^Barra F, Romano A, Grandi G, Facchinetti F, Ferrero S (June 2019). "Future directions in endometriosis treatment: discovery and development of novel inhibitors of estrogen biosynthesis". Expert Opin Investig Drugs. 28 (6): 501–504. doi:10.1080/13543784.2019.1618269. PMID31072144.
^Perrone U, Evangelisti G, Laganà AS, Bogliolo S, Ceccaroni M, Izzotti A, Gustavino C, Ferrero S, Barra F (December 2023). "A review of phase II and III drugs for the treatment and management of endometriosis". Expert Opin Emerg Drugs. 28 (4): 333–351. doi:10.1080/14728214.2023.2296080. PMID38099328.
^ abcdRižner TL, Romano A (2023). "Targeting the formation of estrogens for treatment of hormone dependent diseases-current status". Front Pharmacol. 14: 1155558. doi:10.3389/fphar.2023.1155558. PMC10175629. PMID37188267. Several compounds with inhibitory action on the enzyme HSD17B1 have been developed and one steroidal compound, a competitive HSD17B1 inhibitor (OG-6219) recently entered the clinical phase for endometriosis [...] and it is in the preclinical phase for endometrial and breast cancer (Husen et al., 2006a; Husen et al., 2006b; Konings et al., 2018b; Jarvensivu et al., 2018; Xanthoulea et al., 2021). [...] Only the C15 estrone derivative developed by Organon Finland, former Forendo pharma (compound FOR-6219/OR-6219) reached the clinical phase for endometriosis with three clinical trials registered in the database Clinical Trails (Table 2). Phase 1 and 1b trials NCT04686669 and NCT03709420 determined the bio-availability of the compound administered orally as gelatine capsule in 12 subjects (NCT04686669) and then the safety, tolerability, food interactions, the pharmacokinetics and pharmacodynamics of escalating doses of the drug in 87 subjects (NCT03709420). The phase 2 randomized, double-blind, Elena study (NCT05560646) is currently recruiting patients and aims at evaluating the efficacy and safety of OG-6219 in women with moderate to severe endometriosis [...]