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Background: Many real-world studies of patients with metastatic pancreatic ductal adenocarcinoma (mPDAC) are restricted to single centers, limiting the generalizability of their insights. This study aimed to identify important population-based predictors for survival in patients diagnosed with mPDAC in a broader setting.
Methods: Data between 1 January 2017 and 31 December 2019 were extracted from the Flatiron Health EHR database. Treatment-specific predictive models were generated for patients treated with first-line gemcitabine+nab-paclitaxel (GNP), FOLFIRINOX, gemcitabine monotherapy (gem-mono), and second-line liposomal irinotecan-based regimens. The holdout method was used for cross-validation. Age at diagnosis, sex, BMI, smoking status, and ECOG performance score were included in all models with additional demographic, clinical characteristics, and hematological function assessed for inclusion.
Results: Of the 3625 patients, 43% received GNP, 26% received FOLFIRINOX, 7% received gem-mono, and 23% received other regimens; 40% (n = 1448) advanced to the second line. Among all first-line patients, the following were included in the final model: prior surgery, white blood cell (WBC) counts, serum albumin (SA), liver function tests (LFTs), serum bilirubin, serum carbohydrate antigen 19-9, and ascites. Models for patients receiving specific therapies differed from the overall model, GNP (ascites removed), FOLFIRINOX (stage at initial diagnosis added), and gem-mono (LFTs omitted). Alkaline phosphatase (ALP), SA, and WBC counts were important predictors of survival among patients treated with second-line liposomal irinotecan. Across all regimens, the strongest predictors of survival were ECOG score, SA, and ALP.
Conclusions: In this real-world study of patients with mPDAC, important population prognostic factors of survival were identified in a large cohort of patients receiving systemic treatment.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8683530 | PMC |
| http://dx.doi.org/10.1002/cam4.4415 | DOI Listing |
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