Zhuhai Yufan Biotechnologies Co. Ltd. has divulged mitogen-activated protein kinase kinase kinase kinase 1 (MAP4K1; HPK1; MEKKK1) inhibitors reported to be useful for the treatment of cancer, chronic obstructive pulmonary disease, AIDS, hemolytic anemia, psoriasis, scleroderma, systemic lupus erythematosus and ulcerative colitis, among others.