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A Phase 1 Trial of CD25/Treg-depleted DLI Plus Ipilimumab for Myeloid Disease Relapse After Matched-HCT

A Phase 1 Trial of CD25/Treg-depleted DLI Plus Ipilimumab for Myeloid Disease Relapse After Matched-HCT

Status
Active, not recruiting
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03912064
Enrollment
25
Registered
2019-04-11
Start date
2019-07-10
Completion date
2026-12-31
Last updated
2026-01-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Acute Myeloid Leukemia, Chronic Myelomonocytic Leukemia, Myelodysplastic Syndromes, Myelofibrosis, Myeloproliferative Neoplasms

Keywords

Myelofibrosis, Chronic Myelomonocytic Leukemia, Myeloproliferative Neoplasms, Myelodysplastic Syndromes, Acute Myeloid Leukemia

Brief summary

In this research study, our main goal for the ipilimumab portion of the study is to determine the highest dose of ipilimumab that can be given safely in several courses and to determine what side effects are seen in patients with Acute Myeloid Leukemia (AML), Myelodysplastic Syndromes (MDS), Myeloproliferative Neoplasms (MPN), Chronic Myelomonocytic Leukemia (CMML), or Myelofibrosis (MF).

Detailed description

This research study is a Phase I clinical trial, which tests the safety of an investigational intervention and also tries to define the appropriate dose of the investigational intervention to use for further studies. Investigational means that the intervention is being studied. The U.S. Food and Drug Administration (FDA) has not approved ipilimumab for this specific disease but it has been approved for other uses. This drug has been used in other research studies and is now FDA-approved for the treatment of melanoma. Many people have also received ipilimumab on research studies for possible treatment of prostate cancer, lymphoma, kidney cancer, ovarian cancer and HIV infection. Information from those other research studies suggests that ipilimumab may help to treat the participant's cancer. Ipilimumab is an antibody that acts against CTLA-4. An antibody is a common type of protein produced by the body that the immune system (a system that defends the body against potentially harmful particles) uses to find and destroy foreign molecules (particles not typically found in the body) such as bacteria and viruses.

Interventions

DRUGIpilimumab

Ipilimumab is an antibody that acts against CTLA-4

BIOLOGICALCD25hi Treg depleted DLI

Donor lymphocyte product

Sponsors

National Cancer Institute (NCI)
CollaboratorNIH
Dana-Farber Cancer Institute
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Histologically or cytologically confirmed relapse of AML, MDS or MPN (CMML or myelofibrosis or MDS/MPN with ≥5% blasts in the marrow). * Relapse at ≥2 months after any 8/8 or better HLA-matched HCT * Available original stem cell donor. * Age ≥18 years. Because no dosing or adverse event data are currently available on the use of Ipilimumab in participants \<18 years of age, children are excluded from this study. * ECOG performance status ≤2 (Karnofsky performance status ≥60, see Appendix A). * Recipient donor T cell chimerism ≥20% within 4 weeks prior to cell infusion. * \<50% bone marrow involvement within 4 weeks prior to cell infusion. * No systemic corticosteroid therapy for GVHD (≤5 mg of prednisone or equivalent doses of other systemic steroids for non-GVHD, non-autoimmune indications for at least 4 weeks prior to cell infusion). * No other systemic medications/treatments (e.g. ECP) for GVHD for at least 4 weeks prior to cell infusion. * Ability to understand and willingness to sign written informed consents. * Adequate organ function as defined below: * Total bilirubin: ≤1.5 x institutional upper limit of normal (ULN) (except Gilbert's or disease-related hemolysis, then \< 3 x ULN) * AST(SGOT)/ALT(SGPT): ≤3 x institutional ULN * creatinine clearance: ≤1.5 x institutional ULN * O2 saturation: ≥90% on room air * LVEF \>40% * The effects of CD25/Treg-depleted DLI and Ipilimumab on the developing human fetus are unknown. For this reason and because immunomodulatory agents are known to be teratogenic, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation. Should a woman become pregnant or suspect she is pregnant while participating in this study or within 23 weeks after the last dose of study drug, she should inform her treating physician immediately. Men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and for at least 31 weeks after completion of Ipilimumab administration. * Negative pregnancy test for females of childbearing potential only

