Creutzfeldt-Jakob Disease (CJD) | Prion DiseaseNCT07589283
CLIME-CJD: A Multimodal Study
An observational study of Creutzfeldt-Jakob Disease (CJD) | Prion Disease, run by First Affiliated Hospital of Fujian Medical University at 1 site in China.
Trial summary
Creutzfeldt-Jakob disease (CJD) is a rare and rapidly progressive neurological disorder. This study aims to describe and summarize the key features of CJD by looking back at medical records of patients who were diagnosed with CJD at our hospital. Read more about this study
- Who is it for?
- Any age
- Conditions the study is for
- Creutzfeldt-Jakob Disease (CJD) | Prion Disease
- How many people
- 150 participants
- Where
- 1 siteChina
- Study dates
- 1 Jan 2022to Dec 2031
- How long will I take part?
- 6 Months
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages Any age
- All sexes
- Child, Adult, Older adult
Study population: This study population consists of patients who were diagnosed with Creutzfeldt-Jakob Disease (CJD) at the First Affiliated Hospital of Fujian Medical University between Jan 01, 2022 and Dec 31, 2031. Potential participants were identified through a search of the hospital's electronic medical record system using diagnostic codes for CJD and related prion diseases. All patients who met the inclusion and exclusion criteria and had sufficient medical record data available for abstraction were included in the analysis. No additional recruitment or active enrollment was performed, as this was a retrospective chart review study. The study population is expected to reflect the typical clinical presentation and diagnostic workup of CJD in a real-world hospital setting.
Who may be able to join
- Diagnosis of definite or probable Creutzfeldt-Jakob Disease (CJD) according to the established WHO diagnostic criteria
- Available medical records covering at least one of the following: clinical history, peripheral blood test results, cerebrospinal fluid (CSF) analysis findings, brain MRI reports/images, or EEG reports
- Hospitalized or evaluated at the participating institution during the study period
Who cannot join
- Alternative diagnosis confirmed that explains all clinical features (e.g., autoimmune encephalitis, rapidly progressive dementia due to other causes)
- Incomplete medical records with no relevant clinical, laboratory, imaging, or EEG data available
- Patient or legal representative declined the use of medical records for research purposes (where applicable according to local regulations)
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
About this study
Official title: A Multimodal Retrospective Cohort Analysis of Clinical, Laboratory, Neuroimaging, Electroencephalographic, and Biomarker Characteristics in Patients With Creutzfeldt-Jakob Disease: The CLIME-CJD Study
Creutzfeldt-Jakob disease (CJD) is a rare and rapidly progressive neurological disorder. This study aims to describe and summarize the key features of CJD by looking back at medical records of patients who were diagnosed with CJD at our hospital. The researchers will collect information from routine clinical evaluations, including patients' symptoms, blood tests, cerebrospinal fluid analysis, brain imaging (such as MRI and PET), and electroencephalography (EEG). By analyzing these data together, the study hopes to provide a clearer picture of how CJD presents in routine clinical practice. This may help doctors recognize the disease more quickly in the future. No new tests or treatments will be given to patients. All data are collected from existing medical records.
- Being tested
- No Interventions
- Medical subject headings
- Creutzfeldt-Jakob Syndrome, Prion Diseases
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
No InterventionsOther
No Interventions
What is being measured
The primary outcome is the main question the study is designed to answer.
Proportion of CJD Patients With Characteristic Diagnostic Findings
The primary outcome is the proportion of patients showing characteristic abnormalities across five domains: clinical symptoms, peripheral blood markers, cerebrospinal fluid 14-3-3 protein and RT-QuIC, brain MRI (cortical ribboning or basal ganglia hyperintensity), and EEG (periodic sharp wave complexes).
