Abstract
The presence of peritoneal metastases (PM) in patients with colorectal cancer (CRC) is associated with an extremely poor prognosis. The diagnosis of PM is challenging, resulting in an underestimation of their true incidence. While surgery can be curative in a small percentage of patients, effective treatment for non-operable PM is lacking, and clinical and pre-clinical studies are relatively sparse. Here we have defined the major clinical challenges in the areas of risk assessment, detection, and treatment. Recent developments in the field include the application of organoid technology, which has generated highly relevant pre-clinical PM models, the application of diffusion-weighted MRI, which has greatly improved PM detection, and the design of small clinical proof-of-concept studies, which allows the efficient testing of new treatment strategies. Together, these developments set the stage for starting to address the clinical challenges. To help structure these efforts, a translational research framework is presented, in which clinical trial design is based on the insight gained from direct tissue analyses and pre-clinical (organoid) models derived from CRC patients with PM. This feed-forward approach, in which a thorough understanding of the disease drives innovation in its clinical management, has the potential to improve outcome in the years to come.
Highlights
Colorectal cancer (CRC) is one of the most common forms of cancer and the second leading cause of cancer-related mortality in the Western world
The benefit of systemic chemotherapy is dramatically reduced in the subgroup of CRC patients with peritoneal metastases (PM) [2, 9], and their poor visualization complicates assessment of their response to treatment
In this report we provide an overview of the major challenges in the field of PM from CRC (Figure 1) and describe a research framework that addresses these challenges (Figure 2)
Summary
Recent developments in the field include the application of organoid technology, which has generated highly relevant pre-clinical PM models, the application of diffusionweighted MRI, which has greatly improved PM detection, and the design of small clinical proof-of-concept studies, which allows the efficient testing of new treatment strategies. Together, these developments set the stage for starting to address the clinical challenges. These developments set the stage for starting to address the clinical challenges To help structure these efforts, a translational research framework is presented, in which clinical trial design is based on the insight gained from direct tissue analyses and pre-clinical (organoid) models derived from CRC patients with PM.
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