University of Cincinnati College of Medicine, Cincinnati, OH;
Andrew Steinmetz , Sameer H. Patel , Gregory C. Wilson , Jeffrey J. Sussman , Olugbenga Olanrele Olowokure , Jordan Kharofa , Syed A. Ahmad , Davendra Sohal
Background: Treatment of PC remains a challenge, with surgery being the mainstay of potentially curative therapy. Even after surgical resection, however, many patients experience recurrence. There has been a shift toward treating PC as a systemic disease from diagnosis with neoadjuvant chemotherapy (nCT) or chemoradiation (nCRT). This study examines characteristics of real-world patients who were deemed to have resectable (R) or borderline resectable (BR) disease, and how they relate to overall survival (OS). Methods: This is a retrospective analysis of patients in an academic health system who presented for initiation of treatment for PC staged as R or BR. Descriptive data on patient characteristics, performance status (PS), laboratory values, neoadjuvant therapies, recurrence, and mortality were obtained. OS was evaluated using Kaplan-Meier analysis and log-rank tests. Two-sided p-values were calculated. Results: From electronic records at the University of Cincinnati, 129 patients were identified. Median age was 66 with baseline ECOG PS of mostly 0 (86, 67%) or 1 (40, 31%). Primary tumor site was most commonly head of pancreas (104, 81%). Of 129, 55 (43%) patients received surgery upfront; the rest received neoadjuvant therapy (39 nCRT, 35 nCT) with gemcitabine (68%) or 5-fluorouracil (32%) containing regimens. Of those receiving nCRT/nCT, 36 (49%) went on to resection; the rest experienced progression (27, 36%) or toxicities (11, 15%) including death. Of 129, 92 (71%) have died, with median OS of 20.1 months (95% CI 16.4 - 25.0) for the full cohort. On adjusted multivariable analysis, the following were associated with worse OS: failure to undergo resection (HR 5.65, 95% CI 3.17 - 10.09, p<0.0001); receiving <3 cycles nCT (HR 3.00, 95% CI 1.38 - 6.53, p=0.006); baseline CA 19-9 >100 (HR 2.73, 95% CI 1.52 - 4.90, p=0.001); BR disease (HR 2.20, 95% CI 1.27 – 3.81, p=0.005); not receiving RT (HR 1.91, 95% CI 1.04 - 3.53, p=0.038). Regimen choice was not associated with OS. Conclusions: In this real-world PC dataset, surgical resection remains the mainstay of curative therapy. Inadequate nCRT/nCT lead to suboptimal outcomes, likely reflecting patient physiology and disease biology effects. Future trials should focus on maximizing neoadjuvant therapy with the goal of resection.
Parameter | Chi-Square | P-value | HR | 95% HR CI |
---|---|---|---|---|
CA 19-9 Normal | 1.12 | 0.29 | 1.50 | 0.71-3.19 |
CA 19-9 >100 | 11.36 | <0.01 | 2.73 | 1.52-4.90 |
BR Disease | 7.93 | <0.01 | 2.20 | 1.27-3.81 |
Not Undergoing Resection | 34.34 | <0.01 | 5.65 | 3.17-10.09 |
<3 cycles nCT | 7.62 | 0.01 | 3.00 | 1.38-6.53 |
Not Receiving nRT | 4.29 | 0.04 | 1.91 | 1.04-3.53 |
Disclaimer
This material on this page is ©2024 American Society of Clinical Oncology, all rights reserved. Licensing available upon request. For more information, please contact licensing@asco.org
Abstract Disclosures
2023 ASCO Gastrointestinal Cancers Symposium
First Author: Masaaki Murakawa
2024 ASCO Gastrointestinal Cancers Symposium
First Author: Jun Okui
2023 ASCO Gastrointestinal Cancers Symposium
First Author: Fergus Keane
2020 ASCO Virtual Scientific Program
First Author: Jori Lee Kaplan