Pilot Study to Evaluate the Safety and Efficacy of Abatacept in Adults and Children 6 Years and Older With Excessive Loss of Protein in the Urine Due to Either Focal Segmental Glomerulosclerosis (FSGS) or Minimal Change Disease (MCD)


About this study

The purpose of this study is evaluate if abatacept is effective and safe in decreasing the level of protein loss in the urine in patients with excessive loss of protein in the urine (nephrotic syndrome) due to either focal segmental glomerulosclerosis (FSGS) or minimal change disease (MCD). Candidates must have a prior kidney biopsy with either diagnosis. Another kidney biopsy will not be required as part of the study. Candidates must have failed or be intolerant of prior therapy for their kidney disease. The failed or intolerant therapy must include corticosteroids and at least one other drug. Candidates can be adults and children over the age of 6. Abatacept will be administered by venous infusion every 4 weeks.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

  • Male and female subjects ages ≥ 6 years
  • Subjects resistant to corticosteroids, calcineurin inhibitors (cyclosporine and tacrolimus), sirolimus, mycophenolate mofetil (MMF), mycophenolic acid (MPA), or cyclophosphamide or intolerant to at least 2 of these
  • UPCR ≥ 3 at screening
  • FSGS or MCD confirmed by renal biopsy
  • eGFR ≥ 45 for children and adults
  • Concomitant use of angiotensin-converting-enzyme inhibitor (ACEi) or angiotensin receptor blocker (ARB) at stable doses for at least 2 weeks or have intolerance documented in the source documents maintained at the site

Exclusion Criteria:

  • Kidney diseases other than FSGS or MCD
  • Collapsing FSGS
  • Systemic lupus erythematosus
  • Diabetes mellitus, both type 1 and type 2
  • Clinically significant congestive heart failure
  • Post renal transplantation, including relapsing post-transplant FSGS
  • Body mass index (BMI): > 40 in subjects ≥ 18 years of age and ≥ 99% percentile for subjects < 18 years of age

Other protocol defined inclusion/exclusion criteria may apply

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status

Rochester, Minn.

Mayo Clinic principal investigator

Fernando Fervenza, M.D., Ph.D.

Closed for enrollment

More information


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Study Results Summary

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Supplemental Study Information

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Additional contact information

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