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. 2022 Mar 9;219(4):e20210739. doi: 10.1084/jem.20210739

Figure 6.

Figure 6.

MEK inhibition with FeADC enables dose intensity in combination therapies. (A) Mouse body weight changes normalized to the baseline after the treatment with the vehicle, 30 mg/kg RMC-4550 monotherapy, or combinations comprising 30 mg/kg RMC-4550 combined with COBI at either 7.5 mg/kg or 10 mg/kg or RMC-4550 with comparable (equimolar) 12.5 mg/kg or 16 mg/kg doses of TRX-COBI. Error bars represent mean ± SEM, n = 6 mice/group and analyzed by a two-sample t-test. **, P < 0.01. (B) Tumor volume changes of PDX TM00186 tumors after the treatments in D. Error bars represent mean ± SEM, n = 6 mice/group and analyzed by one-way ANOVA; **, P < 0.01. (C) Western blot for phosphorylated ERK of tumor xenografts and spleen from NSG mice after treatment with vehicle, RMC 30 mg per kg (mpk) + COBI 10 mpk or RMC 30 mpk + TRX-COBI 16 mpk in the cohort of A and B. (D) Quantification of phosphorylated ERK expression in C, error bars represent mean ± SEM, and analyzed by a two-sample t-test. *, P < 0.1; **, P < 0.01.