Hairy Cell LeukemiaPhase 1NCT00586924
A Phase I, Multicenter Dose Escalation Study in Patients With Hairy Cell Leukemia
A Phase 1 study testing Moxetumomab Pasudotox (CAT 8015) and CAT 8015 (Moxetumomab Pasudotox) in people with Hairy Cell Leukemia, run by MedImmune LLC at 4 sites in 2 countries.
Trial summary
A dose-escalation study to identify the dose-limiting toxicity (DLT) and maximum tolerated dose (MTD), defined as the highest dose that can safely be given to a participant and establish the safest dose based on the highest tolerated dose for clinical testing. Read more about this study
- Who is it for?
- Ages 18 to 99 years
- Conditions the study is for
- Hairy Cell Leukemia
- What is being tested?
- Moxetumomab Pasudotox (CAT 8015) and CAT 8015 (Moxetumomab Pasudotox)
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 49 participants
- Where
- 4 sitesin 2 countries
- Study dates
- 10 May 2007to 6 May 2015
- Phase
- Phase 1
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 99 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Inclusion Criteria: Confirmed diagnosis of HCL, Measurable disease, Participant's must have had at least 2 prior systemic therapies. There must have been at least 2 prior courses of purine analog, or 1 if the response to this course lasted less than (<) 2 years, or if the participant had unacceptable toxicity to purine analog, Eastern Cooperative Oncology Group (ECOG) performance status of 0-2, Participant's with other cancers who meet eligibility criteria and have less than 5 years of disease free survival will be considered on a case-by-case basis, Life expectancy of greater than 6 months, as assessed by principal investigator, Must be able to understand and sign informed consent, Must be at least 18 years old, Female and male participants must agree to use an approved method of contraception during the study.
Exclusion Criteria: - History of allogeneic bone marrow transplant, Documented and ongoing central nervous system involvement with their malignant disease (history of central nervous system (CNS) involvement is not an exclusion criteria), Pregnant or breast-feeding females, HIV positive serology (due to increased risk of severe infection and unknown interaction of CAT-8015 with antiretroviral drugs, Hepatitis B surface antigen positive. - Hepatic function: Serum transaminases (either alanine transaminase (ALT) or aspartate transaminase (AST)) or bilirubin: greater than or equal to (>=) Grade 2, unless bilirubin is due to Gilbert's disease. -Renal function: Serum creatinine clearance less than or equal to (<=) 60 millilitre per minute (mL/min) as estimated by Cockroft-Gault formula. -Hematologic function: The absolute neutrophil count (ANC) < 1000/ cubic millimetres (cmm), or platelet count <50,000/cmm, if these cytopenias are not judged by the investigator to be due to underlying disease (i.e. potentially reversible with anti-neoplastic therapy). -Pulmonary function: Participant's with < 50% of predicted forced expiratory volume (FEV1) or <50% of predicted diffusing capacity for carbon monoxide (DLCO), corrected for hemoglobin concentration and alveolar volume. Uncontrolled pulmonary infection, presence of pulmonary edema, Oxygen saturation at rest < 88% measured by pulse oximetry or partial pressure of oxygen (PaO2) < 55 millimetre(s) of mercury (mm Hg), Serum albumin < 2 g/dL, Radioimmunotherapy within 2 years prior to enrollment in study.
Trial locations and contacts
4 sites in 2 countries.
4 sites in 2 countries
United States3 sites
Research Site
Bethesda, Maryland, 20892
Research Site
Chicago, Illinois, 60611
Research Site
Stanford, California, 94305
About this study
Official title: A Phase I, Multicenter, Dose Escalation Study of CAT-8015 in Patients With Relapsed or Refractory Hairy Cell Leukemia (HCL)
A dose-escalation study to identify the dose-limiting toxicity (DLT) and maximum tolerated dose (MTD), defined as the highest dose that can safely be given to a participant and establish the safest dose based on the highest tolerated dose for clinical testing.
Read the detailed description
A Phase 1, multicenter, dose escalation study of moxetumomab pasudotox (CAT-8015) in participants with relapsed or refractory hairy cell leukemia (HCL) to estimate the MTD, defined as the highest dose that can be safely administered to a patient, and to establish a safe dose, based on the MTD, for subsequent clinical testing (Phase 2 recommended dose).
