alexa Biological and Clinical Implications of Functional Promoter Polymorphism of CASPASE 9 Gene in Non Small Cell Lung Cancer Patients | OMICS International | Abstract

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Research Article

Biological and Clinical Implications of Functional Promoter Polymorphism of CASPASE 9 Gene in Non Small Cell Lung Cancer Patients

Jamsheed Javid1, Rashid Mir1, Masroor M1, Shazia Farooq1, Imtiyaz Ahamad1, Mariyam Zuberi1, Prasant Yadav1, AA Bhat2, Ishfaq Ah Sheikh3, Tanveer Ah Khatlani3, Julka PK4, Anant Mohan5, Maqbool Lone6, Ray PC1 and Alpana Saxena1*

1Cancer Genetics Lab, Department of Biochemistry, Maulana Azad Medical College and Associated hospitals, New Delhi, India

2Division of Surgical Oncology, Vanderbilt University, Nashville, TN, USA

3King Fahd Medical Research Center, King Abdulaziz University, Kingdom of Saudi Arabia

4Department of Radiotherapy, All India Institute of Medical Sciences, New Delhi, India

5Department of Medicine, All India Institute of Medical Sciences, New Delhi, India

6Department of Radiation Oncology, SKIMS, Srinagar, India

*Corresponding Author:
Alpana Saxena
Director, Professor and Head
Department of Biochemistry
Maulana Azad Medical College and Associated Hospitals
New Delhi, India
Tel: +91-9968584601
E-mail: [email protected]

Received date: April 15, 2013; Accepted date: June 17, 2013; Published date: June 19, 2013

Citation: Javid J, Mir R, Masroor M, Farooq S, Ahamad I, et al. (2013) Biological and Clinical Implications of Functional Promoter Polymorphism of CASPASE 9 Gene in Non Small Cell Lung Cancer Patients. J Mol Biomarkers Diagn S8:007. doi:10.4172/2155-9929.S8-007

Copyright: © 2013 Javid J, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.


Purpose: The study was conducted to determine the impact of promoter polymorphism in CASP9 gene on
susceptibility and prognosis of Non Small Cell Lung Cancer patients of Indian origin.
Patients and methods: Present case control study includes newly diagnosed 160 NSCLC patients and 160
healthy controls. Promoter polymorphism (-712C>T, rs4645981) in CASP9 gene was investigated using PCR-RFLP
Results: Our findings reveal that a statistically significant increased risk of about 2.6 fold was associated with
homozygous TT genotype of CASP9 (-712C>T) promoter polymorphism (OR 4.3, 95%CI 2.2-8.3, p=0.0000) in Indian
population .In addition smokers were at high risk for NSCLC which was more predominant in heavy smokers with
pack-year >40 and in cigarette or beedi smokers. Compared to males, females were at high risk; about 2.3 fold more
in association with homozygous TT genotype [OR, 3.9(1.9-8.2) in males vs. 6.2(1.4-27.1) in females]. Significant
association was observed between advanced TNM stage (p<0.0001) and distant metastasis status (p<0.0001) of
NSCLC patients with the polymorphism. Patients homozygous for T allele exhibited a significant poor overall survival
compared with patients displaying CT+TT or CT or CC genotype (Median survival 6.0 vs. 9.0, 11.0, and 30.0, months
respectively, p<0.0001). Also advanced stage patients with TT genotype showed lower median survival time than
early stage NSCLC patients (Median 5.0 vs. 9.0 months respectively).
Conclusion: The functional polymorphism (-712C>T) in the promoter region of CASP9 gene is associated with
risk and susceptibility to NSCLC in north Indian population, and also is an important factor for poor prognosis in
patients with NSCLC.


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