Polycythemia VeraNCT00433862
Molecular Changes and Biomarkers in Chronic Myeloproliferative Disorders
An observational study of Polycythemia Vera and Essential Thrombocytosis, run by National Institutes of Health Clinical Center (CC) at 2 sites in United States.
Trial summary
The three main chronic myeloproliferative disorders are polycythemia vera (PV), essential thrombocythemia (ET) and idiopathic myelofibrosis (IMF). These are clonal neoplastic diseases characterized by proliferation of one or more hematopoietic lineages. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis
- How many people
- 8 participants
- Where
- 2 sitesUnited States
- Study dates
- 6 Feb 2007to 19 May 2010
- Phase
- Observational
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Diagnosis or suspected diagnosis of PV, ET, or IMF. The World Health Organization Criteria will be used for diagnosing this disorder. In brief, the criteria for PV is hemoglobin greater than 18.5 g/dL in men and greater than 16.5 g/dL in women and splenomegaly on palpation in the absence of secondary erythrocytosis. If splenomegaly is absent, the patient must have 2 of the following 4 minor criteria: platelet count greater than 400 x 10(9)/L, leukocyte count greater than 12 x 10(9)/L, marrow biopsy with trilineage increase in cellularity, and low serum erythropoietin level. The criteria for EF is a platelet count greater than 600 x 10(9)/L with no known cause of reactive thrombocytosis and a normal hemoglobin. The criteria for IMF is fibrosis of the bone marrow and splenomegaly without preceding PV, ET or chronic myelogenous leukemia.
- Both male and female subjects will be studied.
- Any ethnic group.
- 18 years of age or older.
Who cannot join
- Subjects will be excluded if they have any of the following conditions:
- Increased blood counts due to a disease other than chronic myeloproliferation.
- Know history of anemia (hematocrit less than 12.0 mg/dL).
- Pregnancy.
- Infection with HIV, hepatitis B, or hepatitis C.
Trial locations and contacts
2 sites in 1 country.
United States2 sites
National Institutes of Health Clinical Center, 9000 Rockville Pike
Bethesda, Maryland, 20892
VA Medical Center, Washington D.C.
Washington D.C., District of Columbia, 20422
About this study
The three main chronic myeloproliferative disorders are polycythemia vera (PV), essential thrombocythemia (ET) and idiopathic myelofibrosis (IMF). These are clonal neoplastic diseases characterized by proliferation of one or more hematopoietic lineages. Recently a mutation of the Janus Kinase 2 (JAK2) gene that leads to the substitution of phenylalanine for valine at position 617 of the JAK2 protein, JAK2 V617F, has been found in 76% to 97% of patients with PV, 29% to 57% of patients with ET and 50% of patients with IMF. This mutation confers constitutive activity on to the JAK2 protein and appears to play an important role in the pathobiology of these conditions. However, not all patients with myeloproliferative disorders have this mutation and it may not be the primary cause of these diseases. The primary goal of this prospective natural history study is to investigate the molecular basis of these diseases in groups of patients who have JAK2 V617F and in those who do not. A second goal is to identify biomarkers for PV and the other myeloproliferative disorders that are easier to measure than JAK2 V617F. Approximately, 150 patients with myeloproliferative disorders will be studied over 3 years. The studies will involve the collection of 40 mL to 50 mL of peripheral blood from each subject. The blood will be used to assess neutrophil gene and protein expression, gene polymorphisms, and plasma protein levels.
Read the detailed description
The three main chronic myeloproliferative disorders are polycythemia vera (PV), essential thrombocythemia (ET) and idiopathic myelofibrosis (IMF). These are clonal neoplastic diseases characterized by proliferation of one or more hematopoietic lineages. Recently a mutation of the Janus Kinase 2 (JAK2) gene that leads to the substitution of phenylalanine for valine at position 617 of the JAK2 protein, JAK2 V617F, has been found in 76% to 97% of patients with PV, 29% to 57% of patients with ET and 50% of patients with IMF. This mutation confers constitutive activity on to the JAK2 protein and appears to play an important role in the pathobiology of these conditions. However, not all patients with myeloproliferative disorders have this mutation and it may not be the primary cause of these diseases. The primary goal of this prospective natural history study is to investigate the molecular basis of these diseases in groups of patients who have JAK2 V617F and in those who do not. A second goal is to identify biomarkers for PV and the other myeloproliferative disorders that are easier to measure than JAK2 V617F. Approximately, 150 patients with myeloproliferative disorders will be studied over 3 years. The studies will involve the collection of 40 mL to 50 mL of peripheral blood from each subject. The blood will be used to assess neutrophil gene and protein expression, gene polymorphisms, and plasma protein levels.
- Conditions
- Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis, Neutrophils, Chronic Myeloproliferative Disorders
- Keywords
- Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis, Janus Kinase 2, CD177, Chronic Myeloproliferative Disorders, PV, Essential Thrombocythemia, ET, IM
- Medical subject headings
- Polycythemia Vera, Thrombocythemia, Essential, Primary Myelofibrosis, Myeloproliferative Disorders
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Feb 2007 (estimated)
- Study start6 Feb 2007
- Study completion19 May 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (3)Papers the sponsor has linked to this study.
