Sabizabulin

Chemical compound

Investigational

Identifiers

IUPAC name

[2-(1H-indol-3-yl)-1H-imidazol-5-yl]-(3,4,5-trimethoxyphenyl)methanone

CAS Number

1332881-26-1

PubChem CID

53379371

ChemSpider

28642581

UNII

37L1JX37J5

KEGG

D12519

ChEMBL

ChEMBL2163631

Chemical and physical dataFormulaC₂₁H₁₉N₃O₄Molar mass377.400 g·mol⁻¹3D model (JSmol)

Interactive image

SMILES

COC1=CC(=CC(=C1OC)OC)C(=O)C2=CN=C(N2)C3=CNC4=CC=CC=C43

InChI

InChI=1S/C21H19N3O4/c1-26-17-8-12(9-18(27-2)20(17)28-3)19(25)16-11-23-21(24-16)14-10-22-15-7-5-4-6-13(14)15/h4-11,22H,1-3H3,(H,23,24)
Key:WQGVHOVEXMOLOK-UHFFFAOYSA-N

Sabizabulin is an investigational new drug that is being evaluated for the treatment of castration-resistant prostate cancer^[4] and in SARS-CoV-2 (COVID-19) infections.^[5] It is a tubulin polymerization inhibitor.^[6]^[7]

Sabizabulin is chemical compound from the group of indole and imidazole derivatives that was first reported in 2012 by Dalton, Li, and Miller.^[8]

Pharmacology

Pharmacokinetics

Sabizabulin is not a substrate of P-glycoprotein (Pgp), an efflux pump that, when overexpressed, can confer resistance to taxanes, a group of widely used cancer therapeutics.

Mechanism of action

Sabizabulin, as an orally available molecule, acts on microtubules, a component of the cytoskeleton. It binds to the colchicine binding site on the beta subunit of tubulin, as well as a novel site on the alpha subunit, and causes both to crosslink, thus depolymerizing microtubules and preventing their polymerization.^[9] By preventing mitotic spindle formation, this directly inhibits mitosis of tumor cells and endothelial cells attempting to form new blood vessels to feed them. In parallel, microtubule-mediated trafficking of cellular components (including androgen receptors into the nucleus), thus, a potential anti-androgen agent. The transport of viral particles (including SARS-CoV-2) may also be inhibited. These activities can inhibit viral replication and assembly. Inhibition of tubulin polymerization can also inhibit the release of pro-inflammatory cytokines and disrupt the activities of inflammatory cells.^[10]

Research

COVID-19 therapy

In a phase III study on the treatment of severe courses of COVID-19,^[3]^[11] sabizabulin reduced mortality by 55% according to the manufacturer.^[12] Because of the high efficacy, the test phase was stopped prematurely so that the drug no longer had to be withheld from the placebo control group.^[13]^[14]^{[medical citation needed]}

References

^ "Substance Name: Sabizabulin". ChemIDplus. Retrieved 1 May 2022.
^ "Sabizabulin for COVID-19". Veru Inc. 14 January 2022. Retrieved 1 May 2022.
^ ^a ^b "VERU-111 in the Treatment of SARS-Cov-2 Infection by Assessing Its Effect on the Proportion of Patients Who Die on Study". ClinicalTrials.gov (Press release). 13 April 2021. Retrieved 1 May 2022.
^ Markowski MC, Tutrone R, Pieczonka C, Barnette KG, Getzenberg RH, Rodriguez D, et al. (July 2022). "A Phase Ib/II Study of Sabizabulin, a Novel Oral Cytoskeleton Disruptor, in Men with Metastatic Castration-resistant Prostate Cancer with Progression on an Androgen Receptor-targeting Agent". Clinical Cancer Research. 28 (13): 2789–2795. doi:10.1158/1078-0432.CCR-22-0162. PMC 9774054. PMID 35416959. S2CID 248128050.
^ rme (13 April 2022). "COVID-19: Krebsmittel Sabizabulin halbiert Sterberate bei schweren Erkrankungen" [COVID-19: Cancer drug Sabizabulin halves death rate in severe cases]. aerzteblatt.de. Retrieved 14 April 2022.
^ "Sabizabulin - Veru Healthcare". AdisInsight. Springer Nature Switzerland AG.
^ Mahmud F, Deng S, Chen H, Miller DD, Li W (December 2020). "Orally available tubulin inhibitor VERU-111 enhances antitumor efficacy in paclitaxel-resistant lung cancer". Cancer Letters. 495: 76–88. doi:10.1016/j.canlet.2020.09.004. PMC 7669640. PMID 32920198.
^ Li CM, Lu Y, Chen J, Costello TA, Narayanan R, Dalton MN, et al. (November 2012). "Orally bioavailable tubulin antagonists for paclitaxel-refractory cancer". Pharmaceutical Research. 29 (11): 3053–3063. doi:10.1007/s11095-012-0814-5. PMC 3646298. PMID 22760659.
^ "Sabizabulin for Breast Cancer". Veru Inc. Retrieved 17 May 2022.
^ "Sabizabulin". NCI Thesaurus. U.S. National Cancer Institute. Code C158517. Retrieved 14 April 2022.
^ "Veru Enrolls First Patient in Phase 3 Clinical Trial of Sabizabulin (VERU-111) in High Risk Hospitalized COVID-19 Patients". Veru Inc. 19 May 2021. Archived from the original on 1 May 2022. Retrieved 1 May 2022.
^ "Veru's Novel COVID-19 Drug Candidate Reduces Deaths by 55% in Hospitalized Patients in Interim Analysis of Phase 3 Study; Independent Data Monitoring Committee Halts Study Early for Overwhelming Efficacy". Veru Inc. (Press release). 11 April 2022. Archived from the original on 16 April 2022. Retrieved 30 April 2022.
^ Rabin R (11 April 2022). "New Drug Slashed Deaths Among Patients With Severe Covid, Maker Claims". The New York Times. Retrieved 21 April 2022.
^ "Veru Announces Oral Late-Breaking Presentation of Phase 2 Data of Sabizabulin for the Treatment of Hospitalized Severe COVID-19 Patients at High Risk for Acute Respiratory Distress Syndrome at the 32nd European Congress of Clinical Microbiology & Infectious Diseases" (Press release). Veru Inc. 25 April 2022. Retrieved 30 April 2022 – via GlobeNewswire.