Objectives: To compare the efficacy and safety in children (<18 years) diagnosed as essential thrombocythemia treated with the Pegylated Interferon Alfa-2b vs. Interferon Alfa. Study Design: A prospective, open-label, nonrandomized, single-center clinical trial
Name: Recombinant Interferon Alpha
Name: Pegylated interferon alfa-2b
Description: Proportion of subjects with a platelet count <600×109/L after 3 months of treatment will be evaluated.
Measure: Change in platelet count Time: 3 monthsDescription: To compare the complete hematologic response rates between different treatment groups
Measure: The complete hematologic response rates Time: 3 monthsDescription: Time to response in platelet count (<600×109/L) between different treatment groups
Measure: Time to response in platelet count Time: 3 monthsDescription: To compare the proportion of subjects that display change on key biomarkers of the disease- JAK2V617F, CALR, MPL mutations.
Measure: Impact of therapy on key biomarkers Time: 12 monthsDescription: To estimate incidence of major cardiovascular and thrombotic events (defined as cardiovascular death, myocardial infarction, stroke, transient ischemic attack, pulmonary embolism, Budd Chiari syndrome, deep vein thrombosis, and any other clinically relevant thrombotic event) while on active treatment or observation following end of treatment between different treatment groups
Measure: Incidence of major cardiovascular and thrombotic events Time: 12 monthsDescription: To estimate incidence of development of myelodysplastic disorders, myelofibrosis, or leukemic transformation between different treatment groups
Measure: Incidence of development of myelodysplastic disorders, myelofibrosis, or leukemic transformation. Time: 12 monthsDescription: To compare the proportion of subjects that display change in Myeloproliferative Neoplasm Symptom Assessment Form total symptom score (0-100 scores, higher scores mean a worse outcome) between different treatment groups.
Measure: Change in Myeloproliferative Neoplasm Symptom Assessment Form total symptom score Time: 3 monthsDescription: To compare incidence of specific pre-defined toxicity including fatigue, flu-like symptoms, dizziness, injection site necrosis, dyspnea, pain, depression, blurred Vision, insomnia, anorexia, weight Loss, weakness, pruritis, sweating, fever, decreased Libido, hot Flashes, flushing.
Measure: Specific pre-defined toxicity Time: 12 monthsDescription: To compare the proportion of subjects that display change on bone marrow histopathology
Measure: Impact of therapy on bone marrow histopathology Time: 12 monthsDescription: To compare the proportion of subjects that display change on cytogenetic abnormalities.
Measure: Impact of therapy on cytogenetic abnormalities Time: 12 monthsDescription: To compare the incidence of death while on active treatment or observation following end of treatment
Measure: Death while on active treatment or observation following end of treatment Time: 12 monthsAllocation: Non-Randomized
Parallel Assignment
There is one SNP
- Platelet count ≥ 450 × 109 / L for more than 6 months(If the patient has JAK2 V617F, CALR or MPL gene mutation, the history may be less than 6 months) - Platelet count ≥ 1000 × 109 / L at screening - The guardians has provided written informed consent prior to enrollment Exclusion Criteria: - Known to meet the criteria for primary myelofibrosis or polycythemia vera by 2016 WHO criteria - Presence of any life-threatening co-morbidity - Secondary thrombocytosis - Familial thrombocytosis - Resistance, or intolerance, or any contraindications to interferon - Interferon is used in the past 1 month before enrollment - Patients with previous or present thrombosis or active bleeding - WBC<4× 109 / L - HGB<110g/L - Poor control of thyroid dysfunction - Patients with a prior malignancy within the last 3 years - Patients with severe cardiac or pulmonary dysfunction - Severe renal damage (creatinine clearance < 30 ml / min) - Severe liver dysfunction (ALT or AST > 2.5×ULN) - Patients diagnosed as diabetes with poor control - Patients with hepatitis B virus, hepatitis C virus replication or HIV infection - Patients with a history of drug / alcohol abuse (within 2 years before the study) - Patients that have participated in other experimental researches within one month before enrollment - History of psychiatric disorder - Any other circumstances that the investigator considers that the patient is not suitable to participate in the trial Inclusion Criteria: - <18 years old - Male or Female - Diagnosis of essential thrombocythemia according to the 2016 WHO criteria. --- V617F ---
- Platelet count ≥ 450 × 109 / L for more than 6 months(If the patient has JAK2 V617F, CALR or MPL gene mutation, the history may be less than 6 months) - Platelet count ≥ 1000 × 109 / L at screening - The guardians has provided written informed consent prior to enrollment Exclusion Criteria: - Known to meet the criteria for primary myelofibrosis or polycythemia vera by 2016 WHO criteria - Presence of any life-threatening co-morbidity - Secondary thrombocytosis - Familial thrombocytosis - Resistance, or intolerance, or any contraindications to interferon - Interferon is used in the past 1 month before enrollment - Patients with previous or present thrombosis or active bleeding - WBC<4× 109 / L - HGB<110g/L - Poor control of thyroid dysfunction - Patients with a prior malignancy within the last 3 years - Patients with severe cardiac or pulmonary dysfunction - Severe renal damage (creatinine clearance < 30 ml / min) - Severe liver dysfunction (ALT or AST > 2.5×ULN) - Patients diagnosed as diabetes with poor control - Patients with hepatitis B virus, hepatitis C virus replication or HIV infection - Patients with a history of drug / alcohol abuse (within 2 years before the study) - Patients that have participated in other experimental researches within one month before enrollment - History of psychiatric disorder - Any other circumstances that the investigator considers that the patient is not suitable to participate in the trial Essential Thrombocytopenia Thrombocytopenia Thrombocytosis Thrombocythemia, Essential This is a prospective, open-label, nonrandomized, single-center clinical trial between Interferon Alfa and Pegylated Interferon Alfa-2b in childhood essential thrombocythemia (<18 years). --- V617F ---