Bavdegalutamide (ARV110; ARV-110) is an orally bioavailable PROTAC-based Androgen Receptor (AR) degrader with potential anticancer activity. May be used for the treatment of metastatic castration-resistant prostate cancer (mCRPC).

Physicochemical Properties

Molecular Formula	C41H43CLFN9O6
Molecular Weight	812.2882
Exact Mass	811.3
Elemental Analysis	C, 60.62; H, 5.34; Cl, 4.36; F, 2.34; N, 15.52; O, 11.82
CAS #	2222112-77-6
PubChem CID	134414307
Appearance	Light yellow to yellow solid powder
LogP	3.9
Hydrogen Bond Donor Count	2
Hydrogen Bond Acceptor Count	13
Rotatable Bond Count	9
Heavy Atom Count	58
Complexity	1590
Defined Atom Stereocenter Count	0
InChi Key	CLCTZVRHDOAUGJ-UHFFFAOYSA-N
InChi Code	InChI=1S/C41H43ClFN9O6/c42-31-19-28(4-1-25(31)22-44)58-27-5-2-26(3-6-27)45-38(54)33-7-9-36(48-47-33)51-13-11-24(12-14-51)23-49-15-17-50(18-16-49)35-21-30-29(20-32(35)43)40(56)52(41(30)57)34-8-10-37(53)46-39(34)55/h1,4,7,9,19-21,24,26-27,34H,2-3,5-6,8,10-18,23H2,(H,45,54)(H,46,53,55)
Chemical Name	N-[4-(3-chloro-4-cyanophenoxy)cyclohexyl]-6-[4-[[4-[2-(2,6-dioxopiperidin-3-yl)-6-fluoro-1,3-dioxoisoindol-5-yl]piperazin-1-yl]methyl]piperidin-1-yl]pyridazine-3-carboxamide
Synonyms	ARV-110; ARV 110; ARV110; ARV-110; 3-Pyridazinecarboxamide, N-[trans-4-(3-chloro-4-cyanophenoxy)cyclohexyl]-6-[4-[[4-[2-(2,6-dioxo-3-piperidinyl)-6-fluoro-2,3-dihydro-1,3-dioxo-1H-isoindol-5-yl]-1-piperazinyl]methyl]-1-piperidinyl]-; ARV110; N-(trans-4-(3-Chloro-4-cyanophenoxy)cyclohexyl)-6-(4-((4-(2-(2,6-dioxopiperidin-3-yl)-6-fluoro-1,3-dioxoisoindolin-5-yl)piperazin-1-yl)methyl)piperidin-1-yl)pyridazine-3-carboxamide; Bavdegalutamide [INN]; Bavdegalutamide [USAN]; Bavdegalutamide;
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

