ObjectiveTo identify risk alleles relevant to the causal and biologic mechanisms of antineutrophil cytoplasmic antibody (ANCA)–associated vasculitis (AAV).MethodsA genome‐wide association study and subsequent replication study were conducted in a total cohort of 1,986 cases of AAV (patients with granulomatosis with polyangiitis [Wegener's] [GPA] or microscopic polyangiitis [MPA]) and 4,723 healthy controls. Meta‐analysis of these data sets and functional annotation of identified risk loci were performed, and candidate disease variants with unknown functional effects were investigated for their impact on gene expression and/or protein function.ResultsAmong the genome‐wide significant associations identified, the largest effect on risk of AAV came from the single‐nucleotide polymorphism variants rs141530233 and rs1042169 at the HLA–DPB1 locus (odds ratio [OR] 2.99 and OR 2.82, respectively) which, together with a third variant, rs386699872, constitute a triallelic risk haplotype associated with reduced expression of the HLA–DPB1 gene and HLA–DP protein in B cells and monocytes and with increased frequency of complementary proteinase 3 (PR3)–reactive T cells relative to that in carriers of the protective haplotype. Significant associations were also observed at the SERPINA1 and PTPN22 loci, the peak signals arising from functionally relevant missense variants, and at PRTN3, in which the top‐scoring variant correlated with increased PRTN3 expression in neutrophils. Effects of individual loci on AAV risk differed between patients with GPA and those with MPA or between patients with PR3‐ANCAs and those with myeloperoxidase‐ANCAs, but the collective population attributable fraction for these variants was substantive, at 77%.ConclusionThis study reveals the association of susceptibility to GPA and MPA with functional gene variants that explain much of the genetic etiology of AAV, could influence and possibly be predictors of the clinical presentation, and appear to alter immune cell proteins and responses likely to be key factors in the pathogenesis of AAV.
Objectives: Cervical cancer-related morbimortality and survival is marked by inequalities across different geographical areas. We investigated the association between macroregion of residence and survival in women diagnosed with cervical cancer who underwent cancer treatment in the public health system (SUS) between 2002 and 2015 in Minas Gerais, Brazil. Methods: Non-concurrent prospective study with data from the National Database in Oncology (Base Onco), developed through deterministic-probabilistic pairing of SUS information systems. We identified women aged over 18 years, diagnosed with cervical cancer between 2002 and 2010, who underwent radiotherapy and/or chemotherapy and who were living in Minas Gerais. We estimated five-year overall and cancer-specific survival probabilities by the Kaplan-Meier method. Extended Cox models were employed to assess the association between macroregion of residence and overall and cancer-specific death risk. Results: A total of 5,613 patients were included. Five-year overall and cancer-
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