HealthyEarly Phase 1PK/PDNCT01722669
Quercetin PK/PD Study in Healthy Adults and Patients With Hypercoagulable States
A Early Phase 1 study testing isoquercetin or quercetin in people with Healthy, run by Beth Israel Deaconess Medical Center at 1 site in United States.
Trial summary
The goal of this study is to evaluate how much quercetin or isoquercetin is absorbed after a single dose and evaluate for pharmacokinetic inhibition of protein disulfide isomerase. Pharmacodynamic studies will also be performed in an additional cohort of 10 patients with evidence of antiphospholipid antibodies Read more about this study
- Who is it for?
- Ages 18 to 80 yearsHealthy volunteers can take part
- Conditions the study is for
- Healthy
- What is being tested?
- isoquercetin or quercetin
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 38 participants
- Where
- 1 siteUnited States
- Study dates
- May 2012to Dec 2019
- Phase
- Early Phase 1
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 18 to 80 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Subject is willing to participate and provide informed consent
- Subject is considered reliable and capable of adhering to the protocol per the judgment of the Investigator
- Subjects in group D must exhibit good organ reserves (within prior 4 weeks) defined as:
- Estimated GFR >35 (formula),
- Platelet count >65 K/uL,
- Hemoglobin >10.5 grams/dL
Show all 10Show fewer
- Total bilirubin <2.0 mg/dL
- Minimum age 18 years old
- Body mass index (BMI) between 18 and 35 kg/m2
- For cohort D (antiphospholipid antibodies) a. Subjects in group D must have at least one positive antiphospholipid antibody within the last 8 weeks and/or previous confirmed antibodies (2 or more occasions at least 12 weeks apart) : i. Positive lupus anticoagulant ii. anticardiolipin antibody IgM or IgG (>40U GPL) iii. anti-β2 Glycoprotein1 antibody titer (>35 units)
Who cannot join
- Pregnant. If female of child-bearing age, negative urinary pregnancy test prior to dosing of quercetin or isoquercetin
- No history of malabsorptive gastrointestinal disorder
- Currently taking aspirin, NSAIDS, warfarin, low-molecular weight heparin or other anticoagulants (such as direct thrombin inhibitors or factor X inhibitors)
- Note: Study subjects taking aspirin or NSAIDS, if treating physician concurs, are permitted to enroll if plan to hold for aspirin 10 days or NSAIDS 24 hours prior to dosing of quercetin/isoquercetin
- Prescribed niacin for hyperlipidemia
- Known HIV
- History of sensitivity or intolerance to flavonoids, niacin or ascorbic acid
- May not have uncontrolled intercurrent illness including, but not limited to ongoing or active infection, hepatitis, symptomatic congestive heart failure, unstable angina pectoris or cardiac arrhythmia
Trial locations and contacts
1 site in 1 country.
United States1 site
Beth Israel Deaconess Medical Center
Boston, Massachusetts, 02215
About this study
Official title: Pharmacokinetic and Pharmacodynamic Study of Oral Quercetin and Isoquercetin in Healthy Adults and Patients With Hypercoagulable States.
The goal of this study is to evaluate how much quercetin or isoquercetin is absorbed after a single dose and evaluate for pharmacokinetic inhibition of protein disulfide isomerase. Pharmacodynamic studies will also be performed in an additional cohort of 10 patients with evidence of antiphospholipid antibodies
Read the detailed description
To compare the absorption and activity of quercetin or isoquercetin with or without ascorbic acid in healthy adults. Oral chews containing quercetin (500mg) or isoquercetin(500 mg total) with or without ascorbic acid will be given. Pharmacokinetic parameters (AUC, Cmax, Tmax, elimination half-life) will be determined over 24 hours (8 time points). Pharmacodynamic inhibition of protein disulfide isomerase activity will also be assessed.
In addition to healthy subjects, a cohort of 10 individuals with antiphospholipid antibodies will participate. These participants will receive isoquercetin 1000 mg and have pharmacodynamics studies performed at time 0 and 4 hours.
All study drugs will be provided by Quercegen Pharma.
- Conditions
- Healthy
- Being tested
- isoquercetin or quercetin
- Keywords
- quercetin, isoquercetin, pharmacokinetic, pharmacodynamic
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
isoquercetin or quercetinDrug
Single dose PK/PD study
| Study group | Role | What they receive |
|---|---|---|
| Quercetin | Experimental | Single dose of quercetin with or without ascorbic acid Receives: Drug: isoquercetin or quercetin |
| Isoquercetin | Active comparator | Single dose of isoquercetin with or without ascorbic acid Receives: Drug: isoquercetin or quercetin |
What is being measured
The primary outcome is the main question the study is designed to answer.
AUC
AUC 0-24 hours of measured plasma quercetin aglycone for Arms A1, B1, A2, B2, C Collected at timepoints: baseline and 1, 2, 4, 6, 8, and 24 hours after dose. PK and PDI samples were not measured for Arm D (anti-phospholipid antibody cohort)
Measured: 24 hours
Secondary outcomes (2)
Reductase Activity of PDI Using Dieosin Glutathione Disulfide
Measurement of protein disulfide inhibition in plasma using a fluorescent PDI substrate (dieosin glutathione disulfide)
Measured: 2 hours. Not measured in D
Platelet-induced Thrombin Generation (U/mL)
Thrombin induced thrombin generation measured in patient plasma
Measured: 4 hours
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted7 Nov 2012 (estimated)
- Study startMay 2012
- Primary completionDec 2019
- Study completionDec 2019
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for HealthyStudies of the same condition, open and under way.
