A cluster of type I interferon-regulated genes associates with disease activity and prognosis in patients with IgA nephropathy.

The exact pathogenesis of IgA nephropathy (IgAN) is complex and so far, not well defined. Since it has been shown that microbial infections could induce high levels of type I interferon (IFN-I) and there is an evident link between mucosal infection and gross hematuria in IgAN, we hypothesized that IFN-I may play a role in the pathogenic process. In this study, we investigated the type I interferon status in IgAN based on the expression of 17 IFN-regulated genes (IRGs) in whole blood from 59 IgAN patients in a cross-sectional study, of which 34 patients followed longitudinally.

Clinicopathological and immunological features of new onset kidney disease: a rare event after SARS-CoV-2 vaccination.

The onset of various kidney diseases has been reported after severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) vaccination. However, detailed clinical and pathological features are lacking. We screened and analyzed patients with newly diagnosed kidney diseases after inactivated SARS-CoV-2 vaccination in Peking University First Hospital from January 2021 to August 2021, and compared them with the reported cases in the literature.

Shared genetic study gives insights into the shared and distinct pathogenic immunity components of IgA nephropathy and SLE.

An autoimmune component has been suggested to play a role in pathogenesis of IgA nephropathy (IgAN). And genetic studies have reported the shared susceptibility loci between IgAN and the prototype autoimmune disease systemic lupus erythematosus (SLE). This study was designed to systemically identify and annotate the shared susceptibility genes between IgAN and SLE.

A Functional Variant rs3093023 in Is Associated With IgA Nephropathy by Regulating Th17 Cells in a North Han Chinese Population.

C-C chemokine receptor 6 () is a susceptibility gene of various immune-related diseases, which was suggested to be shared with immunoglobulin A nephropathy (IgAN). In this study, we aimed to identify the functional variants. First, we analyzed the associations of common and rare variants detected by multi-platform chips with IgAN susceptibility using imputation and identified 68 significantly associated common variants located in the regulatory region.

Exome Chip Analyses and Genetic Risk for IgA Nephropathy among Han Chinese.

Background And Objectives: IgA nephropathy is the most common form of primary GN worldwide. The evidence of geographic and ethnic differences, as well as familial aggregation of the disease, supports a strong genetic contribution to IgA nephropathy. Evidence for genetic factors in IgA nephropathy comes also from genome-wide association patient-control studies.

The COVID-19 Pandemic from a Human Genetic Perspective.

The coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has impacted a large portion of the world population. From a virus genetic perspective, a recent study described what genomic data revealed about the origin and emergence of SARS-CoV-2, proposing stronger action against illegal wildlife trade. In the current "big data" era, an increasing number of large-scale, multidimensional omics data sets were publicly available.

Mendelian Randomization Analysis Reveals a Causal Effect of Urinary Sodium/Urinary Creatinine Ratio on Kidney Function in Europeans.

Salt restriction was recommended in clinical practice guideline for chronic kidney disease (CKD) treatment, but its effect on kidney outcomes remains conflicting. We aimed to test the causal effect of salt intake, using estimated 24-h sodium excretion from spot urinary sodium/urinary creatinine (UNa/UCr) ratio as a surrogate, on renal function using two-sample Mendelian randomization (MR). Genetic instruments for UNa/UCr were derived from a recent genome-wide association study of 218,450 European-descent individuals in the UK Biobank.

infection is associated with elevated galactose-deficient IgA1 in IgA nephropathy.

Mucosal immunity plays an important role in the pathogenesis of IgA nephropathy (IgAN). This study aimed to investigate if infection of (), a common bacteria in the gastrointestinal tract, associated with IgAN. This study included 261 patients with IgAN and 46 healthy controls.

Homocysteine and IgA nephropathy: observational and Mendelian randomization analyses.

Background: High levels of plasma homocysteine occur almost uniformly in patients with end-stage renal disease (ESRD). IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis and a common cause of ESRD in young adults. Here, we aimed to detect whether homocysteine was elevated and associated with clinical-pathologic manifestations of IgAN patients and tested its causal effects using a two-sample Mendelian randomization (MR) approach.