- Conditions
- Hairy Cell Leukemia
- Being tested
- Moxetumomab Pasudotox (CAT 8015), CAT 8015 (Moxetumomab Pasudotox)
- Keywords
- CAT-8015, Moxetumomab pasudotox
- Medical subject headings
- Leukemia, Hairy Cell
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Moxetumomab Pasudotox (CAT 8015)Drug
Participants received intravenous infusion of 5 microgram per kilogram (mcg/kg) moxetumomab pasudotox (CAT-8015) on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until complete response (CR), progressive disease (PD), initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
Moxetumomab Pasudotox (CAT 8015)Drug
Participants received intravenous infusion of 10 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
Moxetumomab Pasudotox (CAT 8015)Drug
Participants received intravenous infusion of 20 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
Moxetumomab Pasudotox (CAT 8015)Drug
Participants received intravenous infusion of 30 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
CAT 8015 (Moxetumomab Pasudotox)Drug
Participants received intravenous infusion of 40 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
Moxetumomab Pasudotox (CAT 8015)Drug
Participants received intravenous infusion of 50 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy.
| Study group | Role | What they receive |
|---|---|---|
| 5 mcg/kg | Experimental | Participants received intravenous infusion of 5 microgram per kilogram (mcg/kg) moxetumomab pasudotox (CAT-8015) on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until complete response (CR), progressive disease (PD), initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: Moxetumomab Pasudotox (CAT 8015) |
| 10 mcg/kg | Experimental | Participants received intravenous infusion of 10 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: Moxetumomab Pasudotox (CAT 8015) |
| 20 mcg/kg | Experimental | Participants received intravenous infusion of 20 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: Moxetumomab Pasudotox (CAT 8015) |
| 30 mcg/kg | Experimental | Participants received intravenous infusion of 30 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: Moxetumomab Pasudotox (CAT 8015) |
| 40 mcg/kg | Experimental | Participants received intravenous infusion of 40 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: CAT 8015 (Moxetumomab Pasudotox) |
| 50 mcg/kg | Experimental | Participants received intravenous infusion of 50 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. Receives: Drug: Moxetumomab Pasudotox (CAT 8015) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Number of Participants With Dose Limiting Toxicities (DLTs)
Adverse events are suspected of causal relationship to drug and are >=Grade (G) 3 in severity considered DLTs: G 3 or 4 hematologic abnormalities at baseline due to disease were not evaluable for hematologic DLT, G 2 allergic reactions of bronchospasm or urticaria, or any >= G3 allergic reaction, in presence of pre-medication were considered DLTs. Following >= G 3 non-hematological treatment-related toxicities not considered DLTs: Tumor lysis syndrome, G 3 low electrolyte levels with pre-existing low levels of same electrolytes, anticoagulant therapy, G 3 or 4 infection or neutropenic fever unless relationship to IP is suspected, G 3 transaminase, alkaline phosphatase, bilirubin or other liver function test elevation provided resolution to values required for study entry prior to start of next cycle, G 3 fever, G 3 hypertriglyceridemia and hypercholesterolemia, and G 4 hypertriglyceridemia lasting <2 months, G 3 hypoalbuminemia lasting <7 days occurred in absence of CLS.
Measured: Cycle 1 Day 1 to Cycle 2 Day 10 (each cycle duration was 28 days)
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
The TEAEs are defined as adverse events (AEs) present at baseline that worsened in intensity after administration of investigational product or events absent at baseline that emerged after administration of study drug, for the period extending to 30 days after the last dose of study drug. A serious adverse event (SAE) is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening situation (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant who received moxetumomab pasudotox.
Measured: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Number of Participants With Vital Signs Abnormalities Recorded as Treatment-Emergent Adverse Events (TEAEs)
Vital signs abnormalities reported as TEAEs included pyrexia, weight increased, dyspnoea, hypoxia, hypertension, hypotension.
Measured: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Number of Participants With Clinically Relevant Electrocardiogram (ECG) Abnormalities Recorded as Adverse Events (AEs)
Cardiac AEs observed in participants with clinically significant ECG abnormalities included; ECG QT prolonged, Sinus tachycardia and Atrioventricular block first degree.
Measured: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Number of Participants With Clinically Significant Laboratory Abnormalities Recorded as Treatment-Emergent Adverse Events (TEAEs)
An abnormal laboratory finding which required an action or intervention by the investigator, or a finding judged by the investigator to represent a change beyond the range of normal physiologic fluctuation were reported as an adverse event.
