MLKL and head and neck squamous cell carcinoma: RIPK1/3 or MLKL is downregulated in breast cancer,130, 131 colorectal cancer,132, 133, 134 melanoma,135 gastric cancer,136 ovarian cancer,137 head and neck squamous cell carcinoma,138 cervical squamous cell carcimoma,139 and AML.140, 141