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Complement component C1s deficiency(C1SD)

MedGen UID:
462428
Concept ID:
C3151078
Disease or Syndrome
Synonyms: C1s deficiency; Complement 1s deficiency
 
Gene (location): C1S (12p13.31)
 
Monarch Initiative: MONDO:0013419
OMIM®: 613783

Definition

Complement component C1s deficiency (C1SD) is an autosomal recessive disorder characterized by the presence of autoimmune diseases including a systemic lupus erythematosus-like disorder, Hashimoto thyroiditis, autoimmune hepatitis, and chronic glomerulonephritis (Inoue et al., 1998, Dragon-Durey et al., 2001). [from OMIM]

Clinical features

From HPO
Hepatitis
MedGen UID:
5515
Concept ID:
C0019158
Disease or Syndrome
Inflammation of the liver.
Systemic lupus erythematosus
MedGen UID:
6146
Concept ID:
C0024141
Disease or Syndrome
Systemic lupus erythematosus (SLE) is a complex autoimmune disease characterized by production of autoantibodies against nuclear, cytoplasmic, and cell surface molecules that transcend organ-specific boundaries. Tissue deposition of antibodies or immune complexes induces inflammation and subsequent injury of multiple organs and finally results in clinical manifestations of SLE, including glomerulonephritis, dermatitis, thrombosis, vasculitis, seizures, and arthritis. Evidence strongly suggests the involvement of genetic components in SLE susceptibility (summary by Oishi et al., 2008). Genetic Heterogeneity of Systemic Lupus Erythematosus An autosomal recessive form of systemic lupus erythematosus (SLEB16; 614420) is caused by mutation in the DNASE1L3 gene (602244) on chromosome 3p14.3. An X-linked dominant form of SLE (SLEB17; 301080) is caused by heterozygous mutation in the TLR7 gene (300365) on chromosome Xp22. See MAPPING and MOLECULAR GENETICS sections for a discussion of genetic heterogeneity of susceptibility to SLE.
Hashimoto thyroiditis
MedGen UID:
151769
Concept ID:
C0677607
Disease or Syndrome
Hashimoto thyroiditis (HT) is a chronic autoimmune thyroiditis characterized by diffuse lymphocytic infiltration, thyroid follicles of reduced size containing sparse colloid, and fibrosis replacing the thyroid parenchyma (summary by Klintschar et al., 2001).
Abnormality of complement system
MedGen UID:
870756
Concept ID:
C4025213
Pathologic Function
An abnormality of the complement system.

Recent clinical studies

Etiology

Das N, Giri A, Chakraborty S, Bhattacharjee P
Mutat Res Genet Toxicol Environ Mutagen 2016 Oct;809:50-56. Epub 2016 Sep 9 doi: 10.1016/j.mrgentox.2016.09.006. PMID: 27692299

Diagnosis

Kleer JS, Skattum L, Dubler D, Fischer I, Zgraggen A, Mundwiler E, Kim MJ, Trendelenburg M
Front Immunol 2023;14:1257525. Epub 2024 Feb 26 doi: 10.3389/fimmu.2023.1257525. PMID: 38469558Free PMC Article

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