Measured: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Number of Participants With Objective Response Rate (ORR): Complete Response (CR) or Partial Response (PR)
Objective response rate defined as proportion of participants with confirmed CR or confirmed PR according to Response Evaluation Criteria for hairy cell leukemia (HCL). A CR is defined as: No evidence of leukemic cells by routine H/E stains of peripheral blood and bone marrow. No hepatomegaly, splenomegaly, or lymphadenopathy by physical examination and/or appropriate radiographic techniques. Normal complete blood count as: Neutrophils >= 1,500/mcL, Platelets >= 100,000/mcL, and Hemoglobin >= 11.0 gm/dL without transfusions or growth factors for at least 4 weeks. Partial response requires all of following: >=50% reduction in peripheral blood lymphocyte from pretreatment baseline value, lymphadenopathy, and abnormal hepatosplenomegaly by CT scan or physical exam, and complete blood count as Neutrophils >= 1,500/mcL, Platelets >=100,000/mcL, and Hemoglobin >= 11.0 g/dL or 50% improvement of all parameters over baseline without transfusions or growth factors for at least 4 weeks.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Number of Participants With Complete Response (CR)
The CR is defined by: No evidence of leukemic cells by routine H/E stains of the peripheral blood and bone marrow. No hepatomegaly, splenomegaly, or lymphadenopathy by physical examination and/or appropriate radiographic techniques. Normal complete blood count as exhibited by: Neutrophils >= 1,500/microliter (mcL), Platelets >= 100,000/mcL, and Hemoglobin >= 11.0 gram per deciliter (gm/dL) without transfusions or growth factors for at least 4 weeks.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Number of Participants With Partial Response (PR)
Partial response requires all of the following: >=50% decrease in peripheral blood lymphocyte count from the pretreatment baseline value, >=50% reduction in lymphadenopathy, >=50% reduction in abnormal hepatosplenomegaly by computed tomography or physical exam, Neutrophils >= 1,500/mcL or 50% improvement over baseline without growth factors for at least 4 weeks, Platelets >=100,000/mcL or 50% improvement over baseline, and Hemoglobin >= 11.0 g/dL or 50% improvement over baseline without transfusions or growth factors for at least 4 weeks. For participants who are transfusion-dependent at baseline, a hemoglobin of >= 9.0 g/dL without transfusions or growth factors for at least 4 weeks.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Number of Participants With Stable Disease (SD)
Stable disease was characterized by not meeting the criteria for CR, PR or PD.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Number of Participants With Progressive Disease (PD)
Progressive disease is defined by at least one of the following compared to pretreatment:>= 25% increase in the sum of the products of the greatest perpendicular dimensions of at least two lymph nodes on two consecutive examinations at least 2 weeks apart (at least 1 node must be >= 2 cm) or appearance of new palpable lymph nodes, >=25% increase in the size of the liver and/or spleen as determined by measurement below the respective costal margin, or appearance of new palpable hepatomegaly or splenomegaly that was not previously present, >=50% increase in the absolute number of circulating lymphocytes, >=25% decrease in hemoglobin (must be < 11g/dL), platelets (must be < 100,000/mcL), or absolute neutrophil count (must be < 1500/mcL) unless these are judged to be effects of treatment.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to Complete Response
Time to complete response (CR) was measured from the start of moxetumomab pasudotox treatment to the first documentation of CR and was evaluated only in participants who received any treatment of moxetumomab pasudotox and had achieved a CR. Time to complete response was summarized using Kaplan-Meier estimates (median time, 95% confidence interval [CI] for median time).
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to Objective Response
Time to OR was measured from the start of moxetumomab pasudotox treatment to the first documentation of OR and was evaluated only in participants who received any treatment of moxetumomab pasudotox and had achieved an OR (CR or PR). Objective response (OR) was defined as the participants with confirmed CR or confirmed PR according to Response Evaluation Criteria.
