Efficacy and Safety of Pregabalin/Tramadol Combination Versus Pregabalin in Acute Pain of Neuropathic Origin

NCT ID: NCT05324059

Last Updated: 2023-06-15

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE3

Total Enrollment

110 participants

Study Classification

INTERVENTIONAL

Study Start Date

2022-07-11

Study Completion Date

2023-04-25

Brief Summary

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Phase IIIb confirmatory study of efficacy and safety, longitudinal, multicenter, randomized, double-blind study of the combination Pregabalin/Tramadol versus Pregabalin in the management of acute pain of neuropathic origin.

Detailed Description

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Study to evaluate the efficacy and safety of the fixed-dose combination of Pregabalin/Tramadol versus Pregabalin in the management of acute pain of neuropathic origin. Patients who meet the inclusion criteria of the protocol and start treatment with the combination Pregabalin / Tramadol (75 mg / 50 mg) or Pregabalin 75 mg will be included. To evaluate the proportion of subjects who reported a success rate in the reduction of pain by 50%, the percentage of change in the pain intensity reported through the Visual Analog Pain Scale (VAS) will be calculated. This percentage will be categorized and the proportion of patients per treatment group will quantify. Changes in pain intensity during the intervention will be evaluated with the fixed-dose combination of Pregabalin/Tramadol (75 mg / 50 mg) or Pregabalin 75 mg, comparing the average difference in pain reported through VAS at days 1, 3, 5, 7, 10, 13 and 15 with respect to their baseline measurement. The mean change in reported neuropathic pain intensity across the DN4 questionnaire will also be evaluated, comparing its measurement on day 3, 10 and 15 with respect to the baseline, in each treatment group.

At visit 1 (day 3) the need for dose escalation will be evaluated (Pregabalin/Tramadol (150 mg / 50 mg) or pregabalin (150 mg)) in both treatment groups, continuing with its follow-up in the evaluation of the intensity of pain reported by EVA and DN4. The proportion of subjects who started on the dose of Pregabalin / Tramadol (75 mg / 50 mg) or Pregabalin 75 mg, those that required adjustment of dose to treatment (Pregabalin / Tramadol (150 mg / 50 mg) or Pregabalin (75 mg)), as well as the proportion of patients who suspended the treatment.

The percentage of adherence to the intervention by treatment group will be reported.

The proportion of adverse events presented during the conduct of the study will be evaluated, regardless of the dose administered, to all the subjects who have received at least one dose of the investigational drug Which will be reported be reported through frequencies and percentages and classified according to frequency, gravity, severity (intensity) and the causality of the clinical manifestation.

Conditions

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Neuropathic Pain

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

DOUBLE

Participants Investigators

Study Groups

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Group A: Pregabalin/Tramadol

Fixed dose combination tablet of 75 mg Pregabalin and 50 mg of Tramadol, orally, every 12 hours.

Group Type EXPERIMENTAL

Pregabalin 75mg/ Tramadol 50 mg

Intervention Type DRUG

Pharmaceutical Form: Tablet Dosage: 75 mg / 50 mg Administration way: oral

Group B: Pregabalin

Monotherapy with 75 mg of Pregabalin, orally, every 12 hours.

Group Type ACTIVE_COMPARATOR

Pregabalin 75mg

Intervention Type DRUG

Pharmaceutical Form: Capsule Dosage: 75 mg Administration way: oral

Interventions

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Pregabalin 75mg/ Tramadol 50 mg

Pharmaceutical Form: Tablet Dosage: 75 mg / 50 mg Administration way: oral

Intervention Type DRUG

Pregabalin 75mg

Pharmaceutical Form: Capsule Dosage: 75 mg Administration way: oral

Intervention Type DRUG

Other Intervention Names

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LOBUXAL Pregabalin

Eligibility Criteria

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Inclusion Criteria

* Any gender.
* That the subject agrees to participate in the study and give its informed consent in writing.
* Age \>18 years and ≤65 years of age at the start of the study.
* Neuropathic Pain Questionnaire (DN4) ≥ 4.
* Patients with proven tolerability (absence of moderate-serious adverse events) to pregabalin, defined by consumption of pregabalin 50 mg/day for 3 days.
* Women of childbearing age who have an acceptable method of contraception (eg barrier, oral hormonal, injectable, subdermal).

Exclusion Criteria

* Contraindication and known hypersensitivity to the use of pregabalin and/or tramadol.
* The patient is participating in another clinical study involving an investigational treatment or participated in any in the previous 4 weeks.
* In the medical opinion, a disease that affects the prognosis and prevents outpatient management, for example, but not limited or restricted to: terminal cancer, heart failure, obstruction gastrointestinal including paralytic ileus, suspected surgical abdomen, respiratory failure with scheduled surgical or hospital procedures.
* Positive pregnancy test, women who are pregnant, nursing or planning a pregnancy during the conduct of the study.
* Patients with a diagnosis of respiratory diseases: status asthmaticus, asthma, chronic obstructive pulmonary disease (COPD), cor pulmonale, acute respiratory depression, hypercapnia.
* Patients who are receiving monoamine oxidase inhibitors (MAOIs) or who have received within the last 2 weeks.
* Patients with a history of seizure disorders, epileptic status, and grand mal seizures.
* Patients with a history of severe depression of the central nervous system due to consumption of opiates.
* History of acute intoxications with hypnotics, opioid analgesics and psychotropics.
* History of alcohol or drug abuse (including opiates) in the last year according to DSM-V.
* Patients with a history of severe head trauma and/or brain edema.
* History/presence of any disease or condition which, in the opinion of the Investigator, could pose a risk to the patient or confound the efficacy and safety results of the study.
* Patients with symptoms suggestive of active COVID-19 infection (i.e., fever, cough, dyspnea) and/or contact in the last 14 days with a suspected or positive patient for COVID-19.
* Patients whose participation in the study may be influenced (employment relationship with the center investigator or sponsor, inmates, etc.).
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

