PainCLINCYTRAMNCT03357003
Tramadol Clinical Efficiency and Tolerance Correlated to O-desmethyltramadol/Tramadol Ratio (CLINCYTRAM)
An observational study of Pain, run by University Hospital, Caen at 1 site in France.
Trial summary
Tramadol is a grade II analgesics as World Health Organization definition. It can both be an agonist on mu receptors, which provides it a low opioid action, and also be a Serotonin-norepinephrine reuptake inhibitor, which act on neuropathic pain. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pain
- What is being tested?
- Observational study
- How many people
- 400 participants
- Where
- 1 siteFrance
- Study dates
- Dec 2016to Nov 2018
- 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
Study population: Patients suffering from nociceptive pain, combined or not with neuropathic pain, requiring tramadol treatment, grade II analgesics (WHO)
Who may be able to join
- Patients >18 years old treated by tramadol for at least 48h
- Tramadol posology between 100 and 400 mg/d (oral treatment) and until 600 mg/d (veinous treatment), recommended dosage
- Patients with nociceptive pain, definite etiology, combined or not with neuropathic pain
- Caucasian patient
- Patient able to give his/her informed consent
- Patient able to estimate himself/herself pain with pain scale for at least 48h
Who cannot join
- Age < 18 years old
- Patient with chronic pain (>3 month) or not definite
- Tramadol posology >400 mg/d (oral treatment) or > 600 mg/d (veinous treatment)
- Patients with absolute Tramadol contraindication
- Chronic endstage kidney failure antecedent (Cl cockcroft < 10mL/min) and liver failue antecedent
- Concomitant analgesic treatment, except paracetamol or stopped less than 48h ago
- Pregnant or breast-feeding patient
Trial locations and contacts
1 site in 1 country.
Anne Sophie Jossome, MD contact
France1 site, 1 recruiting
- Recruiting
Caen University Hospital
Caen
AS Jossomme, MD
About this study
Official title: Observational Study (and Blood Samples Without Genetics Analysis) Tramadol Clinical Efficiency and Tolerance Correlated to O-desmethyltramadol/Tramadol Ratio (CLINCYTRAM)
Tramadol is a grade II analgesics as World Health Organization definition. It can both be an agonist on mu receptors, which provides it a low opioid action, and also be a Serotonin-norepinephrine reuptake inhibitor, which act on neuropathic pain.
Tramadol is metabolized by P450 2D6 cytochrome (CYP2D6) in O-desmethyltramadol (O-dt) which is the most active form on the pharmacologic side (analgesic effect 2 to 4 times more powerful than tramadol itself).
Read more
In caucasian population, 5 to 10% of patients are genetically qualified as "poor metabolizer phenotype"; this status is correlated to a lower analgesic efficiency compared to "rapid metabolizer".
A multicenter study, CYTRAM, is under publication and allowed measurement of blood ratio O-dT/tramadol as a way to know the phenotype of CYP2D6 to detect "poor metabolizer phenotype" status.
Indeed, blood ratio O-dT/tramadol threshold under 0.1 detects " poor metabolizer phenotype " status for postoperative patients treated by tramadol, with a good sensibility (87,5%) and specificity (83.8%).
Which impacts for current practice? The next step is to know if this blood ratio is linked to an analgesic efficiency and a good tolerance for tramadol. A "poor metabolizer phenotype" patient would have no benefit of tramadol posology increasing. Therefore, phenotype detection, thank to blood ratio, could allow to switch quickly tramadol to another analgesic treatment for "poor metabolizer phenotype" patients.
The main objective of the study is to forge a link between O-dT/tramadol ratio and analgesic efficiency. Secondary objectives investigate side effects and frequency related to O-dT/tramadol ratio and pain relief, and also impact of CYP2D6 - inhibitor treatments on the blood ratio.
If there is a correlation between this blood ratio and treatment efficiency and tolerance, O-dT/tramadol ratio's detection will allow a better adaptation for some treatments metabolized by CYP2D6. Therefore, this evolution will contribute to health quality and health safety improvement.
- Conditions
- Pain
- Being tested
- Observational study
- Medical subject headings
- Pain
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Observational studyOther
Comparison between O-desmethyltramadol/tramadol ratio and tramadol clinical efficiency and tolerance
What is being measured
The primary outcome is the main question the study is designed to answer.
Ratio measurement : O-desmethyltramadol blood concentration/ tramadol blood concentration
Measured: at 48 hours
visual analogic pain scale (1 to 10)
Measured: at 48 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted29 Nov 2017
- Study startDec 2016
- Primary completionMay 2018 (estimated)
- Study completionNov 2018 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for PainStudies of the same condition, open and under way.
- More trials run by University Hospital, CaenThe sponsor's other registered studies.