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Duration of Complete Response
Duration of CR was measured from the first documentation of CR to the first documented non-CR and was evaluated in participants who had achieved an CR. Duration of CR were summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Duration of Objective Response
Duration of response was measured from the first documentation of objective response (OR) to the first documented non-response of SD, PD, or relapse and was only evaluated in participants who had achieved an OR (CR or PR). Duration of OR was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to Progression
Time to disease progression/relapse is measured from the start of moxetumomab pasudotox treatment until the first documentation of disease progression or relapse and was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Progression-free Survival (PFS)
PFS was measured from the start of moxetumomab pasudotox treatment until the first documentation of disease progression/relapse or death, whichever occurred first. PFS was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Measured: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Moxetumomab Pasudotox for Cycle 1 on Day 1
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
Measured: Cycle 1 Day 1: pre-infusion; at 15 minutes (min) during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 hours (h) post infusion
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Moxetumomab Pasudotox for Cycle 1 on Day 5
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
Measured: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Maximum Observed Serum Concentration (Cmax) for Moxetumomab Pasudotox for Cycle 1 on Day 1
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
Measured: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Maximum Observed Serum Concentration (Cmax) for Moxetumomab Pasudotox for Cycle 1 on Day 5
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
Measured: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Area Under the Curve From Time Zero to the Time of Last Quantifiable Concentration (AUC[0-last]) of Moxetumomab Pasudotox for Cycle 1 on Day 1
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
Measured: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Area Under the Curve From Time Zero to the Time of Last Quantifiable Concentration (AUC[0-last]) of Moxetumomab Pasudotox for Cycle 1 on Day 5
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
Measured: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Systemic Clearance (CL) of Moxetumomab Pasudotox for Cycle 1 on Day 1
Systemic Clearance (CL) is a quantitative measure of the rate at which a drug substance is removed from the body. The total systemic clearance after intravenous dose was estimated by dividing the total administered dose by area under plasma concentration-time curve from time zero to infinite time (AUC[0-infinity]).
Measured: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Systemic Clearance (CL) of Moxetumomab Pasudotox for Cycle 1 on Day 5
Systemic Clearance (CL) is a quantitative measure of the rate at which a drug substance is removed from the body. The total systemic clearance after intravenous dose was estimated by dividing the total administered dose by AUC(0-infinity).
Measured: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Terminal Phase Elimination Half Life (t1/2) of Moxetumomab Pasudotox for Cycle 1 on Day 1
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z).
Measured: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Terminal Phase Elimination Half Life (t1/2) of Moxetumomab Pasudotox for Cycle 1 on Day 5
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z).
Measured: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
AUC Accumulation Ratio of Moxetumomab Pasudotox for Cycle 1
The AUC accumulation ratio of moxetumomab pasudotox was calculated as the geometric mean ratio of AUC(0-last) on the last day and the first day of a multiple dose regimen: Day 5/Day 1.
Measured: Cycle 1 Day 1 and Day 5: pre-infusion, at 15 min during the infusion, at the end of infusion, and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Cmax Accumulation Ratio of Moxetumomab Pasudotox for Cycle 1
The Cmax accumulation ratio of moxetumomab pasudotox was calculated as the geometric mean ratio of Cmax on the last day and the first day of a multiple dose regimen: Day 5/Day 1.
Measured: Cycle 1 Day 1 and Day 5: pre-infusion, at 15 min during the infusion, at the end of infusion, and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Secondary outcomes (4)
Number of Participants With Positive Neutralizing Antibodies and Correlation to Antitumor Activity
Participants tested for immunogenicity to moxetumomab pasudotox prior to enrollment, before each cycle and at end of study. The neutralization assay measures the capacity of participant's plasma (antibodies) to inhibit the binding of moxetumomab pasudotox to its target, cluster of differentiation 22 (CD22), coated onto enzyme linked immunosorbent assay (ELISA) plates. Significant level of neutralizing antibody activity defined as the capacity of test plasma to inhibit >50% of the binding of CAT-8015 to CD22 using an ELISA-based method.
Measured: Up to end of treatment (approximately 8 years)
CD22 Expression Levels From Peripheral Blood by Best Response
Participants malignant cells (peripheral blood) were tested for cluster of differentiation 22 (CD22) expression by fluorescence-activated cell sorter (FACS) analysis.
Measured: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
CD22 Expression Levels From Bone Marrow by Best Response
Participants malignant cells (paraffin block biopsy specimen) were tested for CD22 expression by FACS analysis.
Measured: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
Soluble CD22 Levels by Best Response
Soluble CD22 was collected from the participant's plasma and was performed at the NCI using an ELISA method.
Measured: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Jan 2008 (estimated)
- Study start10 May 2007
- Primary completion6 May 2015
- Study completion6 May 2015
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (2)Papers the sponsor has linked to this study.
- Other trials for Hairy Cell LeukemiaStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Enrolment
- 49 participants (actual)
Sponsor and investigators
- Lead sponsor
- MedImmune LLC
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- Cambridge Antibody Technology
- Responsible party
- Sponsor
- Investigators
- MedImmune LLC, Study director, MedImmune LLC
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00586924
- Sponsor's protocol ID
- CAT-8015-1001
- Status last verified
- Dec 2018
- First submitted
- 21 Dec 2007
- Last updated
- 2 Apr 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
Publications
Kreitman RJ, Tallman MS, Robak T, Coutre S, Wilson WH, Stetler-Stevenson M, Fitzgerald DJ, Lechleider R, Pastan I. Phase I trial of anti-CD22 recombinant immunotoxin moxetumomab pasudotox (CAT-8015 or HA22) in patients with hairy cell leukemia. J Clin Oncol. 2012 May 20;30(15):1822-8. doi: 10.1200/JCO.2011.38.1756. Epub 2012 Feb 21.