Targets	Androgen receptor (AR)-targeting PROTAC
ln Vitro	In all examined cell lines, bavdegalutamide totally destroys AR, with a 50% degradation concentration (DC50) of less than 1 nM [1]. In LNCaP cells, bavdegalutamide (0.01 nM-300 nM) degrades AR in a dose-dependent manner [1]. The degradation of AR in VCaP cells is caused in a time-dependent manner by bavdegalutamide (10 nM; 0.5-24 hours) [2]. At low nanomolar doses, bavdegalutamide (10-1000 nM) causes apoptosis, suppresses AR-dependent cell growth, and inhibits the production of the AR target gene PSA [2]. In the hyperandrogenic milieu of VCaP cells (R1881, 100 nM), bavdegalutamide (0.01 nM-100 nM) degrades clinically relevant mutant AR proteins (WT AR, F876L, T877A, M896V, and H874V) while maintaining its activity [2].
ln Vivo	Bavdegalutamide (oral gavage; 1 mg/kg; QD) displays better than 90% breakdown of AR in vivo. Bavdegalutamide also revealed strong inhibitory effects on tumor growth and AR signaling in LNCaP, VCaP, and prostate cancer patient-derived xenograft (PDX) models [2]. Bavdegalutamide (oral gavage; 3 or 10 mpk; 30 days) demonstrated in vivo effectiveness and decrease in AR target gene expression in a long-term, castrated, enzalutamide-resistant VCaP tumor model. The TGIs for the 3 mpk and 10 mpk dosages were 70% and 60%, respectively. respectively[2].
Cell Assay	The Androgen Receptor (AR) remains the principal driver of castration-resistant prostate cancer during the transition from a localized to metastatic disease. Most patients initially respond to inhibitors of the AR pathway, but the response is often short-lived. The majority of patients progressing on enzalutamide or abiraterone exhibit genetic alterations in the AR locus, either in the form of amplifications or point mutations in the AR gene. Given these mechanisms of resistance, our goal is to eliminate the AR protein using the PROteolysis TArgeting Chimera (PROTAC) technology. Here we report an orally bioavailable small molecule ARV-110 that leads to ubiquitination and degradation of AR. ARV-110 completely degrades AR in all cell lines tested, with an observed 50% degradation concentration (DC50) < 1 nM. PROTAC-mediated AR degradation suppresses the expression of the AR-target genes PSA and FKBP5, inhibits AR-dependent cell proliferation, and induces potent apoptosis in VCaP cells. ARV-110 degrades clinically relevant mutant AR proteins and retains activity in a high androgen environment[1].
Animal Protocol	In mouse xenograft studies, greater than 90% AR degradation is observed at a 1 mg/kg PO QD dose. Significant inhibition of tumor growth and AR signaling can be achieved in both an intact and castrate setting. Further, ARV-110 demonstrates in vivo efficacy and reduction of oncogenic Erg protein in a long term, castrate, enzalutamide-resistant VCaP tumor model. DMPK and exploratory toxicology studies show robust oral, dose proportional drug exposure in rodent and non-rodent species. In summary, we report preclinical data on ARV-110, an orally bioavailable androgen receptor PROTAC degrader that demonstrates efficacy in enzalutamide-resistant prostate cancer.[1] In mouse xenograft studies, greater than 90% AR degradation is observed at a 1 mg/kg PO QD dose. Significant inhibition of tumor growth and AR signaling has been achieved in LNCaP, VCaP and prostate cancer patient derived xenograft (PDX) models. Notably, ARV-110 demonstrates in vivo efficacy and reduction of AR-target gene expression in a long term, castrate, enzalutamide-resistant VCaP tumor model.[2]
References	[1]. ARV-110: An androgen receptor PROTAC degrader for prostate cancer. American Association for Cancer Research. 2018. 78 (13): pp. 5236. [2]. ARV-110: an oral androgen receptor PROTAC degrader for prostate cancer. GU ASCO 2019.
Additional Infomation	Bavdegalutamide is an orally available selective androgen receptor (AR)-targeted protein degrader, using the proteolysis targeting chimera (PROTAC) technology, with potential antineoplastic activity. Bavdegalutamide is composed of an AR ligand attached to an E3 ligase recognition moiety. Upon oral administration, bavdegalutamide targets and binds to the AR ligand binding domain. E3 ligase is recruited to the AR by the E3 ligase recognition moiety and the AR target protein is tagged by ubiquitin. This causes ubiquitination and degradation of AR by the proteasome. This prevents the expression of AR target genes and halts AR-mediated signaling. This results in an inhibition of proliferation in AR-overexpressing tumor cells. In addition, the degradation of the AR protein releases the ARV-110 is released and can bind to additional AR target proteins. AR plays a key role in the proliferation of castration-resistant prostate cancer cells (CRPC).

Solubility Data

Solubility (In Vitro)

DMSO : ~26.67 mg/mL (~32.83 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 0.79 mg/mL (0.97 mM) (saturation unknown) in 10% DMSO + 40% PEG300 +5% Tween-80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 7.9 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 + to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: 10 mg/mL (12.31 mM) in 50% PEG300 50% Saline (add these co-solvents sequentially from left to right, and one by one), suspension solution; with ultrasonication (<60°C). Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.2311 mL	6.1554 mL	12.3109 mL
	5 mM	0.2462 mL	1.2311 mL	2.4622 mL
	10 mM	0.1231 mL	0.6155 mL	1.2311 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.