Update on treatment of immunoglobulin A nephropathy.

Immunoglobulin A nephropathy (IgAN) is the most common form of primary glomerulonephritis worldwide and the most common cause of end-stage renal disease in young adults. However, there are still no specific therapies capable of targeting key pathways involved in disease pathogenesis. Recently, many large randomized controlled trials have been reported, such as Supportive Versus Immunosuppressive Therapy for the Treatment of Progressive IgA Nephropathy, Targeted-release Budesonide Versus Placebo in Patients with IgA Nephropathy and Therapeutic Evaluation of Steroids in IgA Nephropathy Global, which are considered to update the 2012 Kidney Disease: Improving Global Outcomes Guideline.

What Genetics Tells Us About the Pathogenesis of IgA Nephropathy: The Role of Immune Factors and Infection.

Immunoglobulin A nephropathy (IgAN) is the most common type of primary glomerulonephritis, which is characterized by IgA1-containing immune-deposits in the glomerular mesangium. The epidemiologic observations of familial clustering as well as ethnic and regional discrepancies indicate a genetic component to IgAN. Large, international, genome-wide association studies have identified several susceptibility genes and loci for IgAN, many of which have been implicated in immune regulation and are shared with other autoimmune diseases.

Evaluation of 10 SLE susceptibility loci in Asian populations, which were initially identified in European populations.

Ten novel loci have been found to be associated with systemic lupus erythematosus (SLE) susceptibility by a recent genome-wide association study conducted in Europeans. To test their disease associations and genetic similarities/differences in Asians and Europeans, we genotyped the 10 novel single nucleotide polymorphisms (SNPs) and performed an association study. A Chinese cohort from Northern China was recruited as the discovery population, and three East Asian cohorts were included for independent replication.

Autophagy-related gene LRRK2 is likely a susceptibility gene for systemic lupus erythematosus in northern Han Chinese.

Autophagy is associated with various immune diseases, including systemic lupus erythematosus (SLE). Seven variants within autophagy-related genes previously reported to show top association signals by genome-wide association studies in immune diseases were selected for analysis. Initially, 510 SLE patients (631 controls) were enrolled in the study.

Novel identified associations of RGS1 and RASGRP1 variants in IgA Nephropathy.

Known susceptibility loci together can only explain about 6-8% of the disease heritability of IgA nephropathy (IgAN), suggesting that there are still a large number of genetic variants remained to be discovered. We previously identified IgAN and systemic lupus erythematosus (SLE)/lupus nephritis (LN) shared many loci based on GWAS on Chinese populations. The more recent study with high-density genotyping of immune-related loci in individuals with Asian ancestry identified 10 new and 6 suggestive loci in SLE.

Polymorphism rs3828903 within MICB Is Associated with Susceptibility to Systemic Lupus Erythematosus in a Northern Han Chinese Population.

Objectives. The variant rs3828903 within MICB, a nonclassical MHC class I chain-related gene, was detected to contribute to systemic lupus erythematosus (SLE) in a Caucasian population. This study aimed to investigate the association in a northern Han Chinese population.

Detecting Genetic Associations between ATG5 and Lupus Nephritis by trans-eQTL.

Objectives. Numerous loci were identified to perturb gene expression in trans. As elevated ATG5 expression was observed in systemic lupus erythematosus (SLE), the study was conducted to analyze the genome-wide genetic regulatory mechanisms associated with ATG5 expression in a Chinese population with lupus nephritis (LN).

Rare Variants of ATG5 Are Likely to Be Associated With Chinese Patients With Systemic Lupus Erythematosus.

Recently, common variants within or near ATG5, which is a key autophagy gene required for the formation of autophagosomes, have been identified as a candidate gene of systemic lupus erythematosus (SLE) by several genome-wide association studies. Moreover, elevated ATG5 expression was observed in SLE as well as other autoimmune diseases. However, no significant associations between variants within ATG5 and SLE were identified in several Chinese populations.