Relationship Between Xanthine Oxidoreductase Activity and BRCA1 Levels in Patients with Stage IIIA and IIIB Non-Small Cell Lung Cancer Being Treated with Neoadjuvant Chemotherapy
Received Date : 16 Oct 2019
Accepted Date : 09 Apr 2020
Available Online : 24 Jun 2020
Selim YALÇINa, Ahmet SEZERb, Ahmet Taner SÜMBÜLb, Samet RAHATLIc,
Özden ALTUNDAĞc, Ali Murat SEDEFd, Özgür ÖZYILKANb
aKırıkkale University Faculty of Medicine, Department of Medical Oncology, Kırıkkale, TURKEY
bBaşkent University Faculty of Medicine, Department of Medical Oncology, Adana, TURKEY
cBaşkent University Faculty of Medicine, Department of Medical Oncology, Ankara, TURKEY
dŞanlıurfa Numune Research and Training Hospital Division of Medical Oncology, Şanluurfa, TURKEY
Doi: 10.37047/jos.2019-71890 - Article's Language: EN
J Oncol Sci.2020;6(2):71-7
ABSTRACT
Objective: Lung cancer is the leading cause of cancer-related death worldwide. Treatment in locally advanced non-small cell
lung cancer (NSCLC) is heterogeneous. The cure rates after complete surgical resections are not as good as expected. A better understanding
of the biology of NSCLC might allow the selection of appropriate treatment. Only a few studies have been carried out on the prognostic value
of xanthine oxidoreductase (XOR) and BRCA1 in lung cancer. Material and Methods: In this study, 35 patients with stage IIIA and stage
IIIB of NSCLC were included. They were operated in Baskent Ankara and Adana hospitals and received neoadjuvant chemotherapy. The regular
follow-up of all the patients was done in Baskent University Medical Oncology, Thoracic Surgery Department. The clinical and histopathological
parameters (age, gender, stage, smoking history, performance status, and neoadjuvant chemotherapy), along with the
immunohistochemical study of BRCA1 and XOR staining, were examined, and correlated with survival outcomes. Results: Median overall
survival time was reported as 38.5 months, and 5-year survival rate was 33%. The presence of BRCA1 was positively associated with shorter
overall survival in stage III lung cancer patients, who were followed up with the neoadjuvant platinum-based chemotherapy regime (p<0.05).
There was no relation between XOR activity and overall survival outcomes. Conclusion: BRCA1-positive status might be prognostic in patients
with Stage IIIA and IIIB of NSCLC.
Keywords: BRCA1; NSCLC; prognosis, and XOR activity