Fig. 1.
Icon array depicting risk associated with the 2 genotypes. The figure shows one page from the 20-page information brochure that was developed to explain to participants what genetic testing is, what GSTM1 is, and how GSTM1 may be associated with lung cancer risk, as well as the risks, benefits and limitations of GSTM1 genetic testing for lung cancer risk. As the figure illustrates, here participants were informed that absolute risk of developing lung cancer if missing GSTM1 was estimated to be about 11 out of 100 (or 11%), and that absolute risk of developing lung cancer if GSTM1 is present was estimated to be about 9 out of 100 (or 9%).