Specificity of Elevated Plasma EM66 Levels in Pheochromocytoma
PHEO
Clinical Application of New Pheochromocytoma Markers: INSERM Pilot Study of the Specificity of Elevated Plasma EM66 Concentrations in Patients With Pheochromocytoma or Paraganglioma Compared to Patients With Essential Hypertension
2 other identifiers
interventional
60
1 country
8
Brief Summary
Pheochromocytoma or paraganglioma are tumors generating hypertension as a symptom. Different biological tests are currently available to diagnose these tumors. However, they all lack specificity since they do not distinguish cases of hypertension without pheochromocytoma or paraganglioma. To improve the diagnostic specificity of these tumors, the investigators are testing a new marker called EM66.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P25-P50 for not_applicable
Started Nov 2008
Longer than P75 for not_applicable
8 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
Study Start
First participant enrolled
November 1, 2008
CompletedFirst Submitted
Initial submission to the registry
November 17, 2009
CompletedFirst Posted
Study publicly available on registry
December 1, 2009
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 13, 2022
CompletedStudy Completion
Last participant's last visit for all outcomes
April 13, 2022
CompletedFebruary 6, 2026
June 1, 2014
13.5 years
November 17, 2009
February 4, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Plasma EM66
two years
Secondary Outcomes (1)
Plasma Chromogranin A levels
before treatement
Study Arms (2)
patients with pheochromocytoma
OTHERPatients with pheochromocytoma / paraganglioma are being followed as recommended according to international standards. No intervention is expected except regular measurement of plasma CgA (as usual) and EM66 (research purpose) levels.
Patients with essential hypertension
OTHERPatients with essential hypertension will be selected as controls. EM66 and CgA plasma levels will be assessed in these patients after having excluded the presence of a pheochromocytoma / paraganglioma with normal urinary metanephrines / normetanephrines excretion levels.
Interventions
Patients with pheochromocytoma / paraganglioma will be followed-up as the international standards recommend. Regularly, blood samples will be drawn for the usual assessment of CgA levels and also EM66 (research purpose) levels.
After inclusion checking to eliminate the presence of pheochromocytoma / paraganglioma, a blood sample will be drawn to assess plasma EM66 and CgA levels.
Eligibility Criteria
You may qualify if:
- men \& women, age \> 18 years old
- Patients informed and willing to participate in the study
- Patients newly diagnosed, recently operated and the histological findings disprove pheochromocytoma or paraganglioma.
- patient imprisoned or under legal protection.
- men \& women, age \> 18 years old
- paired with a patient with pheochromocytoma/paraganglioma for : gender, age (± 5 years) and centre
- patient with hypertension. No aetiology was found after initial check up.
- Normal 24 hours urinary excretion of metanephrines \& normetanephrines
- For women of childbearing potential : effective contraceptive method and negative urinary pregnancy test
- Patients informed and willing to participate in the study
- Treatment with beta-blockers, antidepressants, Benzodiazepins, dopa, alphamethyl dopa, if this treatment cannot be interrupted during the study (i.e. for approximately 10 days)
- patient imprisoned or under legal protection.
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (8)
CIC 9301
Lille, 59000, France
Endocrinology Department
Lille, 59000, France
Inserm U982/EA 4310; Rouen University (DC2N)
Mont-Saint-Aignan, 76800, France
Cardiology Department
Paris, 75012, France
CIC 9304
Paris, 75012, France
Cic-Crb 0204
Rouen, 76000, France
Endocrinology Department
Rouen, 76000, France
Endocrinology Department, Gustave-Roussy Institute
Villejuif, 94000, France
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Study Officials
- PRINCIPAL INVESTIGATOR
Anne F Cailleux, MD
University Hospital, Rouen
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- DIAGNOSTIC
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 17, 2009
First Posted
December 1, 2009
Study Start
November 1, 2008
Primary Completion
April 13, 2022
Study Completion
April 13, 2022
Last Updated
February 6, 2026
Record last verified: 2014-06