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DRUG CLASS:

Selective androgen receptor modulator

1m
Polypharmacological profiling across protein target families and cellular pathways using the multiplexed cell-based assay platform safetyProfiler reveals efficacy, potency and side effects of drugs. (PubMed, Biomed Pharmacother)
For example, the neuroleptics clozapine, paliperidone, and risperidone potently inhibited primary targets DRD2 and HTR2A as well as cAMP and calcium pathways...Additionally, precise potency data for LY2452473, an androgen receptor antagonist, that completed a phase 2 clinical trial for prostate cancer, are presented. The non-selective kinase inhibitor staurosporine was observed to potently inactivate the two RTKs EGFR and ERBB4 as well as MAPK signaling, while eliciting stress-related cAMP responses. Our findings underscore the value of comprehensive profiling in elucidating the pharmacological properties of established and novel therapeutics, thereby facilitating the development of novel multi-target drugs with enhanced efficacy and selectivity.
Journal • Adverse events
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EGFR (Epidermal growth factor receptor) • ERBB4 (erb-b2 receptor tyrosine kinase 4) • DRD2 (Dopamine Receptor D2) • HTR2A (5-Hydroxytryptamine Receptor 2A)
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OPK 88004
2ms
Identification of biomarkers of response and the mechanism of action of a selective androgen receptor modulator in estrogen receptor-positive breast cancer patient-derived xenografts (EORTC-NCI-AACR 2024)
Adding the CDK4/6 inhibitor palbociclib enhanced the antitumor activity of EP0062 or fulvestrant in ESR1-mutant models but not in HER2-enriched or PTEN-mutant PDX models...EP0062 triggers an E2F1 downmodulation which mediates a potent antiproliferative activity. For EP0062-resistant tumors that remain ER-driven, the addition of palbociclib displays a potent antitumor effect.
Clinical
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HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • PIK3CA (Phosphatidylinositol-4,5-bisphosphate 3-kinase catalytic subunit alpha) • PTEN (Phosphatase and tensin homolog) • AR (Androgen receptor) • FOXA1 (Forkhead Box A1) • HDAC2 (Histone deacetylase 2) • GATA3 (GATA binding protein 3) • E2F1 (E2F transcription factor 1)
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ER positive • PIK3CA mutation • PTEN mutation • ESR1 mutation • AR expression • ER expression • GATA3 mutation
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MSK-IMPACT
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Ibrance (palbociclib) • fulvestrant • vosilasarm (EP0062) • Undisclosed CDK4/6 inhibitor
3ms
Enrollment closed
|
Ostarine (enobosarm)
5ms
Enrollment change
|
Ostarine (enobosarm)
7ms
Enrollment open
|
Ostarine (enobosarm)
8ms
Trial termination • Metastases
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ER (Estrogen receptor) • AR (Androgen receptor)
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ER positive • AR positive
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Ostarine (enobosarm)
9ms
New P2 trial
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Ostarine (enobosarm)
9ms
Enrollment change
|
HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • AR (Androgen receptor)
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HER-2 negative
|
Ibrance (palbociclib) • everolimus • Verzenio (abemaciclib) • fulvestrant • exemestane • Ostarine (enobosarm)
9ms
Trial completion • Metastases
|
HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • PGR (Progesterone receptor) • AR (Androgen receptor)
|
HER-2 negative • AR positive • ER expression • PGR expression
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Keytruda (pembrolizumab) • Ostarine (enobosarm)
9ms
Activity and safety of enobosarm, a novel, oral, selective androgen receptor modulator, in androgen receptor-positive, oestrogen receptor-positive, and HER2-negative advanced breast cancer (Study G200802): a randomised, open-label, multicentre, multinational, parallel design, phase 2 trial. (PubMed, Lancet Oncol)
Enobosarm has anti-tumour activity in patients with ER-positive, HER2-negative advanced breast cancer, showing that AR activation can result in clinical benefit, supporting further clinical investigation of selective AR activation strategies for the treatment of AR-positive, ER-positive, HER2-negative advanced breast cancer.
