BMJ  2004;328:989-990 (24 April), doi:10.1136/bmj.38050.674826.AE (published 19 March 2004)

Paper

Effectiveness of nicotine patches in relation to genotype in women versus men: randomised controlled trial

Patricia Yudkin, reader1, Marcus Munafò, research fellow2, Kate Hey, research officer2, Sarah Roberts, research nurse2, Sarah Welch, research nurse2, Elaine Johnstone, research fellow2, Michael Murphy, director2, Siân Griffiths, scientific officer2, Robert Walton, senior research fellow2

1 Department of Primary Health Care, University of Oxford, Oxford OX3 7LF, 2 Cancer Research UK General Practice Research Group, Department of Clinical Pharmacology, University of Oxford, Radcliffe Infirmary, Oxford OX2 6HE

Correspondence to: P Yudkin pat.yudkin@dphpc.ox.ac.uk

The first 150 words of the full text of this article appear below.

Introduction

The overall effectiveness of nicotine replacement therapy could be greater if the therapy were targeted at those most likely to respond. Variants of the dopamine D2 receptor (DRD2 32806 C/T) have been implicated in the initiation and maintenance of smoking,1 2 and these variants may also be related to response to nicotine replacement therapy.3 Additionally, mechanisms of nicotine addiction may differ in men and women.4 With this evidence in mind, we examined whether the response to nicotine replacement therapy is modified by sex and genotype.

Participants, methods, and results

A randomised controlled trial of nicotine patches in 1991-2 recruited 1686 heavy smokers (>= 15 cigarettes a day).5 The participants wore patches for 12 weeks. Abstinence from smoking was confirmed at one week by expired carbon monoxide concentration <= 10 ppm, and at 12, 24, and 52 weeks by salivary cotinine concentration <= 20 ng/ml (89% of cases) or by expired carbon monoxide concentration <= 10 ppm.

In . . . [Full text of this article]

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