BL-1021 was developed by BioLineRx Ltd. for the treatment of neuropathic pain or pain that results from damage to nerve fibers. The drug has completed phase I clinical trials, however further information is not available.

CP-601927 is a selective α4β2 nicotinic acetylcholine receptor partial agonist developed by Pfizer. The compound has antidepressant-like activity in animal models and was investigated in a phase 2 trial as an augmentation to other antidepressant therapy in patients with Major Depressive Disorder. However, CP-601927 ultimately lacked efficacy as an adjuvant in these patients because of insufficient activity of α4β2 at therapeutic doses.

MK-0359 (L-454560) is a selective and potent type 4 phosphodiesterases (PDE4) inhibitor, which binds to both the apo-(Mg2+-free) and holoenzyme states of PDE4. This compound successfully has passed the phase II clinical trial for the treatment of asthma, Pulmonary Disease, Chronic Obstructive (COPD) and Rheumatoid Arthritis. However, there is no information about the further research of this drug.

SCY-635 is a nonimmunosuppressive cyclosporine-based analog that exhibits potent suppression of hepatitis C virus (HCV) replication. SCY-635 has reached the phase II clinical trial for the treatment of patients with hepatitis C Infection. In addition, in the preclinical model, the SCY-635 was studied for the treatment of hepatitis-B in USA.

ATB-346, being developed by Antibe Therapeutics, a Toronto-based pharmaceutical company, is a hydrogen sulfide-releasing non-steroidal anti-inflammatory drug (NSAID) that inhibits COX and suppresses prostaglandin production. ATB-346 exhibits anti-inflammatory, analgesic, antinociceptive, immunomodulatory, and neuroprotective activities. In vivo, this compound attenuates zymosan-induced inflammation, nociception, and immune signaling. ATB-346 also prevents ligature-induced periodontal bone loss and pathologies, potentially by suppressing increases in pro-inflammatory cytokine levels. Additionally, ATB-346 decreases edema and improves neurological function in animal models of traumatic brain injury (TBI). ATB-346 completed Phase 1 clinical studies in Q1 2015. To better understand the metabolism of ATB-346, Antibe conducted a radiolabeled study in rats at Covance Laboratories that was completed in Q4 2015. Antibe received approval from Health Canada in March 2016 to conduct a Phase 2 trial of ATB-346 in patients with osteoarthritis of the knee. Preclinical studies of ATB-346 for the treatment intestinal cancer; malignant melanoma; periodontal disorders are in progress.