- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04191057
Determining Normal Range for Free Light Chains in Serum Among Twins
August 10, 2023 updated by: University of California, San Francisco
Normal Range Study for Free Light Chains in Blood Among Identical or Fraternal Twins
The objective of this study is to recruit healthy adult identical and fraternal twins for the collection of one teaspoon of blood to be sent to the Clinical Lab at San Francisco General Hospital.
The serum will be tested to determine the reference range for free light chains.
Study Overview
Detailed Description
Serum free light chains are used to assist in the diagnosis of multiple myeloma.
The test measures kappa (K) and lambda (L) chains, and the calculation of the ratio of kappa to lambda (K/L).
Previous studies have shown that the K/L ratio does not change over time (1 year).
The hypothesis of this study is that healthy twins will have a K/L ratio that are close to each other in value, suggesting that this ratio is genetically linked.
Study Type
Interventional
Enrollment (Estimated)
100
Phase
- Not Applicable
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Contact
- Name: Alan Wu, PhD
- Phone Number: 628-206-3540
- Email: alan.wu@ucsf.edu
Study Contact Backup
- Name: Bee Ong
- Phone Number: 628-206-4239
- Email: chuimei.ong@ucsf.edu
Study Locations
-
-
California
-
San Francisco, California, United States, 94306
- Recruiting
- San Francisco General Hospital
-
Contact:
- Bee Ong
- Phone Number: 628-206-4239
- Email: chuimei.ong@ucsf.edu
-
Contact:
- Alan Wu, Ph.D.
- Phone Number: 628-206-3540
- Email: alan.wu@ucsf.edu
-
-
Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years to 80 years (Adult, Older Adult)
Accepts Healthy Volunteers
Yes
Description
Inclusion Criteria:
- Healthy subjects 18-80 years.
- Must be an identical or fraternal twin (both must be recruited)
Exclusion Criteria:
- Symptoms suggestive of multiple myeloma (e.g., renal insufficiency, anemia, bone pain) -
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
- Primary Purpose: Screening
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Experimental: Healthy twin
Free light chains of twins compared to non-twin siblings
|
Blood samples will be collected and analyzed
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Free light chain reference range
Time Frame: One month after the completion of the enrollment
|
Determination of the normal range for free light chains
|
One month after the completion of the enrollment
|
Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Investigators
- Principal Investigator: Alan Wu, PhD, University of California, San Francisco
Publications and helpful links
The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.
General Publications
- Braga F, Infusino I, Dolci A, Panteghini M. Biological variation of free light chains in serum. Clin Chim Acta. 2013 Jan 16;415:10-1. doi: 10.1016/j.cca.2012.09.008. Epub 2012 Sep 11. No abstract available.
- Katzmann JA, Clark RJ, Abraham RS, Bryant S, Lymp JF, Bradwell AR, Kyle RA. Serum reference intervals and diagnostic ranges for free kappa and free lambda immunoglobulin light chains: relative sensitivity for detection of monoclonal light chains. Clin Chem. 2002 Sep;48(9):1437-44.
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (Actual)
August 15, 2018
Primary Completion (Estimated)
January 1, 2025
Study Completion (Estimated)
January 1, 2025
Study Registration Dates
First Submitted
December 5, 2019
First Submitted That Met QC Criteria
December 5, 2019
First Posted (Actual)
December 9, 2019
Study Record Updates
Last Update Posted (Actual)
August 14, 2023
Last Update Submitted That Met QC Criteria
August 10, 2023
Last Verified
August 1, 2023
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
- Cardiovascular Diseases
- Vascular Diseases
- Immune System Diseases
- Neoplasms by Histologic Type
- Neoplasms
- Lymphoproliferative Disorders
- Immunoproliferative Disorders
- Hematologic Diseases
- Hemorrhagic Disorders
- Hemostatic Disorders
- Paraproteinemias
- Blood Protein Disorders
- Neoplasms, Plasma Cell
- Multiple Myeloma
Other Study ID Numbers
- 18-25508
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
NO
IPD Plan Description
Participants and other researchers will not have access to data.
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
No
Studies a U.S. FDA-regulated device product
Yes
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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