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Lung cancer in the older population:Interactive effects of angiotensin converting enzyme gene polymorphism (rs 4340 ID) and tobacco addiction in risk assessment
Joyita Banerjee1, Abhishek Gupta2, Vertica Agnihotri2, Rashmita Pradhan1, Ramesh Kandel1, Ashish D Upadhyay2, Sadanand Dwivedi2, Lalit Kumar3, Sharmistha Dey2, Aparajit B Dey1
1 Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi, India
2 Department of Biophysics, All India Institute of Medical Sciences, New Delhi, India
3 Department of Medical Oncology, All India Institute of Medical Sciences, New Delhi, India
Correspondence Address:
Aparajit B Dey,
Department of Geriatric Medicine, All India Institute of Medical Sciences, New Delhi
India
Sharmistha Dey,
Department of Biophysics, All India Institute of Medical Sciences, New Delhi
India
 Source of Support: None, Conflict of Interest: None DOI: 10.4103/ijc.IJC_1082_19
Background: rs4340ID polymorphism of angiotensin-converting enzyme (ACE) correlates with serum ACE levels in many known cancers. This study analyzed ACE rs4340 ID polymorphism in lung cancer (LC) in older patients of North India and correlated it with addiction status.
Methods: The study enrolled all subjects aged 60 years and above with 154 LC and 205 healthy controls. Genotyping was done by polymerase chain reaction (PCR) and validated by sequencing of 10% of the sample. Statistical analysis was done by SPSS Statistics 21.
Results: Genotype II was observed to have a significant 2.21-fold increased risk of LC as compared to the DD genotype and 3.43-folds enhanced risk with interaction of I allele with tobacco consumption habits as compared to D allele in LC was seen.
Conclusion: The risk of LC was higher with II genotype as compared to DD genotype. Interactive effect showed that I allele with tobacco habits may increase the risk of LC.
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