Understanding the risks of thrombosis in CALR-mutated MPN patients

Evaluation of the Pathobiology of CALR-mutated MPN Cells

Observational Wake Forest University Health Sciences · NCT06480591

This study is trying to understand why people with CALR mutations in myeloproliferative neoplasms have a different risk of blood clots compared to those with JAK2 mutations by looking at certain blood markers.

Quick facts

Study typeObservational
Enrollment35 (estimated)
Ages18 Years and up
SexAll
SponsorWake Forest University Health Sciences Academic / other
Locations2 sites (Charlotte, North Carolina and 1 other locations)
Trial IDNCT06480591 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the expression levels of TLR 2 and TLR 4 on mononuclear cells in patients with CALR mutation-positive myeloproliferative neoplasms (MPN) and compare these levels to those in patients with JAK2 V617F mutations and healthy controls. Participants will provide blood samples during standard care blood draws, and their demographic and clinical data will be collected. The study seeks to uncover the underlying reasons for the increased risk of thrombosis in patients with JAK2 mutations compared to those with CALR mutations. It will initially be conducted at a single center, the Wake Forest Baptist Comprehensive Cancer Center.

Who should consider this trial

Good fit: Ideal candidates for this study are adults aged 18 and older with a diagnosis of myeloproliferative neoplasm and a CALR-positive genetic mutation.

Not a fit: Patients with MPN who have a JAK2 V617F mutation will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide insights into the mechanisms behind thrombosis risk in MPN patients, potentially leading to improved management strategies.

How similar studies have performed: While this study focuses on CALR mutations, similar studies evaluating the pathobiology of MPNs have shown promising results, suggesting that understanding these mechanisms can lead to better patient outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Written (or electronic) informed consent and HIPAA authorization for release of personal health information by participant or his/her legally authorized representative (LAR).
* Age ≥ 18 years at the time of enrollment
* Diagnosis of myeloproliferative neoplasm (MPN) according to 2022 World Health Organization classification of MDS/MPNs
* CALR-positive genetic mutation

Exclusion Criteria:

\- Diagnosis of MPN with JAK2 V617F mutation

Where this trial is running

Charlotte, North Carolina and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Myeloproliferative NeoplasmThrombosisJAK2 mutationCALR mutation
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.