Acute Myeloid LeukemiaNCT01195506
Study the Novel Functions and Molecular Mechanisms of Vascular Endothelial Growth Factor-C (VEGF-C) in Acute Myeloid Leukemia (AML)
An observational study of Acute Myeloid Leukemia, run by Taipei Medical University WanFang Hospital at 1 site in Taiwan.
Trial summary
Vascular endothelial growth factor (VEGF)-C is recognized as a tumor lymphangiogenic factor based on the effects of activated VEGFR3 on lymphatic endothelial cells. VEGFR3 has been proposed as a specific marker for lymphatic endothelial cells. Read more about this study
- Who is it for?
- Ages 18 to 60 years
- Conditions the study is for
- Acute Myeloid Leukemia
- How many people
- 40 participants
- Where
- 1 siteTaiwan
- Study dates
- Sep 2010to not given
- 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 to 60 years
- All sexes
- No healthy volunteers
- Adult
Study population: patients who were diagnosed acute myeloid leukemia
Who may be able to join
- patients who were diagnosed acute myeloid leukemia
Who cannot join
- patients who were diagnosed other type leukemia
Trial locations and contacts
1 site in 1 country.
About this study
Vascular endothelial growth factor (VEGF)-C is recognized as a tumor lymphangiogenic factor based on the effects of activated VEGFR3 on lymphatic endothelial cells. VEGFR3 has been proposed as a specific marker for lymphatic endothelial cells. Recent studies indicated that VEGFR3 also expressed in a variety of human malignancies, including lung, colon rectal, or head and neck cancer. Moreover, VEGF-C/VEGFR3 axis was demonstrated in regulating angiogenesis, cell invasion, and metastasis in several solid tumors. The promotion of cell mobility in response to VEGF-C was required the involvement of adhesion molecule contactin-1. In addition to solid tumors, it has been reported that the VEGF-C/VEGFR3 axis is activated in subsets of leukemia patients. Until now, it has been demonstrated that higher endogenous VEGFC levels of acute myelogenous leukemia (AML) cells are related to decreased in vitro and in vivo responsiveness to chemotherapy; an effect that may result from inhibition of apoptosis by increasing Bcl-2/Bax ratios by the VEGF-C/VEGFR3 pathway. Thus, a functional VEGF-C/VEGFR3 system may exist in leukemia. However, the detail information concerning the role of VEGF-C/VEGFR3 in non-solid tumors is still lacking. Bone marrow neoangiogenesis plays a crucial pathogenic and possible prognostic role in AML. The VEGF-C/VEGFR3 axis has been proven in the regulation of solid tumors angiogenesis. In the investigators preliminary study, the investigators found VEGF-C may play a critical role in angiogenesis regulation of leukemic cells by upregulating cyclooxygenase-2 (COX-2). Furthermore, the investigators found that the upregulation of COX-2 also correlate with the VEGF-C-induced proliferation in leukemic cells and this phenomenon might further regulate the chemoresistance of VEGF-C. In this study, the investigators will investigate the extent of angiogenesis and chemoresistance induced by VEGF-C in leukemic cells. This study will provide evidences on the subject of the novel role of VEGF-C in leukemia. With progress in molecular biology of VEGF-C, its value as a therapeutic target is highly promising.
- Conditions
- Acute Myeloid Leukemia
- Keywords
- We Will Collect the Bone Marrow Specimens From AML Patients
- Medical subject headings
- Leukemia, Myeloid, Acute
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Sep 2010 (estimated)
- Study startSep 2010
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Acute Myeloid LeukemiaStudies 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
- Observational model
- Case only
- Time perspective
- Retrospective
- Enrolment
- 40 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Taipei Medical University WanFang Hospital
- Sponsor type
- University, hospital or other
- Investigators
- Ming-Hsien Chien, Principal investigator, Taipei Medical University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01195506
- Sponsor's protocol ID
- 99025
- Status last verified
- Oct 2010
- First submitted
- 3 Sep 2010
- Last updated
- 6 Oct 2010
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 6 Oct 2010. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Study the Novel Functions and Molecular Mechanisms of Vascular Endothelial Growth Factor-C (VEGF-C) in Acute Myeloid Leukemia (AML)
- ClinicalTrials.gov ID
- NCT01195506
- Acronym / sponsor ID
- 99025
- Conditions
- Acute Myeloid Leukemia
- Keywords
- We Will Collect the Bone Marrow Specimens From AML Patients
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 40 participants (estimated)
- Lead sponsor
- Taipei Medical University WanFang HospitalUniversity, hospital or other
- Study start
- Sep 2010
- First posted
- 6 Sep 2010 (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.
Vascular endothelial growth factor (VEGF)-C is recognized as a tumor lymphangiogenic factor based on the effects of activated VEGFR3 on lymphatic endothelial cells. VEGFR3 has been proposed as a specific marker for lymphatic endothelial cells. Recent studies indicated that VEGFR3 also expressed in a variety of human malignancies, including lung, colon rectal, or head and neck cancer. Moreover, VEGF-C/VEGFR3 axis was demonstrated in regulating angiogenesis, cell invasion, and metastasis in several solid tumors. The promotion of cell mobility in response to VEGF-C was required the involvement of adhesion molecule contactin-1. In addition to solid tumors, it has been reported that the VEGF-C/VEGFR3 axis is activated in subsets of leukemia patients. Until now, it has been demonstrated that higher endogenous VEGFC levels of acute myelogenous leukemia (AML) cells are related to decreased in vitro and in vivo responsiveness to chemotherapy; an effect that may result from inhibition of apoptosis by increasing Bcl-2/Bax ratios by the VEGF-C/VEGFR3 pathway. Thus, a functional VEGF-C/VEGFR3 system may exist in leukemia. However, the detail information concerning the role of VEGF-C/VEGFR3 in non-solid tumors is still lacking. Bone marrow neoangiogenesis plays a crucial pathogenic and possible prognostic role in AML. The VEGF-C/VEGFR3 axis has been proven in the regulation of solid tumors angiogenesis. In the investigators preliminary study, the investigators found VEGF-C may play a critical role in angiogenesis regulation of leukemic cells by upregulating cyclooxygenase-2 (COX-2). Furthermore, the investigators found that the upregulation of COX-2 also correlate with the VEGF-C-induced proliferation in leukemic cells and this phenomenon might further regulate the chemoresistance of VEGF-C. In this study, the investigators will investigate the extent of angiogenesis and chemoresistance induced by VEGF-C in leukemic cells. This study will provide evidences on the subject of the novel role of VEGF-C in leukemia. With progress in molecular biology of VEGF-C, its value as a therapeutic target is highly promising.
Study design
- Observational model
- Case only
- Time perspective
- Retrospective
Who may qualify
- Ages
- 18 to 60 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult
- Study population
- patients who were diagnosed acute myeloid leukemia
Key inclusion criteria (1 listed)
- patients who were diagnosed acute myeloid leukemia
Key exclusion criteria (1 listed)
- patients who were diagnosed other type leukemia
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
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Oct 2010.
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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.
Ming-Hsien Chien principal investigator
Taipei Medical University
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Acute Myeloid Leukemia, run by Taipei Medical University WanFang Hospital at 1 site in Taiwan.
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 1 inclusion and 1 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: status not confirmed, as of the sponsor's last update on 6 Oct 2010. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Taiwan. 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?
Results are not available in the source record.
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?
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 6 Oct 2010.