Study to evaluate the safety and efficacy of CCX168 in subjects with renal vasculitis on background cyclophosphamide treatment

ISRCTN ISRCTN53663626
DOI https://doi.org/10.1186/ISRCTN53663626
ClinicalTrials.gov number NCT01363388
Secondary identifying numbers CL002_168
Submission date
09/07/2011
Registration date
25/08/2011
Last edited
21/01/2019
Recruitment status
No longer recruiting
Overall study status
Completed
Condition category
Circulatory System
Prospectively registered
Protocol
Statistical analysis plan
Results
Individual participant data

Plain English summary of protocol

Background and study aims
ANCA-associated renal vasculitis (AARV) is an autoimmune disease involving multiple organs including the kidneys. It is caused by abnormal antibodies (autoantibodies) that attack a certain type of white blood cells (neutrophils) and can cause those neutrophils to stick to and destroy the inside walls of small blood vessels in tissue and organs such as the kidney. ANCA is an acronym for Anti-Neutrophil Cytoplasmic Antibody.
The aim of this study is to test a newly developed drug (oral investigational product CCX168) for safety and tolerability while you continue to receive the ‘standard of care’ cyclophosphamide treatment, and varying doses of prednisone or prednisone placebo.

Who can participate?
Patients aged 18-75 who are experiencing a recent relapse or new diagnosis of ANCA-associated renal vasculitis.

What does the study involve?
Some patients will receive capsules of CCX168 or placebo, and capsules of prednisone or prednisone-placebo daily for a period of 84 days. This is in addition to their ‘standard of care’ intravenous cyclophosphamide treatment.

What are the possible benefits and risks of participating?
If successful, CCX168 could possibly allow for lower dosing or complete elimination of high dose corticosteroid treatment in this disease. As a result patients with this disease may have less of the toxic side effects usually caused by high dose corticosteroids. CCX168 appeared to be well tolerated in Phase I studies with healthy subjects and adverse events were mild in nature. All new drugs (investigational compounds) have the potential for unanticipated serious or life-adverse events. These side effects could be in addition to the well documented side effects of cyclophosphamide and high dose corticosteroid ‘standard of care’ treatments.

Where is the study run from?
There are about 40 sites participating in this study. They are located in Belgium, Czech Republic, Germany, Hungary, the Netherlands, Poland, Sweden and the UK. The lead study center is at Addenbrooke’s Hospital, Department of Nephrology at Cambridge in the UK.

When is the study starting and how long is it expected to run for?
Patient screening and dosing are scheduled to begin in the fall of 2011 completing in December 2012.

Who is funding the study?
ChemoCentryx (USA)

Who is the main contact?
Antonia Potarca
apotarca@chemocentryx.com

Contact information

Dr David Jayne
Scientific

Addenbrooke's Hospital
Hills Road
Department of Nephrology
Cambridge
CB2 0QQ
United Kingdom

Email Dj106@cam.ac.uk

Study information

Study designMulti-centre randomized double-blind placebo-controlled phase 2 study
Primary study designInterventional
Secondary study designRandomised controlled trial
Study setting(s)Hospital
Study typeTreatment
Participant information sheet Not available in web format, please use the contact details below to request a patient information sheet
Scientific titleA randomized, double-blind, placebo-controlled, phase 2 study to evaluate the safety and efficacy of CCX168 in subjects with renal vasculitis on background cyclophosphamide treatment
Study acronymCLEAR (C5aR inhibitor on Leukocytes Exploratory ANCA-associated Renal vasculitis study)
Study objectivesThat CCX168, a C5a complement receptor, will be safe, well tolerated and effective in patients with antineutrophil cytoplasmic antibodies ANCA-associated renal vasculitis on background cyclophosphamide treatment and may result in reduced toxicity of induction therapy by the reduction of or the elimination of systemic corticosteroid therapy.
Ethics approval(s)NRES Committee East of England-Cambridge Central, 13/10/2011, ref: 11/EE/0210
All other centres will seek ethics approval before recruitment of the first participant
Health condition(s) or problem(s) studiedRenal Vasculitis
Intervention1. Treatment: CCX168 30mg or placebo twice daily for 84 days
2. Comparator: Prednisone at starting doses ranging from 15 to 60 mg (body weight dependent) per day for 84 days or matching prednisone placebo once daily for 84 days
Intervention typeDrug
Pharmaceutical study type(s)
PhasePhase II
Drug / device / biological / vaccine name(s)CCX168, prednisone, cyclophosphamide
Primary outcome measureSafety of CCX168 in patients with anti-neutrophil cytoplasmic antibody associated renal vasculitis measured upon completion of 84 days of treatment.
Secondary outcome measuresSystemic corticosteroid use measured upon completion of 84 days of treatment.
Overall study start date01/08/2011
Completion date31/03/2013

