A Trial of E7777 in Persistent and Recurrent Cutaneous T-Cell Lymphoma

Phase 3

Completed

• Conditions: Persistent or Recurrent Cutaneous T-Cell Lymphoma
• Interventions: Drug: E7777 9 mcg/kg

• Registration Number: NCT01871727
• Lead Sponsor: Eisai Inc.

Brief Summary

The purpose of this trial is to assess the efficacy of E7777 in participants with recurrent or persistent Cutaneous T-Cell Lymphoma (CTCL) in Stage I - III participants as assessed by objective response rate (ORR). A lead-in dose-finding part was used to determine dose level 9 microgram per kilogram (mcg/kg) E7777 that is being used to test efficacy and safety.

Detailed Description

This is a multicenter, open-label study of E7777 in participants with recurrent or persistent CTCL. The study consists of an initial Lead-in part (to select recommended dose of E7777 for Main part), followed by the Main part (to test efficacy). Participants will move through three phases while on study: Pretreatment Phase, Treatment Phase, and Extension Phase and a Follow-up Period.

Study Timeline

• Study First Submitted: 2013-03-28
• Study Start: 2013-05-30
• Study First Submitted QC: 2013-06-04
• Study First Posted: 2013-06-07
• Primary Completion: 2021-12-06
• Study Completion: 2021-12-14
• Status Verified: 2022-11
• Disposition First Submitted: 2022-12-05
• Disposition First Submitted QC: 2022-12-05
• Disposition First Posted: 2022-12-12
• Results First Submitted: 2024-09-02
• Results First Submitted QC: 2024-10-18
• Last Update Submitted: 2024-10-18
• Results First Posted: 2024-11-13
• Last Update Posted: 2024-11-13

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 112

Inclusion Criteria

Participants must meet all of the following criteria to be included in the study:

1. Age greater than or equal to 18 years.

2. Histopathologic diagnosis of CTCL (mycosis fungoides [MF] or Sezary Syndrome [SS]), confirmed by skin biopsy, or lymph node, or blood assessment, of current disease.

3. CD25 assay-positive tumor, defined as detectable CD25 on greater than or equal to 20% of total lymphoid infiltrate in biopsied lesions by immunohistochemistry.

4. CTCL disease stage at study entry as follows, according to ISCL/EORTC (Olsen 2011).

   • Lead-In Part: Stage IA - IV, except participants with CNS involvement.
   • Main Study: Stage I - III

5. History of prior therapies for CTCL: must have had prior therapy, any number of prior therapies allowed.

   Topical treatments (except topical chemotherapy) and steroids are not considered as prior therapies.

6. A minimum washout period of 4 weeks after previous CTCL therapy is recommended before the first dose of E7777.

   Participants must have recovered from any adverse effects from any previous CTCL therapy to Common Terminology Criteria for Adverse Events (CTCAE) Grade <2 before starting study drug. A shorter washout may be allowed if participant is experiencing progressive disease despite ongoing treatment.

7. Eastern Cooperative Oncology Group (ECOG) performance status 0, 1, or 2 in the Lead-In Part and performance status of 0 or 1 in the Main Study.

8. Life expectancy greater than or equal to 3 months in the Lead-In Part and greater than or equal to 12 months in the Main Study.

9. Adequate bone marrow reserves as evidenced by:

   • platelets greater than or equal to 100,000/mm^3 (100 x 10^9/L)
   • clinically stable hemoglobin greater than or equal to 9 gram per deciliter (g/dL) (90 g/L) and hematocrit greater than or equal to 27% without transfusion support

10. Normal hepatic function as evidenced by:

    • bilirubin <= 1.5* upper limit if normal (ULN) and alkaline phosphatase <=3.0*ULN
    • aspartate aminotransferase (AST) and alanine aminotransferase (ALT) <= 3.0*ULN
    • albumin >= 3.0 g/dL (30 g/L)

11. Adequate renal function as evidenced by serum creatinine less than or equal to 1.8 mg/dL (158 umol/L) or calculated creatinine clearance greater than or equal to 50 mL/min (per the Cockcroft-Gault formula) with less than 2+ protein or 24- hour urine creatinine clearance greater than or equal to 50 mL/minute with 24- hour urine protein less than 1gram.