Exclusion criteria

* Extramedullary relapse involving immuno-privileged sites (e.g. CNS, testes, eyes). Other sites of extramedullary relapse (e.g. leukemia cutis, granulocytic sarcoma) are acceptable. * Participants who have had anti-tumor chemotherapy or other investigational agents within 4 weeks prior to cell infusion (6 weeks for nitrosoureas or mitomycin C), or immunotherapy within 8 weeks prior, or those who have not recovered from adverse events due to agents administered more than 4 weeks prior. Use of hydroxyurea to control counts within 4 weeks prior to cell infusion is permitted. * Prior history of DLI * Prior history of treatment with anti-CTLA-4 or anti-PD-1 pathway therapy, or CD137 agonist therapy. * Prior history of severe (grade 3 or 4) acute GVHD, or ongoing active GVHD requiring systemic treatment. * Organ transplant (allograft) recipient. * History of allergic reactions attributed to compounds of similar chemical or biologic composition to Ipilimumab or other agents used in study. * Autoimmune disease: Patients with a history of inflammatory bowel disease, including ulcerative colitis and Crohn's Disease, are excluded from this study, as are patients with a history of symptomatic disease (e.g., rheumatoid arthritis, systemic progressive sclerosis \[scleroderma\], systemic lupus erythematosus, autoimmune vasculitis \[e.g., Wegener's Granulomatosis\]) and motor neuropathy considered of autoimmune origin (e.g. Guillain-Barre Syndrome and Myasthenia Gravis). Patients with Hashimoto's thyroiditis are eligible to go on study. * Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements. * Pregnant women are excluded from this study because of the unknown teratogenic risk. Because there is an unknown but potential risk for adverse events in nursing infants secondary to treatment of the mother, breastfeeding should be discontinued if the mother is treated on this study. * HIV-positive participants on combination antiretroviral therapy are ineligible because of the potential for pharmacokinetic interactions with agents used in this study. In addition, these participants are at increased risk of lethal infections when treated with marrow- suppressive therapy. Appropriate studies will be undertaken in participants receiving combination antiretroviral therapy when indicated. * Individuals with active uncontrolled hepatitis B or C are ineligible as they are at high risk of lethal treatment-related hepatotoxicity after HCT.

Design outcomes

Primary

MeasureTime frameDescription
Maximum Tolerated Dose (MTD) for DLIDay 43 (6 weeks)The primary objective of this study is to determine the safety (MTD) of CD25/Treg-depleted donor lymphocyte infusion (DLI) plus Ipilimumab in patients with myeloid relapse after matched-HCT. Participants will be evaluated for dose limiting toxicities (DLTs) at day 43. DLTs explained within section 5.4 of the protocol.
Maximum Tolerated Dose (MTD) for IpilimumabDay 43 (6 weeks)The primary objective of this study is to determine the safety (MTD) of CD25/Treg-depleted donor lymphocyte infusion (DLI) plus Ipilimumab in patients with myeloid relapse after matched-HCT. Participants will be evaluated for dose limiting toxicities (DLTs) at day 43. DLTs explained within section 5.4 of the protocol.

Secondary

MeasureTime frameDescription
Overall SurvivalDay 92 and Week 60Duration of time from start of treatment to time of death.
Incidence of Acute GVHD RatesDay 92Incidence of aGVHD will be measured at the below time point, and grading severity of aGVHD will be standardized using the chart and information in Appendix C.
Response Rate as Determined by Complete Remission (CR) and CR With Incomplete Count Recovery (CRi)Day 43 (6 weeks)Complete remission will be evaluated for each disease, along with duration of complete remission. AML morphological complete remission can be found in Appendix E (E.1.1.), and Relapse from CR/CRi is in E.1.3. MDS/MPN complete remission criteria is found in Appendix F (F.1.1), and criteria for relapse is found in F.1.5.
Severity of Acute GVHD RatesDay 92Severity of aGVHD will be measured at the below time point, and grading severity of aGVHD will be standardized using the chart and information in Appendix C per Harris et al, 2016 GVHD Target Organ Staging, where 0 is no GVHD and 4 is severe. For the data table below: Grade I-IV reports any incidence of aGVHD, Grade II-IV reports the number of subjects who developed grade II, III, and IV aGVHD and Grade III-IV reports the number of subjects who developed Grade III and IV aGHVD. Grade 0: No stage 1-4 of any organ. Grade I: Stage 1-2 skin without liver, upper GI, or lower GI involvement. Grade II: Stage 3 rash and/or stage 1 liver and/or stage 1 upper GI and/or stage 1 lower GI. Grade III: Stage 2-3 liver and/or stage 2-3 lower GI, with stage 0-3 skin and/or stage 0-1 upper GI. Grade IV: Stage 4 skin, liver, or lower GI involvement, with stage 0-1 upper GI.
Severity of Chronic GVHD RatesDay 92Provider will assess study subject for severity of cGVHD per 2014 NIH consensus criteria at day 92.
Incidence of Chronic GVHD RatesDay 92Provider will assess study subject for severity of cGVHD per 2014 NIH consensus criteria at day 92.
Progression Free SurvivalDay 92 and Week 60Duration of time from start of treatment to time of objective disease progression or death, whichever comes first. AML progressive disease is defined in Appendix E (E.1.7.), and criteria for MDS/MPN is in Appendix F (F.1.4.).

