Lipid Disorders and Lipid MeasurementVLDLNCT01698489
The Very Large Database of Lipids
An observational study of Lipid Disorders and Lipid Measurement, run by Johns Hopkins University at 1 site in United States.
Trial summary
Closer examination of granular lipid data in a large population offers numerous opportunities to generate new knowledge, ranging from studies examining concordance between commonly used lipid parameters to phenotypic characterization of rare or extreme disorders of lipid metabolism, opening possibilities to better… Read more about this study
- Who is it for?
- Any ageHealthy volunteers can take part
- Conditions the study is for
- Lipid Disorders and Lipid Measurement
- How many people
- 5,051,467 participants
- Where
- 1 siteUnited States
- Study dates
- Apr 2006to Apr 2030
- Phase
- Observational
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
- Healthy volunteers accepted
- Child, Adult, Older adult
Study population: Patients clinically referred for VAP density gradient ultracentrifugation.
Patients with age and lipid data are included in the master database. Eligibility criteria are specific to each individual study.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: The Very Large Database of Lipids (VLDL): A Clinical Laboratory Big Data Project
Closer examination of granular lipid data in a large population offers numerous opportunities to generate new knowledge, ranging from studies examining concordance between commonly used lipid parameters to phenotypic characterization of rare or extreme disorders of lipid metabolism, opening possibilities to better personalize future treatment of abnormal blood lipids.
STUDY POPULATION:
Read more
The Very Large Database of Lipids (VLDL) includes adults and children who were clinically referred for a Vertical Auto Profile (VAP). Patient samples originated predominantly from outpatient primary care clinics in the U.S. (85%), along with specialty clinics and inpatient settings.
LIPID MEASUREMENTS:
The VAP test (VAP Diagnostics Lab, Birmingham, Alabama, USA) directly measures cholesterol concentrations of low density lipoprotein, very low density lipoprotein, intermediate density lipoprotein, high density lipoprotein, their subfractions, and lipoprotein(a). Triglycerides in the database are directly measured using the Abbott ARCHITECT C-8000 system (Abbott Park, Illinois, USA). Lipid distributions in the database closely match those from the population-representative National Health and Nutrition Examination Survey (NHANES).
STUDY PROCEDURES:
This database was investigator-initiated. Only de-identified data reach the investigational site. The master database is housed at The Johns Hopkins Hospital in Baltimore, Maryland, and maintained by Drs. Jones and Martin. The current database (2nd harvest) includes 5,051,467 patients whose laboratory samples were collected from October 1, 2015 and June 30, 2019. Only electronic data, and not blood samples, are sent to Hopkins. The academic investigators have unrestricted access to study data, take responsibility for the accuracy of analyses, and have authority over manuscript preparation and submission.
VARIABLES:
The variables currently in the VLDL database are testing date, age, sex, fasting/nonfasting, and components of the VAP test. From these primary variables, many additional variables were derived for inclusion in the master database. Other analytes measured by validated assays in subsets of the VLDL database include apolipoprotein B (apoB), apolipoprotein A1 (apoAI), high-sensitivity C-reactive protein (hsCRP), homocysteine, uric acid, insulin, hemoglobin A1c, 25-hydroxy vitamin D, cystatin C, lipoprotein-associated phosphatase (Lp-PLA2), thyroid stimulating hormone (TSH), free T3 and T4, pro-brain natriuretic peptide (pBNP), direct bilirubin, creatine phosphokinase (CPK), creatinine and other components of the comprehensive metabolic panel, magnesium, and phosphate.
- Conditions
- Lipid Disorders and Lipid Measurement
- Medical subject headings
- Lipid Metabolism Disorders
What is being measured
The primary outcome is the main question the study is designed to answer.
Low-density lipoprotein cholesterol level
Low-density lipoprotein cholesterol levels measured in milligrams per deciliter.
Measured: 4 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted3 Oct 2012 (estimated)
- Study startApr 2006
- Primary completionApr 2026
- Study completionApr 2030 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (24)Papers the sponsor has linked to this study.
