TY - GEN AU - Jüptner,M AU - Flachsbart,F AU - Caliebe,A AU - Lieb,W AU - Schreiber,S AU - Zeuner,R AU - Franke,A AU - Schröder,J O TI - Low copy numbers of complement C4 and homozygous deficiency of C4A may predispose to severe disease and earlier disease onset in patients with systemic lupus erythematosus SN - 1477-0962 PY - 2018///0917 KW - Adult KW - Aged KW - Case-Control Studies KW - Chi-Square Distribution KW - Complement C4a KW - deficiency KW - DNA Copy Number Variations KW - Drug Therapy, Combination KW - Female KW - Gene Deletion KW - Gene Dosage KW - Gene Frequency KW - Genetic Association Studies KW - Genetic Predisposition to Disease KW - Germany KW - HLA-DRB1 Chains KW - genetics KW - Homozygote KW - Humans KW - Immunosuppressive Agents KW - therapeutic use KW - Logistic Models KW - Lupus Erythematosus, Systemic KW - diagnosis KW - Male KW - Middle Aged KW - Odds Ratio KW - Phenotype KW - Polymorphism, Single Nucleotide KW - Prognosis KW - Risk Factors KW - Severity of Illness Index KW - Time Factors KW - Young Adult N1 - Publication Type: Journal Article UR - https://doi.org/10.1177/0961203317735187 ER -