DC-ATG4in is a small molecule autophagy related 4B (ATG4B) inhibitor, directly binds to ATG4B and inhibits its enzyme activity with IC50 of 3.08 uM, DC-ATG4in is an autophagy inhibitor.

NSC 185058 is an inhibitor of ATG4B, a cysteine protease that activates LC3B during the initiation of autophagy.

Cambendazol is an antihelmintic that, at a dose of 50 mg/kg/day in mice, eradicates S. ratti adult worms from intestine and S. stercoralis larva from muscle.

FMK 9a is an autophagin-1 inhibitor with IC50 values of 80 and 73 μM in FRET and LRA assay.

UAMC-2526 (UAMC2526) is a low micromolar ATG4B and autophagy inhibitor.UAMC-2526 (50-100 uM) completely inhibits proliferation of HT-29 colorectal carcinoma cells.UMAC-2526 inhibits autophagy in a colorectal cancer xenograft model and potentiates chemotherapy efficacy.UMAC-256 inhibits autophagy in a healthy mouse model, animals treated withcompound UAMC-2526 showed lower levels of uncleaved (free) GFP, decreased LC3-II/LC3-I ratios and a marked increase of SQSTM1.UAMC-2526 combined with gemcitabine significantly reduced tumor growth as compared to the individual treatments, did not inhibit autophagy in the Panc02 mouse model.

Atg4B inhibitor 21f is a potent competitive inhibitor for Atg4B with Ki of 3.1 uM.Atg4B inhibitor 21f enhanced the anticancer activity of anti-CRPC drugs via autophagy inhibition.

S130 (ATG4B inhibitor S130) is a potent, specific ATG4B inhibitor with IC50 of 3.24 uM, shows strong affinity (Kd=4 uM) and specifically suppresses the activity of ATG4B, but not other proteases.

LV-320 (LV320) is a novel potent, cell-active, allosteric inhibitor of the autophagy-related cysteine protease ATG4B with IC50 of 24.5 uM in ATG4B cleavage assays.