Breast cancer dormancy: need for clinically relevant models to address current gaps in knowledge

Area of Science:

• Oncology
• Cancer Biology
• Metastasis Research

Background:

• Estrogen receptor-positive breast cancer survivors face lifelong risk of metastatic relapse.
• Disseminated tumor cells (DTCs) are believed to cause late relapses after prolonged dormancy.
• The biology and natural history of dormant DTCs remain poorly understood.

Purpose of the Study:

• To review existing models of tumor dormancy in breast cancer.
• To identify gaps in the biological understanding of dormant tumor cells.
• To propose criteria for developing clinically relevant dormancy models.

Main Methods:

• Literature review of existing tumor dormancy models.
• Analysis of current knowledge gaps in dormant cell biology.
• Formulation of criteria for future model development.

Main Results:

• Current dormancy models have limitations in clinical relevance.
• Significant gaps exist in understanding the mechanisms driving dormancy and reactivation.
• There is a need for models that accurately recapitulate the patient experience of dormancy.

Conclusions:

• Improved preclinical models are essential for advancing breast cancer metastasis research.
• Future models should focus on recapitulating the long-term dormancy and reactivation of DTCs.
• Developing better models will facilitate the discovery of therapeutic strategies to prevent late relapse.