Colchicine to Reduce Your SympToms And Lower Levels of Inflammation, Zeroing in on Effective CPPD Disease Treatment
CRYSTALLIZE
A Randomized, Double-Blind, Multi-Site Placebo Controlled Trial of Colchicine in Calcium Pyrophosphate Deposition Disease
1 other identifier
interventional
150
1 country
5
Brief Summary
The goal of this clinical trial is to learn if colchicine reduces levels of proteins indicating inflammation in the blood in individuals with calcium pyrophosphate deposition (CPPD) disease. The trial will also test the effect of colchicine on joint symptoms in CPPD disease. The main questions it aims to answer are:
- Does colchicine reduce the level of interleukin 18 (IL-18) in the blood of individuals with CPPD disease?
- Does colchicine reduce pain scores in individuals with CPPD disease? Researchers will compare colchicine once daily to a placebo (a look-alike pill that contains no drug) to see if colchicine works to treat CPPD disease. Participants will:
- Take colchicine or a placebo every day for 6 months
- Visit the clinic 3 times in 6 months for joint examinations, surveys, and blood tests. Each visit will last 2-3 hours.
- Speak on the telephone with researchers for about 4 times over 6 months. Each phone call will last about 5 minutes.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_2
Started Jul 2026
Typical duration for phase_2
5 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
February 26, 2025
CompletedFirst Posted
Study publicly available on registry
March 3, 2025
CompletedStudy Start
First participant enrolled
July 20, 2026
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 30, 2030
ExpectedStudy Completion
Last participant's last visit for all outcomes
September 30, 2030
July 9, 2026
July 1, 2026
3.8 years
February 26, 2025
July 7, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Interleukin 18 (IL-18)
Serum IL-18
Baseline and Week 24
Secondary Outcomes (16)
Serum IL-1b
Baseline and Week 24
Serum IL-17A
Baseline and Week 24
High-sensitivity C-reactive protein (hsCRP)
Baseline and Week 24
IL-1b gene signature expression in PBMCs
Baseline and Week 24
Immune cell population frequencies
Baseline and Week 24
- +11 more secondary outcomes
Study Arms (2)
Colchicine
EXPERIMENTALColchicine
Placebo
PLACEBO COMPARATORPlacebo
Interventions
Colchicine 0.6mg tab, overencapsulated to match placebo capsule, taken by mouth once daily
Eligibility Criteria
You may qualify if:
- Provide written informed consent
- Fulfill ACR/EULAR 2023 CPPD classification criteria
- Acute or chronic joint inflammation currently or in the past 3 months, not attributable to another condition (Joint Inflammation defined as: At least 1 joint this is swollen, red, or warm to the touch; with or without corresponding tenderness)
- Pain visual analog scale (pain VAS) \>=30 at screening
You may not qualify if:
- Age \<40 years
- Chronic diarrhea
- Gout, rheumatoid arthritis, psoriatic arthritis, or cirrhosis
- Ongoing use of colchicine and unwilling to undergo a 30-day wash-out period (note: patients using colchicine at screening can enroll if they agree to a 30-day wash-out before randomization)
- Pregnant or breast-feeding
- Use of methotrexate, hydroxychloroquine, tocilizumab or canakinumab in the past 4 weeks
- Use of anakinra, oral glucocorticoid, or intra-articular steroid in the past 1 week
- Ongoing use of strong CYP3A4 inhibitors per FDA package insert for colchicine
- Ongoing use of P-glycoprotein inhibitors per FDA package insert for colchicine
- Known allergy to colchicine
- Planned joint surgery in the next 6 months
- CPPD clinical presentation isolated to Crowned Dens Syndrome with no additional peripheral joint involvement
- Screening labs with any of the following:
- Hemoglobin \< 9 g/dL
- WBC \<3 x 10\^9/L
- +4 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Brigham and Women's Hospitallead
- Rheumatology Research Foundationcollaborator
Study Sites (5)
University of Alabama - Birmingham
Birmingham, Alabama, 35233, United States
University of California - Los Angeles
Los Angeles, California, 90095, United States
Boston University Medical Center/Boston Medical Center
Boston, Massachusetts, 02118, United States
Brigham and Women's Hospital
Boston, Massachusetts, 02118, United States
Medical College of Wisconsin
Milwaukee, Wisconsin, 53226, United States
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Intervention Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 2
- Allocation
- RANDOMIZED
- Masking
- QUADRUPLE
- Who Masked
- PARTICIPANT, CARE PROVIDER, INVESTIGATOR, OUTCOMES ASSESSOR
- Masking Details
- Data Coordinating Center
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- OTHER
- Responsible Party
- PRINCIPAL INVESTIGATOR
- PI Title
- Assistant Professor of Medicine
Study Record Dates
First Submitted
February 26, 2025
First Posted
March 3, 2025
Study Start
July 20, 2026
Primary Completion (Estimated)
April 30, 2030
Study Completion (Estimated)
September 30, 2030
Last Updated
July 9, 2026
Record last verified: 2026-07