PubMed 22355053Kreitman RJ, Tallman MS, Robak T, Coutre S, Wilson WH, Stetler-Stevenson M, FitzGerald DJ, Santiago L, Gao G, Lanasa MC, Pastan I. Minimal residual hairy cell leukemia eradication with moxetumomab pasudotox: phase 1 results and long-term follow-up. Blood. 2018 May 24;131(21):2331-2334. doi: 10.1182/blood-2017-09-803072. Epub 2018 Feb 27.
PubMed 29487070
Study at a glance
From the registry record, last updated by the sponsor on 2 Apr 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase I, Multicenter, Dose Escalation Study of CAT-8015 in Patients With Relapsed or Refractory Hairy Cell Leukemia (HCL)
- ClinicalTrials.gov ID
- NCT00586924
- Acronym / sponsor ID
- CAT-8015-1001
- Conditions
- Hairy Cell Leukemia
- Keywords
- CAT-8015, Moxetumomab pasudotox
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 49 participants (actual)
- Lead sponsor
- MedImmune LLCIndustry (pharma, biotech, devices)
- Collaborators
- Cambridge Antibody Technology
- Study start
- 10 May 2007 (actual)
- Primary completion
- 6 May 2015 (actual)
- Study completion
- 6 May 2015 (actual)
- First posted
- 7 Jan 2008 (estimated)
- Results
- Posted 2 Apr 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
A dose-escalation study to identify the dose-limiting toxicity (DLT) and maximum tolerated dose (MTD), defined as the highest dose that can safely be given to a participant and establish the safest dose based on the highest tolerated dose for clinical testing.
Detailed description
A Phase 1, multicenter, dose escalation study of moxetumomab pasudotox (CAT-8015) in participants with relapsed or refractory hairy cell leukemia (HCL) to estimate the MTD, defined as the highest dose that can be safely administered to a patient, and to establish a safe dose, based on the MTD, for subsequent clinical testing (Phase 2 recommended dose).
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Number of arms
- 6
| Arm | Type | Receives |
|---|---|---|
| 5 mcg/kg | Experimental | Drug: Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 5 microgram per kilogram (mcg/kg) moxetumomab pasudotox (CAT-8015) on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until complete response (CR), progressive disease (PD), initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
| 10 mcg/kg | Experimental | Drug: Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 10 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
| 20 mcg/kg | Experimental | Drug: Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 20 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
| 30 mcg/kg | Experimental | Drug: Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 30 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
| 40 mcg/kg | Experimental | Drug: CAT 8015 (Moxetumomab Pasudotox)Participants received intravenous infusion of 40 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
| 50 mcg/kg | Experimental | Drug: Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 50 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. |
Who may qualify
- Ages
- 18 to 99 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 5 microgram per kilogram (mcg/kg) moxetumomab pasudotox (CAT-8015) on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until complete response (CR), progressive disease (PD), initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 5 mcg/kg |
| Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 10 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 10 mcg/kg |
| Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 20 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 20 mcg/kg |
| Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 30 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 30 mcg/kg |
| CAT 8015 (Moxetumomab Pasudotox)Participants received intravenous infusion of 40 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 40 mcg/kg |
| Moxetumomab Pasudotox (CAT 8015)Participants received intravenous infusion of 50 mcg/kg moxetumomab pasudotox on Days 1, 3, and 5 of every 28-day cycle and continued cycles of therapy until CR, PD, initiation of alternative anticancer therapy, unacceptable toxicity, development of neutralizing antibodies, or another reason to discontinue therapy. | Drug | 50 mcg/kg |
Primary outcome
Number of Participants With Dose Limiting Toxicities (DLTs)
Time frame: Cycle 1 Day 1 to Cycle 2 Day 10 (each cycle duration was 28 days)
Adverse events are suspected of causal relationship to drug and are >=Grade (G) 3 in severity considered DLTs: G 3 or 4 hematologic abnormalities at baseline due to disease were not evaluable for hematologic DLT, G 2 allergic reactions of bronchospasm or urticaria, or any >= G3 allergic reaction, in presence of pre-medication were considered DLTs. Following >= G 3 non-hematological treatment-related toxicities not considered DLTs: Tumor lysis syndrome, G 3 low electrolyte levels with pre-existing low levels of same electrolytes, anticoagulant therapy, G 3 or 4 infection or neutropenic fever unless relationship to IP is suspected, G 3 transaminase, alkaline phosphatase, bilirubin or other liver function test elevation provided resolution to values required for study entry prior to start of next cycle, G 3 fever, G 3 hypertriglyceridemia and hypercholesterolemia, and G 4 hypertriglyceridemia lasting <2 months, G 3 hypoalbuminemia lasting <7 days occurred in absence of CLS.
