We have previously reported results on DNA methylation of RASSF1A, RASSF10, APC, WIF-1, BRMS1, SLFN11, RARβ, SHISA3, and FOXA1 in plasma-cfDNA and paired CTCs of NSCLC patients during osimertinib therapy. Here, RARB is linked to non-small cell lung carcinoma.