Countries

United States

Participant flow

Participants by arm

ArmCount
Dose Level: 0
1 mg/kg of Ipilimumab will be administered intravenously over 90 ± 10 minutes after the DLI product observation period is completed, and dosing will continue in 3-week intervals for 4 cycles, unless unacceptable toxicity or symptomatic disease progression occurs.
18
Dose Level: 1
3 mg/kg of Ipilimumab will be administered intravenously over 90 ± 10 minutes after the DLI product observation period is completed, and dosing will continue in 3-week intervals for 4 cycles, unless unacceptable toxicity or symptomatic disease progression occurs.
6
Dose Level: 2
10 mg/kg of Ipilimumab will be administered intravenously over 90 ± 10 minutes after the DLI product observation period is completed, and dosing will continue in 3-week intervals for 4 cycles, unless unacceptable toxicity or symptomatic disease progression occurs.
1
Total25

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse reaction to Ipilimumab201
Overall StudyProgression/Relapse730
Overall StudyProhibited concomitant treatments310
Overall StudyProlonged treatment delays320
Overall StudyWithdrawal by Subject200

Baseline characteristics

CharacteristicDose Level: 0Dose Level: 1Dose Level: 2Total
Age, Continuous65 years57.5 years68 years65 years
Race/Ethnicity, Customized
Asian
1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Black/African American
1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Unknown/Not Reported
1 Participants0 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
15 Participants6 Participants1 Participants22 Participants
Sex: Female, Male
Female
7 Participants4 Participants0 Participants11 Participants
Sex: Female, Male
Male
11 Participants2 Participants1 Participants14 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
7 / 182 / 61 / 1
other
Total, other adverse events
18 / 186 / 61 / 1
serious
Total, serious adverse events
4 / 182 / 61 / 1

Outcome results

Primary

Maximum Tolerated Dose (MTD) for DLI

The primary objective of this study is to determine the safety (MTD) of CD25/Treg-depleted donor lymphocyte infusion (DLI) plus Ipilimumab in patients with myeloid relapse after matched-HCT. Participants will be evaluated for dose limiting toxicities (DLTs) at day 43. DLTs explained within section 5.4 of the protocol.

Time frame: Day 43 (6 weeks)

ArmMeasureValue (NUMBER)
CD25/Treg-depleted DLIMaximum Tolerated Dose (MTD) for DLI30000000 cells/kg
Primary

Maximum Tolerated Dose (MTD) for Ipilimumab

The primary objective of this study is to determine the safety (MTD) of CD25/Treg-depleted donor lymphocyte infusion (DLI) plus Ipilimumab in patients with myeloid relapse after matched-HCT. Participants will be evaluated for dose limiting toxicities (DLTs) at day 43. DLTs explained within section 5.4 of the protocol.

Time frame: Day 43 (6 weeks)

ArmMeasureValue (NUMBER)
CD25/Treg-depleted DLIMaximum Tolerated Dose (MTD) for Ipilimumab1 mg/kg
Secondary

Incidence of Acute GVHD Rates

Incidence of aGVHD will be measured at the below time point, and grading severity of aGVHD will be standardized using the chart and information in Appendix C.

Time frame: Day 92

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CD25/Treg-depleted DLIIncidence of Acute GVHD Rates2 Participants
Dose Level: 1Incidence of Acute GVHD Rates2 Participants
Dose Level: 2Incidence of Acute GVHD Rates1 Participants
Secondary

Incidence of Chronic GVHD Rates

Provider will assess study subject for severity of cGVHD per 2014 NIH consensus criteria at day 92.

Time frame: Day 92

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CD25/Treg-depleted DLIIncidence of Chronic GVHD Rates7 Participants
Dose Level: 1Incidence of Chronic GVHD Rates1 Participants
Dose Level: 2Incidence of Chronic GVHD Rates0 Participants
Secondary

Overall Survival

Duration of time from start of treatment to time of death.

Time frame: Day 92 and Week 60

ArmMeasureGroupValue (NUMBER)
CD25/Treg-depleted DLIOverall SurvivalDay 9289 percentage of participants
CD25/Treg-depleted DLIOverall SurvivalWeek 6061 percentage of participants
Dose Level: 1Overall SurvivalDay 92100 percentage of participants
Dose Level: 1Overall SurvivalWeek 6067 percentage of participants
Dose Level: 2Overall SurvivalWeek 60NA percentage of participants
Dose Level: 2Overall SurvivalDay 92NA percentage of participants
Secondary

Progression Free Survival

Duration of time from start of treatment to time of objective disease progression or death, whichever comes first. AML progressive disease is defined in Appendix E (E.1.7.), and criteria for MDS/MPN is in Appendix F (F.1.4.).

