Clinical trial NCT02197767: Pilot Study of Rituximab to Treat Fibrillary Glomerulonephritis
Official title: A Single Center Pilot Trial of Rituximab in the Treatment of Fibrillary Glomerulonephritis
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE2
Conditions: Fibrillary Glomerulonephritis
Keywords: fibrillary glomerulonephritis
rituximab
Rituxan
MabThera
Zytux™
Lead sponsor: Mayo Clinic
Sponsor class: OTHER
Collaborators: name: Genentech, Inc.
First posted: 2014-07-23
Enrollment: 11
Sex: ALL
Minimum age (years): 18
Maximum age (years): 79
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: This pilot study is being done to see if the study medication, Rituximab, preserves kidney function after 12 months of taking the drug.

Detailed description: This is a Phase II, open-label pilot study to determine if the use of Rituximab reduces proteinuria over a 12 month period and is there preservation of kidney function with the use of this study drug. Each patient will be treated with 2 intravenous infusions of rituximab 1000 mg, two weeks apart for a total of 2 doses. Each patient will be retreated with identical 2 intravenous infusions of rituximab, two weeks apart at 6 months after the first infusion, irrespective of cluster of differentiation (CD) 20+ cell counts. Thus, each participant will receive 4 infusions of rituximab.

Eligibility criteria: Inclusion Criteria:

* Fibrillary Glomerulonephritis with diagnostic biopsy performed within the last 2 years
* Proteinuria \>1 gram
* Age \> 18 years but \< 80 years
* Adequately controlled blood pressure (BP\<140/90 mmHg in \>75% of the readings) for at least 3 months prior to enrollment with the use of (angiotensin converting enzyme inhibitors (ACEi) and/or angiotensin-receptor blockers (ARB), if tolerated.
* Women must be post- menopausal, surgically sterile or practicing a medically approved method of contraception
* Able and willing to give written informed consent and comply with the requirements of the study protocol
* Adequate renal function as indicated by estimated glomerular filtration rate (GFR) \> 25 mL/min using the Chronic Kidney Disease Epidemiology Collaboration (CKD/EPI) formula or a quantified creatinine clearance \>25 mL/min, and/or serum creatinine \<3.0 mg/dL in the presence of ACEi/ARB therapy
* Adequate bone marrow function, as indicated by hemoglobin \>7.0 gm/dL, white count \>3.0 x 10(9), platelet count \>100 x 10(9)
* Negative chest x-ray within one year
* Negative serum pregnancy test (for women of child bearing age)
* Normal organ function.
* Subject agrees to use an acceptable method of birth control during treatment and for twelve months after completion of treatment
* Subject has provided written informed consent
* Subject agrees to discontinue routine use of non-steroidal anti-inflammatory drugs
* Absolute Neutrophil Count (ANC): \> 1000/ mm3
* Adequate liver function, as indicated by aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase and total bilirubin \< 2x upper limit or normal unless related to primary disease
* Negative HBsAg and anti-hepatitis B (HBc) lab values within 1 year of signing consent

Exclusion Criteria:

* Pregnancy (determined by a serum pregnancy test for all women of childbearing potential within 7 days of treatment), or lactating.
* Inability to comply with study and/or follow-up procedures
* History of HIV (a documented positive lab value within one year of enrollment)
* Presence of active infection
* New York Heart Association Classification III or IV heart disease
* Concomitant malignancies or previous malignancies within the last five years, with the exception of adequately treated basal or squamous cell carcinoma of the skin or carcinoma in situ of the cervix
* History of psychiatric disorder
* At the Investigator's discretion, receipt of a live vaccine within 4 weeks prior to randomization
* At the Investigator's discretion, positive Hepatitis C serology
* Known history of diabetes mellitus or a Hemoglobin A1c result \> 6.0% within 90 days prior to enrollment

Primary outcomes:
measure: Change in 24 Hour Creatinine Clearance
timeFrame: Day 0, Day 365
Secondary outcomes:
measure: Change in Proteinuria
timeFrame: Day 0, Day 365
Other outcomes:
Locations:
city: Rochester
country: United States
facility: Mayo Clinic in Rochester
state: Minnesota
Study officials:
affiliation: Mayo Clinic
name: Stephen B. Erickson, M.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: Erickson SB, Zand L, Nasr SH, Alexander MP, Leung N, Drosou ME, Fervenza FC. Treatment of fibrillary glomerulonephritis with rituximab: a 12-month pilot study. Nephrol Dial Transplant. 2021 Jan 1;36(1):104-110. doi: 10.1093/ndt/gfaa065.