Details

Autor(en) / Beteiligte

• Kerick, Martin
• Acosta-Herrera, Marialbert
• Simeón-Aznar, Carmen Pilar
• Callejas, José Luis
• Assassi, Shervin
• Proudman, Susanna M
• Nikpour, Mandana
• Hunzelmann, Nicolas
• Moroncini, Gianluca
• de Vries-Bouwstra, Jeska K
• Orozco, Gisela
• Barton, Anne
• Herrick, Ariane L
• Terao, Chikashi
• Allanore, Yannick
• Fonseca, Carmen
• Alarcón-Riquelme, Marta Eugenia
• Radstake, Timothy R D J
• Beretta, Lorenzo
• Denton, Christopher P
• Mayes, Maureen D
• Martin, Javier

Titel

Complement component C4 structural variation and quantitative traits contribute to sex-biased vulnerability in systemic sclerosis

Ist Teil von

• Npj genomic medicine, 2022-10, Vol.7 (1), p.57-57, Article 57

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2022

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• Copy number (CN) polymorphisms of complement C4 play distinct roles in many conditions, including immune-mediated diseases. We investigated the association of C4 CN with systemic sclerosis (SSc) risk. Imputed total C4, C4A, C4B, and HERV-K CN were analyzed in 26,633 individuals and validated in an independent cohort. Our results showed that higher C4 CN confers protection to SSc, and deviations from CN parity of C4A and C4B augmented risk. The protection contributed per copy of C4A and C4B differed by sex. Stronger protection was afforded by C4A in men and by C4B in women. C4 CN correlated well with its gene expression and serum protein levels, and less C4 was detected for both in SSc patients. Conditioned analysis suggests that C4 genetics strongly contributes to the SSc association within the major histocompatibility complex locus and highlights classical alleles and amino acid variants of HLA-DRB1 and HLA-DPB1 as C4-independent signals.