- More trials run by Beth Israel Deaconess Medical CenterThe 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
- Interventional
- Phase
- Early Phase 1
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Enrolment
- 38 participants (actual)
Sponsor and investigators
- Lead sponsor
- Beth Israel Deaconess Medical Center
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jeff Zwicker, Beth Israel Deaconess Medical Center
- Investigators
- Jeffrey Zwicker, MD, Principal investigator, Beth Israel Deaconess Medical Center
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01722669
- Sponsor's protocol ID
- 2012P000022
- Acronym
- PK/PD
- Status last verified
- Oct 2020
- First submitted
- 10 May 2012
- Last updated
- 12 Oct 2020
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- Yes: Contact PI
Publications
Stopa JD, Neuberg D, Puligandla M, Furie B, Flaumenhaft R, Zwicker JI. Protein disulfide isomerase inhibition blocks thrombin generation in humans by interfering with platelet factor V activation. JCI Insight. 2017 Jan 12;2(1):e89373. doi: 10.1172/jci.insight.89373.
PubMed 28097231
Study at a glance
From the registry record, last updated by the sponsor on 12 Oct 2020. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Pharmacokinetic and Pharmacodynamic Study of Oral Quercetin and Isoquercetin in Healthy Adults and Patients With Hypercoagulable States.
- ClinicalTrials.gov ID
- NCT01722669
- Acronym / sponsor ID
- PK/PD / 2012P000022
- Conditions
- Healthy
- Keywords
- quercetin, isoquercetin, pharmacokinetic, pharmacodynamic
- Phase
- Early Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 38 participants (actual)
- Lead sponsor
- Beth Israel Deaconess Medical CenterUniversity, hospital or other
- Study start
- May 2012
- Primary completion
- Dec 2019 (actual)
- Study completion
- Dec 2019 (actual)
- First posted
- 7 Nov 2012 (estimated)
- Results
- Posted 12 Oct 2020
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The goal of this study is to evaluate how much quercetin or isoquercetin is absorbed after a single dose and evaluate for pharmacokinetic inhibition of protein disulfide isomerase. Pharmacodynamic studies will also be performed in an additional cohort of 10 patients with evidence of antiphospholipid antibodies
Detailed description
To compare the absorption and activity of quercetin or isoquercetin with or without ascorbic acid in healthy adults. Oral chews containing quercetin (500mg) or isoquercetin(500 mg total) with or without ascorbic acid will be given. Pharmacokinetic parameters (AUC, Cmax, Tmax, elimination half-life) will be determined over 24 hours (8 time points). Pharmacodynamic inhibition of protein disulfide isomerase activity will also be assessed.
In addition to healthy subjects, a cohort of 10 individuals with antiphospholipid antibodies will participate. These participants will receive isoquercetin 1000 mg and have pharmacodynamics studies performed at time 0 and 4 hours.
All study drugs will be provided by Quercegen Pharma.
Study design
- Primary purpose
- Basic science
- Allocation
- Non-randomised
- Intervention model
- Parallel groups
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Quercetin | Experimental | Drug: isoquercetin or quercetinSingle dose of quercetin with or without ascorbic acid |
| Isoquercetin | Active comparator | Drug: isoquercetin or quercetinSingle dose of isoquercetin with or without ascorbic acid |
Who may qualify
- Ages
- 18 to 80 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- Subject is willing to participate and provide informed consent
- Subject is considered reliable and capable of adhering to the protocol per the judgment of the Investigator
- Subjects in group D must exhibit good organ reserves (within prior 4 weeks) defined as:
- Minimum age 18 years old
- Body mass index (BMI) between 18 and 35 kg/m2
Key exclusion criteria (8 listed)
- Pregnant. If female of child-bearing age, negative urinary pregnancy test prior to dosing of quercetin or isoquercetin
- No history of malabsorptive gastrointestinal disorder
- Currently taking aspirin, NSAIDS, warfarin, low-molecular weight heparin or other anticoagulants (such as direct thrombin inhibitors or factor X inhibitors)
- Prescribed niacin for hyperlipidemia
- Known HIV
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 |
|---|---|---|
| isoquercetin or quercetinSingle dose PK/PD study | Drug | Isoquercetin, Quercetin |
Primary outcome
AUC
Time frame: 24 hours
AUC 0-24 hours of measured plasma quercetin aglycone for Arms A1, B1, A2, B2, C Collected at timepoints: baseline and 1, 2, 4, 6, 8, and 24 hours after dose. PK and PDI samples were not measured for Arm D (anti-phospholipid antibody cohort)
2 secondary outcomes
Reductase Activity of PDI Using Dieosin Glutathione Disulfide
Time frame: 2 hours. Not measured in D
Platelet-induced Thrombin Generation (U/mL)
Time frame: 4 hours
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 12 Oct 2020.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 28097231Stopa JD, Neuberg D, Puligandla M, Furie B, Flaumenhaft R, Zwicker JI. Protein disulfide isomerase inhibition blocks thrombin generation in humans by interfering with platelet factor V activation. JCI Insight. 2017 Jan 12;2(1):e89373. doi: 10.1172/jci.insight.89373.
- Individual participant dataSharing planned: Yes. Contact PI
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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. This study is not recruiting at the moment.
Jeffrey Zwicker, MD principal investigator
Beth Israel Deaconess Medical Center
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Early Phase 1 study testing isoquercetin or quercetin in people with Healthy, run by Beth Israel Deaconess Medical Center at 1 site in United States.
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 10 inclusion and 8 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: finished, as of the sponsor's last update on 12 Oct 2020. 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 United States. 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.
What does this phase mean?
Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 12 Oct 2020). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
AUC (time frame: 24 hours). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01722669, which also lists 1 linked publication.
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 12 Oct 2020; AzTrials last refreshed its copy on 7 Nov 2026.