Myeloproliferative neoplasms (MPNs) are a group of clonal hematologic malignancies with great variation in reported patient life expectancy and are characterized by a relatively indolent course which can be complicated by thromboembolic events and transformation to acute myeloid leukemia (AML). The MPNs in the 2016 World Health Organization (WHO) classification of myeloid neoplasms consist of polycythemia vera (PV), essential thrombocythemia (ET), primary myelofibrosis (PMF) including prefibrotic/early stage and over fibrotic stage, chronic myeloid leukemia, other (rare) disorders such as chronic neutrophilic leukemia and chronic eosinophilic leukemia and MPN unclassifiable (MPN-U). The prevalence and genetic characteristics of patients with MPNs in Taiwan are still unknown. Molecular tests which are required for the diagnosis of MPNs are not available in many hospitals which hamper the accurate diagnosis and subtype classification of MPNs. Moreover, the information of current therapeutic strategy for MPNs in most medical centers in Taiwan is also not available. The purpose of this MPN registry is to collect clinical data, molecular characteristics, treatment details and response to therapy, occurrence of complications during the course, disease progression to secondary myelofibrosis from PV or ET and secondary AML (sAML) transformation as well as survival. The clinical and molecular data including the high molecular risk (HMR) genes will be examined and correlated with treatment outcomes in Taiwanese MPN patients. The Molecular Diagnostic Laboratory at Chang Gung Memorial Hospital-Linkou is a College of American Pathologists (CAP)-accredited lab which provides high quality of molecular genetic tests for hematologic malignancies. The three driver gene mutations are the major criteria for the diagnosis of MPN, the methodologies of mutational analyses have been well set up for the clinical use in this lab. In addition, this lab is also equipped with facilities for the detection of mutated genes which were recently identified as HRM category (presence of any of ASXL1, EZH2, SRSF2, IDH1 or IDH2), and mutations of other epigenetic regulators or splicing factors.
Study Type
OBSERVATIONAL
Enrollment
500
Chang Gung Memorial Hospital-Linkou
Taoyuan District, State, Taiwan
Epidemiological data of MPNs in Taiwan
The prevalence of MPNs during the whole study period in Taiwan
Time frame: 24 month
The frequencies of mutations of driver genes in Taiwanese patients with MPNs.
The frequencies of JAK2V617F or JAK exon12, CALR and MPL in each subtype of patient's with MPN during the two years of study period.
Time frame: 24 months
Treatment required
Date of phlebotomy and date of initiation of drug therapy
Time frame: 36 months
Change of symptoms from baseline using MPN-10 symptom assessment.
Change of symptoms from baseline in MPN-10 at different time points (V2-5) during the study period.
Time frame: 36 months
Occurrence of vascular events
Date of occurrence of thrombosis or bleeding during the study period.
Time frame: 36 months
Occurrence of secondary acute myeloid leukemia (sAML)
Date of the development of sAML
Time frame: 36 months
Overall survival
Time from diagnosis of MPN to last follow-up or date of death measured by months
Time frame: 36 months
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