HSP90AB1 and lung cancer: As shown in Table 4, the cut-off value of serum Hsp90-beta for differentiating lung cancer patients from control individuals located in the segment of 1.2–1.4 ng/mL and 95% confidence interval (CI) were 3.254 to 161.134; the cut-off value of MPE Hsp90-beta located in the segment of 1.6–1.8 ng/mL and 95% CI were 3.19 to 36.98.