This protocol is designed to collect a small amount of blood for extraction of DNA (genetic material) for the study of the genetic basis of lung disease. The study population will include individuals with known lung diseases and controls without lung disease. Individuals in the study population will be individuals at the Hamad Medical Corporation, Qatar (HMC), as well as other individuals recruited for this study. In this protocol, researchers will survey medical records of patients with chronic lung disease, in order to study the clinical characteristics of these individuals, and the researchers will collect blood to evaluate the genetic characteristics of individuals with chronic lung diseases including asthma, and COPD (chronic obstructive pulmonary disease), pulmonary fibrosis, and lung cancer. The researchers will also collect blood samples of individuals without lung disease to serve as control.