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Treatment response of colorectal cancer liver metastases to neoadjuvant or conversion therapy: a prospective multicentre follow-up study using MRI, diffusion-weighted imaging and 1H-MR spectroscopy compared with histology (subgroup in the RAXO trial)

  • University of Helsinki
  • Tampere University Hospital
  • University Hospital of Oulu
  • University of Oulu
  • Tampere University
  • Päijät-Häme Central Hospital
  • University of Turku
  • Karolinska Sjukhuset
  • Helsinki University Central Hospital
  • Turku PET Centre
  • Turku University Hospital

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Web of Science)
94 Downloads (Pure)

Abstract

BACKGROUND: Colorectal cancer liver metastases respond to chemotherapy and targeted agents not only by shrinking, but also by morphologic and metabolic changes. The aim of this study was to evaluate the value of advanced magnetic resonance imaging (MRI) methods in predicting treatment response and survival. PATIENTS AND METHODS: We investigated contrast-enhanced MRI, apparent diffusion coefficient (ADC) in diffusion-weighted imaging and 1H-magnetic resonance spectroscopy (1H-MRS) in detecting early morphologic and metabolic changes in borderline or resectable liver metastases, as a response to first-line neoadjuvant or conversion therapy in a prospective substudy of the RAXO trial (NCT01531621, EudraCT2011-003158-24). MRI findings were compared with histology of resected liver metastases and Kaplan-Meier estimates of overall survival (OS). RESULTS: In 2012-2018, 52 patients at four Finnish university hospitals were recruited. Forty-seven patients received neoadjuvant or conversion chemotherapy and 40 liver resections were carried out. Low ADC values (below median) of the representative liver metastases, at baseline and after systemic therapy, were associated with partial response according to RECIST criteria, but not with morphologic MRI changes or histology. Decreasing ADC values following systemic therapy were associated with improved OS compared to unchanged or increasing ADC, both in the liver resected subgroup (5-year OS rate 100% and 34%, respectively, P = 0.022) and systemic therapy subgroup (5-year OS rate 62% and 23%, P = 0.049). 1H-MRS revealed steatohepatosis induced by systemic therapy. CONCLUSIONS: Low ADC values at baseline or during systemic therapy were associated with treatment response by RECIST but not with histology, morphologic or detectable metabolic changes. A decreasing ADC during systemic therapy is associated with improved OS both in all patients receiving systemic therapy and in the resected subgroup.

Original languageEnglish
Article number100208
Pages (from-to)100208
Number of pages11
JournalESMO Open
Volume6
Issue number4
DOIs
Publication statusPublished - 1 Aug 2021
MoE publication typeA1 Journal article-refereed

Funding

This investigator-initiated RAXO study was supported by Finska Lakaresallskapet (2015, 2016, 2017, 2018, 2019, 2020, 2021); Cancer Foundation Finland (2018-2019, 2020); Relander's Foundation (2020-2022); the Competitive State Research Financing of the Expert Responsibility Area of Tampere, Helsinki and Turku (2016, 2017, 2018, 2019, 2020, 2021); Tampere University Hospital Funds (Tukisaatio 2019, 2020; OOO 2020); and the Research Fund of Helsinki University Hospital (2019, 2020). The infrastructure with database and study nurses were partly supported by pharmaceutical companies (Amgendunrestricted grant 2012-2020, Lilly 2012-2017, Merck KGaA 2012-2020, Roche Finland 2012-2020, Sanofi 2012-2017 and Servierd unrestricted grant 2016-2020). The funders had no role in the study design, analysis, interpretation of the data, decision to publish or writing of this report. All authors had full access to the data and had final responsibility for the decision to submit for publication.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • colorectal cancer
  • liver metastasis
  • neoadjuvant chemotherapy
  • liver surgery
  • diffusion-weighted imaging
  • magnetic resonance spectroscopy
  • PATHOLOGICAL RESPONSE
  • CHEMOTHERAPY
  • PREDICTION
  • TUMOR
  • BEVACIZUMAB
  • SURVIVAL
  • CRITERIA
  • OUTCOMES
  • SURGERY
  • FAT

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