- Other trials for Lipid Disorders and Lipid MeasurementStudies of the same condition, open and under way.
- More trials run by Johns Hopkins UniversityThe sponsor's other registered studies.
- 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
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 5,051,467 participants (actual)
Sponsor and investigators
- Lead sponsor
- Johns Hopkins University
- Sponsor type
- University, hospital or other
- Collaborators
- VAP Diagnostics Lab
- Responsible party
- Sponsor
- Investigators
- Steven R Jones, MD, Study director, Johns Hopkins UniversitySeth S Martin, MD, MHS, Principal investigator, Johns Hopkins University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01698489
- Sponsor's protocol ID
- IRB00520613-2
- Acronym
- VLDL
- Status last verified
- May 2026
- First submitted
- 1 Oct 2012
- Last updated
- 8 May 2026
- Results posted
- No
- Data monitoring committee
- No
Publications
Martin SS, Blaha MJ, Toth PP, Joshi PH, McEvoy JW, Ahmed HM, Elshazly MB, Swiger KJ, Michos ED, Kwiterovich PO, Kulkarni KR, Chimera J, Cannon CP, Blumenthal RS, Jones SR. Very large database of lipids: rationale and design. Clin Cardiol. 2013 Nov;36(11):641-8. doi: 10.1002/clc.22214. Epub 2013 Oct 1.
PubMed 24122913Martin SS, Blaha MJ, Elshazly MB, Brinton EA, Toth PP, McEvoy JW, Joshi PH, Kulkarni KR, Mize PD, Kwiterovich PO, Defilippis AP, Blumenthal RS, Jones SR. Friedewald-estimated versus directly measured low-density lipoprotein cholesterol and treatment implications. J Am Coll Cardiol. 2013 Aug 20;62(8):732-9. doi: 10.1016/j.jacc.2013.01.079. Epub 2013 Mar 21.
PubMed 23524048Ahmed, HM, Elshazly MB, Martin SS, Blaha MJ, Kulkarni KR, Jones SR. Ratio of Dense to Buoyant LDL Subclass is Associated with LDL Density Phenotype (VLDL-5). The Open Chemical and Biomedical Methods Journal 2013. 6:1-5.
Elshazly MB, Martin SS, Blaha MJ, Joshi PH, Toth PP, McEvoy JW, Al-Hijji MA, Kulkarni KR, Kwiterovich PO, Blumenthal RS, Jones SR. Non-high-density lipoprotein cholesterol, guideline targets, and population percentiles for secondary prevention in 1.3 million adults: the VLDL-2 study (very large database of lipids). J Am Coll Cardiol. 2013 Nov 19;62(21):1960-1965. doi: 10.1016/j.jacc.2013.07.045. Epub 2013 Aug 21.
PubMed 23973689Swiger KJ, Martin SS, Blaha MJ, Toth PP, Nasir K, Michos ED, Gerstenblith G, Blumenthal RS, Jones SR. Narrowing sex differences in lipoprotein cholesterol subclasses following mid-life: the very large database of lipids (VLDL-10B). J Am Heart Assoc. 2014 Apr 22;3(2):e000851. doi: 10.1161/JAHA.114.000851.
PubMed 24755154Miller PE, Martin SS, Toth PP, Santos RD, Blaha MJ, Nasir K, Virani SS, Post WS, Blumenthal RS, Jones SR. Screening and advanced lipid phenotyping in familial hypercholesterolemia: The Very Large Database of Lipids Study-17 (VLDL-17). J Clin Lipidol. 2015 Sep-Oct;9(5):676-83. doi: 10.1016/j.jacl.2015.06.015. Epub 2015 Jul 9.
PubMed 26350814Quispe R, Manalac RJ, Faridi KF, Blaha MJ, Toth PP, Kulkarni KR, Nasir K, Virani SS, Banach M, Blumenthal RS, Martin SS, Jones SR. Relationship of the triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio to the remainder of the lipid profile: The Very Large Database of Lipids-4 (VLDL-4) study. Atherosclerosis. 2015 Sep;242(1):243-50. doi: 10.1016/j.atherosclerosis.2015.06.057. Epub 2015 Jul 7.
