The COVID-19 VaccinE Response and Co-Administration in Rheumatology Patients (COVER-CoAd)

May 5, 2026 updated by: Kevin Winthrop, Oregon Health and Science University

The COvid19 VaccinE Response and Co-Administration in Rheumatology Patients (COVER-CoAd)

Based on the experience with influenza, pneumococcal, and shingles vaccinations in rheumatic disease populations, it is clear that some disease modifying anti-rheumatic drugs and the immunomodulatory therapies used to treat immune-mediated inflammatory diseases have the capacity to blunt immune responses to COVID-19 vaccines.

Several studies have suggested that patients with autoimmune conditions may be at increased risk of poor COVID-19 outcomes. There is an urgent need to better clarify the immunogenicity and safety of COVID-19 vaccines in people living with rheumatic disease who use immunomodulatory therapies. Boosters at annual or other frequency are available, and there is a need to understand whether these vaccines can be given concurrently with other routine vaccines.

Study Overview

Detailed Description

The COVID-19 pandemic, caused by the coronavirus SARS-CoV-2 (severe acute respiratory syndrome coronavirus 2), has infected a substantial portion of the world population, leading to millions of deaths since its first description in December of 2019. Recently, several SARS-CoV-2 vaccines have shown excellent efficacy and tolerability in the general population and have been either fully approved or given emergency use authorization by the US Food and Drug Administration (FDA), while several other vaccines are in late-stage clinical trials.

Patients with autoimmune conditions, however, particularly those receiving immunomodulatory therapies, have largely been excluded from clinical trials. Yet, certain immunomodulatory therapies have been shown to affect responses to vaccines, with effects varying depending on the medication and type of vaccine. In line with the experience with influenza, pneumococcal and shingles vaccinations in rheumatic disease populations, it is clear that some disease modifying anti-rheumatic drugs (DMARDs) and the immunomodulatory therapies used to treat immune-mediated inflammatory diseases have the capacity to blunt immune responses to COVID-19 vaccines. In addition, a hypothetical concern is that stimulation of the immune system could lead to flares of autoimmune conditions, or new onset autoimmune manifestations. Concerns about flare or disease worsening with vaccination is also substantial among patients themselves, and can sometimes be a reason for vaccine hesitancy or refusal.

Due to recent development and subsequent massive deployment of SARS-CoV-2 vaccines to combat the pandemic, their safety and immunogenicity in patients receiving immunomodulatory therapies had received limited evaluation to date. At the same time, several studies have suggested that patients with autoimmune conditions may be at increased risk of poor COVID-19 outcomes, including hospitalization and death, raising the importance of effective vaccination in this setting. In this context, there is an urgent need to better clarify the immunogenicity and safety of COVID-19 vaccines in people living with rheumatic disease who use immunomodulatory therapies. Additionally, the likelihood that patients will need to be vaccinated in the future again for COVID-19 is high. Boosters at annual or other frequency are likely for all (and have now already been recommended for immunocompromised individuals), and the need to understand whether these vaccines can be given concurrently with other routine vaccines will be important for both patients and clinicians, as well as public health officials. The "vaccine moment" clinically frequently offers the opportunity to give multiple vaccines at one time. Vaccines for other respiratory pathogens (e.g. influenza), hepatitis A, pertussis, and other disease are indicated in large segments of the population, including being of utmost importance in the elderly and those with various chronic conditions and/or immunosuppression. It is imperative to understand whether co-administrated vaccines affect the immunogenicity, efficacy, or safety of COVID-19 vaccines and those vaccines of public health significance given concurrently.

With this background in mind and the momentum of the vaccine campaign in the US to date, whereby the majority of at-risk rheumatology and other populations have received their initial vaccine series, this protocol will focus on evaluating vaccine responses in those receiving a booster mRNA SARS-CoV-2 vaccination. This is important, as boosters are now recommended for all adult patients in the US who have received any prior SARS-CoV-2 vaccination. Further, given a large percentage of rheumatology patients can have sub-optimal or lower immune responses, booster vaccinations will be likely of utmost importance to these and other immunosuppressed groups.