Yes

Sponsors

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Laboratorios Silanes S.A. de C.V.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Rodrigo Suárez Otero, M.D

Role: PRINCIPAL_INVESTIGATOR

Independent consultant

Isabel E Rucker, M.D

Role: PRINCIPAL_INVESTIGATOR

Clinical Research Institute

Luis R Partida, M.D

Role: PRINCIPAL_INVESTIGATOR

Investigación Biomédica para el Desarrollo de Fármacos S.A. de C.V.

Alfonso Hernández Zepeda, M.D

Role: PRINCIPAL_INVESTIGATOR

IMACEN S.A. de C.V.

Ma. Dolores Alonso Martínez, M.D

Role: PRINCIPAL_INVESTIGATOR

CICMEX, Centro de Investigación Clínica de México S. de R.L de C.V.

Locations

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Laboratorio Silanes, S.A. de C.V.

Mexico City, , Mexico

Site Status

Countries

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Mexico

References

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Taylor RS. Epidemiology of refractory neuropathic pain. Pain Pract. 2006 Mar;6(1):22-6. doi: 10.1111/j.1533-2500.2006.00054.x.

Reference Type BACKGROUND
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Torrance N, Smith BH, Bennett MI, Lee AJ. The epidemiology of chronic pain of predominantly neuropathic origin. Results from a general population survey. J Pain. 2006 Apr;7(4):281-9. doi: 10.1016/j.jpain.2005.11.008.

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Matthiesen T, Wohrmann T, Coogan TP, Uragg H. The experimental toxicology of tramadol: an overview. Toxicol Lett. 1998 Mar 16;95(1):63-71. doi: 10.1016/s0378-4274(98)00023-x.

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Ardakani YH, Rouini MR. Pharmacokinetics of tramadol and its three main metabolites in healthy male and female volunteers. Biopharm Drug Dispos. 2007 Dec;28(9):527-34. doi: 10.1002/bdd.584.

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de Moraes NV, Lauretti GR, Lanchote VL. Effects of type 1 and type 2 diabetes on the pharmacokinetics of tramadol enantiomers in patients with neuropathic pain phenotyped as cytochrome P450 2D6 extensive metabolizers. J Pharm Pharmacol. 2014 Sep;66(9):1222-30. doi: 10.1111/jphp.12255. Epub 2014 Apr 10.

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Bockbrader HN, Radulovic LL, Posvar EL, Strand JC, Alvey CW, Busch JA, Randinitis EJ, Corrigan BW, Haig GM, Boyd RA, Wesche DL. Clinical pharmacokinetics of pregabalin in healthy volunteers. J Clin Pharmacol. 2010 Aug;50(8):941-50. doi: 10.1177/0091270009352087. Epub 2010 Feb 10.

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Chew ML, Plotka A, Alvey CW, Pitman VW, Alebic-Kolbah T, Scavone JM, Bockbrader HN. Pharmacokinetics of pregabalin controlled-release in healthy volunteers: effect of food in five single-dose, randomized, clinical pharmacology studies. Clin Drug Investig. 2014 Sep;34(9):617-26. doi: 10.1007/s40261-014-0211-4.

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Dou Z, Jiang Z, Zhong J. Efficacy and safety of pregabalin in patients with neuropathic cancer pain undergoing morphine therapy. Asia Pac J Clin Oncol. 2017 Apr;13(2):e57-e64. doi: 10.1111/ajco.12311. Epub 2014 Dec 22.

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Onakpoya IJ, Thomas ET, Lee JJ, Goldacre B, Heneghan CJ. Benefits and harms of pregabalin in the management of neuropathic pain: a rapid review and meta-analysis of randomised clinical trials. BMJ Open. 2019 Jan 21;9(1):e023600. doi: 10.1136/bmjopen-2018-023600.

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Related Links

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http://gestoreditorial.resed.es/DOI/PDF/ArticuloDOI_3673.pdf

Rincon Carvajal AM, Olaya Osorio CA, Martínez Rojas S, Ibata Bernal L. Recommendations based on in evidence for the management of neuropathic pain in Primary Health Care (Review of the literature). Rev Soc Esp Pain \[Internet\]. 2018 \[cited 2021 Dec 29\];

http://dof.gob.mx/nota_detalle.php?codigo=5490830&fecha=19/07/2017.

Health Secretary. Official Mexican STANDARD NOM-220-SSA1-2016, Installation and operation of the pharmacovigilance

Other Identifiers

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SIL-30901-III-21 (2)

Identifier Type: -

Identifier Source: org_study_id

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