Abstract:The patient-derived tumor-like cell cluster (PTC), also known as mini-tumor, represents a novel 3D tumor model with a high resemblance to the original tumor tissue in terms of histopathological and genetic characteristics. Notably, PTCs include stromal cells such as fibroblasts and various immune cells, effectively recapitulating the microenvironment of the original tumor tissue. With broad applications in basic scientific research, precision medicine, and drug discovery, the construction and utilization of PTCs involve intricate technical processes. However, the absence of a standardized procedure for PTC construction, identification, and drug sensitivity detection poses a challenge. Addressing this gap, we present the "Chinese expert consensus on the construction of patient-derived tumor-like cell cluster (PTC) model and anti-tumor drug sensitivity detection technology (2023 Version). " This consensus aims to enhance the comprehension of the PTC model and provide guidance for its application in anti-tumor drug sensitivity testing.