Expanded Access Study With Peginterferon Alfa-2a (Pegasys) in Participants With Chronic Myelogenous Leukemia (CML)

Study Overview
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Brief Summary
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This study will evaluate the efficacy, safety and tolerability of long-term use of peginterferon alfa-2a in participants with CML who have previously participated in peginterferon alfa-2a study ML16544 (NCT number not available), NO16006 (NCT number not available) or ML17228 (NCT number not available) and treating physician has decided to continue treatment with peginterferon alfa-2a within the frame of another clinical study.

Official Title
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Multicenter Open Label Expanded Access-Program of Pegylated Interferon Alfa-2a (Pegasys) in Patients With Chronic Myelogenous Leukemia (CML)

Conditions
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Myelogenous Leukemia, Chronic

Intervention / Treatment
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* Drug: Peginterferon alfa-2a


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Participants with CML Previous participation in studies: ML16544, NO16006 or ML17228; for which the treating physician recommends a continuation of the study drug according to defined minimal criteria Exclusion Criteria: Major protocol violator in the participated study prior to participation in this study

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Peginterferon alfa-2a<br>Participants will receive peginterferon alfa-2a subcutaneously in doses between 90 and 450 microgram (mcg) once weekly until medically indicated as judged by the treating investigator. | Drug: Peginterferon alfa-2a<br>* Peginterferon alfa-2a in doses between 90 and 450 mcg will be administered subcutaneously once weekly until medically indicated as judged by the treating investigator.<br>* Other names: Pegasys;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Number of Participants With Complete Hematologic Response | Hematologic response was considered to be achieved if participants met all of the following criteria: normalization of white blood cells count to less than (<) 10*10^9 per liter (/L) with normal differentiation, normalization of platelet count at <450*10^9/L, and disappearance of all signs and symptoms of the disease. This response had to be confirmed at least 4 weeks after the first measure and beyond that. | Up to approximately 7 years | 
| Time to Loss of Previous Hematologic Response | Time to loss of previous hematologic response was defined as the interval between the first day of treatment in the study and the first day of loss of previous hematologic response during elapsed time of study. Hematologic response was considered to be achieved if participants met all of the following criteria: normalization of white blood cells count to <10*10^9/L with normal differentiation, normalization of platelet count at <450*10^9/L, and disappearance of all signs and symptoms of the disease. This response had to be confirmed at least 4 weeks after the first measure and beyond that. | Up to approximately 7 years | 
| Number of Participants With Major Cytogenetic Response (CyR) | CyR was based on the prevalence of Philadelphia chromosome-positive (Ph+) bone marrow cells in metaphase determined from reverse transcriptase polymerase chain reaction (RT-PCR). Major cytogenetic response was categorized as either complete cytogenetic response (CCyR) or partial cytogenetic response (PCyR). CCyR was achieved when there was absence of detectable Ph+ bone marrow cells and PCyR was achieved when 1 to 34 percent (%) of bone marrow cells were Ph+. | Up to approximately 7 years | 
| Time to Loss of Previous CyR | Time to loss of previous CyR was defined as the interval between the first day of treatment in the study and the first day of loss of previous CyR. CyR is based on the prevalence of Ph+ bone marrow cells in metaphase. Major CyR was categorized as either CCyR or PCyR. CCyR was achieved when there was absence of detectable Ph+ bone marrow cells and PCyR was achieved when 1 to 34% of bone marrow cells were Ph+. | Up to approximately 7 years | 
| Number of Participants With Molecular Response (MR) | MR was assessed using breakpoint cluster region - Abelson (BCR-ABL) proto-oncogene transcript levels measured by RT-PCR from peripheral blood. Number of participants with BCR-ABL/ABL ratio less than or equal to 10 (%) was reported. | Up to approximately 7 years | 
| Time to Loss of Previous MR | Time to loss of previous MR was defined as the interval between the first day of treatment in the study and the first day of loss of previous MR. MR was assessed using BCR-ABL transcript levels measured by RT-PCR from peripheral blood. | Up to approximately 7 years |