Number of Participants With Treatment Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
Time frame: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
The TEAEs are defined as adverse events (AEs) present at baseline that worsened in intensity after administration of investigational product or events absent at baseline that emerged after administration of study drug, for the period extending to 30 days after the last dose of study drug. A serious adverse event (SAE) is an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening situation (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly/birth defect in the offspring of a participant who received moxetumomab pasudotox.
Number of Participants With Vital Signs Abnormalities Recorded as Treatment-Emergent Adverse Events (TEAEs)
Time frame: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Vital signs abnormalities reported as TEAEs included pyrexia, weight increased, dyspnoea, hypoxia, hypertension, hypotension.
Number of Participants With Clinically Relevant Electrocardiogram (ECG) Abnormalities Recorded as Adverse Events (AEs)
Time frame: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
Cardiac AEs observed in participants with clinically significant ECG abnormalities included; ECG QT prolonged, Sinus tachycardia and Atrioventricular block first degree.
Number of Participants With Clinically Significant Laboratory Abnormalities Recorded as Treatment-Emergent Adverse Events (TEAEs)
Time frame: From start of study drug administration until 30 days after the last dose of study drug (approximately 8 years)
An abnormal laboratory finding which required an action or intervention by the investigator, or a finding judged by the investigator to represent a change beyond the range of normal physiologic fluctuation were reported as an adverse event.
Number of Participants With Objective Response Rate (ORR): Complete Response (CR) or Partial Response (PR)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Objective response rate defined as proportion of participants with confirmed CR or confirmed PR according to Response Evaluation Criteria for hairy cell leukemia (HCL). A CR is defined as: No evidence of leukemic cells by routine H/E stains of peripheral blood and bone marrow. No hepatomegaly, splenomegaly, or lymphadenopathy by physical examination and/or appropriate radiographic techniques. Normal complete blood count as: Neutrophils >= 1,500/mcL, Platelets >= 100,000/mcL, and Hemoglobin >= 11.0 gm/dL without transfusions or growth factors for at least 4 weeks. Partial response requires all of following: >=50% reduction in peripheral blood lymphocyte from pretreatment baseline value, lymphadenopathy, and abnormal hepatosplenomegaly by CT scan or physical exam, and complete blood count as Neutrophils >= 1,500/mcL, Platelets >=100,000/mcL, and Hemoglobin >= 11.0 g/dL or 50% improvement of all parameters over baseline without transfusions or growth factors for at least 4 weeks.
Number of Participants With Complete Response (CR)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
The CR is defined by: No evidence of leukemic cells by routine H/E stains of the peripheral blood and bone marrow. No hepatomegaly, splenomegaly, or lymphadenopathy by physical examination and/or appropriate radiographic techniques. Normal complete blood count as exhibited by: Neutrophils >= 1,500/microliter (mcL), Platelets >= 100,000/mcL, and Hemoglobin >= 11.0 gram per deciliter (gm/dL) without transfusions or growth factors for at least 4 weeks.
Number of Participants With Partial Response (PR)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Partial response requires all of the following: >=50% decrease in peripheral blood lymphocyte count from the pretreatment baseline value, >=50% reduction in lymphadenopathy, >=50% reduction in abnormal hepatosplenomegaly by computed tomography or physical exam, Neutrophils >= 1,500/mcL or 50% improvement over baseline without growth factors for at least 4 weeks, Platelets >=100,000/mcL or 50% improvement over baseline, and Hemoglobin >= 11.0 g/dL or 50% improvement over baseline without transfusions or growth factors for at least 4 weeks. For participants who are transfusion-dependent at baseline, a hemoglobin of >= 9.0 g/dL without transfusions or growth factors for at least 4 weeks.
Number of Participants With Stable Disease (SD)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Stable disease was characterized by not meeting the criteria for CR, PR or PD.
