Motolimod (VTX-2337) is a small molecule, selective Toll-like receptor (TLR) 8 agonist has been used in trials studying phase II for the treatment of peritoneal carcinoma, Ovarian Cancer, Fallopian Tube Cancer, B-cell lymphoma, squamous cell carcinoma of the head and neck among others. Motolimod is designed to mobilize a patient's immune system by directly activating myeloid dendritic cells, monocytes, and natural killer cells. This activation results in the production of a high level of mediators known to orchestrate the integration of both the innate and adaptive anti-tumor responses to a number of cancers.

Vesatolimod, also known as GS-9620, is being developed in clinical studies for the treatment of chronic hepatitis B viral (HBV) infection, with the goal of inducing a liver-targeted antiviral effect without inducing the adverse effects associated with current systemic interferon-α (IFN-α) therapies. It is demonstrate interferon-stimulated gene induction without detectable serum interferon at low oral doses. GS-9620 is a potent and oral agonist of Toll-like receptor-7, a pattern-recognition receptor whose activation results in innate and adaptive immune stimulation

NGX267 is a partial muscarinic receptor agonist with functionally specific M1 and M3 receptor activity, developed by Torrey Pines Therapeutics(TPTX) for the treatment of Xerostomia, Alzheimer’s disease and cognitive deficits in schizophrenia. NGX-267 had been in phase II clinical trials for the treatment of Xerostomia, however, all researchers on this drug candidate were discontinued.

LY377604 is a human β3-adrenergic receptor agonist and β1- and β2-adrenergic receptor antagonist with no sympathomimetic activity at the β1- and β2-adrenergic receptors. Combination of LY377604 and a norepinephrine-serotonin uptake inhibitor (sibutramine) was studied in the treatment of obesity. LY377604 would ameliorate side effect of sibutramine treatment (increase in blood pressure and heart rate due to activation of the sympathetic nervous system).

TAK-875 (Fasiglifam) is the potent, selective and orally bioavailable GPR40 agonist. The drug was in Phase III clinical trials for the treatment of type 2 diabetes mellitus. Termination phase III development of TAK-875 for the potential treatment of type-2 diabetes mellitus was announced in 2013 due to concerns about liver safety.

Pfizer was developing PF-4995274, an orally administered serotonin 4 receptor (5HT-4) agonist for the treatment of Alzheimer's disease. In 2011, the company discontinued the development of the compound.

Icometasone (CL09) is a synthetic glucocorticoid corticosteroid. It is a metabolite of Mometasone Furoate. The binding on human serum albumin was shown to be non saturable, suggesting that other proteins were involved in CL09 binding. This binding was demonstrated to be reversible. CL09 was extensively metabolized since no unchanged CL09 was recovered in bile or urine and at least nine metabolites have been detected. It was studied in Europe as an anti-asthmatic agent but investigation is discontinued.

GlaxoSmithKline is developing Camicinal (GSK 962040), an oral motilin receptor agonist for the treatment of gastroparesis. Camicinal is being evaluated in phase II for diabetic gastroparesis and gastroparesis. Camicinal is well tolerated in multiple trials with no serious drug-related adverse events or changes in ECG chemistry when given as a single oral dose of up to 125 mg. Although larger studies are soon to be reported, current evidence shows that adverse events occurred evenly between the placebo and treatment groups, and was generally mild. Camicinal has been previously shown to increase gastric emptying in volunteers after repeat dosing over 14 days with no tolerance effect in patients with gastroparesis and type 1 diabetes. Camicinal meets the criteria of an ideal motilin agonist. The compound activates long-lasting cholinergic contractility at low doses in the antrum with greater efficacy than current therapeutic options.

Daidzein, an isoflavonoid phytoestrogenic compound found in soybeans, possesses various biological properties. It may induce apoptosis of choriocarcinoma cells in a dose-dependent manner via the mitochondrial apoptotic pathway, in addition, it promotes proliferation and differentiation in osteoblastic OCT1 cells via activation of the BMP-2/Smads pathway. Daidzein exerts neuroprotective effects through the novel extranuclear GPR30 and the classical transcriptionally acting ERβ.

Fedovapagon, also known as VA106483 and VT483, is a potent, nonpeptidic vasopressin V2 receptor agonist. Vasopressin (AVP) is a hormone that stimulates an increase in water permeability through activation of V2 receptors in the kidney. Fedovapagon (VA106483) was discovered by Vantia and currently in Phase II trials for the treatment of nocturia, a common condition that causes sufferers to wake frequently during the night in order to urinate. Fedovapagon has been extensively studied in clinical trials and data, presented at the American Urological Association meeting in 2010, demonstrated a dose-dependent reduction in nocturnal urine volumes and a reliable pharmacodynamic effect on repeated dosing. More recently, data presented in San Diego at the 2012 American Urological Association meeting, showed that fedovapagon was effective from the first night of dosing and that there was no effect following cessation of dosing. Further presentations are planned for the International Continence Society meeting being held in Barcelona in August 2013. These data suggest that fedovapagon has the potential to be an effective and well tolerated antidiuretic for the treatment of nocturia. Fedovapagon is currently being investigated as a new treatment for nocturia in a Phase-II/III clinical trials in USA (PO)(NCT02637960).