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Background

Patients with lung cancer continue to smoke owing to complex factors. Failure to quit smoking (defined as nicotine dependence) is significantly associated with genetic status. This study aimed to investigate the relationship between polymorphisms in nicotine dependence genes and smoking status after the diagnosis of lung cancer.

Patients and methods

A total of 240 patients with lung cancer were included from July 2017 to March 2018. According to the actual smoking condition after lung cancer diagnosis, eligible patients were divided into 3 groups: the never-smoking group, the failure to quit smoking group, and the successful smoking cessation group. Fagerstrom Test for Nicotine Dependence scores were used to evaluate the smoking status of each group. Three nicotine-dependent genes with 6 loci were detected.

Results

Among the 240 patients, 86 were never-smokers, 51 failed to quit smoking, and 104 successfully quit smoking. The initial age of smoking in the failure to quit smoking group was significantly younger than those in the successful smoking cessation group (P = .001). There was a significant difference in the GG and AG and AA genotype distributions of CHRNA3 (rs578776) among the 3 groups (P = .003). There was also a significant difference in the distribution of CHRNA4 (rs2229959) genotypes among the 3 groups (P = .003). However, there was no significant difference in the genotype distribution of CHRNA5 (rs588765) among the 3 groups (P = .277).

Conclusions

Gene polymorphisms of CHRNA3 (rs578776) and CHRNA4 (rs1044396 and rs2229959) were associated with the success of smoking cessation after the diagnosis of lung cancer, which should be considered in the management of smoking cessation after patients are diagnosed with lung cancer."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.org/dc/terms/identifier"doi:10.1016/j.cllc.2019.07.002"xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Jiang T."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Li X."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Zhou C."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Zhao C."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Mao Y."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/author"Gu F."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/date"2020"xsd:gYear
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/name"Clin Lung Cancer"xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/pages"171-176"xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/title"Association Between Nicotine-dependent Gene Polymorphism and Smoking Cessation in Patients With Lung Cancer."xsd:string
http://purl.uniprot.org/citations/31402126http://purl.uniprot.org/core/volume"21"xsd:string
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