Tumor Burden Dictates Prognosis Among Patients Undergoing Resection of Intrahepatic Cholangiocarcinoma: A Tool to Guide Post-Resection Adjuvant Chemotherapy?

  • Diamantis I. Tsilimigras
  • , J. Madison Hyer
  • , Anghela Z. Paredes
  • , Dimitrios Moris
  • , Kota Sahara
  • , Alfredo Guglielmi
  • , Luca Aldrighetti
  • , Matthew Weiss
  • , Todd W. Bauer
  • , Sorin Alexandrescu
  • , George A. Poultsides
  • , Shishir K. Maithel
  • , Hugo P. Marques
  • , Guillaume Martel
  • , Carlo Pulitano
  • , Feng Shen
  • , Olivier Soubrane
  • , Bas Groot Koerkamp
  • , Itaru Endo
  • , Kazunari Sasaki
  • Federico Aucejo, Xu Feng Zhang, Timothy M. Pawlik

Research output: Contribution to journalArticlepeer-review

37 Scopus citations

Abstract

Introduction: While tumor burden (TB) has been associated with outcomes among patients with hepatocellular carcinoma, the role of overall TB in intrahepatic cholangiocarcinoma (ICC) remains poorly defined. Methods: Patients undergoing curative-intent resection of ICC between 2000 and 2017 were identified from a multi-institutional database. The impact of TB on overall (OS) and disease-free survival (DFS) was evaluated in the multi-institutional database and validated externally. Results: Among 1101 patients who underwent curative-intent resection of ICC, 624 (56.7%) had low TB, 346 (31.4%) medium TB, and 131 (11.9%) high TB. OS incrementally worsened with higher TB (5-year OS; low TB: 48.3% vs medium TB: 29.8% vs high TB: 17.3%, p < 0.001). Similarly, patients with low TB had better DFS compared with medium and high TB patients (5-year DFS: 38.3% vs 18.7% vs 6.9%, p < 0.001). On multivariable analysis, TB was independently associated with OS (medium TB: HR = 1.40, 95% CI 1.14–1.71; high TB: HR = 1.89, 95% CI 1.46–2.45) and DFS (medium TB, HR = 1.61, 95% CI 1.33–1.96; high TB: HR = 2.03, 95% CI 1.56–2.64). Survival analysis revealed an excellent prognostic discrimination using the TB among the external validation cohort (3-year OS; low TB: 44.8%, medium TB: 29.3%; high TB: 23.3%, p = 0.03; 3-year DFS: low TB: 32.7%, medium TB: 10.7%; high TB: 0%, p < 0.001). While neoadjuvant chemotherapy was not associated with survival across the TB groups, receipt of adjuvant chemotherapy was associated with increased survival among patients with high TB (5-year OS: 24.4% vs 13.4%, p = 0.02). Conclusion: Overall TB dictated prognosis among patients with resectable ICC. TB may be used as a tool to help guide post-resection treatment strategies.

Original languageEnglish
Pages (from-to)1970-1978
Number of pages9
JournalAnnals of surgical oncology
Volume28
Issue number4
DOIs
StatePublished - Apr 2021
Externally publishedYes

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