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. Author manuscript; available in PMC: 2010 Feb 11.
Published in final edited form as: Nat Med. 2007 Jul 31;14(9):985–990. doi: 10.1038/nm.1789

Figure 3. Recurrence-free survival, as detected by ctDNA and CEA.

Figure 3

(a) The difference in recurrence-free survival in subjects with detectable versus undetectable post-operative ctDNA levels (P = 0.006 by Mantel-Cox log-rank test). (b) The difference in recurrence-free survival in subjects with detectable versus undetectable post-operative CEA levels (P = 0.03 by Mantel-Cox log-rank test).