Imatinib in pulmonary arterial hypertension patients with inadequate response to established therapy.

The article focuses on the study entitled, "Imatinib in pulmonary arterial hypertension patients with inadequate response to established therapy," by H. A. Ghofrani, N. W. Morrell, and M. M. Hoeper, which looks into the effectiveness of imatinib in the treatment of patients with pulmonary arterial hypertension.