Study Type

Interventional

Enrollment (Actual)

129

Phase

  • Phase 4

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

    • Alabama
      • Northport, Alabama, United States, 35473
        • Center for Rheumatic Diseases
    • Florida
      • Riverview, Florida, United States, 33569
        • Southwest Florida Rheumatology
    • Idaho
      • Boise, Idaho, United States, 83702
        • St. Luke's Rheumatology
    • New Mexico
      • Clovis, New Mexico, United States, 88101
        • Jayashree Sinha, MD
    • Oregon
      • Portland, Oregon, United States, 97239
        • Oregon Health & Science University
    • Pennsylvania
      • Duncansville, Pennsylvania, United States, 16635
        • Altoona Center for Clinical Research
    • Tennessee
      • Crossville, Tennessee, United States, 38555
        • Cumberland Rheumatology

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 and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Patients must meet all of the inclusion criteria at the time of screening
  • Must be 18 years of age or older
  • Must live in the United States
  • Scheduled for SARS-CoV-2 booster vaccination
  • Patients in Rheumatic Disease arm (arm 4) must have inflammatory arthritis (e.g. rheumatoid arthritis, psoriatic arthritis, other) and be receiving stable doses of one of the following medication classes: TNF antagonists, B-cell depletion agents, IL-6 inhibitors, JAK inhibitors, IL-12/23 or IL-23 blockers, IL-17 inhibitors, methotrexate, sulfasalazine, leflunamide, or chronic prednisone (>15mg/day). Stable dosing is defined as no change in dose in the 30 days prior to enrolment.
  • For Arms 1-3: patients seen by rheumatologists who do not have active rheumatic disease requiring immunosuppressive therapy. These will include patients with a past history of auto-immune disease that is no longer active, as well as those with other chronic conditions not associated with autoimmune condition such as osteoarthritis, osteoporosis, or other.
  • Patients in the Co-administration arms (arms 2 and 3) must meet ACIP recommendations for the use of HAVRIX® (i.e. not previously vaccinated) and BOOSTRIX® (i.e. last immunization >9 years ago).
  • Patients who, in the opinion of the investigator, can and will comply with the requirements of the protocol (e.g. completion of the REDCap/diary cards, capable of receiving text messages and/or have a personal email address, return for follow-up visits).

Exclusion Criteria:

  • Active infection with SARS-CoV-2 (symptom onset or first positive test in the 14 days prior to recruitment) / disease
  • Any known contraindication to SARS-CoV-2 (booster) vaccination, including severe allergy to vaccine components
  • Prior use of adenoviral COVID-19 vaccination
  • Known or history of HIV/AIDS
  • Currently receiving radiation or chemotherapy for any type of malignancy
  • Receipt of any immunizations other than SARS-CoV-2 within two weeks prior planned SARS-CoV-2 vaccination, or scheduled within 10 weeks after visit 1
  • Significant underlying illness that would be expected to prevent completion of the study (e.g., life-threatening disease likely to limit survival to < 1 year)
  • Patients who have a previous history of pericarditis/myocarditis associated with vaccination
  • Any other reason that, in the opinion of the site investigator, would interfere with required study related evaluations (e.g. uncontrolled comorbidity)
  • Prior receipt of any hepatitis A containing vaccine
  • Prior receipt of diphtheria, acellular pertussis, or tetanus vaccination within the last 9 years
  • History of physician-diagnosed or laboratory confirmed pertussis within the past 5 years; any history of diphtheria, tetanus disease, or hepatitis A.

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: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Arm 1 (control group, sequential administration)

Individuals with other chronic conditions and not active rheumatic disease (defined as being treated), who are eligible to receive their tdap booster and hepA vaccines, and receiving a COVID-19 booster vaccination.

This arm will receive sequential administration of both tdap booster and hepA vaccinations.

