Aurora Health Care, Milwaukee, WI
Samit Kumar Datta , Geoffrey Belini , Maharaj Singh , Wesley Allan Papenfuss , Federico Augusto Sanchez , Nalini Guda , James L. Weese , Aaron Chevinsky
Background: There has been a paradigm shift in the treatment of stage 1 pancreatic adenocarcinoma (PAC) from surgery first followed by adjuvant therapy (AT) to Neoadjuvant therapy (NAT) first followed by surgery and this is reflected in the current NCCN guidelines as well. Data comparing these two modalities are limited. AIM: To compare long time survival between surgery vs Surgery + AT and NAT + Surgery in a large National Cancer Database. Methods: We identified patients with surgically resected AJCC clinical stage 1, 1A, and 1B PAC between 2004-2014. Patients were stratified into 3 groups to assess outcomes. Exclusion criteria: those with incomplete survival and sequence of therapy data. Hazard ratios (HR) were calculated for evaluation of survival, as well as for 30-Day and 90-Day Mortality between the 3 groups. Results were adjusted for age and Deyo-Charlson comorbidity index. Results: A total of 9684 pts with Clincal stage 1, 1A, 1B PAC between 2004-2014 were identified. Of these 2266 pts underwent surgery alone; 6222 had surgery followed by AT; and 1196 pts had neoadjuvant therapy followed by surgery. There was a HR of 0.995 (95% CI 0.935-1.058 p = 0.864) and 0.984 (95% CI 0.924-1.048, p = 0.617) for 30- and 90-Day mortality comparing upfront surgery to NAT, respectively. With AT as the reference group for survival, there was a HR of 1.362 (95% CI 1.286-1.443, p < 0.001) for surgery only and HR of 0.929 (95% CI 0.859-1.004, p = 0.064) for NAT. Conclusions: 1. Surgery alone had worse overall survival. 2. There was no significant difference in overall survival when comparing AT and NAT 3. A prospective randomized trial evaluating the differences in survival is needed.
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Abstract Disclosures
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