Approval Probability
TA Base Rate
Adjusted LOA
ML Risk
Moxetumomab pasudotox · 2 trials · 2 indications
Durable CR was defined as overall response that meets blood, bone marrow and imaging criteria for CR, followed by a \>180 day duration of hematologic remission (HR). CR requires all of the following to be present: No evidence of leukemic cells in peripheral blood and/or by routine H/E staining of bone marrow; Resolution of any hepatomegaly, splenomegaly, and abnormal (\>= 2 cm minimum length) lymphadenopathy by CT or MRI (maximum diameter of spleen should be either \< 17 cm or have decreased by \>25% from its baseline.); HR requires normal complete blood count (CBC) as exhibited by: Neutrophils \>= 1.5 x 10\^9/L, Platelets \>= 100 x 10\^9/L, and hemoglobin \>= 11.0 g/dL without transfusions or growth factors for at least 4 weeks.
Durable CR was defined as overall response that meets blood, bone marrow and imaging criteria for CR, followed by a \>180 day duration of HR. CR requires all of the following to be present: No evidence of leukemic cells in peripheral blood and/or by routine H/E staining of bone marrow; Resolution of any hepatomegaly, splenomegaly, and abnormal (\>= 2 cm minimum length) lymphadenopathy by CT or MRI (maximum diameter of spleen should be either \< 17 cm or have decreased by \>25% from its baseline.); HR requires normal complete blood count (CBC) as exhibited by: Neutrophils \>= 1.5 x 10\^9/L, Platelets \>= 100 x 10\^9/L, and hemoglobin \>= 11.0 g/dL without transfusions or growth factors for at least 4 weeks.
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.
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.
Vital signs abnormalities reported as TEAEs included pyrexia, weight increased, dyspnoea, hypoxia, hypertension, hypotension.
Cardiac AEs observed in participants with clinically significant ECG abnormalities included; ECG QT prolonged, Sinus tachycardia and Atrioventricular block first degree.
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.
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.
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.
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.
Stable disease was characterized by not meeting the criteria for CR, PR or 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.
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 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 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 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 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).
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).
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
The Tmax is the time to reach maximum observed plasma concentration of Moxetumomab Pasudotox.
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
The Cmax is the maximum observed plasma concentration of Moxetumomab Pasudotox.
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
The AUC (0-last) is the area under the plasma concentration-time curve from time zero to last quantifiable time.
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) 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).
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).
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).
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.
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.
| Arm | Type | Description |
|---|---|---|
| Moxetumomab pasudotox 40 µg/kg | EXPERIMENTAL | Patients will receive Moxetumomab Pasudotox intravenously (IV) over 30 minutes on days 1, 3, 5 of each 28 day cycle for a maximum of 6 cycles or until disease progression, unacceptable toxivity, initiation of alternate therapy or documented CR. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| 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. |
| Name | Type | Description |
|---|---|---|
| Moxetumomab pasudotox | DRUG | - |
| IV Bag Protectant for Moxetumomab pasudotox | DRUG | - |
| 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. |
| 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. |
* INCLUSION CRITERIA: * Patients must have histologically confirmed hairy cell leukemia or hairy cell leukemia variant .with a need for therapy * Patients must be Pseudomonas-immunotoxin naive * Patients must have had at least 2 prior purine analogs, or at least 1 course of purine analog and 1 of ei...
Moxetumomab Pasudotox is an investigational oncology drug being studied for the treatment of hairy cell leukemia, a rare type of blood cancer. It is being developed by AstraZeneca PLC (AZN) and is currently in clinical development, with completed trials in patients with this condition.
Moxetumomab Pasudotox is designed to target CD22, a protein found on the surface of B cells, including malignant B cells in hairy cell leukemia. By binding to CD22, the drug aims to deliver a cytotoxic effect to the cancer cells.
Moxetumomab Pasudotox is being developed by AstraZeneca PLC, a multinational pharmaceutical company listed on the stock exchange under the ticker AZN. The company is conducting clinical trials to evaluate the drug's safety and efficacy in hairy cell leukemia.
Moxetumomab Pasudotox is in Phase 1 clinical development. It has completed a Phase 1 dose escalation study and a Phase 3 study in hairy cell leukemia, but it remains investigational and has not been approved by regulatory authorities.
Moxetumomab Pasudotox has been studied in two completed clinical trials: NCT00586924, a Phase 1 dose escalation study in hairy cell leukemia, and NCT01829711, a Phase 3 study for advanced hairy cell leukemia. Both trials enrolled adult patients and were conducted internationally.
Moxetumomab Pasudotox is also known by the brand name Lumoxiti. It is an investigational drug being developed for hairy cell leukemia, and it has been evaluated in clinical trials under both names.