12. Provide written informed consent prior to any study-specific screening procedures.

13. Females may not be lactating or pregnant at Screening or Baseline

14. All females will be considered to be of childbearing potential unless they are postmenopausal or have been sterilized surgically

15. Male participants must have had a successful vasectomy (confirmed azoospermia) or they and their female partner must meet the criteria above

Exclusion Criteria

Participants who meet any of the following criteria will be excluded from the study:

1. Prior denileukin diftitox therapy
2. Use of topical steroids within 14 days of Day 1 of initial therapy is not allowed.Topical steroids or systemic low dose steroids of less than or equal to 10 milligram per day (mg/day) prednisone are allowed in participants with erythroderma who have been on corticosteroids for a prolonged period of time and where discontinuation may lead to rebound flare in disease. The concomitant steroid medication is allowed as long as the type of steroid, route of administration, and steroid dose remain the same as what the participant had been receiving for a prolonged period of time.
3. Active malignancy (except for CTCL, definitively treated basal or squamous cell carcinoma of the skin, and carcinoma in-situ of the cervix) within the past 24 months.
4. Serious intercurrent illness
5. Significant cardiac disease requiring ongoing treatment, including congestive heart failure (CHF), severe coronary artery disease (CAD), cardiomyopathy, uncontrolled cardiac arrhythmia, unstable angina pectoris, or myocardial infarction (MI)
6. Significant pulmonary symptoms or disease
7. History of uncontrolled seizure disorder or active central nervous system disease
8. Major surgery within 2 weeks of study enrollment
9. Significant or uncontrolled infections requiring systemic anti-infective therapy
10. Known human immunodeficiency virus (HIV) infection; known active hepatitis B or hepatitis C infection
11. Females who are pregnant (positive urine test) or breastfeeding
12. Any history of a medical condition or a concomitant medical condition that, in the opinion of the investigator, would compromise the participant's ability to safely complete the study.

Exclusion Criteria

Not provided

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Arm && Interventions

Group	Intervention	Description
E7777	E7777 9 mcg/kg	-

Primary Outcome Measures

Name	Time	Method
Lead-In Part: Number of Participants With Dose-limiting Toxicities (DLTs) as Per National Cancer Institute Common Terminology Criteria for Adverse Events Version 4.03 (NCI CTCAE v4.03)	Cycle 1 (cycle length was 21 days)	DLTs as per NCI CTCAE v4.03 were defined as 1) serious infusion reaction (CTCAE) Grade 4 adverse event of "Infusion related reaction," or recurrent CTCAE Grade 3 despite administration of systemic steroid premedication after initial occurrence. Infusion reactions were defined as symptoms (example, fatigue, nausea, vomiting, arthralgia, myalgia, pyrexia, chills, rigors) occurring within 24 hours of E7777 infusion. 2) Capillary leak syndrome (CLS) CTCAE Grade 4 or Grade 3 (with exceptions). A CLS event was defined as the noted occurrence of at least 2 of the following: hypotension, edema, or serum albumin less than (\<) 3.0 gram per decilitre (g/dL). 3) Clinical visual impairment. 4) Any CTCAE Grade greater than or equal to (\>=) 4 adverse event (AE) that may represent an infusion reaction. 5) Any other Grade 3 or greater toxicity assessed as related to E7777 treatment and which in the opinion of a safety consultancy investigator panel, was a dose-limiting toxicity.
Lead-In Part: Maximum Tolerated Dose (MTD) of E7777	Cycle 1 (cycle length was 21 days)	The MTD was defined as the safe dose level established in Lead-In Part. MTD was determined by summarizing the number and percentage of participants with DLTs for the first cycle, by study dosing schedule, initial dosing level and overall for the Lead-In Part.
Main Study Part: Objective Response Rate (ORR) by Independent Review Committee (IRC) Based on Olsen 2011 Criteria	From the date of administration of the first dose of the study drug until disease progression (Up to 3 years 6 months)	ORR was defined as the percentage of participants whose best overall response (BOR) was complete response (CR) or partial response (PR) based on independent review committee on 2 assessments at least 3 weeks apart. The tumor response was based on global response score (GRS) Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites.

