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C4 Deficiency

MedGen UID:
859438
Concept ID:
C3899844
Disease or Syndrome

Definition

Lack of production of functional C4 protein, due to a genetic defect requiring homozygous loss of both the C4A and C4B genetic paralogs. Approximately 75% of patients with a C4 deficiency will develop a severe systemic lupus erythematosus at an early age. Patients also present with frequent sinopulmonary infections often with Streptococcus pneumoniae. [from NCI]

Professional guidelines

PubMed

Pollack MS, Heagney SD, Braun D Jr, O'Neill GJ
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Recent clinical studies

Etiology

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Diagnosis

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Atkinson JP
Ann Allergy 1979 Jun;42(6):348-52. PMID: 378041

Therapy

Richmond BW, Cole MB, Dash A, Eyler A, Boomershine CS
Am J Med 2011 May;124(5):414-7. doi: 10.1016/j.amjmed.2011.01.003. PMID: 21531230
Cohen RA, Bayliss G, Crispin JC, Kane-Wanger GF, Van Beek CA, Kyttaris VC, Avalos I, Yu CY, Tsokos GC, Stillman IE
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Rynes RI
Clin Rheum Dis 1982 Apr;8(1):29-47. PMID: 6288318
Atkinson JP
Ann Allergy 1979 Jun;42(6):348-52. PMID: 378041

Prognosis

Sontheimer RD
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Siddique ME, Ahmed S
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Montoliu J, Darnell A, Torras A, Revert L
J Am Geriatr Soc 1981 Mar;29(3):108-16. doi: 10.1111/j.1532-5415.1981.tb01971.x. PMID: 7204803

Clinical prediction guides

Wong MS, Chan GC, Ha SY, Lau YL
J Pediatr Hematol Oncol 2002 Nov;24(8):648-52. doi: 10.1097/00043426-200211000-00009. PMID: 12439037
Undeğer U, Başaran N
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Welch TR, Berry A, Beischel LS
Pediatr Nephrol 1987 Apr;1(2):136-9. doi: 10.1007/BF00849283. PMID: 3153269
Rittner C, Meier EM, Stradmann B, Giles CM, Köchling R, Mollenhauer E, Kreth HW
Immunogenetics 1984;20(4):407-15. doi: 10.1007/BF00345615. PMID: 6490109
Ghebrehiwet B, Silverberg M, Kaplan AP
J Exp Med 1981 Mar 1;153(3):665-76. doi: 10.1084/jem.153.3.665. PMID: 7252410Free PMC Article

Recent systematic reviews

Oprea Y, Antohi DR, Vague M, Delbourgo Patton C, Wu B, Ortega-Loayza AG
Am J Clin Dermatol 2024 Sep;25(5):701-716. Epub 2024 Jul 1 doi: 10.1007/s40257-024-00875-y. PMID: 38951460
Delplanque M, Galicier L, Oziol E, Ducharme-Bénard S, Oksenhendler E, Buob D, Grateau G, Boutboul D, Georgin-Lavialle S
J Allergy Clin Immunol Pract 2021 Feb;9(2):745-752.e1. Epub 2020 Sep 30 doi: 10.1016/j.jaip.2020.09.023. PMID: 33007500

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