The document outlines the diverse applications of CRISPR/Cas9 technology in basic and medical research, emphasizing its role in gene expression, epigenetic regulation, and the creation of human disease models for drug discovery and treatment. It highlights how CRISPR/Cas9 simplifies gene study through precision editing and the development of animal/cell models to understand and address complex diseases. Additionally, advances in CRISPR-based therapies are discussed, exhibiting its advantages over traditional gene therapy methods.