C1S

Highest pathogenic variant AF is 0.000031503525

Gene type

protein_coding

Transcript type

protein_coding

Transcript

ENST00000406697

Coding exons

11

Length

81986

Individuals with no LoFs

125722

Homozygous LoFs

0

Heterozygous LoFs

26

Defined

125748

p

0.000103

Function

FUNCTION: C1s B chain is a serine protease that combines with C1q and C1r to form C1, the first component of the classical pathway of the complement system. C1r activates C1s so that it can, in turn, activate C2 and C4.;

Disease

DISEASE: Complement component C1s deficiency (C1SD) [MIM:613783]: A rare defect resulting in C1 deficiency and impaired activation of the complement classical pathway. C1 deficiency generally leads to severe immune complex disease with features of systemic lupus erythematosus and glomerulonephritis. {ECO:0000269|PubMed:11390518}. Note=The disease is caused by mutations affecting the gene represented in this entry.; DISEASE: Ehlers-Danlos syndrome, periodontal type, 2 (EDSPD2) [MIM:617174]: A form of Ehlers-Danlos syndrome, a connective tissue disorder characterized by hyperextensible skin, atrophic cutaneous scars due to tissue fragility and joint hyperlaxity. EDSPD2 is characterized by the association of typical features of Ehlers-Danlos syndrome with gingival recession and severe early- onset periodontal disease, leading to premature loss of permanent teeth. EDSPD2 transmission pattern is consistent with autosomal dominant inheritance. {ECO:0000269|PubMed:27745832}. Note=The disease is caused by mutations affecting the gene represented in this entry.;