Frequently
Asked Questions
(FAQs)

Close FAQs Open All FAQs

This research study is evaluating an investigational medication for IgA nephropathy (IgAN) in adults. You may be able to take part in this study if you:

  • Are at least 18 years of age
  • Have been diagnosed with IgAN
  • Have been on stable therapy for IgAN for at least 12 weeks
  • Have not had a kidney transplant
  • Do not have certain autoimmune diseases such as ulcerative colitis or Crohn's disease

Study participation will last up to 110 weeks and includes up to 26 visits. This includes a 22-week treatment period followed by an 82-week follow-up period. Those who qualify will be randomly assigned (like flipping a coin) to receive either the investigational medication (called mezagitamab) or a placebo (a substance that looks like the investigational medication but contains no active ingredients), along with standard-of-care therapy. Two out of every 3 participants will receive the investigational medication, and 1 out of 3 will receive the placebo.

During the 22-week treatment period, participants will receive subcutaneous (under the skin) injections for a total of 16 doses. Participants will then enter an 82-week follow-up period.

Participation can last up to 110 weeks and includes up to 26 visits.

The investigational medication is a compound that aims to slow down the progression of IgAN by reducing how much of the defective IgA protein is produced in the body. It will be given as a subcutaneous (under the skin) injection.

Do not discontinue any medication unless you are advised to do so by the study staff or your primary care provider.

Travel-related support for this study may be available depending on country and site regulatory approvals. The investigational medication, placebo, and all study-related tests will be provided to participants during their study participation.

Participating in clinical research may offer the opportunity to take a more active role in your healthcare, potentially access an investigational medication, and help advance research that may benefit others in the future.

Clinical research studies are designed in specific ways, and one or more of the answers that you provided were outside of the guidelines for this study. This does not mean you will not qualify for different research studies.

Who can participate in this research study?

This research study is evaluating an investigational medication for IgA nephropathy (IgAN) in adults. You may be able to take part in this study if you:

  • Are at least 18 years of age
  • Have been diagnosed with IgAN
  • Have been on stable therapy for IgAN for at least 12 weeks
  • Have not had a kidney transplant
  • Do not have certain autoimmune diseases such as ulcerative colitis or Crohn's disease

What’s involved with study participation?

Study participation will last up to 110 weeks and includes up to 26 visits. This includes a 22-week treatment period followed by an 82-week follow-up period. Those who qualify will be randomly assigned (like flipping a coin) to receive either the investigational medication (called mezagitamab) or a placebo (a substance that looks like the investigational medication but contains no active ingredients), along with standard-of-care therapy. Two out of every 3 participants will receive the investigational medication, and 1 out of 3 will receive the placebo.

During the 22-week treatment period, participants will receive subcutaneous (under the skin) injections for a total of 16 doses. Participants will then enter an 82-week follow-up period.

How long is this research study?

Participation can last up to 110 weeks and includes up to 26 visits.

What is the medication being tested?

The investigational medication is a compound that aims to slow down the progression of IgAN by reducing how much of the defective IgA protein is produced in the body. It will be given as a subcutaneous (under the skin) injection.

What about my current medications?

Do not discontinue any medication unless you are advised to do so by the study staff or your primary care provider.

Does participating in this study cost me anything?

Travel-related support for this study may be available depending on country and site regulatory approvals. The investigational medication, placebo, and all study-related tests will be provided to participants during their study participation.

Why should I participate in clinical research?

Participating in clinical research may offer the opportunity to take a more active role in your healthcare, potentially access an investigational medication, and help advance research that may benefit others in the future.

Why did I disqualify?

Clinical research studies are designed in specific ways, and one or more of the answers that you provided were outside of the guidelines for this study. This does not mean you will not qualify for different research studies.

©2026 Clinical Trial Media. All Rights Reserved. The images depicted contain models and are being used for illustrative purposes only.