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Trial · NCT04185220

Phase I Study of Recombinant Human IL-15 (rhIL-15) and Mogamulizumab for People With Refractory or Relapsed Adult T-Cell Leukemia and Mycosis Fungoides/Sezary Syndrome

NCT04185220, Phase 1, Completed, National Cancer Institute (NCI); results first posted 2021-12-14

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Phase I Study of Recombinant Human IL-15 (rhIL-15) and Mogamulizumab for People With Refractory or Relapsed Adult T-Cell Leukemia and Mycosis Fungoides/Sezary Syndrome. Trials, record NCT04185220. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT04185220

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Phase I Study of Recombinant Human IL-15 (rhIL-15) and Mogamulizumab for People With Refractory or Relapsed Adult T-Cell Leukemia and Mycosis Fungoides/Sezary Syndrome
NCT number
NCT04185220
Status
Completed
Phases
Phase 1
Enrollment
6 participants, actual
Lead sponsor
National Cancer Institute (NCI)
Conditions
Adult T-Cell Lymphoma/Leukemia, Sezary Syndrome, Mycosis Fungoides
Interventions
Recombinant human Interleukin-15 (rhIL-15), Mogamulizumab
First posted
2019-12-04
Last updated
2023-01-04
Results first posted
2021-12-14

Source ClinicalTrials.gov

Registered outcomes7

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryMaximum Tolerated Dose (MTD) of Recombinant Human Interleukin 15 (IL-15) (rhIL-15)28 days
The MTD is the dose level at which no more than 1 of up to 6 patients experience DLT during the DLT evaluation window(s), or the dose below that at which at least 2 (of ≤6) patients have DLT. A dose-limiting toxicity (DLT) is defined as: any grade 3, 4, or 5 toxicity if not incontrovertibly due to disease progression or an extraneous cause, and deemed possibly, probably or definitely related to IL-15 or mogamulizumab.
PrimaryNumber of Grade 1-4 Treatment Related Adverse EventsDate treatment consent signed to date off study, approximately 5 months and 25 days for dose level 1, and 4 months and 14 days for dose level 2.
Adverse events assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0). Grade 1 is mild. Grade 2 is moderate. Grade 3 is severe. Grade 4 is life-threatening. And Grade 5 is death related to adverse event.
SecondaryEvent Free SurvivalUp to one year
Event-free survival (EFS) is defined as the duration of time from the date of study enrollment until time of disease relapse, disease progression, alternative therapy for lymphoma given (such as radiation), or death, whichever occurs first.
SecondaryProgression-free SurvivalUp to one year
Progression-free survival (PFS) is defined as the duration of time from the date of study enrollment until time of disease relapse, disease progression, or death, whichever occurs first. Progressive Disease (PD) is new or increased lesions.
SecondaryNumber of Participants Overall Response6 cycles (one cycle is 28 days)
Overall response was assessed by the Response Criteria for Adult T-cell Leukemia-Lymphoma. The response rate was determined and reported along with a 95% confidence interval. Complete Response (CR) is disappearance of all disease. Unconfirmed Complete Response (CRu) is stable residual mass in bulky lesion. Partial Response (PR) is regression of disease. Relapsed Disease (RD)/Progressive Disease (PD) is new or increased lesions. And Stable Disease (SD) is failure to attain CR/PR and no PD.
OtherNumber of Participants With Serious and Non-serious Adverse Events Assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0)Date treatment consent signed to date off study, approximately 5 months and 25 days for dose level 1, and 4 months and 14 days for dose level 2.
Here is the number of participants with serious and non-serious adverse events assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0). A non-serious adverse event is any untoward medical occurrence. A serious adverse event is an adverse event or suspected adverse reaction that results in death, a life-threatening adverse drug experience, hospitalization, disruption of the ability to conduct normal life functions, congenital anomaly/birth defect or important medical events that jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the previous outcomes mentioned.
OtherNumber of Participants With a Dose-limiting Toxicity (DLT) Possibly, Probably or Definitely Related to Interleukin 15 (IL-15) or Mogamulizumab.First cycle of treatment (28 days)
A DLT is defined as any grade 3 (severe), 4 (life-threatening), or 5 (death related to adverse event) toxicity if not incontrovertibly due to disease progression or an extraneous cause, and deemed possibly, probably or definitely related to IL-15 or mogamulizumab.

Outcomes7

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYMaximum Tolerated Dose (MTD) of Recombinant Human Interleukin 15 (IL-15) (rhIL-15)28 daysmcg/kg/dayNUMBER
PRIMARYNumber of Grade 1-4 Treatment Related Adverse EventsDate treatment consent signed to date off study, approximately 5 months and 25 days for dose level 1, and 4 months and 14 days for dose level 2.adverse eventsNUMBER
SECONDARYEvent Free SurvivalUp to one yearMonthsMEAN
SECONDARYProgression-free SurvivalUp to one yearMonthsMEAN
SECONDARYNumber of Participants Overall Response6 cycles (one cycle is 28 days)ParticipantsCOUNT_OF_PARTICIPANTS
OTHER_PRE_SPECIFIEDNumber of Participants With Serious and Non-serious Adverse Events Assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0)Date treatment consent signed to date off study, approximately 5 months and 25 days for dose level 1, and 4 months and 14 days for dose level 2.ParticipantsCOUNT_OF_PARTICIPANTS
OTHER_PRE_SPECIFIEDNumber of Participants With a Dose-limiting Toxicity (DLT) Possibly, Probably or Definitely Related to Interleukin 15 (IL-15) or Mogamulizumab.First cycle of treatment (28 days)ParticipantsCOUNT_OF_PARTICIPANTS

