Table 2

Epigenetic markers for the detection of lung cancer cells in the serum

Gene aberrantly methylatedOccurrence in tumor, no./total no. (%)Serum positive, no./total no. (%)
p16 9/22 (41)3/9 (33)
DAP kinase5/22 (23)4/5 (80)
GSTP12/22 (9)1/2 (50)
MGMT6/22 (27)4/6 (66)