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Role of chemoradiation in gallbladder cancer-a single institution retrospective analysis
Ravi Kumar Paluri1,2, Hatic Haris1, Peng Li1,3
1Division of Hematology-Oncology, Department of Medicine, University of Alabama at Birmingham, Birmingham, AL, USA.
Background:
Gallbladder cancer is one of the highest fatal malignancy. We conducted a retrospective analysis to study the outcomes of gallbladder malignancy in an academic care setting.
Methods:
Data was collected retrospectively on patients treated at University of Alabama at Birmingham between January 2005 and June 2015 from the electronic medical record using a standardized data collection tool (Redcap). We evaluated for predictors of overall survival (OS) and progression-free survival (PFS).
Results:
Of the 93 patients in this study, 66.7% were female. Adjuvant chemotherapy (CT) was given to 11% and adjuvant chemoradiation (CRT) to 14%. On multivariate analysis, albumin >3.5 g/dL, uninvolved margins, absence of lymphovascular invasion, and peri-neural invasion were independent predictors of OS and PFS. The overall median survival time was 24.3 months with a 5-year survival rate at 23.7%. Surgery with CRT for the full cohort had a median OS of 54.4 vs. 15.6 months (P=0.0048) compared to surgery CT alone. The OS in stage 3-4 patients with surgery alone vs. surgery & CT was 5.5 vs. 28.7 months, respectively (P=0.0061). The PFS for the same group was 4.6 vs. 17.5 months (P=0.0052).
Conclusions:
The dismal survival rates of gallbladder cancer made adjuvant therapy (CT or CRT) critically important. Concurrent CRT needs to be evaluated in randomized clinical trials for potential improvement in clinical outcomes compared to currently approved standard of care, adjuvant CT alone.