- 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
- Cohort
- Time perspective
- Prospective
- Enrolment
- 400 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University Hospital, Caen
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03357003
- Sponsor's protocol ID
- CaenUH
- Acronym
- CLINCYTRAM
- Status last verified
- Nov 2017
- First submitted
- 7 Mar 2017
- Last updated
- 29 Nov 2017
- Results posted
- No
Study at a glance
From the registry record, last updated by the sponsor on 29 Nov 2017. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Observational Study (and Blood Samples Without Genetics Analysis) Tramadol Clinical Efficiency and Tolerance Correlated to O-desmethyltramadol/Tramadol Ratio (CLINCYTRAM)
- ClinicalTrials.gov ID
- NCT03357003
- Acronym / sponsor ID
- CLINCYTRAM / CaenUH
- Conditions
- Pain
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 400 participants (estimated)
- Lead sponsor
- University Hospital, CaenUniversity, hospital or other
- Study start
- Dec 2016 (actual)
- Primary completion
- May 2018 (estimated)
- Study completion
- Nov 2018 (estimated)
- First posted
- 29 Nov 2017 (actual)
- 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.
Tramadol is a grade II analgesics as World Health Organization definition. It can both be an agonist on mu receptors, which provides it a low opioid action, and also be a Serotonin-norepinephrine reuptake inhibitor, which act on neuropathic pain.
Tramadol is metabolized by P450 2D6 cytochrome (CYP2D6) in O-desmethyltramadol (O-dt) which is the most active form on the pharmacologic side (analgesic effect 2 to 4 times more powerful than tramadol itself).
In caucasian population, 5 to 10% of patients are genetically qualified as "poor metabolizer phenotype"; this status is correlated to a lower analgesic efficiency compared to "rapid metabolizer".
A multicenter study, CYTRAM, is under publication and allowed measurement of blood ratio O-dT/tramadol as a way to know the phenotype of CYP2D6 to detect "poor metabolizer phenotype" status.
Indeed, blood ratio O-dT/tramadol threshold under 0.1 detects " poor metabolizer phenotype " status for postoperative patients treated by tramadol, with a good sensibility (87,5%) and specificity (83.8%).
Which impacts for current practice? The next step is to know if this blood ratio is linked to an analgesic efficiency and a good tolerance for tramadol. A "poor metabolizer phenotype" patient would have no benefit of tramadol posology increasing. Therefore, phenotype detection, thank to blood ratio, could allow to switch quickly tramadol to another analgesic treatment for "poor metabolizer phenotype" patients.
The main objective of the study is to forge a link between O-dT/tramadol ratio and analgesic efficiency. Secondary objectives investigate side effects and frequency related to O-dT/tramadol ratio and pain relief, and also impact of CYP2D6 - inhibitor treatments on the blood ratio.
If there is a correlation between this blood ratio and treatment efficiency and tolerance, O-dT/tramadol ratio's detection will allow a better adaptation for some treatments metabolized by CYP2D6. Therefore, this evolution will contribute to health quality and health safety improvement.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Patients suffering from nociceptive pain, combined or not with neuropathic pain, requiring tramadol treatment, grade II analgesics (WHO)
Key inclusion criteria (6 listed)
- Patients >18 years old treated by tramadol for at least 48h
- Tramadol posology between 100 and 400 mg/d (oral treatment) and until 600 mg/d (veinous treatment), recommended dosage
- Patients with nociceptive pain, definite etiology, combined or not with neuropathic pain
- Caucasian patient
- Patient able to give his/her informed consent
Key exclusion criteria (7 listed)
- Age < 18 years old
- Patient with chronic pain (>3 month) or not definite
- Tramadol posology >400 mg/d (oral treatment) or > 600 mg/d (veinous treatment)
- Patients with absolute Tramadol contraindication
- Chronic endstage kidney failure antecedent (Cl cockcroft < 10mL/min) and liver failue antecedent
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Observational studyComparison between O-desmethyltramadol/tramadol ratio and tramadol clinical efficiency and tolerance | Other | – |
Primary outcome
Ratio measurement : O-desmethyltramadol blood concentration/ tramadol blood concentration
Time frame: at 48 hours
visual analogic pain scale (1 to 10)
Time frame: at 48 hours
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 29 Nov 2017.
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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.
Anne Sophie Jossome, MD contact
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 Pain, run by University Hospital, Caen at 1 site in France.
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 6 inclusion and 7 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 29 Nov 2017. 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 France. 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?
Contact Anne Sophie Jossome, MD (02 31 06 31 06), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Ratio measurement : O-desmethyltramadol blood concentration/ tramadol blood concentration (time frame: at 48 hours). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.
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 29 Nov 2017.