Vaccination series administered to prevent hepA infection.
Other Names:
  • Havrix
Vaccination booster administered to prevent diphtheria, pertussis, and tetanus
Other Names:
  • Boostrix
Active Comparator: Arm 2 (co-administration group)

Individuals with other chronic conditions and not active rheumatic disease (defined as being treated), who are eligible to receive their tdap booster and hepA vaccines, and receiving a COVID-19 booster vaccination.

This arm will receive co-administration of hepA vaccination.

Vaccination series administered to prevent hepA infection.
Other Names:
  • Havrix
Active Comparator: Arm 3 (co-administration group)

Individuals with other chronic conditions and not active rheumatic disease (defined as being treated), who are eligible to receive their tdap booster and hepA vaccines, and receiving a COVID-19 booster vaccination.

This arm will receive co-administration of tdap booster vaccination.

Vaccination booster administered to prevent diphtheria, pertussis, and tetanus
Other Names:
  • Boostrix
No Intervention: Arm 4 (Inflammatory arthritis patients using DMARDS)

Individuals with inflammatory arthritis patients using DMARDS, who are eligible to receive their tdap booster and hepA vaccines, and receiving a COVID-19 booster vaccination.

This arm will only receive the standard of care COVID-19 booster vaccination.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Ratio of participants' anti-RBD IgG antibodies specific to SARS-CoV-2 measured post-vaccination for those who received only the SARS-CoV-2 booster compared to those who received sequential vaccination with the SARS-CoV-2 booster.
Time Frame: 2 years
Descriptively evaluate the immunogenicity of anti-spike IgG among patients receiving SARS-CoV-2 booster vaccines alone (Arm 4 N=100) as compared to patients receiving SARS-CoV-2 booster vaccine with sequential vaccination (Arm 1 N=100). The geometric mean concentration ratio (GMC) of Arm 4 to Arm 1 at Week 4 will be reported.
2 years
Ratio of participants' anti-RBD IgG antibodies specific to SARS-CoV-2 for those who received sequential vaccination with the SARS-CoV-2 booster compared to those who received a tdap booster co-administered with the SARS-CoV-2 booster.
Time Frame: 2 years
Descriptively evaluate the immunogenicity of anti-spike IgG among patients receiving SARS-CoV-2 booster vaccines with sequential vaccination (Arm 1 N=100) as compared to patient receiving SARS-CoV-2 booster vaccine with co-administration of BOOSTRIX® (Arm 2 N=100). The geometric mean concentration ratio (GMC) of Arm 1 to Arm 2 at each 4-week interval for Arm 1 (e.g. Week 4, 8, and 36) will be reported.
2 years
Ratio of participants' anti-RBD IgG antibodies specific to SARS-CoV-2 for those who received sequential vaccination with the SARS-CoV-2 booster compared to those who received a hepA vaccination co-administered with the SARS-CoV-2 booster.
Time Frame: 2 years
Descriptively evaluate the immunogenicity of anti-spike IgG among patients receiving SARS-CoV-2 booster vaccines with sequential vaccination (Arm 1 N=100) as compared to patient receiving SARS-CoV-2 booster vaccine with co-administration of HAVRIX® (Arm 3 N=100). The geometric mean concentration ratio (GMC) of Arm 1 to Arm 3 at each 4-week interval for Arm 1 (e.g. Week 4, 8, and 36) will be reported.
2 years
Number of participants with solicited localized and general symptoms (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines alone (Arm 4 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine with sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with solicited local and general symptoms that occur within an 8 day period following each vaccine dose administered as assessed by CTCAE will be reported.
2 years
Number of participants with unsolicited events (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines alone (Arm 4 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine with sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with unsolicited events occurring within a 31 day period following each vaccine dose administered as assessed by CTCAE will be reported.
2 years
Number of medically attended events (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) or co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). All medically attended events.
2 years
Number of confirmed cases of COVID-19 (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) or co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of confirmed cases of COVID-19 as diagnosed by PCR or antigen-based testing.
2 years
Number of potential immune-mediated diseases (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) or co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of potential immune-mediated diseases (pIMDs; new onset or exacerbation of current).
2 years
