This pilot phase II trial studies P1101 (polyethyleneglycol \[PEG\]-proline-interferon alpha-2b) in treating patients with myelofibrosis. PEG-proline-interferon alpha-2b is a substance that can improve the body's natural response and may slow the growth of myelofibrosis.
PRIMARY OBJECTIVE: I. To evaluate for clinical response (complete remission \[CR\], partial remission \[PR\], or clinical improvement \[CI\]) as defined by International Working Group-Myeloproliferative Neoplasms Research and Treatment (IWG-MRT) criteria in a cohort of intermediate-2/high risk myelofibrosis (MF) patients. Response in a second cohort of early stage MF patients will also be described. SECONDARY OBJECTIVES: I. To evaluate the adverse event profile of P1101 in patients with myelofibrosis by cohort (early vs intermediate-2/high risk). II. To evaluate the tolerability of P1101 in patients with myelofibrosis by cohort (early vs intermediate-2/high risk). EXPLORATORY AND CORRELATIVE RESEARCH OBJECTIVES: I. To evaluate quality of life (QOL) and patient-reported symptoms using the Myeloproliferative Neoplasm Symptom Assessment Form (MPN-SAF) with P1101 for patients with myelofibrosis by cohort (early vs intermediate-2/high risk). II. To evaluate the impact of P1101 on bone marrow and histological features of myelofibrosis including cytogenetics, blast percentage, fibrosis, and JAK2-V617F allele burden by cohort (early vs intermediate-2/high risk). OUTLINE: Patients receive PEG-proline-interferon alpha-2b subcutaneously (SC) on days 1 and 15. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3-6 months for 3 years.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
11
Mayo Clinic in Arizona
Scottsdale, Arizona, United States
Best Overall Response (Complete Remission, Partial Remission, or Clinical Improvement) as Determined by International Working Group Criteria
Patients will be assessed for response according to the Revised International Working Group for Myeloproliferative Neoplasms Research and Treatment criteria.
Time frame: Up to 3 years
Progression-free Survival Time
The distribution of survival time will be estimated using the method of Kaplan-Meier.
Time frame: Up to 3 years
Number of Patients Experiencing a Grade 3+ Adverse Event, as Measured by National Cancer Institute Common Terminology Criteria for Adverse Events Version 4.0 (NCI CTCAE v4)
The maximum grade for each type of adverse event will be recorded for each patient, and frequency tables will be reviewed to determine patterns. Additionally, the relationship of the adverse event(s) to the study treatment will be taken into consideration.
Time frame: Up to 3 years
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