receive GS-0189 doses of 100, 300, 1000, 2000, and 3000 mg in combination with rituximab at 375 mg/m^2.
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Drug: GS-0189
GS-0189 will be administered intravenously.
Other Name: FSI-189 Drug: Rituximab Rituximab will be administered intravenously. |
Experimental: GS-0189 + Rituximab (Pharmacokinetic (PK) Evaluation)
R/R NHL participants will receive GS-0189 dose of up to 30 mg followed by the highest designated safe dose from the Combination Dose Escalation cohort (CDE) in combination with rituximab at 375 mg/m^2.
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Drug: GS-0189
GS-0189 will be administered intravenously.
Other Name: FSI-189 Drug: Rituximab Rituximab will be administered intravenously. |
Experimental: GS-0189 + Rituximab (Alternate Schedule Evaluation, ASE)
R/R NHL participants will receive GS-0189 every 4 weeks in combination with rituximab 375 mg/m^2. The GS-0189 dose will be determined based on the totality of safety, PK, and pharmacodynamic (PD) data from the preceding cohorts.
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Drug: GS-0189
GS-0189 will be administered intravenously.
Other Name: FSI-189 Drug: Rituximab Rituximab will be administered intravenously. |
Experimental: GS-0189 + Rituximab (DLBCL Expansion)
Diffuse large B-cell lymphoma (DLBCL) participants will receive GS-0189 in combination with rituximab 375 mg/m^2. The GS-0189 dose will be determined based on the totality of safety, PK, and PD data from the preceding cohorts.
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Drug: GS-0189
GS-0189 will be administered intravenously.
Other Name: FSI-189 Drug: Rituximab Rituximab will be administered intravenously. |
- Percentage of Participants Experiencing Treatment-Emergent Adverse Events [ Time Frame: Up to 11 months ]Adverse events as defined by National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), Version 5.0
- Percentage of Participants Experiencing Laboratory Abnormalities [ Time Frame: Up to 11 months ]
- Pharmacokinetic (PK) Parameter: AUClast of GS-0189 [ Time Frame: Up to 11 months ]AUClast is defined as the concentration of drug from time zero to the last observable concentration.
- PK Parameter: AUCtau of GS-0189 [ Time Frame: Up to 11 months ]AUCtau is defined as concentration of drug over time (the area under the concentration verses time curve over the dosing interval).
- PK Parameter: Cmax of GS-0189 [ Time Frame: Up to 11 months ]Cmax is defined as the maximum observed concentration of drug.
- PK Parameter: Accumulation Ratio (AR) of GS-0189 [ Time Frame: Up to 11 months ]AR is defined as ratio based on Cmax and AUCtau after first dose and after multiple doses.
- PK Parameter: Tmax of GS-0189 [ Time Frame: Up to 11 months ]Tmax is defined as the time (observed time point) of Cmax.
- PK Parameter: AUC0-tau/D Dose-normalized AUCtau of GS-0189 [ Time Frame: Up to 11 months ]AUC0-tau/D is defined dose normalized area under the concentration-time curve from time zero (pre dose time point of the infusion) to the end of the dosing interval.
- Percentage of Signal Regulatory Protein Alpha (SIRPα) Receptor Occupancy in the Blood [ Time Frame: Up to 11 months ]
- Serum Concentration of GS-0189 [ Time Frame: Up to 11 months ]
- Rate of Anti-GS-0189 Antibody Positivity [ Time Frame: Up to 11 months ]
- Objective response rate (ORR) [ Time Frame: Up to 2 years ]ORR is defined as the proportion of participants who achieve a complete response (CR) or partial response (PR) as assessed by Lugano Classification response criteria for lymphomas.
- Duration of Response (DOR) [ Time Frame: Up to 2 years ]DOR is defined as the interval from the first documentation of CR or PR to the earlier of the first documentation of disease progression.
- Progression-free Survival (PFS) [ Time Frame: Up to 2 years ]PFS is defined as the interval from the first dose date of drug to the earlier of the first documentation of definitive disease progression or death from any cause.
