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12.07.2018 | Pancreatic Tumors

The Impact of Hospital Neoadjuvant Therapy Utilization on Survival Outcomes for Pancreatic Cancer

Zeitschrift:
Annals of Surgical Oncology
Autoren:
MD Alexander V. Fisher, MD Daniel E. Abbott, MS Manasa Venkatesh, PhD Glen E. Leverson, PhD Stephanie A. Campbell-Flohr, MD Sean M. Ronnekleiv-Kelly, MD Caprice C. Greenberg, MD Emily R. Winslow, MD Sharon M. Weber
Wichtige Hinweise
This work was accepted for oral presentation at the Society of Surgical Oncology Annual Cancer Symposium in Chicago, IL, USA, on 23 March 2018.

Abstract

Background

Many surgeons advocate the use of neoadjuvant treatment for resectable pancreatic cancer, however little is known about variation in the utilization of neoadjuvant therapy (NAT) at the hospital level.

Methods

The National Cancer Data Base was used to identify patients undergoing resection for pancreatic cancer between 2006 and 2014 at high-volume centers. Hospitals were grouped by NAT utilization using standard deviations (SD) from the mean as follows: high neoadjuvant utilizers (> 2 SDs above the mean, > 40% of patients receiving NAT); medium–high (1–2 SDs, 27–40%), medium (0–1 SD, 14–26%); or low (− 1.1 to 0 SDs, < 14%). Overall survival (OS) was compared across NAT utilization groups.

Results

Among 107 high-volume centers, 20,119 patients underwent resection. The proportion of patients receiving NAT varied widely among hospitals, ranging from 0 to 74%, with only five centers using NAT in > 40% of patients. These five hospitals had the longest median OS at 28.9 months, compared with 21.1 months for low neoadjuvant utilizers (p < 0.001). On multivariable analysis, high and medium–high NAT utilization predicted improved OS, with a hazard ratio (HR) of 0.68 (95% confidence interval [CI] 0.56–0.83, p < 0.001) and 0.80 (95% CI 0.68–0.95, p = 0.010), respectively, compared with low utilizers. After excluding patients who underwent NAT, there remained an association of improved OS with high NAT utilization (HR 0.74, 95% CI 0.60–0.93, p = 0.009).

Conclusion

High-volume hospitals that more commonly utilize NAT demonstrated longer survival for all patients treated at those centers. In addition to altering patient selection for surgery, high neoadjuvant utilization may be a marker of institutional factors that contribute to improved outcomes.

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