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Controlled Trial Evaluating Avacopan in C3 Glomerulopathy (ACCOLADE)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03301467
Recruitment Status : Completed
First Posted : October 4, 2017
Last Update Posted : November 24, 2021
Medpace, Inc.
Information provided by (Responsible Party):

Brief Summary:
The aim of this trial is to evaluate the effect of avacopan treatment on renal disease activity in patients with complement component 3 glomerulopathy (C3G). Funding Source - FDA OOPD

Condition or disease Intervention/treatment Phase
C3 Glomerulopathy (C3G) Drug: Avacopan Drug: Avacopan Matching Placebo Phase 2

Detailed Description:

C3 glomerulopathy (C3G) is characterized by evidence of alternative complement activation based on C3 deposition in the glomeruli. There are two forms of the disease: dense deposit disease (DDD) and C3 glomerulonephritis (C3GN). There is no approved treatment for patients with C3G.

This is a randomized, double blind, placebo controlled Phase 2 study to evaluate the safety and efficacy of avacopan (CCX168) in patients with C3G. Patients receive avacopan 30mg or matching placebo orally twice-daily. The placebo-controlled treatment period is 26 weeks (182 days). This will be followed by 26 weeks during which time all patients will receive avacopan. Thereafter, all patients will be followed for eight weeks (56 days) without study drug treatment. The primary objective is to evaluate the efficacy of avacopan compared to placebo based on histologic changes in kidney biopsies taken at baseline and after 26 weeks of treatment. The primary endpoint will be based on the percent change from baseline in the C3G Histologic Index for disease activity.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 57 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Intervention Model Description: Placebo crossover to active
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Masking Description: Matching placebo
Primary Purpose: Treatment
Official Title: A Randomized, Double Blind, Placebo Controlled Phase 2 Study to Evaluate the Safety and Efficacy of Avacopan (CCX168) in Patients With C3 Glomerulopathy
Actual Study Start Date : September 29, 2017
Actual Primary Completion Date : March 3, 2021
Actual Study Completion Date : October 27, 2021

Arm Intervention/treatment
Experimental: Avacopan
Avacopan (formerly CCX168) 10 mg capsules x 3 administered twice daily during the blinded 26 week blinded treatment period
Drug: Avacopan
Orally administered
Other Name: CCX168

Placebo Comparator: Avacopan Matching Placebo
Matching placebo capsules x 3 administered twice daily during the 26 week blinded treatment period period
Drug: Avacopan Matching Placebo
avacopan matching placebo
Other Name: placebo

Primary Outcome Measures :
  1. Histologic Index [ Time Frame: 26 weeks ]
    Percent change from baseline in the C3G Histologic Index for disease activity

Secondary Outcome Measures :
  1. Histologic response [ Time Frame: 26 weeks ]
    The proportion of subjects who have a histologic response defined as a decrease (improvement) in the C3G Histologic Index for activity at 26 weeks

  2. Histologic Index [ Time Frame: 26 weeks ]
    The percent change from baseline in the C3G Histologic Index for disease chronicity over the placebo-controlled treatment period

  3. eGFR [ Time Frame: 26 weeks ]
    The change from baseline in eGFR over the placebo-controlled treatment period

  4. eGFR [ Time Frame: 26 weeks ]
    The percent change from baseline in eGFR over the placebo-controlled treatment period

  5. UPCR [ Time Frame: 26 weeks ]
    The percent change from baseline in UPCR over the placebo-controlled treatment period

  6. Urinary MCP-1 [ Time Frame: 26 weeks ]
    The percent change from baseline in urinary MCP-1: creatinine ratio over the placebo-controlled treatment period

  7. EQ-5D-5L [ Time Frame: 26 weeks ]
    Change from baseline in EQ-5D-5L (visual analogue scale and index) over the placebo-controlled treatment period

  8. SF-36 v2 [ Time Frame: 26 weeks ]
    Change from baseline in SF-36 v2(domains and component scores) over the placebo-controlled treatment period

Information from the National Library of Medicine

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Ages Eligible for Study:   12 Years and older   (Child, Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  1. Biopsy-proven C3G, either DDD or C3GN, with or without a renal transplant, and with the following observations upon renal biopsy taken within 12 weeks prior to screening or during screening:

    1. ≥2-levels of magnitude greater staining of C3 than any combination of IgG, IgM, IgA, kappa and lambda light chains, and C1q by immunohistochemistry, and
    2. evidence of proliferative glomerulonephritis (mesangial hypercellularity of greater than 3 mesangial cells per mesangial area and/or endocapillary hypercellularity defined as an increased number of cells within glomerular capillary lumina, causing luminal narrowing) based on light microscopy, and
    3. confirmation of the presence of electron dense deposits in the glomeruli on electron microscopy corresponding with the C3 immunofluorescence positivity;
  2. Male or female subjects, aged at least 18 years; where approved, adolescents (12-17 year old) may be enrolled; female subjects of childbearing potential (i.e., those who have experienced menarche and who is not permanently sterile or postmenopausal, defined as at least 12 consecutive months with no menses without an alternative medical cause) may participate if adequate contraception is used during, and for at least the three months after study completion; Male subjects with partners of childbearing potential may participate in the study if they had a vasectomy at least 6 months prior to randomization or if adequate contraception is used during, and for at least the 3 months after study completion; Adequate contraception is defined as resulting in a failure rate of less than 1% per year (combined estrogen and progestogen [oral, intravaginal, or transdermal], or progestogen-only hormonal contraception (oral, injectable, or implantable), intra-uterine device, intra-uterine hormone releasing system, bilateral tubal occlusion, vasectomized partner, or true sexual abstinence, i.e., in line with the preferred and usual lifestyle of the subject);
  3. Willing and able to give written Informed Consent and to comply with the requirements of the study protocol; written Assent and Informed Consent must be obtained from the legal guardian in accordance with regional laws or regulations for subjects 12 to 17 years of age; and
  4. Judged to be otherwise fit for the study by the Investigator, based on medical history, physical examination, and clinical laboratory assessments. Subjects with clinical laboratory values that are outside of normal limits (other than those specified in the Exclusion Criteria) and/or with other abnormal clinical findings that are judged by the Investigator not to be of clinical significance, may be entered into the study.

