Plasminogen (human) as intravenous infusion is in clinical development for people with hypoplasminogenemia. Hypoplasminogenemia is an ultra-rare, chronic, genetic condition associated with inflamed growths on the mucous membranes, the moist tissues that line body openings such as the eye, mouth, nasopharynx, trachea, and female genital tract. The growths are caused by the deposition of fibrin (a protein involved in blood clotting) and by inflammation. Growths can lead to severe medical problems including vision loss, ulcers of the gastrointestinal tract, and breathing difficulties caused by obstruction of the airway.
The medicinal product contains purified plasminogen extracted from human blood. Plasminogen is a naturally occurring protein that is primarily synthesized by the liver and circulates in the blood. Activated plasminogen, plasmin, is a fundamental component of the fibrinolytic system and is the main enzyme involved in the breaking down of blood clots and clearance of excess fibrin. Plasminogen is therefore vital in wound healing, cell migration, tissue remodelling, the formation of new blood vessels, and the development of embryos. When administered to patients who lack working plasminogen of their own, this plasma-derived protein replacement therapy is expected to replace the missing protein in their blood and correct the symptoms of the condition. If licensed, it may offer the first commercially available treatment option for patients with hypoplasminogenemia.
Romiplostim is a medicinal product that is being developed for the treatment of adult patients with idiopathic thrombocytopenic purpura (ITP) who are refractory to other treatments. ITP is the condition of having a low platelet count due to unknown cause. It is also known as immune thrombocytopenic purpura. Many people with ITP do not have symptoms, however people with very low platelet count can have symptoms such as pin prick rash, easy bruising, nosebleeds, gum bleeds, black mouth blisters, fatigue, and heavy periods. Most of the currently available treatments have significant side effects with some treatments leaving patients are at increased risk of infections.