Sichuan Kangcheng Biotech Co. 1 article published in JoVE Cancer Research Establishment and Characterization of Patient-Derived Xenograft Models of Anaplastic Thyroid Carcinoma and Head and Neck Squamous Cell Carcinoma Maodi Wu1,3, Yang Liu2, Yi Zhao3, Yuyao Zhang4, Liansi Huang3, Qijun Du3, Ting Zhang1,3, Zhihui Zhong1,3, Han Luo2, Kai Xiao1,3 1Precision Medicine Research Center, Sichuan Provincial Key Laboratory of Precision Medicine, National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, 2Department of Thyroid Surgery, West China Hospital, Sichuan University, 3Sichuan Kangcheng Biotech Co., 4Sichuan Cancer Hospital The present protocol establishes and characterizes a patient-derived xenograft (PDX) model of anaplastic thyroid carcinoma (ATC) and head and neck squamous cell carcinoma (HNSCC), as PDX models are rapidly becoming the standard in the field of translational oncology.