Secondary Outcome Measures

Name	Time	Method
Lead-In Part: Duration of Response (DOR) Per Investigator Assessment	From the date of first documentation of CR or PR until date of the first documentation of PD or death due to any cause (Up to 1 year 2 months)	DOR per investigator assessment was defined as the time from date when criteria for response (CR or PR) was first met until the date of the first documentation of disease progression (PD) or date of death from any cause. The tumor assessment was based on GRS Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites. PD was defined as any new lesion or unequivocally increase of previously involved sites from nadir.
Main Study Part: Duration of Response (DOR) Per Independent Review Committee	From the date of first documentation of CR or PR until date of the first documentation of PD or death due to any cause (Up to 3 years 6 months)	DOR per independent review committee was defined as the time from the date when criteria for response (CR or PR) was first met until the date of the first documentation of PD or date of death from any cause. The tumor assessment was based on GRS Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites. PD was defined as any new lesion or unequivocally increase of previously involved sites from nadir.
Lead-In Part: Time to Response (TTR) Per Investigator Assessment	From the date of administration of the first dose of the study drug until date of the first documentation of PR or CR (Up to 1 year 2 months)	Time to response per investigator assessment was defined as the time from date of first dose to the date of the first documented CR or PR. The tumor assessment was based on GRS Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites.
Main Study Part: Time to Response (TTR) Per Independent Review Committee	From the date of administration of the first dose of the study drug until date of the first documentation of PR or CR (Up to 3 years 6 months)	Time to response per independent review committee was defined as the time from date of first dose to the date of the first documented CR or PR. The tumor assessment was based on GRS Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites.
Lead-In Part and Main Study Part: ORR Per Investigator Assessment	From the date of administration of the first dose of the study drug until disease progression (Up to 3 years 6 months)	ORR per investigator assessment was defined as the percentage of participants whose BOR was CR or PR. The tumor response was based on GRS Olsen 2011 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites.
Main Study Part: ORR Per IRC Based on Prince 2010 Criteria	From the date of administration of the first dose of the study drug until disease progression (Up to 3 years 6 months)	ORR was defined as the percentage of participants whose BOR was CR, clinical complete response (CCR) or PR per IRC. The tumor response was based on Prince 2010 criteria. CR was defined as disappearance of all evidence of disease and PR was defined as regression of measurable disease and no new sites. CCR was defined as tumor residue not visible on esophagogram, computed tomography (CT), endoscopy, positron emission tomography (PET)-CT.
Lead-In Part and Main Study Part: Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Serious Adverse Events (SAEs)	From the first dose of study drug up to 30 days after the last dose (Up to 3 years and 7 months)	TEAE was defined as an adverse event that had an onset date, or a worsening in severity on or after the first dose of study drug up to the end of the study. SAE was any untoward medical occurrence that at any dose: resulted in death; life threatening required inpatient hospitalization; resulted in persistent, significant disability; was congenital anomaly/birth defect or medically important due to other reasons than mentioned criteria. Number of participants with TEAEs and SAEs were reported.
Lead-In Part: Maximum Serum Concentration (Cmax) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 minutes post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no Pharmacokinetic (PK) data was collected and analyzed for these doses and cycles.
Main Study Part: Maximum Serum Concentration (Cmax) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 minutes post-dose (Cycle length was 21 days)
Lead-In Part: Area Under the Curve From Time 0 to Time t (AUC[0-t]) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours Post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles. Here, min\*ng/mL means minute\*nanogram per milliliter.
Main Study Part: Area Under the Curve From Time 0 to Time t (AUC[0-t]) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)
Lead-In Part: Area Under the Curve From Time 0 to Time Infinity (AUC[0-inf]) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles.
Main Study Part: Area Under the Curve From Time 0 to Time Infinity (AUC[0-inf]) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis at Cycle 3 Day 1, hence no PK data was collected and analyzed for this timepoint.
Lead-In Part: Terminal Elimination Half-life (t1/2) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles.
Main Study Part: Terminal Elimination Half-life (t1/2) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)
Lead-In Part: Time to Reach Maximum (Peak) Concentration After Drug Administration (Tmax)	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles.
Main Study Part: Time to Reach Maximum (Peak) Concentration After Drug Administration (Tmax)	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)
Lead-In Part: Total Body Clearance (CL) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles. Here, mL/min/kg means milliliter per minute per kilogram.
Main Study Part: Total Body Clearance (CL) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis at Cycle 3 Day 1, hence no PK data was collected and analyzed for this timepoint.
Lead-In Part: Volume of Distribution at Steady State (Vdss) of E7777	Cycles 1, 3, 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis in 15 mcg/kg (Cycles 3 and 5), 6 mcg/kg (Cycle 5), 9 mcg/kg (Cycles 3 and 5), 12 mcg/kg (Cycle 3), hence no PK data was collected and analyzed for these doses and cycles.
Main Study Part: Volume of Distribution at Steady State (Vdss) of E7777	Cycles 1, 3 and 5 Day 1: Pre-dose up to 300 hours post-dose (Cycle length was 21 days)	Participants were not available for analysis at Cycle 3 Day 1, hence no PK data was collected and analyzed for this timepoint.
Lead-In Part: Percentage of Participants Testing Positive for Anti-E7777 and Anti-interleukin (IL)-2 Antibodies	Cycle 1 Day 1, Cycle 2 Day 1, Cycle 3 Day 1, Cycle 5 Day 1	Immunogenicity was assessed by determining the anti-E7777 and anti-IL-2 antibodies in serum using validated methods. Percentage of participants testing positive for Anti-E7777 and Anti-IL-2 antibodies were reported.
Main Study Part: Percentage of Participants Testing Positive for Anti-E7777 and Anti-IL-2 Antibodies	Cycle 1 Day 1, Cycle 2 Day 1, Cycle 3 Day 1	Immunogenicity was assessed by determining the anti-E7777 and anti-IL-2 antibodies in serum using validated methods. Percentage of participants testing positive for Anti-E7777 and Anti-IL-2 antibodies were reported.
Main Study Part: Number of Participants With Objective Skin Response	Up to 30 months	Modified severity weighted assessment tool (mSWAT) was used to measure skin disease severity based on the percentage of body surface area (BSA) with patches, plaques, or tumors. Total scores were calculated by multiplying the BSA percentage for each category of lesion (patch, plaque, or tumor) by a weighting factor and adding the three sub-scores which ranged from 0 (unaffected) to 400 (severely affected). Lower scores indicated a lower degree of skin disease severity. CR corresponded to 100% clearance of skin lesions present at baseline (mSWAT score of 0). PR corresponded to 50-99% clearance of skin disease present at baseline (at least 50% reduction in mSWAT score), without new tumors.
Main Study Part: Duration of Skin Response	Up to 30 months	The duration of skin response based on the mSWAT score was defined as time from the date when criteria for skin response (CR or PR) was first met until the date of documented PD or death due to any cause for those participants with a confirmed PR or CR. mSWAT was used to measure skin disease severity based on the percentage of BSA with patches, plaques, or tumors. Total scores were calculated by multiplying the BSA percentage for each category of lesion (patch, plaque, or tumor) by a weighting factor and adding the three sub-scores which ranged from 0 (unaffected) to 400 (severely affected). Lower scores indicated a lower degree of skin disease severity. CR corresponded to 100% clearance of skin lesions present at baseline (mSWAT score of 0). PR corresponded to 50-99% clearance of skin disease present at baseline (at least 50% reduction in mSWAT score), without new tumors.
Main Study Part: Time to Skin Response	Up to 30 months	The time to skin response based on the mSWAT score was defined as time from the date of first dose to the date when criteria for skin response (CR or PR) were first met. mSWAT was used to measure skin disease severity based on the percentage of BSA with patches, plaques, or tumors. Total scores were calculated by multiplying the BSA percentage for each category of lesion (patch, plaque, or tumor) by a weighting factor and adding the three sub-scores which ranged from 0 (unaffected) to 400 (severely affected). Lower scores indicated a lower degree of skin disease severity. CR corresponded to 100% clearance of skin lesions present at baseline (mSWAT score of 0). PR corresponded to 50-99% clearance of skin disease present at baseline (at least 50% reduction in mSWAT score), without new tumors.

