Pertaining to complement deficiencies, there is no cure and the treatments for complement deficiencies vary widely. The best course of action for management is usually for a patient to treat the complement deficiency as an immune deficiency and get immunized against the microbe associated with their deficiency (or best candidate).
For complement deficiencies, there is no known treatment, and therapies vary widely. The best course of action usually includes treating them like immune deficiencies and receiving vaccinations against the specific microbes that cause these deficiencies (or their closest equivalents).