Measured: Baseline
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted15 May 2026
- Study start1 Jan 2022
- Primary completionDec 2031 (estimated)
- Study completionDec 2031 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Creutzfeldt-Jakob Disease (CJD) | Prion DiseaseStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Enrolment
- 150 participants (estimated)
- Target duration
- 6 Months
Sponsor and investigators
- Lead sponsor
- First Affiliated Hospital of Fujian Medical University
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07589283
- Sponsor's protocol ID
- 2026-272-CLIME-CJD
- Status last verified
- May 2026
- First submitted
- 6 May 2026
- Last updated
- 15 May 2026
- Results posted
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 15 May 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Multimodal Retrospective Cohort Analysis of Clinical, Laboratory, Neuroimaging, Electroencephalographic, and Biomarker Characteristics in Patients With Creutzfeldt-Jakob Disease: The CLIME-CJD Study
- ClinicalTrials.gov ID
- NCT07589283
- Acronym / sponsor ID
- 2026-272-CLIME-CJD
- Study type
- Observational
- Recruitment status
- Enrolling by invitation
- Enrolment
- 150 participants (estimated)
- Lead sponsor
- First Affiliated Hospital of Fujian Medical UniversityUniversity, hospital or other
- Study start
- 1 Jan 2022 (actual)
- Primary completion
- Dec 2031 (estimated)
- Study completion
- Dec 2031 (estimated)
- First posted
- 15 May 2026 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
Creutzfeldt-Jakob disease (CJD) is a rare and rapidly progressive neurological disorder. This study aims to describe and summarize the key features of CJD by looking back at medical records of patients who were diagnosed with CJD at our hospital. The researchers will collect information from routine clinical evaluations, including patients' symptoms, blood tests, cerebrospinal fluid analysis, brain imaging (such as MRI and PET), and electroencephalography (EEG). By analyzing these data together, the study hopes to provide a clearer picture of how CJD presents in routine clinical practice. This may help doctors recognize the disease more quickly in the future. No new tests or treatments will be given to patients. All data are collected from existing medical records.
Study design
- Observational model
- Cohort
- Time perspective
- Cross-sectional
- Target follow-up
- 6 Months
Who may qualify
- Sex
- All
- Age groups
- Child, Adult, Older adult
- Study population
- This study population consists of patients who were diagnosed with Creutzfeldt-Jakob Disease (CJD) at the First Affiliated Hospital of Fujian Medical University between Jan 01, 2022 and Dec 31, 2031. Potential participants were identified through a search of the hospital's electronic medical record system using diagnostic codes for CJD and related prion diseases. All patients who met the inclusion and exclusion criteria and had sufficient medical record data available for abstraction were included in the analysis. No additional recruitment or active enrollment was performed, as this was a retrospective chart review study. The study population is expected to reflect the typical clinical presentation and diagnostic workup of CJD in a real-world hospital setting.
Key inclusion criteria (3 listed)
- Diagnosis of definite or probable Creutzfeldt-Jakob Disease (CJD) according to the established WHO diagnostic criteria
- Available medical records covering at least one of the following: clinical history, peripheral blood test results, cerebrospinal fluid (CSF) analysis findings, brain MRI reports/images, or EEG reports
- Hospitalized or evaluated at the participating institution during the study period
Key exclusion criteria (3 listed)
- Alternative diagnosis confirmed that explains all clinical features (e.g., autoimmune encephalitis, rapidly progressive dementia due to other causes)
- Incomplete medical records with no relevant clinical, laboratory, imaging, or EEG data available
- Patient or legal representative declined the use of medical records for research purposes (where applicable according to local regulations)
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| No InterventionsNo Interventions | Other | – |
Primary outcome
Proportion of CJD Patients With Characteristic Diagnostic Findings
Time frame: Baseline
The primary outcome is the proportion of patients showing characteristic abnormalities across five domains: clinical symptoms, peripheral blood markers, cerebrospinal fluid 14-3-3 protein and RT-QuIC, brain MRI (cortical ribboning or basal ganglia hyperintensity), and EEG (periodic sharp wave complexes).
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 15 May 2026.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
The record lists no contact. Use the official record to reach the sponsor.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Creutzfeldt-Jakob Disease (CJD) | Prion Disease, run by First Affiliated Hospital of Fujian Medical University at 1 site in China.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 3 inclusion and 3 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: enrolling by invitation, as of the sponsor's last update on 15 May 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in China. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Proportion of CJD Patients With Characteristic Diagnostic Findings (time frame: Baseline). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 15 May 2026.