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Efficacy of the Use of Genetic Markers in the Choice of the Pharmacological Treatment of Smoking (GENTSMOKING)

NCT03362099 · Status: COMPLETED · Phase: PHASE4 · Type: INTERVENTIONAL · Enrollment: 361

Last updated 2022-12-21

No results posted yet for this study

Summary

Smoking is the leading cause of avoidable death in the world. Smoking is associated with the development of cardiovascular and respiratory diseases, as well as being considered a leading cause of cancer death. Data show that smokers have increased cardiovascular risk in relation to former smokers, even in comparison with individuals who have had a long and intense history tobacco use.

Considering this scenario, some drugs are used in tobacco cessation therapy. The first-line anti-smoking treatments approved by the Food and drug administration ( FDA ) are nicotinic reuptake therapy, bupropion ( norepinephrine and dopamine reuptake inhibitor) and varenicline ( partial agonist of nicotinic receptors composed of subunits alpha4Beta2 ). A metanalysis of 16 clinical studies indicated that smokers treated with bupropion had a higher abstinence rate compared to those receiving placebo - Odds ratio (OR ) - of 1,97 for treatment success.

Varenicline is more effective compared to others smoking cessation drugs approved by the FDA, with an OR of 2,27 ( IC 95% 2,02-2,55 ) compared to placebo. However, Varenicline is much more expensive than bupropion.

Significant advances in genetics have made the variability of the individual response to drugs, as far as efficacy as well as the rate of adverse effects, begin to be specifically investigated through pharmacogenetics studies.

Conditions

  • Smoking Cessation
  • Genetic Predisposition

Interventions

DRUG

Varenicline Tartrate or bupropion

the drug treatment will be chosen related to the polymorphism. If the polymorphism is favorable to varenicline the patient will receive varenicline, If it is favorable to bupropion the patient will receive bupropion, if not favorable to varenicline and bupropion the patient will receive bupropion + varenicline. If the patient has both favorable polymorphisms he will receive bupropion. Bupropiona dosage 150 mg once a day seven days, after twice a day until complete week twelve. Varenicline dosage 0,5 mg once a day for 3 days, after this 0,5 mg twice a day until seven day .At day eight 1 mg twice a day until complete week twelve.

Sponsors & Collaborators

  • Fundação de Amparo à Pesquisa do Estado de São Paulo

    collaborator OTHER_GOV

  • University of Sao Paulo General Hospital

    lead OTHER

Principal Investigators

  • Jaqueline R Scholz, MD.Phd · Heart Institute - University of São Paulo - Braziil

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
18 Years
Max Age
75 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2016-11-01
Primary Completion
2022-04-15
Completion
2022-04-15

Countries

  • Brazil

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT03362099 on ClinicalTrials.gov