The in vivo antitumor activity of ASP1235 was evaluated in a FLT3 positive THP-1 xenograft model. THP-1 cells were subcutaneously inoculated in the right frank of mice at 5 x10⁶ cells/head. The vehicle of each drug is shown as follows: ASP1235 (20 mM Histidine/L-Histidine-HCl, 5.5% trehalose dihydrate, 0.01% Polysorbate 20, pH6.0), venetoclax (60% phosal 50PG, 30% PEG400, 10% ethanol), azacitidine (PBS). ASP1235 was intravenously administrated to each mouse once per week. One day before ASP1235 treatment, each mouse received intraperitoneal injection of 20 mg/kg of nonspecific human IgG1 antibody. Venetoclax was orally administered daily at 100 mg/kg. Azacitidine was intravenously injected at 3 mg/kg for five consecutive days in the first week of treatment.

The in vivo antitumor activity of ASP1235 was evaluated in a FLT3 positive THP-1 xenograft model. THP-1 cells were subcutaneously inoculated in the right frank of mice at 5 x10⁶ cells/head. The vehicle of each drug is shown as follows: ASP1235 (20 mM Histidine/L-Histidine-HCl, 5.5% trehalose dihydrate, 0.01% Polysorbate 20, pH6.0), venetoclax (60% phosal 50PG, 30% PEG400, 10% ethanol), azacitidine (PBS). ASP1235 was intravenously administrated to each mouse once per week. One day before ASP1235 treatment, each mouse received intraperitoneal injection of 20 mg/kg of nonspecific human IgG1 antibody. Venetoclax was orally administered daily at 100 mg/kg. Azacitidine was intravenously injected at 3 mg/kg for five consecutive days in the first week of treatment.

The in vivo antitumor activity of ASP1235 was evaluated in a FLT3 positive THP-1 xenograft model. THP-1 cells were subcutaneously inoculated in the right frank of mice at 5 x10⁶ cells/head. The vehicle of each drug is shown as follows: ASP1235 (20 mM Histidine/L-Histidine-HCl, 5.5% trehalose dihydrate, 0.01% Polysorbate 20, pH6.0), venetoclax (60% phosal 50PG, 30% PEG400, 10% ethanol), azacitidine (PBS). ASP1235 was intravenously administrated to each mouse once per week. One day before ASP1235 treatment, each mouse received intraperitoneal injection of 20 mg/kg of nonspecific human IgG1 antibody. Venetoclax was orally administered daily at 100 mg/kg. Azacitidine was intravenously injected at 3 mg/kg for five consecutive days in the first week of treatment.

The in vivo antitumor activity of ASP1235 was evaluated in a FLT3 positive THP-1 xenograft model. THP-1 cells were subcutaneously inoculated in the right frank of mice at 5 x10⁶ cells/head. The vehicle of each drug is shown as follows: ASP1235 (20 mM Histidine/L-Histidine-HCl, 5.5% trehalose dihydrate, 0.01% Polysorbate 20, pH6.0), venetoclax (60% phosal 50PG, 30% PEG400, 10% ethanol), azacitidine (PBS). ASP1235 was intravenously administrated to each mouse once per week. One day before ASP1235 treatment, each mouse received intraperitoneal injection of 20 mg/kg of nonspecific human IgG1 antibody. Venetoclax was orally administered daily at 100 mg/kg. Azacitidine was intravenously injected at 3 mg/kg for five consecutive days in the first week of treatment.