P2 data • Journal • Metastases
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HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor)
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ER positive • HER-2 negative • AR positive • ER positive + HER-2 negative
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Ostarine (enobosarm)
over1year
In vitro anti-carcinogenic effect of andarine as a selective androgen receptor modulator on MIA-PaCa-2 cells by decreased proliferation and cell-cycle arrest at G0/G1 phase. (PubMed, Biochem Biophys Res Commun)
Furthermore, we established that the anti-carcinogenic activity of andarine is not mediated by the PI3K/AKT/mTOR signaling pathway, a crucial regulator of cell survival. Our findings suggest that andarine might be considered as a prospective drug for PC.
Preclinical • Journal
|
CDKN1A (Cyclin-dependent kinase inhibitor 1A)
over1year
Enrollment open • Metastases
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HER-2 (Human epidermal growth factor receptor 2)
|
HER-2 negative
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vosilasarm (EP0062)
over1year
Pembrolizumab and Enobosarm in Treating Patients With Androgen Receptor Positive Metastatic Triple Negative Breast Cancer (clinicaltrials.gov)
P2, N=18, Active, not recruiting, City of Hope Medical Center | Trial completion date: Jan 2023 --> Dec 2023
Trial completion date • Metastases
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HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor) • PGR (Progesterone receptor) • AR (Androgen receptor)
|
HER-2 negative • AR positive • ER expression • PGR expression
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Keytruda (pembrolizumab) • Ostarine (enobosarm)
over1year
A Selective Androgen Receptor Modulator, S4, Displays Robust Anti-cancer Activity on Hepatocellular Cancer Cells by Negatively Regulating PI3K/AKT/mTOR Signaling Pathway. (PubMed, Gene)
Since PI3K/AKT/mTOR signaling is frequently activated in HCC and contributes to its aggressiveness and poor prognosis, its negative regulation by the downregulation of critical components via S4 was a prominent finding. Further studies are necessary to investigate the S4 action mechanism and anti-tumorigenic capacity in in-vivo.
Journal
almost2years
Pharmacological targeting of androgen receptor elicits context-specific effects in estrogen receptor-positive breast cancer. (PubMed, Cancer Res)
However, both a selective AR agonist (RAD140) and an AR inhibitor (enzalutamide, ENZ) have shown a therapeutic effect on ER+ breast cancer, so the potential for clinical application of AR-targeting therapy for ER+ breast cancer is still in dispute. In contrast, RAD140 activated AR signaling and suppressed AR-high tumor growth by deregulating ERα expression and blocking ERα function. Overall, analysis of the dynamic efficacies and outcomes of AR agonist and antagonist in the presence of different AR and ERα levels reveals regulators of response and supports the clinical investigation of ENZ in selected ER+ tumors with a low AR/ER ratio and AR agonists in tumors with a high AR/ER ratio.
Journal
|
ER (Estrogen receptor)
|
ER positive • AR expression • AR underexpression
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Xtandi (enzalutamide capsule) • vosilasarm (EP0062)
2years
New P1/2 trial • Metastases
|
HER-2 (Human epidermal growth factor receptor 2)
|
HER-2 negative
|
vosilasarm (EP0062)
2years
A phase 1/2 study to evaluate the safety and efficacy of EP0062, an oral Selective Androgen Receptor Modulator (SARM), for the treatment of AR+/HER2-/ER+ advanced breast cancer (SABCS 2022)
Clinic follow-up will be at 2 and 4 weeks, then every 4 weeks until disease progression. Recruitment is scheduled to initiate in Q4 2022.
Clinical • P1/2 data
|
HER-2 (Human epidermal growth factor receptor 2) • ER (Estrogen receptor)
|
HER-2 negative • AR expression
|
vosilasarm (EP0062)