- Other trials for Polycythemia VeraStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Time perspective
- Prospective
- Enrolment
- 8 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Institutes of Health Clinical Center (CC)
- Sponsor type
- US National Institutes of Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00433862
- Sponsor's protocol ID
- 070090
- Other IDs
- 07-CC-0090
- Status last verified
- 19 May 2010
- First submitted
- 9 Feb 2007
- Last updated
- 2 Jul 2017
- Results posted
- No
Publications
DAMESHEK W. Some speculations on the myeloproliferative syndromes. Blood. 1951 Apr;6(4):372-5. No abstract available.
PubMed 14820991Spivak JL. Polycythemia vera: myths, mechanisms, and management. Blood. 2002 Dec 15;100(13):4272-90. doi: 10.1182/blood-2001-12-0349. Epub 2002 Aug 8. No abstract available.
PubMed 12393615el-Kassar N, Hetet G, Briere J, Grandchamp B. Clonality analysis of hematopoiesis in essential thrombocythemia: advantages of studying T lymphocytes and platelets. Blood. 1997 Jan 1;89(1):128-34.
PubMed 8978285
Study at a glance
From the registry record, last updated by the sponsor on 2 Jul 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Molecular Changes and Biomarkers in Chronic Myeloproliferative Disorders
- ClinicalTrials.gov ID
- NCT00433862
- Acronym / sponsor ID
- 070090
- Conditions
- Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis, Neutrophils, Chronic Myeloproliferative Disorders
- Keywords
- Polycythemia Vera, Essential Thrombocytosis, Idiopathic Myelofibrosis, Janus Kinase 2, CD177, Chronic Myeloproliferative Disorders, PV, Essential Thrombocythemia
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 8 participants (actual)
- Lead sponsor
- National Institutes of Health Clinical Center (CC)US National Institutes of Health
- Study start
- 6 Feb 2007
- Study completion
- 19 May 2010
- First posted
- 12 Feb 2007 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The three main chronic myeloproliferative disorders are polycythemia vera (PV), essential thrombocythemia (ET) and idiopathic myelofibrosis (IMF). These are clonal neoplastic diseases characterized by proliferation of one or more hematopoietic lineages. Recently a mutation of the Janus Kinase 2 (JAK2) gene that leads to the substitution of phenylalanine for valine at position 617 of the JAK2 protein, JAK2 V617F, has been found in 76% to 97% of patients with PV, 29% to 57% of patients with ET and 50% of patients with IMF. This mutation confers constitutive activity on to the JAK2 protein and appears to play an important role in the pathobiology of these conditions. However, not all patients with myeloproliferative disorders have this mutation and it may not be the primary cause of these diseases. The primary goal of this prospective natural history study is to investigate the molecular basis of these diseases in groups of patients who have JAK2 V617F and in those who do not. A second goal is to identify biomarkers for PV and the other myeloproliferative disorders that are easier to measure than JAK2 V617F. Approximately, 150 patients with myeloproliferative disorders will be studied over 3 years. The studies will involve the collection of 40 mL to 50 mL of peripheral blood from each subject. The blood will be used to assess neutrophil gene and protein expression, gene polymorphisms, and plasma protein levels.
Detailed description
The three main chronic myeloproliferative disorders are polycythemia vera (PV), essential thrombocythemia (ET) and idiopathic myelofibrosis (IMF). These are clonal neoplastic diseases characterized by proliferation of one or more hematopoietic lineages. Recently a mutation of the Janus Kinase 2 (JAK2) gene that leads to the substitution of phenylalanine for valine at position 617 of the JAK2 protein, JAK2 V617F, has been found in 76% to 97% of patients with PV, 29% to 57% of patients with ET and 50% of patients with IMF. This mutation confers constitutive activity on to the JAK2 protein and appears to play an important role in the pathobiology of these conditions. However, not all patients with myeloproliferative disorders have this mutation and it may not be the primary cause of these diseases. The primary goal of this prospective natural history study is to investigate the molecular basis of these diseases in groups of patients who have JAK2 V617F and in those who do not. A second goal is to identify biomarkers for PV and the other myeloproliferative disorders that are easier to measure than JAK2 V617F. Approximately, 150 patients with myeloproliferative disorders will be studied over 3 years. The studies will involve the collection of 40 mL to 50 mL of peripheral blood from each subject. The blood will be used to assess neutrophil gene and protein expression, gene polymorphisms, and plasma protein levels.
Study design
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
Key exclusion criteria (5 listed)
- Increased blood counts due to a disease other than chronic myeloproliferation.
- Know history of anemia (hematocrit less than 12.0 mg/dL).
- Pregnancy.
- Infection with HIV, hepatitis B, or hepatitis C.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Not reported in the source record.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 2 Jul 2017.
- Background: PubMed 14820991DAMESHEK W. Some speculations on the myeloproliferative syndromes. Blood. 1951 Apr;6(4):372-5. No abstract available.
- Background: PubMed 12393615Spivak JL. Polycythemia vera: myths, mechanisms, and management. Blood. 2002 Dec 15;100(13):4272-90. doi: 10.1182/blood-2001-12-0349. Epub 2002 Aug 8. No abstract available.
- Background: PubMed 8978285el-Kassar N, Hetet G, Briere J, Grandchamp B. Clonality analysis of hematopoiesis in essential thrombocythemia: advantages of studying T lymphocytes and platelets. Blood. 1997 Jan 1;89(1):128-34.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Polycythemia Vera and Essential Thrombocytosis, run by National Institutes of Health Clinical Center (CC) at 2 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 5 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 2 Jul 2017. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT00433862, which also lists 3 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 2 Jul 2017.