NCT04561518 · Alnylam Pharmaceuticals
ConTTRibute: A Global Observational Study of Patients With Transthyretin (TTR)-Mediated Amyloidosis (ATTR Amyloidosis)
(ConTTRibute)
What this study is about
The purpose of this study is to: * Describe epidemiological and clinical characteristics, natural history and real-world clinical management of ATTR amyloidosis patients * Characterize the safety and effectiveness of patisiran and vutrisiran as part of routine clinical practice in the real-world clinical setting * Describe disease emergence/progression in pre-symptomatic carriers of a known disease-causing transthyretin (TTR) variant
View original scientific description
The purpose of this study is to: * Describe epidemiological and clinical characteristics, natural history and real-world clinical management of ATTR amyloidosis patients * Characterize the safety and effectiveness of patisiran and vutrisiran as part of routine clinical practice in the real-world clinical setting * Describe disease emergence/progression in pre-symptomatic carriers of a known disease-causing transthyretin (TTR) variant
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Diagnosis of ATTR amyloidosis or documented known disease-causing TTR variant for the cohort of pre-symptomatic carriers
- Germany Only: Patients must be treated per the summary of product characteristics (SmPC) for any approved treatment for ATTR amyloidosis
Exclusion criteria
- Current enrollment in a clinical trial for any investigational agent
Where
- La Jolla, California
- Los Angeles, California
- Jacksonville, Florida
- Iowa City, Iowa
- Kansas City, Kansas
- Baltimore, Maryland
- Boston, Massachusetts
- New York, New York
- Durham, North Carolina
- Columbus, Ohio
- Philadelphia, Pennsylvania
- Austin, Texas
And 1 more location — see the full list below.
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced May 29, 2026 · Source of record for eligibility and locations