MPN PROGRESSion Registry: Observational Study Tracking Symptoms, Treatments, and Disease Progression in People With Myeloproliferative Neoplasms (MPNs)

The MPN PROGRESSion Registry is a U.S.-based, prospective, observational, non-interventional study designed to track long-term clinical outcomes, treatment patterns, symptoms, quality of life, and disease progression in individuals diagnosed with myeloproliferative neoplasms (MPNs). Eligible subtypes include polycythemia vera (PV), essential thrombocythemia (ET), primary myelofibrosis (MF), secondary MF, pre-fibrotic primary myelofibrosis (pre-PMF), myeloproliferative neoplasm-unclassifiable (MPN-U), MPN in accelerated phase (MPN-AP), MDS/MPN Overlap Syndrome, and MPN in blast phase (MPN-BP), as defined by WHO 2022 criteria, including patients originally diagnosed with one of these conditions but who have received one or more stem cell transplant (SCT)s and/or bone marrow transplant (BMT)s.

The registry integrates multimodal data sources-including structured electronic health record (EHR) extractions, patient-reported outcomes (PROs), medical claims, and potential future linkages with external disease registries-to generate a comprehensive, real-world dataset. This approach supports the identification of factors associated with disease trajectory, treatment response, symptom burden, and healthcare utilization, with the goal of advancing observational research, informing clinical care, and supporting regulatory science.

Participants will be enrolled over a minimum of five years, with many expected to remain in the registry for ten years or longer. An initial run-in phase aims to enroll approximately 1,500 participants to assess operational feasibility, data completeness, retention strategies, and analytic approaches. Over time, the registry will expand to include a broader, more diverse cohort capable of supporting subgroup analyses and capturing rare progression events.

The registry emphasizes patient engagement through structured PRO collection and personalized communications. PROs are collected on a tiered schedule to balance participant burden with scientific value. The MPN-SAF Total Symptom Score (TSS) and PGI-S (Patient Global Impression of Severity) are collected every three months to assess symptom burden and global health status. Every six months, participants also complete additional PROs including the EORTC QLQ-C30 (quality of life), an IRB approved Modified-PHQ-9 (mental health), and PROMIS Fatigue 8a. These PROs are supplemented by EHR refreshes, claims data, and mortality data linkages at the same six-month intervals. Participants receive automated reminders, and support is available from patient navigators. Additional engagement includes study updates, webinars, and optional non-monetary incentives.

Governance is provided by a Steering Committee composed of scientific and clinical experts and a Patient Engagement Advisory Committee (PEAC) that includes patients and caregivers from diverse backgrounds. These bodies provide ongoing oversight, ensure patient-centered governance, and advise on scientific, operational, and ethical matters. The study is approved by a central institutional review board (IRB) and complies with Good Clinical Practice (GCP), HIPAA, and all applicable regulatory standards. Participation does not influence medical care, and all treatment decisions remain solely between patients and their healthcare providers.

The registry operates under a formal quality assurance framework that includes automated and manual data validation, internal monitoring, and regular data audits. Range checks, logic rules, and reconciliation of EHR, PRO, and claims data are used to enhance data completeness and accuracy. Data elements are defined through a structured data dictionary that includes descriptions, formats, allowable ranges, and coding systems (e.g., ICD-10, SNOMED CT, LOINC, MedDRA), which is updated as needed through a documented change control process.

Personally identifiable information (PII) is separated from research data using an Honest Broker model, with encryption, access controls, and full audit trails ensuring data security and participant confidentiality. The registry complies with applicable U.S. privacy regulations, and participants may withdraw consent at any time. Data collected prior to withdrawal may continue to be used unless otherwise requested and feasible.

Statistical analyses will apply descriptive and inferential methods to examine clinical characteristics, symptom burden, treatment patterns, and progression events. Planned analyses may include comparisons across diagnostic subtypes, treatment strategies, demographics, or genetic factors. The formal statistical analysis plan (SAP) will be finalized after initial data review and is expected to evolve based on emerging scientific priorities. At this time, no independent data monitoring committee (DMC) is in place.

Planned exploratory analyses may also include comparisons or potential data harmonization with external resources such as the European LeukemiaNet (ELN) MPN Registry, the Mayo Clinic MPN Database, the Center for International Blood and Marrow Transplant Research (CIBMTR), the Surveillance, Epidemiology, and End Results (SEER) Program, the Harmony Alliance Foundation, and the National Cancer Database (NCDB), contingent on future partnerships and data-sharing agreements.

The real-world evidence (RWE) generated by this registry is intended to support a range of research goals, including understanding natural disease history, identifying risk factors, evaluating patient-reported outcomes over time, and informing the development of biomarkers and surrogate endpoints. Findings may help shape future clinical trial design, therapeutic strategies, and policy guidance. Dissemination will occur through peer-reviewed publications, conference presentations, and participant-facing summaries to ensure transparency and impact across the broader MPN community.

The registry is sponsored and administered by the MPN Research Foundation, a nonprofit organization advancing research and patient advocacy in myeloproliferative neoplasms (MPNs).

Inclusion criteria

• Adults aged 18 years or older at the time of enrollment.
• Confirmed diagnosis of a myeloproliferative neoplasm (MPN), including one or more of the following subtypes, according to WHO 2022 criteria, including patients originally diagnosed with one of these conditions but who have received one or more stem cell transplants (SCTs) or bone marrow transplants (BMTs):
• Polycythemia vera (PV)
• Essential thrombocythemia (ET)
• Primary myelofibrosis (PMF)
• Secondary myelofibrosis (post-ET or post-PV MF)
• Pre-fibrotic primary myelofibrosis (pre-PMF)
• Myeloproliferative neoplasm-unclassifiable (MPN-U)
• Myeloproliferative neoplasm, accelerated phase (MPN-AP)
• Myeloproliferative neoplasm, blast phase (MPN-BP)
• Post-MPN acute myeloid leukemia (AML)
• Myelodysplastic syndrome (MDS)/MPN overlap syndrome
• Myeloproliferative neoplasm, blast phase (MPN-BP)
• Ability to provide informed consent electronically or through a legally authorized representative.
• Willingness to share health information, including electronic health records (EHR), laboratory values, and survey responses.
• Willingness to complete periodic patient-reported outcome (PRO) surveys and symptom tracking assessments.

Exclusion criteria

• Individuals under 18 years of age.
• Inability to provide informed consent, either directly or through a legally authorized representative.
• Currently enrolled in an interventional clinical trial where participation would interfere with the ability to participate in this observational registry (based on investigator or sponsor judgment).
• Any condition that, in the judgment of the study team, would make participation in the registry infeasible or unsafe.