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    ComplicationsRelated ArticlesKidney FailureNavigating IgA NephropathyContent created by Healthline and supported by advertising V体育安卓版. Learn more

    Risk Factors and Causes of IgA Nephropathy (V体育ios版)

    Medically reviewed by Megan Soliman, MD — Written by Stephanie Watson — Updated on July 2, 2025"V体育平台登录" Risk factorsCausesTakeaway

    Key takeaways

    IgA nephropathy is a disease that causes the protein immunoglobulin A (IgA) to build up in your kidneys. Factors like sex, race, and family history may increase your chance of developing the condition, but the exact cause isn’t clear. The condition happens when antibodies attach to IgA, thinking it’s an invading cell. Clumps of IgA and antibodies then get stuck in your kidneys and cause damage. IgA nephropathy may lead to end-stage kidney disease, which can be life threatening without treatment. IgA nephropathy is also called Berger’s disease. IgA normally helps your body fight infections, but when it gets stuck inside your kidneys, it leads to loss of function.

    IgA builds up and damages the tiny kidney filters, called glomeruli, that remove waste and extra fluids from the blood V体育ios版. This damage makes the kidneys leak blood and protein into the urine.

    The kidneys eventually get so scarred that they can’t filter the blood well enough to keep you healthy VSports最新版本. The final stage of kidney disease is called end-stage kidney disease, also called end-stage renal disease (ESRD). At that point, you will need dialysis or a kidney transplant to filter your blood instead of your damaged kidneys.

    Risk factors (V体育ios版)

    Share on PinterestDesign by Maya ChastainCertain factors make some people more likely than others to get IgA nephropathy V体育平台登录. But just because you have some or all of these risks doesn’t mean you will get this disease.

    IgA nephropathy is about two times more common in men than women in the United States VSports注册入口. Men in their teens to late 30s are most likely to get this condition.

    Asians, Native Americans, and white Americans are at higher risk for IgA nephropathy, although this condition can affect people of any race.

    Your risk increases if you have a family history of IgA nephropathy. Up to 40% of people with a parent, sibling, or child who has IgA nephropathy also have abnormal IgA VSports在线直播.

    Risk for end-stage renal disease

    . Share on Pinterest
    Medical Illustration by Maya Chastain

    According to some research, approximately 1 in 4 people with IgA nephropathy will develop ESRD within 10–20 years of their diagnosis.

    Your risk of developing ESRD from IgA nephropathy is higher if:

    • your kidney function continues to decline
    • your blood test results are abnormal
    • you have high blood pressure

    "V体育2025版" Causes of IgA nephropathy

    Researchers don’t know exactly what causes IgA nephropathy. They believe it results from a faulty immune system response that attacks and damages the kidneys VSports app下载. Here’s what happens:.

    Share on Pinterest
    Medical Illustration by Maya Chastain
    1. IgA, a protein that helps the immune system fight infections, contains less of the sugar galactose than normal.
    2. Antibodies in the blood see the IgA as foreign and attach to it, forming clumps.
    3. Those clumps are too big to fit through the kidney filters, so they get stuck inside.
    4. The trapped IgA inflames and damages the kidneys, causing them to leak blood and protein.
    5. Over time, the kidneys become too damaged to filter the blood.

    The takeaway

    IgA nephropathy is a type of kidney disease V体育官网. It’s most common in younger Asian, Native American, and white men. Having a family history of the disorder also increases your risk.

    The condition happens when antibodies attach to IgA, thinking it’s an invading cell. Clumps of IgA and antibodies then get stuck in your kidneys and cause damage VSports手机版.

    IgA nephropathy may lead to end-stage kidney disease, which can be life threatening without treatment.

     

    How we reviewed this article:

    Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our editorial policy.
    • IgA nephropathy. (2022).
      https://www.niddk.nih.gov/health-information/kidney-disease/iga-nephropathy
    • IgA nephropathy. (2023).
      "VSports最新版本" https://www.kidneyfund.org/all-about-kidneys/other-kidney-diseases/iga-nephropathy
    • IgA nephropathy. (n.d.)
      "V体育官网" https://www.kidney.org/atoz/content/iganeph
    • Jarrick S, et al. (2019). Mortality in IgA nephropathy: A nationwide population-based cohort study.
      https://journals.lww.com/JASN/Fulltext/2019/05000/Mortality_in_IgA_Nephropathy__A_Nationwide.17.aspx
    • Rajasekaran A, et al. (2021). IgA nephropathy: An interesting autoimmune kidney disease.
      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8577278/
    • Rawla P, et al. (2023). IgA nephropathy.
      https://www.ncbi.nlm.nih.gov/books/NBK538214/
    • Sato Y, et al. (2021.) Positive renal familial history in IgA nephropathy is associated with worse renal outcomes: a single-center longitudinal study.
      https://bmcnephrol.biomedcentral.com/articles/10.1186/s12882-021-02425-8
    • Shu D, et al. (2017). Risk factors of progressive IgA nephropathy which progress to end stage renal disease within ten years: a case-control study.
      https://bmcnephrol.biomedcentral.com/articles/10.1186/s12882-016-0429-x

    Share this article

    Medically reviewed by Megan Soliman, MD — Written by Stephanie Watson — Updated on July 2, 2025

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