Results by group103

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Maximum Tolerated Dose (MTD) of Recombinant Human Interleukin 15 (IL-15) (rhIL-15)All Participants2mcg/kg/day
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 1 (Interleukin-15 2mcg/kg/Day)Grade 1 Alanine aminotransferase increased2adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 2 (Interleukin-15 4mcg/kg/Day)Grade 1 Alanine aminotransferase increased1adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 1 (Interleukin-15 2mcg/kg/Day)Grade 1 Aspartate aminotransferase increased2adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 2 (Interleukin-15 4mcg/kg/Day)Grade 1 Aspartate aminotransferase increased1adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 1 (Interleukin-15 2mcg/kg/Day)Grade 1 Bronchial infection1adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 2 (Interleukin-15 4mcg/kg/Day)Grade 1 Bronchial infection0adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 1 (Interleukin-15 2mcg/kg/Day)Grade 1 Chills1adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 2 (Interleukin-15 4mcg/kg/Day)Grade 1 Chills0adverse events
Number of Grade 1-4 Treatment Related Adverse EventsDose Level 1 (Interleukin-15 2mcg/kg/Day)Grade 1 Diarrhea1adverse events

Participant flow12

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Dose EscalationSTARTEDDose Level 1 (Interleukin-15 2mcg/kg/Day)3
Dose EscalationSTARTEDDose Level 2 (Interleukin-15 4mcg/kg/Day)3
Dose EscalationCOMPLETEDDose Level 1 (Interleukin-15 2mcg/kg/Day)3
Dose EscalationCOMPLETEDDose Level 2 (Interleukin-15 4mcg/kg/Day)1
Dose EscalationNOT COMPLETEDDose Level 1 (Interleukin-15 2mcg/kg/Day)0
Dose EscalationNOT COMPLETEDDose Level 2 (Interleukin-15 4mcg/kg/Day)2
Dose ExpansionSTARTEDDose Level 1 (Interleukin-15 2mcg/kg/Day)0
Dose ExpansionSTARTEDDose Level 2 (Interleukin-15 4mcg/kg/Day)0
Dose ExpansionCOMPLETEDDose Level 1 (Interleukin-15 2mcg/kg/Day)0
Dose ExpansionCOMPLETEDDose Level 2 (Interleukin-15 4mcg/kg/Day)0

Adverse events152

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
otherAcute kidney injuryRenal and urinary disordersDose Level 1 (Interleukin-15 2mcg/kg/Day)131
otherAcute kidney injuryRenal and urinary disordersDose Level 2 (Interleukin-15 4mcg/kg/Day)030
otherAlanine aminotransferase increasedInvestigationsDose Level 1 (Interleukin-15 2mcg/kg/Day)134
otherAlanine aminotransferase increasedInvestigationsDose Level 2 (Interleukin-15 4mcg/kg/Day)131
otherAlkaline phosphatase increasedInvestigationsDose Level 1 (Interleukin-15 2mcg/kg/Day)132
otherAlkaline phosphatase increasedInvestigationsDose Level 2 (Interleukin-15 4mcg/kg/Day)030
otherAnemiaBlood and lymphatic system disordersDose Level 1 (Interleukin-15 2mcg/kg/Day)1318
otherAnemiaBlood and lymphatic system disordersDose Level 2 (Interleukin-15 4mcg/kg/Day)134
otherAnorexiaMetabolism and nutrition disordersDose Level 1 (Interleukin-15 2mcg/kg/Day)030
otherAnorexiaMetabolism and nutrition disordersDose Level 2 (Interleukin-15 4mcg/kg/Day)131

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityDose Level 1 (Interleukin-15 2mcg/kg/Day)23
Total, all-cause mortalityDose Level 2 (Interleukin-15 4mcg/kg/Day)13
Total, other adverse eventsDose Level 1 (Interleukin-15 2mcg/kg/Day)33
Total, other adverse eventsDose Level 2 (Interleukin-15 4mcg/kg/Day)33
Total, serious adverse eventsDose Level 1 (Interleukin-15 2mcg/kg/Day)33
Total, serious adverse eventsDose Level 2 (Interleukin-15 4mcg/kg/Day)23

Papers2

The papers the trial lists on ClinicalTrials.gov.

PMIDListed asSource
33883258DERIVEDPubMed
40546724DERIVEDPubMed

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons3

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
Dose Level 1 (Interleukin-15 2mcg/kg/Day) vs Dose Level 2 (Interleukin-15 4mcg/kg/Day): Number of Participants With Serious and Non-serious Adverse Events Assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0)
Trial comparisons
Dose Level 1 (Interleukin-15 2mcg/kg/Day) vs Dose Level 2 (Interleukin-15 4mcg/kg/Day): deaths from any causeTrial comparisons
Dose Level 1 (Interleukin-15 2mcg/kg/Day) vs Dose Level 2 (Interleukin-15 4mcg/kg/Day): serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT04185220

GET https://conductscience.org/api/trials/v1/NCT04185220/results?page=2