ILS 920 (previously known as WAY-265920) was developed for the treatment of stroke. ILS-920 binds selectively to the immunophilin FKBP52 and to the β1-subunit of L-type voltage-gated calcium channels (VGCC). ILS 920 successfully completed phase I clinical trial where was determine the safety, tolerability, pharmacokinetics, and pharmacodynamics after administration of ascending single intravenous (IV) doses to healthy adult subjects. However, information about the further development of this drug is not available.

Nacubactam (FPI-1459) was developed as an antibacterial drug. Nacubactam successfully has completed phase I clinical trials for the treatment of serious gram-negative bacterial infections. The drug is currently being developed for the treatment of complicated urinary tract infection, hospital-acquired bacterial pneumonia, ventilator-associated bacterial pneumonia, and complicated intra-abdominal infections. FPI-1459 works through several mechanisms of action, inhibiting a number of beta-lactamase enzymes as well as certain bacterial cell wall enzymes. In January 2019, FPI-1459 received Fast Track and Qualified Infectious Disease Product designations from the U.S. Food and Drug Administration (FDA).

PL-3994 is a novel natriuretic cyclic peptide. It is a receptor-A (NPR-A) and receptor-C (NPR-C) agonist. PL-3994 has high affinity for recombinant human, dog, or rat NPR-As. PL-3994 produced concentration-dependent relaxation of pre-contracted guinea-pig trachea. PL-3994 elicited a potent, concentration-dependent but small relaxation of pre-contracted human precision-cut lung slices. Intratracheal PL-3994 produced a dose-dependent inhibition of the bronchoconstrictor response evoked by aerosolized methacholine, but was without significant effect on cardiovascular parameters. PL-3994 was resistant to degradation by human neutral endopeptidase. PL-3994 was well tolerated in subjects with controlled hypertension. A phase I and phase II trial have been successfully completed with PL-3994 with no safety concerns identified. In phase II study in subjects with hypertension who were receiving >1 antihypertensive medications, a significant reduction in blood pressure compared with placebo was observed. It appears that PL-3994 works synergistically with ACE inhibitors.

MK-6325 is a potent HCV NS3/4A protease inhibitor patented by Merck Sharp & Dohme Corp for treating or preventing HCV infections. In 2011 MK-6325 was studied in phase I clinical trials but no further development reports were published.

TBA-354, also known as SN31354, is a potent anti-tuberculosis drug candidate. TBA-354 is narrow spectrum and bactericidal in vitro against replicating and nonreplicating Mycobacterium tuberculosis, with potency similar to that of delamanid and greater than that of PA-824. TBA-354 maintains activity against Mycobacterium tuberculosis H37Rv isogenic monoresistant strains and clinical drug-sensitive and drug-resistant isolates. TBA-354 is a promising next-generation nitroimidazole antitubercular agent. TBA-354 emerged from studies designed to identify a next generation nitroimidazole for TB. TB Alliance conducted the studies in collaboration with the University of Auckland and University of Illinois-Chicago. Once identified, TB Alliance further advanced TBA-354 through pre-clinical development and is now the sponsor of the Phase 1 study.