Trial Locations

Locations (22)

Winship Cancer Institute of Emory University; 🇺🇸 Atlanta, Georgia, United States

Rush University Medical Center; 🇺🇸 Chicago, Illinois, United States

Yale University Cancer Center; 🇺🇸 New Haven, Connecticut, United States

Peter MacCallum Cancer Institute; 🇦🇺 East Melbourne, Victoria, Australia

Dana Farber Cancer Institute; 🇺🇸 Boston, Massachusetts, United States

Auxilio Mutuo Cancer Center; 🇵🇷 San Juan, Puerto Rico

Westmead Hospital; 🇦🇺 Westmead, New South Wales, Australia

Epworth Healthcare Freemasons; 🇦🇺 East Melbourne, Victoria, Australia

University of South Florida College of Medicine; 🇺🇸 Tampa, Florida, United States

University of Pittsburgh Medical Center; 🇺🇸 Pittsburgh, Pennsylvania, United States

University of Arkansas for Medical Sciences; 🇺🇸 Little Rock, Arkansas, United States

City of Hope Medical Center National Medical Center; 🇺🇸 Duarte, California, United States

University of Alabama at Birmingham, Dermatology at Whitaker Clinic; 🇺🇸 Birmingham, Alabama, United States

University of Florida; 🇺🇸 Gainesville, Florida, United States

University of PittsburghMedical Center Presbyterian Shadyside; 🇺🇸 Pittsburgh, Pennsylvania, United States

The University of TX MD Anderson Cancer Center; 🇺🇸 Houston, Texas, United States

Hackensack University Medical Center; 🇺🇸 Hackensack, New Jersey, United States

Northwestern Memorial Hospital; 🇺🇸 Chicago, Illinois, United States

UC Irvine Health-Chao Family Comprehensive Cancer Center; 🇺🇸 Orange, California, United States

Stanford University Cancer Center; 🇺🇸 Stanford, California, United States

H. Lee Moffitt Cancer Center; 🇺🇸 Tampa, Florida, United States

Columbia University Medical Center; 🇺🇸 New York, New York, United States