Pulmonary Hypertension, Chronic Thromboembolic, Without Deep Vein Thrombosis, is also known as chronic thromboembolic pulmonary hypertension. An important gene associated with Pulmonary Hypertension, Chronic Thromboembolic, Without Deep Vein Thrombosis is CTEPH1 (Pulmonary Hypertension, Chronic Thromboembolic, Without Deep Vein Thrombosis, Susceptibility To). The drugs Riociguat and Warfarin have been mentioned in the context of this disorder. Affiliated tissues include heart and lung.