Eligibility

Participant type(s)Patient
Age groupAdult
Lower age limit18 Years
Upper age limit75 Years
SexBoth
Target number of participantsApproximately 60
Key inclusion criteria1. Clinical diagnosis of Wegener’s granulomatosis, microscopic polyangiitis or renal limited vasculitis
2. Male and postmenopausal or surgically sterile female subjects, aged 18-75 years with new or relapsed ANCA-associated renal vasculitis (AARV) where treatment with cyclophosphamide would be required
3. Positive indirect immunofluorescence (IIF) test for peri-nuclear (protoplasmic-staining) antineutrophil cytoplasmic antibodies (P-ANCA) or C-ANCA, or positive Enzyme-linked immunosorbent assay (ELISA) test for anti-proteinase-3 (PR3) or anti-myeloperoxidase (MPO) at screening
4. Proven to have renal vasculitis based on renal biopsy or have hematuria and proteinuria compatible with nephritis
5. Estimated glomerular filtration rate of greater than 30 mL per minute
Key exclusion criteria1. Severe disease as determined by rapidly progressive glomerulonephritis, alveolar hemorrhage, hemoptysis, rapid-onset mononeuritis multiplex or central nervous system involvement
2. Any other multi-system autoimmune disease
3. Medical history of coagulopathy or bleeding disorder
4. Received cyclophosphamide within 12 weeks of screening; if on azathioprine, mycophenolate mofetil, or methotrexate at the time of screening, these drugs must be withdrawn prior to receiving the cyclophosphamide dose on Day 1
5. Received high-dose intravenous corticosteroids within 4 weeks of screening
6. On an oral dose of a corticosteroid of more than 10 mg prednisone-equivalent at the time of screening
7. Received rituximab or other B-cell antibody within 52 weeks of screening or 26 weeks provided B cell reconstitution has occurred; received anti-TNF treatment, abatacept, alemtuzumab, intravenous immunoglobulin (IVIg), or plasma exchange within 12 weeks of screening
Date of first enrolment01/08/2011
Date of final enrolment31/03/2013

Locations

Countries of recruitment

  • Belgium
  • Czech Republic
  • England
  • Germany
  • Hungary
  • Netherlands
  • Poland
  • Sweden
  • United Kingdom

Study participating centre

Addenbrooke's Hospital
Cambridge
CB2 0QQ
United Kingdom

Sponsor information

ChemoCentryx, Inc. (USA)
Industry

850 Maude Avenue
Mountain View
California
94043
United States of America

ROR logo "ROR" https://ror.org/04gp12571

Funders

Funder type

Industry

ChemoCentryx, Inc. (USA)

No information available

Results and Publications

Intention to publish date
Individual participant data (IPD) Intention to shareNo
IPD sharing plan summaryNot expected to be made available
Publication and dissemination planTo be confirmed at a later date
IPD sharing plan

Study outputs

Output type Details Date created Date added Peer reviewed? Patient-facing?
Results article results 01/09/2017 21/01/2019 Yes No
HRA research summary 28/06/2023 No No

Editorial Notes

21/01/2019: Publication reference added
01/03/2016: No publications found, verifying study status with principal investigator