Number of Participants With Progressive Disease (PD)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Progressive disease is defined by at least one of the following compared to pretreatment:>= 25% increase in the sum of the products of the greatest perpendicular dimensions of at least two lymph nodes on two consecutive examinations at least 2 weeks apart (at least 1 node must be >= 2 cm) or appearance of new palpable lymph nodes, >=25% increase in the size of the liver and/or spleen as determined by measurement below the respective costal margin, or appearance of new palpable hepatomegaly or splenomegaly that was not previously present, >=50% increase in the absolute number of circulating lymphocytes, >=25% decrease in hemoglobin (must be < 11g/dL), platelets (must be < 100,000/mcL), or absolute neutrophil count (must be < 1500/mcL) unless these are judged to be effects of treatment.
Time to Complete Response
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to complete response (CR) was measured from the start of moxetumomab pasudotox treatment to the first documentation of CR and was evaluated only in participants who received any treatment of moxetumomab pasudotox and had achieved a CR. Time to complete response was summarized using Kaplan-Meier estimates (median time, 95% confidence interval [CI] for median time).
Time to Objective Response
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to OR was measured from the start of moxetumomab pasudotox treatment to the first documentation of OR and was evaluated only in participants who received any treatment of moxetumomab pasudotox and had achieved an OR (CR or PR). Objective response (OR) was defined as the participants with confirmed CR or confirmed PR according to Response Evaluation Criteria.
Duration of Complete Response
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Duration of CR was measured from the first documentation of CR to the first documented non-CR and was evaluated in participants who had achieved an CR. Duration of CR were summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Duration of Objective Response
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Duration of response was measured from the first documentation of objective response (OR) to the first documented non-response of SD, PD, or relapse and was only evaluated in participants who had achieved an OR (CR or PR). Duration of OR was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Time to Progression
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
Time to disease progression/relapse is measured from the start of moxetumomab pasudotox treatment until the first documentation of disease progression or relapse and was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Progression-free Survival (PFS)
Time frame: From Baseline (predose of Cycle 1 Day 1) through end of study (until CR, PD, initiation of alternative therapy, unacceptable toxicity, development of neutralizing antibodies, or other study discontinuation reasons) (approximately 8 years)
PFS was measured from the start of moxetumomab pasudotox treatment until the first documentation of disease progression/relapse or death, whichever occurred first. PFS was summarized using Kaplan-Meier estimates (median time, 95% CI for median time).
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Moxetumomab Pasudotox for Cycle 1 on Day 1
Time frame: Cycle 1 Day 1: pre-infusion; at 15 minutes (min) during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 hours (h) post infusion
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
Time to Reach Maximum Observed Plasma Concentration (Tmax) of Moxetumomab Pasudotox for Cycle 1 on Day 5
Time frame: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
Maximum Observed Serum Concentration (Cmax) for Moxetumomab Pasudotox for Cycle 1 on Day 1
Time frame: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
Maximum Observed Serum Concentration (Cmax) for Moxetumomab Pasudotox for Cycle 1 on Day 5
Time frame: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
Area Under the Curve From Time Zero to the Time of Last Quantifiable Concentration (AUC[0-last]) of Moxetumomab Pasudotox for Cycle 1 on Day 1
Time frame: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
Area Under the Curve From Time Zero to the Time of Last Quantifiable Concentration (AUC[0-last]) of Moxetumomab Pasudotox for Cycle 1 on Day 5
Time frame: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
Systemic Clearance (CL) of Moxetumomab Pasudotox for Cycle 1 on Day 1
Time frame: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Systemic Clearance (CL) is a quantitative measure of the rate at which a drug substance is removed from the body. The total systemic clearance after intravenous dose was estimated by dividing the total administered dose by area under plasma concentration-time curve from time zero to infinite time (AUC[0-infinity]).
Systemic Clearance (CL) of Moxetumomab Pasudotox for Cycle 1 on Day 5
Time frame: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
Systemic Clearance (CL) is a quantitative measure of the rate at which a drug substance is removed from the body. The total systemic clearance after intravenous dose was estimated by dividing the total administered dose by AUC(0-infinity).
Terminal Phase Elimination Half Life (t1/2) of Moxetumomab Pasudotox for Cycle 1 on Day 1
Time frame: Cycle 1 Day 1: pre-infusion; at 15 min during the infusion; at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z).
Terminal Phase Elimination Half Life (t1/2) of Moxetumomab Pasudotox for Cycle 1 on Day 5
Time frame: Cycle 1 Day 5: pre infusion; at 15 min during the infusion, at the end of infusion (approximately 5-7 minutes before the end of infusion); and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The elimination half-life (t1/2) is the time measured for the plasma concentration to decrease by 1 half to its original concentration. It is associated with the terminal slope of the semi logarithmic drug concentration-time curve, and is calculated as 0.693/lambda(z).
