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Ref Type | Journal Article | ||||||||||||
PMID | (32554609) | ||||||||||||
Authors | Hong DS, Parikh A, Shapiro GI, Varga A, Naing A, Meric-Bernstam F, Ataman Ö, Reyderman L, Binder TA, Ren M, Liu M, Dayal S, Siu AY, Sachdev P, Xu L, Bhagawati-Prasad V, Tchakov I, Ooi CE, Bao X, Marabelle A | ||||||||||||
Title | First-in-human phase I study of immunomodulatory E7046, an antagonist of PGE2-receptor E-type 4 (EP4), in patients with advanced cancers. | ||||||||||||
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Abstract Text | E7046 is a highly selective, small-molecule antagonist of the E-type prostanoid receptor 4 (EP4) for prostaglandin E2, an immunosuppressive mediator of the tumor immune microenvironment. This first-in-human phase 1 study assessed the safety, tolerability, pharmacokinetics, pharmacodynamics, maximum tolerated dose (MTD) and recommended phase 2 dose of E7046.This first-in-human study enrolled 30 patients with advanced tumors of cancer types associated with high levels of myeloid infiltrates. E7046 was administered orally once-daily in sequential escalating dose cohorts (125, 250, 500, and 750 mg) with ≥6 patients per cohort. Tumor assessments were performed every 6 weeks. Paired tumor biopsies and blood samples, before and on treatment, were collected for pharmacokinetic and pharmacodynamic characterization of the treatment.No dose-limiting toxicities were observed, and the MTD was not reached. E7046 had an elimination half-life (t1/2) of 12 hours, and drug exposure increased dose-dependently from 125 to 500 mg. Target modulation by E7046 was supported by changes in genes downstream of EP4 with concurrent enhanced antitumoral immune responses. A best response of stable disease (per irRECIST) was reported in 23% of patients treated with E7046 (n=30) (125 mg: n=2; 250 mg: n=2; 750 mg: n=3). Over half (4/7) of the patients with stable disease had treatment duration of 18 weeks or more, and three patients (3/15; 20%) achieved metabolic responses.In this first-in-human study, E7046 administered orally once daily demonstrated manageable tolerability, immunomodulatory effects, and a best response of stable disease (≥18 weeks) in several heavily pretreated patients with advanced malignancies. The 250 and 500 mg doses are proposed for further development in the combination setting.NCT02540291. |
Molecular Profile | Treatment Approach |
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Gene Name | Source | Synonyms | Protein Domains | Gene Description | Gene Role |
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Drug Name | Trade Name | Synonyms | Drug Classes | Drug Description |
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E7046 | AN0025|E-7046|E 7046 | AN0025 (E7046) is a small molecule inhibitor of E2 receptor type 4 (EP4), which may result in antitumor activity including inhibition of cell proliferation and reduced tumor growth (Mol Cancer Ther 2015;14(12 Suppl 2):Abstract nr B198, PMID: 32554609). |
Gene | Variant | Impact | Protein Effect | Variant Description | Associated with drug Resistance |
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Molecular Profile | Indication/Tumor Type | Response Type | Therapy Name | Approval Status | Evidence Type | Efficacy Evidence | References |
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