PubMed 26232164Quispe R, Al-Hijji M, Swiger KJ, Martin SS, Elshazly MB, Blaha MJ, Joshi PH, Blumenthal RS, Sniderman AD, Toth PP, Jones SR. Lipid phenotypes at the extremes of high-density lipoprotein cholesterol: The very large database of lipids-9. J Clin Lipidol. 2015 Jul-Aug;9(4):511-8.e1-5. doi: 10.1016/j.jacl.2015.05.005. Epub 2015 Jun 19.
PubMed 26228668Elshazly MB, Quispe R, Michos ED, Sniderman AD, Toth PP, Banach M, Kulkarni KR, Coresh J, Blumenthal RS, Jones SR, Martin SS. Patient-Level Discordance in Population Percentiles of the Total Cholesterol to High-Density Lipoprotein Cholesterol Ratio in Comparison With Low-Density Lipoprotein Cholesterol and Non-High-Density Lipoprotein Cholesterol: The Very Large Database of Lipids Study (VLDL-2B). Circulation. 2015 Aug 25;132(8):667-76. doi: 10.1161/CIRCULATIONAHA.115.016163. Epub 2015 Jul 2.
PubMed 26137953Lupton JR, Faridi KF, Martin SS, Sharma S, Kulkarni K, Jones SR, Michos ED. Deficient serum 25-hydroxyvitamin D is associated with an atherogenic lipid profile: The Very Large Database of Lipids (VLDL-3) study. J Clin Lipidol. 2016 Jan-Feb;10(1):72-81.e1. doi: 10.1016/j.jacl.2015.09.006. Epub 2015 Sep 25.
PubMed 26892123Lupton JR, Quispe R, Kulkarni K, Martin SS, Jones SR. Serum homocysteine is not independently associated with an atherogenic lipid profile: The Very Large Database of Lipids (VLDL-21) study. Atherosclerosis. 2016 Jun;249:59-64. doi: 10.1016/j.atherosclerosis.2016.03.031. Epub 2016 Mar 26.
PubMed 27065242Sathiyakumar V, Park J, Golozar A, Lazo M, Quispe R, Guallar E, Blumenthal RS, Jones SR, Martin SS. Fasting Versus Nonfasting and Low-Density Lipoprotein Cholesterol Accuracy. Circulation. 2018 Jan 2;137(1):10-19. doi: 10.1161/CIRCULATIONAHA.117.030677. Epub 2017 Oct 16.
PubMed 29038168Faridi KF, Lupton JR, Martin SS, Banach M, Quispe R, Kulkarni K, Jones SR, Michos ED. Vitamin D deficiency and non-lipid biomarkers of cardiovascular risk. Arch Med Sci. 2017 Jun;13(4):732-737. doi: 10.5114/aoms.2017.68237. Epub 2017 Jun 12.
PubMed 28721139Sajja A, Park J, Sathiyakumar V, Varghese B, Pallazola VA, Marvel FA, Kulkarni K, Muthukumar A, Joshi PH, Gianos E, Hirsh B, Mintz G, Goldberg A, Morris PB, Sharma G, Blumenthal RS, Michos ED, Post WS, Elshazly MB, Jones SR, Martin SS. Comparison of Methods to Estimate Low-Density Lipoprotein Cholesterol in Patients With High Triglyceride Levels. JAMA Netw Open. 2021 Oct 1;4(10):e2128817. doi: 10.1001/jamanetworkopen.2021.28817.
PubMed 34709388Chilazi M, Zheng W, Park J, Marvel FA, Khoury S, Jones SR, Martin SS. Quantifying the contribution of lipoprotein(a) to all apoB containing particles. J Clin Lipidol. 2022 Mar-Apr;16(2):220-226. doi: 10.1016/j.jacl.2022.02.004. Epub 2022 Feb 12.
PubMed 35241398