Number of serious adverse events (Arm 4 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) or co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of serious adverse events as assessed by CTCAE.
2 years
Ratio of participants' anti-RBD IgG antibodies specific to SARS-CoV-2 for those who received a tdap booster co-administered with the SARS-CoV-2 booster compared to those who received sequential vaccination with the SARS-CoV-2 booster.
Time Frame: 2 years
Descriptively evaluate the immunogenicity of anti-spike IgG among patients receiving SARS-CoV-2 booster vaccine with co-administration of BOOSTRIX® (Arm 2 N=100) as compared to patients receiving SARS-CoV-2 booster vaccine with sequential vaccination (Arm 1 N=100). The geometric mean concentration ratio (GMC) of Arm 2 to Arm 1 at 4 weeks post-vaccination for SARS CoV-2 and BOOSTRIX®.
2 years
Ratio of participants' anti-RBD IgG antibodies specific to SARS-CoV-2 for those who received a hepA vaccination co-administered with the SARS-CoV-2 booster compared to those who received sequential vaccination with the SARS-CoV-2 booster.
Time Frame: 2 years
Descriptively evaluate the immunogenicity of anti-spike IgG among patients receiving SARS-CoV-2 booster vaccine with co-administration of HAVRIX® (Arm 3 N=100) as compared to patients receiving SARS-CoV-2 booster vaccine with sequential vaccination (Arm 1 N=100). The geometric mean concentration ratio (GMC) of Arm 3 to Arm 1 at 4 weeks post-vaccination for dose 2 of HAVRIX® will be reported.
2 years
Number of participants with solicited localized and general symptoms (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with solicited local and general symptoms that occur within an 8 day period following each vaccine dose administered as assessed by CTCAE.
2 years
Number of participants with unsolicited events (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with unsolicited events occurring within a 31 day period following each vaccine dose administered as assessed by CTCAE.
2 years
Number of medically attended events (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). All medically attended events.
2 years
Number of confirmed cases of COVID-19 (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of confirmed cases of COVID-19 as diagnosed by PCR or antigen-based testing.
2 years
Number of potential immune-mediated diseases (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of potential immune-mediated diseases (pIMDs; new onset or exacerbation of current).
2 years
Number of serious adverse events (Arm 2 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of BOOSTRIX® (Arm 2 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of serious adverse events.
2 years
Number of participants with solicited localized and general symptoms (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with solicited local and general symptoms that occur within an 8 day period following each vaccine dose administered as assessed by CTCAE.
2 years
Number of participants with unsolicited events (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of participants with unsolicited events occurring within a 31 day period following each vaccine dose administered as assessed by CTCAE
2 years
Number of medically attended events (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). All medically attended events
2 years
Number of confirmed cases of COVID-19 (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of confirmed cases of COVID-19 as diagnosed by PCR or antigen-based testing
2 years
Number of potential immune-mediated diseases (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of potential immune-mediated diseases (pIMDs; new onset or exacerbation of current).
2 years
Number of serious adverse events (Arm 3 to Arm 1)
Time Frame: 2 years
Descriptively evaluate the safety and reactogenicity of patients receiving SARS-CoV-2 booster vaccines with either co-administration of HAVRIX® (Arm 3 N=100; cell-mediated immunity subset N=50 of first enrolled) as compared to patients receiving SARS-CoV-2 booster vaccine sequential vaccination (Arm 1 N=100; cell-mediated immunity subset N=50 of first enrolled). Number of serious adverse events as assessed by CTCAE.
2 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

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)

October 11, 2022

Primary Completion (Actual)

April 1, 2025

Study Completion (Estimated)

August 1, 2026

Study Registration Dates

First Submitted

September 2, 2022

First Submitted That Met QC Criteria

September 14, 2022

First Posted (Actual)

September 16, 2022

Study Record Updates

Last Update Posted (Actual)

May 6, 2026

Last Update Submitted That Met QC Criteria

May 5, 2026

Last Verified

May 1, 2026

More Information

Terms related to this study

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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