Abstract: Disclosed is the identification, provision and use of a panel of biomarkers that predict sensitivity or resistance to gefitinib and other EGFR inhibitors, and products and processes related thereto. Specifically, a method is described for selecting a cancer patient who is predicted to benefit from therapeutic administration of an EGFR inhibitor, an agonist thereof, or a drug having substantially similar biological activity as EGFR inhibitor. Also described is a method to identify molecules that interact with the EGFR pathway to allow or enhance responsiveness to EGFR inhibitors, as well as a plurality of polynucleotides or antibodies for the detection of the expression of genes that are indicative of sensitivity or resistance to EGFR inhibitors, an agonist thereof, or a drug having substantially similar biological activity as EGFR inhibitors. A method to identify a compound with the potential to enhance the efficacy of EGFR inhibitors is also described.

Abstract: The present invention provides a method for preventing or reducing the risk of cancer or the progression of premalignant dysplasia in a subject having a higher risk factor by administering a therapeutically effective amount of prostacyclin analog.

Abstract: Disclosed are methods to diagnose a patient that has a pulmonary disease, and particularly, pulmonary arterial hypertension, using biomarkers that are differentially regulated in the peripheral blood cells of patients with such disease as compared to individuals that do not have the disease. Also disclosed are methods to diagnose a patient that has idiopathic pulmonary arterial hypertension as compared to pulmonary arterial hypertension associated with secondary causes. Pluralities of nucleotides and antibodies useful in the invention are described. Methods of identifying compounds with the potential to treat pulmonary arterial hypertension (PAH) are also described.