Mibolerone is a synthetic anabolic steroid. It binds both androgen and progesterone receptors and exerts both androgenic and progestagenic actions. Mibolerone (CHEQUE® Drops) was used in veterinary for estrous (heat) prevention in adult female dogs not intended primarily for breeding purposes. No prescription preparation, human or veterinary, is currently known to contain mibolerone worldwide.

Ebiratide (Hoe 427) is a peptide analog of corticotrophin (ACTH 4-9). Ebiratide is endocrinologically inert. Ebiratide is highly lipophilic and has prolonged metabolic stability. Ebiratide exerts neurotrophic properties in vivo. It also was proven to have significant effects on acetylcholine metabolism. It has been investigated in the treatment of Alzheimer's disease.

Rofleponide is a third generation synthetic glucocorticosteroid. This compound has high affinity for the rat thymus glucocorticoid receptor and showed a very high biotransformation rate in the human liver. Rofleponide was being investigated for its anti-inflammatory, immunosuppressive and anti-anaphylactic activity. It was evaluated in phase II clinical trials for its safety and efficacy in allergic rhinitis and asthma, and in a preclinical study for use in inflammatory bowel disease, but development of this drug was discontinued. Rofleponide was never marketed.

Nylestriol is a synthetic estrogen which is marketed in China under the brand name Wei Ni An. Nylestriol can be used as an effective and acceptable estrogen replacement therapy for postmenopausal women. It was found to be effective, safe and convenient in treating postmenopausal osteoporosis.

Kintor Pharma is developing proxalutamide (developmental code GT-0918), an androgen receptor antagonist, for the treatment of metastatic castrate-resistant prostate cancer and AR-positive triple-negative breast cancer. Proxalutamide is involved in phase III clinical trials in China and in phase II in the USA for patients with metastatic castrate-resistant prostate cancer. In addition, the drug participates in phase I clinical trials for the treatment of AR-positive triple-negative breast cancer. Proxalutamide is expected to become a more effective, less toxic second-generation AR antagonist, which will have a bright prospect once it receives approval for coming on the market.

Ribuvaptan (BAY 868050) is a vasopressin receptor antagonist that has been developed for treatment of heart failure. No information on current use is available.

Seviteronel (VT-464) is a 17,20-lyase selective inhibitor of CYP17A1, which plays key roles in adrenal and intratumoral de novo biosynthesis of androgens. The inhibition of 17,20-lyase activity by seviteronel (VT-464) is enough to reduce androgen levels, and its preserving of 17alpha-hydroxylase activity largely avoids interference with the production of other steroidal hormones. Seviteronel (VT-464) also has shown AR-antagonist activity independent of CYP17 enzyme inhibition. It is currently in phase 2 clinical trials as a therapeutic for castration-resistant prostate cancer patients.

Relamorelin (also known as BIM28131 or RM-131) is a synthetic, selective, prokinetic ghrelin analog that was developed for treatment of gastrointestinal motility disorders (such as chronic constipation and diabetic gastroparesis). Relamorelin was shown to relief symptoms such as nausea, fullness, bloating and abdominal pain. It is safe and well-tolerated in healthy individuals, and has no neurological or cardiovascular adverse effects, making this a promising drug with an advantage over other available therapies. A phase III clinical trial comparing the efficacy of relamorelin with that of placebo in participants with diabetic gastroparesis (DG) was still ongoing in 2019.

Vilaprisan, a small molecule progesterone receptor antagonist is being developed by Bayer HealthCare Pharmaceuticals (formerly Bayer Schering Pharma) for the treatment of endometriosis and uterine leiomyoma. Hormonal imbalance observed in women with endometriosis is a potential target for treating endometriosis. Vilaprisan is a highly selective steroidal progesterone receptor modulator (SPRM). It is a partial agonist of progesterone receptor, which means that the drug activates progesterone receptors to a certain degree upon binding. This triggers a cascade of biochemical reactions that result in the suppression of prostaglandin production. This, in turn, relieves symptoms such as pain and bleeding. Modulating progesterone by taking vilaprisan might help in treating endometriosis over the long term. Phase I and II studies give encouraging results on the efficacy of vilaprisan at different doses. Like other SPRMs, vilaprisan induces benign changes of endometrium (PR modulator-associated endometrial changes, PAECs). These disappear as treatment is discontinued. Unlike GnRHa treatment, neither UPA nor vilaprisan induce hypoestrogenism and associated symptoms. Phase III studies are ongoing to confirm efficacy and safety of vilaprisan in long-term treatment of symptomatic fibroids.