Phenotypical Approach of the Drug Metabolizing Hormones Activity Before and After Roux-en Y-Gastric Bypass (SODA)

This study is ongoing, but not recruiting participants.
Sponsor:
Collaborator:
Ministry of Health, France
Information provided by (Responsible Party):
Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier:
NCT01443039
First received: August 19, 2011
Last updated: May 30, 2014
Last verified: May 2014
  Purpose

The activity of drug-metabolizing enzymes and transporters evolutes after Roux-en-Y gastric Bypass.

Primary aim : To study the intra individual evolution of phenotypical markers of different drug metabolizing enzymes and one transporter (CYP1A2, CYP2D6, CYP2C9, CYP2C19, CYP3A4 and P-gp), using a cocktail phenotypic approach, after Roux-en-Y gastric Bypass.


Condition Intervention Phase
Obesity
Drug: phenotypical approach
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Phenotypical Approach of the Drug Metabolizing Hormones Activity (CYP1A2, CYP2D6, CYP2C9, CYP2C19, CYP3A4 and P-gp) Before and After Roux-en Y-Gastric Bypass. The SODA Protocol: Surgery for Obesity and Drug Availability

Resource links provided by NLM:


Further study details as provided by Assistance Publique - Hôpitaux de Paris:

Primary Outcome Measures:
  • Phenotypical markers of enzymes and transporter activity [ Time Frame: at 5-8weeks ] [ Designated as safety issue: No ]
    plasmatic [Paraxanthine/caffeine] ratio (T4H) at 5-8 weeks following surgery. - plasmatic [Omeprazole/5-hydroxyomeprazole] ratio (T4H) at 5-8 weeks following surgery. - urinary Log (dextromethorphan/dextrorphan) (T0-T8h) at 5-8 weeks following surgery. - urinary Losartan/ E-3174 (T0-8h) at 5-8 weeks following surgery. - plasmatic AUC 0-inf midazolam at 5-8 weeks following surgery. - plasmatic AUC 0-inf digoxin at 5-8 weeks following surgery

  • Phenotypical markers of enzymes and transporter activity [ Time Frame: 25-30 weeks ] [ Designated as safety issue: No ]
    plasmatic [Paraxanthine/caffeine] ratio (T4H) at 25-30 weeks following surgery. - plasmatic [Omeprazole/5-hydroxyomeprazole] ratio (T4H) at 25-30 weeks following surgery. - urinary Log (dextromethorphan/dextrorphan) (T0-T8h) at 25-30 weeks following surgery. - urinary Losartan/ E-3174 (T0-8h) at 25-30 weeks following surgery. - plasmatic AUC 0-inf midazolam at 25-30 weeks following surgery. - plasmatic AUC 0-inf digoxin at 25-30 weeks following surgery


Secondary Outcome Measures:
  • Intestinal and hepatic expression and activity of the enzymes and transporter of interest and markers of inflammation [ Time Frame: before surgery ] [ Designated as safety issue: No ]
    Intestinal and hepatic expression and activity of the enzymes and transporter of interest and markers of inflammation


Estimated Enrollment: 10
Study Start Date: September 2011
Estimated Study Completion Date: January 2015
Estimated Primary Completion Date: January 2015 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: phenotypical approach
phenotypical approach
Drug: phenotypical approach
each visit : CAFEINE : (solution orale) 2 ampoules de 2 ml = 100 mg de CAFEINE DEXTROMETHORPHANE : 15 ml de sirop contains 20 mg =>22,5 ml = 30mg Midazolam : (solution injectable, ampoule 1 ml = 1 mg) : deux ampoules = 2 mg Digoxine nativelle (solution injectable, ampoule de 0.5mg) : 1 ampoule per os = 0.5 mg Losartan 50 mg : 1cp de 50mg

Detailed Description:

Principal Judgement criteria :

Phenotypical markers of enzymes and transporter activity before, at 5-8 weeks and 25-30 weeks following surgery.

Secondary judgement criteria :

  • Genetic polymorphisms known to affect expression and/or activity of enzymes and transporter.
  • Intestinal and hepatic expression and activity of the enzymes and transporter of interest.
  • Markers of inflammation Methodology, study design : open-labelled monocentric study.

Sample size : It will be a descriptive experimental study involving 12 subjects.

Study design : In centre 1: Inclusion at least 2 weeks prior to surgery (V0)

In centre 2: Three studies of 12 hours each will occur (in addition with the usual clinical and surgical follow up) at three times periods: in the 8 weeks period before surgery (V1), at 5-8 weeks after surgery (V2) and at 25-30 weeks after surgery (V3).

In centre 3: the patients will undergo gastric bypass surgery (corresponding to the usual clinical and surgical follow up) and samples of jejunum and liver will be obtain during the surgery (J0).

Centres 4 and 5 are involved in samples analysis.Hence, patients will attend 3 visits, in addition to the usual clinical and surgical follow-up.

Study duration: 26 months (with duration of inclusion of 18 months)

Duration for a patient: 38 weeks at maximum (8 months)

Investigating center and participating units: one center enrolling the patients and three centers involving in the others investigations.

  Eligibility

Ages Eligible for Study:   18 Years to 60 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Patients with morbid obesity (IMC > 40 kg/m²) or severe obesity (IMC=35-40 kg/m²) with co morbidities (sleep apnea syndrome or hypertension without treatment or steatosis hepatitis) candidates for a gastric bypass.
  • Patient not receiving more than two treatments whose effect on the expression of enzymes and drug transporters is zero other than vitamins.
  • Patient agreeing to participate at three studies of one day (12 hours) occurring at three different periods.
  • Patients aged between 18 and 60 years old.
  • Patient giving its well-informed and free consent.
  • Patient without allergy to any of the drugs used for test.
  • Patients living in France during the study and with French social security

Exclusion Criteria:

  • Tabacco
  • Contraception including estrogens compounds
  • Medication other than vitamins.
  • Allergy
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01443039

Locations
France
Unit of internal medicine A, Lariboisière Hospital
Paris, France, 75010
Sponsors and Collaborators
Assistance Publique - Hôpitaux de Paris
Ministry of Health, France
Investigators
Principal Investigator: Célia LLORET-LINARES, MD, Assistance Publique - Hôpitaux de Paris
  More Information

No publications provided

Responsible Party: Assistance Publique - Hôpitaux de Paris
ClinicalTrials.gov Identifier: NCT01443039     History of Changes
Other Study ID Numbers: P100506, 2011-A00312-39
Study First Received: August 19, 2011
Last Updated: May 30, 2014
Health Authority: France: Ministry of Health

Keywords provided by Assistance Publique - Hôpitaux de Paris:
drug metabolizing enzymes and drug transporter
Roux-en Y-Gastric Bypass
Obesity
Drug Availability
BMI over 35kg/m² and comorbidities or >40kg/m²

Additional relevant MeSH terms:
Obesity
Overnutrition
Nutrition Disorders
Overweight
Body Weight
Signs and Symptoms

ClinicalTrials.gov processed this record on July 24, 2014