Complement component 3 deficiency
Synonyms: C3 deficiency
Complement component 3 deficiency is a rare genetic primary immunodeficiency characterized by susceptibility to infection (mainly by gram negative bacteria) due to extremely low C3 plasma levels. Patients typically present recurrent episodes of sinusitis tonsillitis and/or otitis as well as upper and lower respiratory tract infections (including pneumonia) and skin infections such as erythema multiforme. Autoimmune disease resembling systemic lupus erythematosus and mesangiocapillary or membranoproliferative glomerulonephritis may develop resulting in renal failure.
Data from Orphanet are used to provide information on a disease's name, synonym(s), and overview.
Orphadata: Free access data from Orphanet. © INSERM 1999. Available on http: //www.orphadata.org. Data version September 2023.
Newly diagnosed with
Complement component 3 deficiency?
Our RARE Concierge Services Guides are available to assist you by providing information, resources and connections as you navigate your rare disease journey.
Immune Deficiency Foundation
To improve the diagnosis, treatment and quality of life of people affected by primary immunodeficiency.
Care-for-Rare America Inc
To establish a global alliance in order to identify the genetic causes of rare diseases and develop effective treatments, following a three-stage approach: recognize, understand, cure.
Ukrainian Association of Pediatric Immunology
Development of pediatric and clinical immunology in Ukraine. Raising awareness of inborn errors of immunity in Ukraine and rare immune diseases; Advocacy campaigns supporting patients with rare immune diseases and their treatment plans; Scientific research; Sharing knowledge about immunoprophylaxis; Advocacy campaigns supporting immunoprophylaxis.
Accessia Health pioneered the patient assistance model for people living with chronic medical conditions. We provide financial assistance to pay for prescriptions, medical treatments and expenses, travel and insurance premiums. Our program services include healthcare education, specialized legal services, and case management. We’re leveraging our three decades of our entrepreneurial spirit to expand patient assistance support to serve today’s healthcare consumers. Serving diverse populations is our #1 goal and we seek partners who share our belief that all people deserve to have access to healthcare. Over $1.1 billion has been distributed to patients throughout the country, helping them navigate their way through the complexities of the healthcare system. You can help us do even more.
Syndromes Without A Name (SWAN) Australia
Provide information, support and advocacy to families caring for a child with an undiagnosed or rare genetic condition.
For a list of clinical trials in this disease area, please click here.