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Overall survival (OS) by treatment type: systemic therapy compared with best supportive care (BSC) in (A) 2007 (median OS: 11.7 months with systemic therapy vs. 3.2 months with BSC, p < 0.001) and (B) 2011 (median OS: 11.5 months with systemic therapy vs. 3.6 months with BSC, p < 0.001).
