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Time to Initiation of Adjuvant Chemotherapy in Pancreas Cancer: A Multi-Institutional Experience

  • Pancreatic Tumors
  • Published:
Annals of Surgical Oncology Aims and scope Submit manuscript

Abstract

Background

Despite randomized trials addressing adjuvant therapy (AT) for pancreas cancer, the ideal time to initiate therapy remains undefined. Retrospective analyses of the ESPAC-3 trial demonstrated that time to initiation of AT did not impact overall survival (OS). Given the absence of confirmatory data outside of a clinical trial, we sought to determine if AT timing in routine clinical practice is associated with OS differences.

Methods

Perioperative data of pancreatectomies for ductal adenocarcinoma from five institutions (2005–2015) were assessed. Delay in AT was defined as initiation >12 weeks after surgery. Multivariate analysis was performed to identify predictors of mortality.

Results

Of 867 patients, 172 (19.8%) experienced omission of AT. Improved OS was observed in patients who received AT compared with patients who did not (24.8 vs. 19.1 months, p < 0.01). Information on time to initiation of AT was available in 488 patients, of whom 407 (83.4%) and 81 (16.6%) received chemotherapy ≤12 and >12 weeks after surgery, respectively. There were no differences in recurrence-free survival or OS (all p > 0.05) between the timely and delayed AT groups. After controlling for perioperative characteristics and tumor pathology, patients who initiated AT ≤ 12 or > 12 weeks after surgery had a 50% lower odds of mortality than patients who only underwent resection (p < 0.01).

Conclusions

In a multi-institutional experience of resected pancreas cancer, delayed initiation of AT was not associated with poorer survival. Patients who do not receive AT within 12 weeks after surgery are still appropriate candidates for multimodal therapy and its associated survival benefit.

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Funding

No sources of funding were used to assist in the preparation of this study.

Conflict of interest

Brent T. Xia, Syed A. Ahmad, Ali H. Al Humaidi, Dennis J. Hanseman, Cecilia G. Ethun, Shishir K. Maithel, David A. Kooby, Ahmed Salem, Clifford S. Cho, Sharon M. Weber, Susan J. Stocker, Mark S. Talamonti, David J. Bentrem, and Daniel E. Abbott have no conflicts of interest to declare.

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Correspondence to Daniel E. Abbott MD.

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Xia, B.T., Ahmad, S.A., Al Humaidi, A.H. et al. Time to Initiation of Adjuvant Chemotherapy in Pancreas Cancer: A Multi-Institutional Experience. Ann Surg Oncol 24, 2770–2776 (2017). https://doi.org/10.1245/s10434-017-5918-z

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  • DOI: https://doi.org/10.1245/s10434-017-5918-z

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