TP53 and neoplasm: Due to the low number of positive reactions in cfDNA samples, no relevant correlation was observed between the %mutation of TP53 p.R273H identified in tumor DNA and cfDNA samples (Spearman’s rho = −0.230, p = 0.121 and Spearman’s rho = −0.134, p = 0.368 when >0% and >0.1% cutoffs were used for a positive reaction).