Complement Component 2 Deficiency, also known as c2 deficiency, is related to macular degeneration, age-related, 14 and hypersensitivity reaction type iii disease. An important gene associated with Complement Component 2 Deficiency is C2 (Complement C2), and among its related pathways/superpathways are Complement cascade and Diseases of hemostasis. Affiliated tissues include spinal cord and skin, and related phenotypes are purpura and systemic lupus erythematosus