Screening for High Frequency Malignant Disease

Inclusion Criteria:

• Subjects aged 50-80 years at time of consent

• Increased risk of lung cancer defined by: at least 20 pack-year smoking history andcurrently smoke or have quit within the past 15 years

• Undergoing or intended to undergo low dose CT scan of the chest for lung cancerscreening

• Willing to consent to the investigational blood draw during index LDCT screeningvisit and before any invasive procedures or treatment for lung cancer diagnosis

• Willing to consent to a 1-year and additional follow-up per protocol

Exclusion Criteria:

1. Subject has quit smoking for 15 or more years

2. Subject has less than 20 pack-year smoking history

3. Subject has a health problem that substantially limits life expectancy and/or theability or willingness to have curative lung surgery

4. Subject undergoing low-dose CT scan of the chest for investigation of symptomssuspicious for lung cancer

5. Preexisting or history of lung cancer

6. Previously diagnosed high-risk lung lesion

7. History of any malignancy (subjects who have undergone surgical removal of skinsquamous cell cancer may be enrolled provided the procedure was completed at least 12 months prior to the date of provision of informed consent for the study)

8. Currently taking any anti-neoplastic or disease-modifying anti-rheumatic drugs

9. Currently receiving treatment for pneumonia

10. Any major physical trauma (e.g., disruption of tissue, surgery, organ transplant,blood product transfusion) within the 30 days leading up to the provision ofinformed consent

11. Known medical condition which, in the opinion of the investigator, should precludeenrollment into the study

12. Participation in a clinical research study in which an experimental medicationand/or medical procedure has been administered or may be administered within the 30days leading up to providing informed consent or may be administered through thetime of subject screening