Exclusion Criteria:

  1. Pregnant or nursing;
  2. Tubulointerstitial fibrosis appears to be more than 50% based on standard assessment using trichrome staining of the renal biopsy;
  3. Use of eculizumab or another anti-C5 antibody within 26 weeks prior to dosing;
  4. Secondary C3 disease, e.g., infection-associated disease, or associated with another systemic or autoimmune disease; presence of a monoclonal spike on serum or urine protein electrophoresis or immunofixation assay;
  5. Currently on dialysis or likely will require dialysis within 7 days after screening;
  6. History or presence of any form of cancer within the 5 years prior to screening, with the exception of excised basal cell or squamous cell carcinoma of the skin, or carcinoma in situ such as cervical or breast carcinoma in situ that has been excised or resected completely and is without evidence of local recurrence or metastasis;
  7. Positive hepatitis B virus (HBV), hepatitis C virus (HCV), or human immunodeficiency virus (HIV) viral screening test indicative of acute or chronic infection;
  8. Evidence of tuberculosis based on interferon γ release assay (IGRA), tuberculin purified protein derivative (PPD) skin test, or chest radiography done at screening or within 6 weeks prior to screening;
  9. WBC count less than 3500/μL, or neutrophil count less than 1500/μL, or lymphocyte count less than 500/μL before start of dosing;
  10. Evidence of hepatic disease; AST, ALT, alkaline phosphatase, or bilirubin >3 x the upper limit of normal before start of dosing;
  11. Currently using a strong inducer of the CYP3A4 enzyme, such as carbamazepine, phenobarbital, phenytoin, rifampin, or St. John's wort;
  12. Known hypersensitivity to avacopan or inactive ingredients of the avacopan capsules (including gelatin, polyethylene glycol, or Cremophor) or inability to swallow the capsules;
  13. Participated in any clinical study of an investigational product within 30 days prior to screening or within 5 half-lives after taking the last dose; and
  14. History or presence of any medical condition or disease which, in the opinion of the Investigator, may place the subject at unacceptable risk for study participation.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03301467

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United States, California
Clinical Site
Palo Alto, California, United States, 94305
United States, Illinois
Clinical Site
Chicago, Illinois, United States, 60611
United States, Iowa
Clinical Site
Iowa City, Iowa, United States, 52242
United States, Massachusetts
Clinical Site
Boston, Massachusetts, United States, 02114
United States, New York
Clinical Site
New York, New York, United States, 10032
Clinical Site
Rochester, New York, United States, 14625
United States, Ohio
Clinical Site
Columbus, Ohio, United States, 43210
United States, Pennsylvania
Clinical Site
Philadelphia, Pennsylvania, United States, 19107
United States, Rhode Island
Clinical Trial Site
East Providence, Rhode Island, United States, 02914
Clinical Site
Antwerp, Belgium
Clinical Site
Brussels, Belgium
Clinical Site
Leuven, Belgium
Clinical Site
Liège, Belgium
Canada, British Columbia
Clinical Site
Vancouver, British Columbia, Canada
Clinical Site
Calgary, Canada
Clinical Site
Aalborg, Denmark
Clinical Site
Copenhagen, Denmark
Clinical Site
Odense, Denmark
Clinical Site
Boulogne-sur-Mer, France
Clinical Site
Grenoble, France
Clinical Site
Paris, France
Clinical Site
Valenciennes, France
Clinical Site
Dresden, Germany
Clinical Site
Essen, Germany
Clinical Site
Hannover, Germany
Clinical Site
Lübeck, Germany
Clinical Site
Munich, Germany
Clinical Site
Dublin, Ireland
Clinical Site
Bergamo, Italy
Clinical Site
Bologna, Italy
Clinical Site
Milano, Italy
Clinical Site
Parma, Italy
Clinical Site
Roma, Italy
Clinical Site
Amsterdam, Netherlands
Clinical Site
Leiden, Netherlands
Clinical Site
Nijmegen, Netherlands
Clinical Site
Barcelona, Spain
Clinical Site
Burela De Cabo, Spain
Clinical Site
Madrid, Spain
United Kingdom
Clinical Site
London, United Kingdom
Clinical Site
Newcastle Upon Tyne, United Kingdom
Sponsors and Collaborators
Medpace, Inc.
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Responsible Party: ChemoCentryx Identifier: NCT03301467    
Other Study ID Numbers: CL011_168
1R01FD006342-01 ( U.S. FDA Grant/Contract )
First Posted: October 4, 2017    Key Record Dates
Last Update Posted: November 24, 2021
Last Verified: November 2021
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: Yes
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by ChemoCentryx:
C3 Glomerulonephritis
C3 glomerulopathy
dense deposit disease
membranoproliferative glomerulonephritis
idiopathic MPGN