Chiesi Farmaceutici SpA has prepared azetidine derivatives acting as cathepsin C (dipeptidyl peptidase 1, DPP-1) inhibitors and reported to be useful for the treatment of non-cystic fibrosis bronchiectasis (NCFBE), among others.

Dong-A ST Co. Ltd. has reported new eukaryotic translation initiation factor 2α kinase 4 (GCN2) inhibitors as potentially useful for the treatment of cancer, infections, neurodegenerative and metabolic diseases.

NLRP3 inflammasome inhibitors have been disclosed in a Kodiak Sciences Inc. patent and described as useful for the treatment of atherosclerosis, gout, rheumatoid arthritis, inflammatory bowel, Alzheimer’s, Parkinson diseases, multiple sclerosis and glaucoma.

Aligos Therapeutics Inc. and Katholieke Universiteit Leuven have jointly patented 3C-like proteinase (3CLpro; Mpro; nsp5) (SARS-CoV-2; COVID-19 virus) inhibitors for the treatment of SARS-CoV-2 infection (COVID-19), middle East respiratory syndrome coronavirus (MERS-CoV) infection, norovirus and rhinovirus infections.

Research at Dana-Farber Cancer Institute Inc. has led to the identification of new interleukin-1 receptor-associated kinase 4 (IRAK-4) inhibitors reported to be useful for the treatment of cancer, autoimmune and inflammatory disorders.

Chongqing Fuan Pharmaceutical (Group) Co. Ltd. has prepared and tested class of 7-((5-membered heterocyclic)methyl)-8-carboxylic acid-benzo cyclic borate derivatives reported to be useful for the treatment of bacterial infections.

Hinova Pharmaceuticals Inc. has patented new phosphatidylinositol 3-kinase (PI3K) inhibitors reported to be useful for the treatment of cancer.

Chengdu Easton Biopharmaceuticals Co. Ltd. has identified cyclin-dependent kinase 7 (CDK7) inhibitors reported to be useful for the treatment of cancer.

Cgenetech (Suzhou, China) Co. Ltd. has synthesized tyrosine-protein kinase JAK2 inhibitors reported to be useful for the treatment of autoimmune diseases, myeloproliferative diseases and graft-versus-host disease.