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Alobresib (GS-5829) is a BET bromodomain inhibitor, which represents a highly effective therapeutics agent against recurrent/chemotherapy resistant uterine serous carcinoma (USC) overexpressing c-Myc[1]. BET bromodomain[1]

Alobresib (0.1 nM-100 μM; 72 hours) inhibits cell proliferation in primary uterine serous carcinoma (USC) lines[1]. Cell Proliferation Assay[1] Cell Line: Primary uterine serous carcinoma (USC) lines ARK1 and ARK2 cell lines

Alobresib (10 and 20 mg/kg; oral; twice-daily; for 28 days) impaires USC-ARK2 xenograft tumor growth in female CB17/lcrHsd-Prkd/scid mice. Alobresib exhibits a significantly slower rate of tumor growth in mice, compared with vehicle control and to mice undergoing daily treatment with JQ1 (50 mg/kg/day i.p.)[1]. Alobresib (10 and 20 mg/kg; oral; twice-daily; for 28 days) is well tolerated with no clear impact on body weight compared with vehicle control[1]. Animal Model: Female CB17/lcrHsd-Prkd/scid mice (15-19 g) bearing USC-ARK2 tumors[1]

[1]. Bonazzoli E, et al. Inhibition of BET Bromodomain Proteins with GS-5829 and GS-626510 in Uterine Serous Carcinoma, a Biologically Aggressive Variant of Endometrial Cancer. Clin Cancer Res. 2018 Oct 1;24(19):4845-4853.

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