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Essay On Sunitinib

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Ravaud et al. [16] to determine the efficacy of sunitinib in refractory advanced TCs. A response rate of 8 % in DTC patients and 13 % in MTC patients. Furthermore, 67 % of DTC patients and 87 % of MTC patients showed disease stabilization. In a second phase II trial, Cohen et al. [17] reported a 13 % RR and a 68 % stable disease rate in patients with DTC. In MTC patients, responses were observed in 43 and 83 % of patients presented stable disease. Preliminary analysis from a third phase II trial showed PR or stable disease for at least 12 weeks in 17 % of DTC and 38 % in MTC patients [18]. Imatinib is a TKI that garnered much attention for its highly favorable effect on chronic myeloid leukemia and has inhibitory action against PDGFR-a and …show more content…

[23], 35 patients with metastatic and progressive MTC; five patients attained PR with median PFS and OS 9.4 and 19.9 months, respectively. There was one death potentially treatment-related. Vandetanib is a multi-targeted TKI with potent activity against RET, EGFR and VEGFR with potent anti-angiogenic effects [24]. It had received FDA approval for treatment of advanced MTC in 2012 based on the phase III RCT lead by Wells et al. [25], which showed a promising therapeutic efficacy. In these trial, 331 patients with advanced MTC were randomly assigned to vandetanib versus placebo with crossover was allowed after progression in the placebo arm. PFS was significantly superior in vandetanib arm versus placebo arm with HR of 0.35. Also, a statistically significant higher RR and better disease control rate were observed in vandetanib arm versus placebo arm (45 vs. 13 %). Initially, no overall survival benefit was seen, and this may be due to cross over from placebo to vandetanib arm upon disease progression. The AEs were generally tolerable, but 12 % of patients stopped the drug due to intolerability. The most common AEs were diarrhea (56 %), skin rash ([50 %), nausea and vomiting (47 %), hypertension (10 %) and QTc prolongation in 8 % of cases (see Table 1). Cabozantinib is a TKI with activity against VEGFR 1–3, MET and RET. It had received regulatory approval for first-line treatment of advanced MTC after a phase III international

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