Immunoglobulin A Nephropathy (commonly known as IgA Nephropathy) is a chronic kidney condition that affects the filtering units of the kidneys, known as glomeruli. In this immune-mediated disorder, a type of antibody called immunoglobulin A (IgA) builds up in the kidney tissue, leading to inflammation and gradual damage. Over time, this can reduce kidney function and may, in some cases, progress to chronic kidney disease or even kidney failure. The course of the illness varies considerably — some people live for decades without serious symptoms, while others may experience a progressive decline in kidney function.
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IgA Nephropathy Singapore Statistics
Accurate, condition-specific prevalence data for IgA Nephropathy in Singapore is limited in publicly available sources. However, research shows that IgA Nephropathy remains one of the most common forms of primary glomerulonephritis — a category of kidney disease — in Singapore, reflecting its significant role in the nation’s kidney disease landscape. Longitudinal studies comparing histologically confirmed IgA Nephropathy cases over decades indicate that while its frequency has evolved with socio-economic changes, it continues to be a notable contributor to kidney pathology in clinical practice.
In a broader context, kidney disease trends in Singapore are rising: chronic kidney disease prevalence has recently climbed to 13.8 % in adults aged 18-74 (2021-2022), highlighting a growing burden of renal conditions on the healthcare system.
Studies show that even low levels of excessive protein in the urine (proteinuria) carry a 20%-30% risk of kidney failure within 10 years.
What Are The Causes & Risk Factors Of IgA Nephropathy?
The exact cause of IgA Nephropathy remains unknown, but it is understood to involve a combination of genetic and environmental factors that affect the immune system. In IgA Nephropathy, abnormal forms of the IgA antibody (often deficient in a sugar component) accumulate and deposit in the kidney’s glomeruli. These deposits trigger inflammation and scarring, impairing kidney filtering function.
Risk Factors Include:
- Genetic predisposition: IgA Nephropathy can run in families, suggesting hereditary influences.
- Ethnicity: People of East Asian or Caucasian descent have higher rates of the condition compared with other groups.
- Age: It typically presents in younger adults, often between the teens and late 30s.
- Sex: Men are more frequently affected than women.
- Immune challenges: Respiratory infections, liver diseases, and other immune-related conditions may trigger abnormal IgA production, potentially setting off or exacerbating the disease.
What Are The Symptoms Of IgA Nephropathy?
IgA Nephropathy can be symptomless for many years, which is why it is often detected incidentally during routine tests. When symptoms do emerge, they typically reflect underlying kidney injury and include:
- Blood in the urine (haematuria)— urine may appear pink, red or dark-coloured.
- Foamy urine — a sign of excess protein (proteinuria).
- Swelling (oedema) — especially in the legs, ankles or around the eyes.
- High blood pressure (hypertension) — due to impaired kidney function.
- Fatigue and general malaise — when kidney filtration deteriorates significantly.
Because early IgA Nephropathy may cause no obvious symptoms, regular health screenings are important, especially for those with risk factors.
Screening & Prevention
There is no known way to prevent IgA Nephropathy outright, but early detection and ongoing monitoring can slow disease progression and reduce complications. Recommended approaches include:
- Regular health checks: Urinalysis can detect microscopic blood or protein in the urine before symptoms develop.
- Blood pressure monitoring: High blood pressure accelerates kidney damage, so control is vital.
- Lifestyle optimisation: Reducing sodium intake, maintaining a healthy weight and avoiding smoking can support kidney health.
- Prompt evaluation after infections: Since episodes of gross haematuria often occur after respiratory infections, medical follow-up is advisable if symptoms appear.
If you have a family history of kidney disease or are showing signs of kidney impairment, talk with a healthcare professional about appropriate screening.
IgA Nephropathy Treatments
While there is currently no cure for IgA Nephropathy, treatment focuses on slowing disease progression, managing symptoms and protecting kidney function. Standard therapeutic strategies include medications to control blood pressure (such as ACE inhibitors or ARBs), cholesterol-lowering drugs, and lifestyle interventions.
In recent years, newer, disease-targeted treatments have emerged. Nefegan (a targeted-release formulation of budesonide) is an innovative oral therapy shown to reduce levels of the pathogenic IgA that drive the disease process and to slow kidney function decline, and is now incorporated into updated clinical practice guidelines.
Cost Of IgA Nephropathy Treatment
The costs associated with IgA Nephropathy treatment in Singapore vary depending on the stage of disease, the treatments needed, and the healthcare setting. Early management with medications and routine monitoring is generally affordable, especially under public subsidies. However, advanced disease requiring dialysis or transplant becomes significantly more expensive.
Singapore’s national kidney care infrastructure — including subsidised dialysis and chronic disease programmes — aims to reduce out-of-pocket costs for patients with end-stage renal disease. Nonetheless, indirect costs such as laboratory tests, specialist consultations and time off work can add to the overall financial impact. Patients are encouraged to discuss cost and subsidy options with their care team.
Our Preferred (Kidney) Doctors For Kidney Disease Treatments
If you are looking for kidney doctors in Singapore for kidney disease treatment, you can consider our Preferred Doctors:
- Dr Wong Weng Kin is a highly qualified renal physician who combines deep expertise in complex kidney conditions with advanced skills in diagnostic and interventional nephrology, dialysis, and critical care. He offers holistic, personalised treatment that uses the latest research, technology, and precision medicine to protect long-term kidney health and overall well-being.
[SG] Featured Doctor- Dr Kevin Koo
Watch Interview Video: Dr Wong Weng Kin explains chronic kidney disease
Contact Us For An Appointment
If you suspect you may have IgA Nephropathy or have been experiencing symptoms such as blood in your urine, proteinuria or high blood pressure, it is important to seek specialist care promptly. Click the button below to contact us for assistance in securing an appointment with a renal specialist. Our team will support you in navigating referrals, screening and treatment planning.
Contact UsFrequently Asked Questions (FAQs)
It is a kidney condition where immune proteins called IgA build up in the kidneys, causing inflammation and damage.
There is no cure yet, but treatments can slow progression and preserve kidney function.
Genetic factors can increase risk, and the condition may run in families, but not everyone with the gene develops the disease.
Diagnosis often involves urine and blood tests, and a kidney biopsy to confirm IgA deposition.
Contact a healthcare professional for evaluation as soon as possible; visible blood in the urine requires prompt assessment.
This medical content has been reviewed by Dr Wong Weng Kin, a highly qualified renal physician who combines deep expertise in complex kidney conditions with advanced skills in diagnostic and interventional nephrology, dialysis, and critical care.
Learn More: The Gut-Kidney Connection: A New Frontier In Treating IgA Nephropathy
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