Transarterial Chemoembolization with Epirubicin-Loaded Microspheres for Hepatocellular Carcinoma: A Prospective, Single-Arm, Multicenter, Phase 2 Study (STOPPER Trial)

Cardiovasc Intervent Radiol. 2024 Mar;47(3):325-336. doi: 10.1007/s00270-024-03666-4. Epub 2024 Feb 27.

Abstract

Purpose: While the role of drug-eluting beads transarterial chemoembolization (DEB-TACE) for hepatocellular carcinoma (HCC) is established, questions regarding appropriate bead size for use in patients remain. This trial evaluated the effectiveness and safety of DEB-TACE using small-size (≤ 100 μm) microspheres loaded with epirubicin.

Materials and methods: This prospective, single-arm, multicenter study enrolled patients diagnosed with HCC who underwent DEB-TACE using 40 (range, 30-50), 75 (range, 60-90), or 100 (range, 75-125) μm epirubicin-loaded microspheres (TANDEM microspheres, Varian Medical). Bead size was at the discretion of treating physicians and based on tumor size and/or vascular structure. The primary outcome measure was 6-month objective response rate (ORR). Secondary outcome measures were 30-day and 3-month ORR, time to tumor progression and extrahepatic spread, proportion of progression-free survival and overall survival (OS) at one year, and incidence of treatment-associated adverse events.

Results: Data from 108 patients from ten centers was analyzed. Six-month ORR was 73.3 and 71.3% based on European association for the study of the liver (EASL) and modified response evaluation criteria in solid tumors (mRECIST) criteria, respectively. Thirty-day ORR was 79.6% for both EASL and mRECIST criteria with 3-month ORR being 80.0 and 81.0%, respectively, for each criteria. One-year PPF and OS rate were 60.3 and 94.3%. There was a total of 30 SAEs reported to be likely to definitely associated with microsphere (n = 9), epirubicin (n = 9), or procedure (n = 12) with none resulting in death.

Conclusion: DEB-TACE using epirubicin-loaded small-sized (≤ 100 μm) microspheres demonstrates promising local tumor control and acceptable safety in patients with HCC.

Trial registration: Clinicaltrials.gov NCT03113955; registered April 14, 2017. Trial Registration Clinicaltrials.gov NCT03113955; registered April 14, 2017.

Level of evidence: 2, Prospective, Non-randomized, Single-arm, study.

Keywords: Epirubicin; Hepatocellular carcinoma; TANDEM microspheres; Transarterial chemoembolization.

Publication types

  • Multicenter Study
  • Clinical Trial, Phase II

MeSH terms

  • Carcinoma, Hepatocellular* / pathology
  • Chemoembolization, Therapeutic* / methods
  • Doxorubicin
  • Epirubicin
  • Humans
  • Liver Neoplasms* / pathology
  • Microspheres
  • Prospective Studies
  • Retrospective Studies
  • Treatment Outcome

Substances

  • Epirubicin
  • Doxorubicin

Associated data

  • ClinicalTrials.gov/NCT03113955