Time frame: Day 92 and Week 60

ArmMeasureGroupValue (NUMBER)
CD25/Treg-depleted DLIProgression Free SurvivalDay 9250 percentage of participants
CD25/Treg-depleted DLIProgression Free SurvivalWeek 6033 percentage of participants
Dose Level: 1Progression Free SurvivalDay 9283 percentage of participants
Dose Level: 1Progression Free SurvivalWeek 6017 percentage of participants
Dose Level: 2Progression Free SurvivalDay 92NA percentage of participants
Dose Level: 2Progression Free SurvivalWeek 60NA percentage of participants
Secondary

Response Rate as Determined by Complete Remission (CR) and CR With Incomplete Count Recovery (CRi)

Complete remission will be evaluated for each disease, along with duration of complete remission. AML morphological complete remission can be found in Appendix E (E.1.1.), and Relapse from CR/CRi is in E.1.3. MDS/MPN complete remission criteria is found in Appendix F (F.1.1), and criteria for relapse is found in F.1.5.

Time frame: Day 43 (6 weeks)

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
CD25/Treg-depleted DLIResponse Rate as Determined by Complete Remission (CR) and CR With Incomplete Count Recovery (CRi)8 Participants
Dose Level: 1Response Rate as Determined by Complete Remission (CR) and CR With Incomplete Count Recovery (CRi)4 Participants
Dose Level: 2Response Rate as Determined by Complete Remission (CR) and CR With Incomplete Count Recovery (CRi)0 Participants
Secondary

Severity of Acute GVHD Rates

Severity of aGVHD will be measured at the below time point, and grading severity of aGVHD will be standardized using the chart and information in Appendix C per Harris et al, 2016 GVHD Target Organ Staging, where 0 is no GVHD and 4 is severe. For the data table below: Grade I-IV reports any incidence of aGVHD, Grade II-IV reports the number of subjects who developed grade II, III, and IV aGVHD and Grade III-IV reports the number of subjects who developed Grade III and IV aGHVD. Grade 0: No stage 1-4 of any organ. Grade I: Stage 1-2 skin without liver, upper GI, or lower GI involvement. Grade II: Stage 3 rash and/or stage 1 liver and/or stage 1 upper GI and/or stage 1 lower GI. Grade III: Stage 2-3 liver and/or stage 2-3 lower GI, with stage 0-3 skin and/or stage 0-1 upper GI. Grade IV: Stage 4 skin, liver, or lower GI involvement, with stage 0-1 upper GI.

Time frame: Day 92

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CD25/Treg-depleted DLISeverity of Acute GVHD RatesGrade II-IV aGVHD0 Participants
CD25/Treg-depleted DLISeverity of Acute GVHD RatesGrade I-IV aGVHD2 Participants
CD25/Treg-depleted DLISeverity of Acute GVHD RatesGrade III-IV aGVHD2 Participants
Dose Level: 1Severity of Acute GVHD RatesGrade II-IV aGVHD1 Participants
Dose Level: 1Severity of Acute GVHD RatesGrade I-IV aGVHD2 Participants
Dose Level: 1Severity of Acute GVHD RatesGrade III-IV aGVHD1 Participants
Dose Level: 2Severity of Acute GVHD RatesGrade I-IV aGVHD1 Participants
Dose Level: 2Severity of Acute GVHD RatesGrade III-IV aGVHD1 Participants
Dose Level: 2Severity of Acute GVHD RatesGrade II-IV aGVHD0 Participants
Secondary

Severity of Chronic GVHD Rates

Provider will assess study subject for severity of cGVHD per 2014 NIH consensus criteria at day 92.

Time frame: Day 92

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
CD25/Treg-depleted DLISeverity of Chronic GVHD RatesModerate cGVHD3 Participants
CD25/Treg-depleted DLISeverity of Chronic GVHD RatesMild cGVHD2 Participants
CD25/Treg-depleted DLISeverity of Chronic GVHD RatesSevere cGVHD2 Participants
Dose Level: 1Severity of Chronic GVHD RatesModerate cGVHD0 Participants
Dose Level: 1Severity of Chronic GVHD RatesMild cGVHD1 Participants
Dose Level: 1Severity of Chronic GVHD RatesSevere cGVHD0 Participants
Dose Level: 2Severity of Chronic GVHD RatesMild cGVHD0 Participants
Dose Level: 2Severity of Chronic GVHD RatesSevere cGVHD0 Participants
Dose Level: 2Severity of Chronic GVHD RatesModerate cGVHD0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 5, 2026