Bevacizumab is an anti-angiogenic treatment used to treat various solid cancers. Previous studies have shown that this treatment may have adverse effects like hypertension and proteinuria. This is an exploratory study aiming to better understand the relationship between various biomarkers and blood pressure changes and proteinuria measured for 4 to 6 weeks after the first infusion of anti-VEGF therapy with bevacizumab.
Participants will be invited to participate to this research study by their oncologist within 1 to 2 weeks before starting bevacizumab treatment, as part of standard treatment. They will finish the research at the end of the third infusion of bevacizumab. Patients will perform a home blood pressure self-measurement over three days and will collect urine over 24 hours prior to the start of each bevacizumab infusion at cycles 1, 2 and 3. Blood pressure measurements will also be performed during each bevacizumab infusion and blood tests will be performed before each infusion to measure the following biomarkers: * Salt consumption as estimated by 24-hour natriuresis measured before each of the first 3 infusions * 24 hours aldosterone excretion measured before the first and third infusions * plasma methoxylated derivatives measured before the first and third infusions * NTproBNP measured before the first and third infusions * 24 hours urinary free cortisol measured before the first and third infusions * bevacizumab trough concentration measured before the first three bevacizumab infusion
Study Type
OBSERVATIONAL
Enrollment
26
Urine and blood samples
Home blood pressure self-measurement and hospital blood pressure measurement
Medical Oncology Service, University Hospital, Tours
Tours, France
Oncological Gastroenterology Service, University Hospital, Tours
Tours, France
Pneumology, University Hospital, Tours
Tours, France
Home blood pressure measurement
Home blood pressure (systolic, diastolic) before each bevacizumab infusion, as the mean of 3 measures in the morning and 3 measures in the evening, over 3 days
Time frame: before the initiation of bevacizumab and before each bevacizumab infusion, up to 10 weeks
in-hospital blood pressure measurement
Standardized measurement of in-hospital blood pressure (systolic, diastolic) and heart rate during bevacizumab infusion
Time frame: before the initiation of bevacizumab and before each bevacizumab infusion, up to 10 weeks
24-hour proteinuria
Measurement of 24 hours proteinuria
Time frame: before the initiation of bevacizumab and before each bevacizumab infusion, up to 10 weeks
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