AUC Accumulation Ratio of Moxetumomab Pasudotox for Cycle 1
Time frame: Cycle 1 Day 1 and Day 5: pre-infusion, at 15 min during the infusion, at the end of infusion, and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The AUC accumulation ratio of moxetumomab pasudotox was calculated as the geometric mean ratio of AUC(0-last) on the last day and the first day of a multiple dose regimen: Day 5/Day 1.
Cmax Accumulation Ratio of Moxetumomab Pasudotox for Cycle 1
Time frame: Cycle 1 Day 1 and Day 5: pre-infusion, at 15 min during the infusion, at the end of infusion, and at 1, 1.5, 2, 4, 8, and 12 h post infusion
The Cmax accumulation ratio of moxetumomab pasudotox was calculated as the geometric mean ratio of Cmax on the last day and the first day of a multiple dose regimen: Day 5/Day 1.
4 secondary outcomes
Number of Participants With Positive Neutralizing Antibodies and Correlation to Antitumor Activity
Time frame: Up to end of treatment (approximately 8 years)
CD22 Expression Levels From Peripheral Blood by Best Response
Time frame: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
CD22 Expression Levels From Bone Marrow by Best Response
Time frame: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
Soluble CD22 Levels by Best Response
Time frame: Prior to enrollment during screening, and for participants still having malignant cells, the test was to be repeated prior to each cycle of therapy, at the end of treatment, and end of the study (approximately 8 years)
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Apr 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Results publication: PubMed 22355053Kreitman RJ, Tallman MS, Robak T, Coutre S, Wilson WH, Stetler-Stevenson M, Fitzgerald DJ, Lechleider R, Pastan I. Phase I trial of anti-CD22 recombinant immunotoxin moxetumomab pasudotox (CAT-8015 or HA22) in patients with hairy cell leukemia. J Clin Oncol. 2012 May 20;30(15):1822-8. doi: 10.1200/JCO.2011.38.1756. Epub 2012 Feb 21.
- Derived from this study: PubMed 29487070Kreitman RJ, Tallman MS, Robak T, Coutre S, Wilson WH, Stetler-Stevenson M, FitzGerald DJ, Santiago L, Gao G, Lanasa MC, Pastan I. Minimal residual hairy cell leukemia eradication with moxetumomab pasudotox: phase 1 results and long-term follow-up. Blood. 2018 May 24;131(21):2331-2334. doi: 10.1182/blood-2017-09-803072. Epub 2018 Feb 27.
Related trials for Hairy Cell Leukemia
RecruitingObservational study
Tissue, Blood, and Body Fluid Sample Collection From Patients With Hematologic Cancer
Chronic Myeloproliferative Disorders, Leukemia
RecruitingObservational study
Collection of Human Samples to Study Hairy Cell and Other Leukemias, and to Develop Recombinant Immunotoxins for Cancer Treatment
Hairy Cell Leukemia (HCL), Chronic Lymphocytic Leukemia (CLL)
Active, not recruitingPhase 1
Cellular Immunotherapy Following Chemotherapy in Treating Patients With Recurrent Non-Hodgkin Lymphomas, Chronic Lymphocytic Leukemia, or B-Cell Prolymphocytic Leukemia
B-Cell Lymphoma, Unclassifiable, With Features Intermediate Between Diffuse Large B-Cell Lymphoma and Classic Hodgkin Lymphoma, B-Cell Prolymphocytic Leukemia
Active, not recruitingObservational study
Infection Prophylaxis and Management in Treating Cytomegalovirus (CMV) Infection in Patients With Hematologic Malignancies Previously Treated With Donor Stem Cell Transplant
Hematopoietic/Lymphoid Cancer, Accelerated Phase Chronic Myelogenous Leukemia
RecruitingPhase 2
Binimetinib for People With Relapsed/Refractory BRAF Wild Type Hairy Cell Leukemia and Variant
Hairy Cell Leukemia
Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
MedImmune LLC study director
MedImmune LLC
4 sites in 2 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Moxetumomab Pasudotox (CAT 8015) and CAT 8015 (Moxetumomab Pasudotox) in people with Hairy Cell Leukemia, run by MedImmune LLC at 4 sites in 2 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Apr 2019. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 4 sites in United States, Poland. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 2 Apr 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Number of Participants With Dose Limiting Toxicities (DLTs) (time frame: Cycle 1 Day 1 to Cycle 2 Day 10 (each cycle duration was 28 days)). The study lists 28 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00586924, which also lists 2 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Apr 2019.