- Overall Survival (OS) [ Time Frame: Up to 2 years ]OS is defined as the interval from the first dose date of drug to death from any cause.
- Time to Progression (TTP) [ Time Frame: Up to 2 years ]TTP is defined as the interval from the first dose date of drug to the earlier of the first documentation of definitive disease progression.

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
- DLBCL, follicular lymphoma (FL), mantle cell lymphoma (MCL), or marginal zone lymphoma (MZL) relapsed/refractory (R/R) to at least 2 prior lines of therapy. Prior autologous hematopoietic cell transplantation and individuals with transformed lymphomas are permitted. Individuals must be at least 3 months out from prior autologous hematopoietic cell transplantation. Individuals with indolent lymphomas must be candidates for systemic treatment in the judgment of the treating physician.
- In the DLBCL Expansion part: DLBCL that is relapsed or refractory to at least 2 prior lines of therapy. Prior autologous hematopoietic cell transplantation and individuals with transformed lymphomas are permitted.
- Eastern Cooperative Oncology Group (ECOG) score of 0 to 2.
- For the DLBCL expansion cohort, disease must be measurable for response per Lugano criteria. For all other cohorts, disease must be measurable or assessable for response per Lugano criteria.
- Exhibit acceptable hematopoietic, liver, renal, and coagulation function as assessed by laboratory tests.
Key Exclusion Criteria:
- Individuals with active brain metastases (Individuals with stable treated central nervous system (CNS) lesions who are off corticosteroid therapy for at least 3 weeks are not considered active.
- Individuals with Burkitt's lymphoma.
- Prior treatment with a chimeric antigen receptor (CAR) T-cell therapy ≤ 90 days from first dose of study drug.
- Prior allogeneic stem cell transplant.
- Previous anticancer therapy including chemotherapy, hormonal therapy, and investigational agents within 3 weeks or at least 4 half-lives (up to a maximum of 4 weeks), whichever is longer, prior to first dose of study drug.
- Known active or chronic hepatitis B or C infection or human immunodeficiency virus.
- Prior treatment with CD47 or signal regulatory protein alpha (SIRPα)-targeting agents.
- Hypersensitivity to the active substance, to murine proteins, or to any of the other excipients of rituximab
- Significant medical diseases or conditions, as assessed by the Investigator and Sponsor, that would substantially increase the risk:benefit ratio of participating in the study.
- Rituximab-containing cohorts only: Receipt of live/attenuated vaccines within 30 days of rituximab dosing
- Has persisting toxicity related to prior therapy of Grade > 1 in severity per National Cancer Institute Common Terminology Criteria for Adverse Events (NCI CTCAE), Version 5.0.
Note: Other protocol defined Inclusion/Exclusion criteria may apply.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT04502706
United States, Alabama | |
University of Alabama Comprehensive Cancer Center | |
Birmingham, Alabama, United States, 35233 | |
United States, California | |
City of Hope | |
Duarte, California, United States, 91010 | |
United States, Florida | |
Florida Cancer Specialists | |
Sarasota, Florida, United States, 34232 | |
United States, Missouri | |
Washington University School of Medicine | |
Saint Louis, Missouri, United States, 63110 | |
United States, Oklahoma | |
University of Oklahoma Health Sciences Center | |
Oklahoma City, Oklahoma, United States, 73104 |
Study Director: | Gilead Study Director | Gilead Sciences |
Responsible Party: | Gilead Sciences |
ClinicalTrials.gov Identifier: | NCT04502706 |
Other Study ID Numbers: |
SRP001 |
First Posted: | August 6, 2020 Key Record Dates |
Last Update Posted: | May 20, 2022 |
Last Verified: | May 2022 |
Individual Participant Data (IPD) Sharing Statement: | |
Plan to Share IPD: | No |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Lymphoma Lymphoma, Non-Hodgkin Neoplasms by Histologic Type Neoplasms Lymphoproliferative Disorders Lymphatic Diseases Immunoproliferative Disorders |
Immune System Diseases Rituximab Antineoplastic Agents, Immunological Antineoplastic Agents Immunologic Factors Physiological Effects of Drugs Antirheumatic Agents |