Covid19NCT04772703
DNA Damage in Critically Ill COVID-19 Patients
An observational study of Covid19 and Organ Failure, Multiple, run by University Hospital Hradec Kralove at 1 site in Czechia.
Trial summary
Critically ill patients with COVID-19 are exposed to high oxidative stress which is potential harm to the DNA. Peripheral lymphocytes' DNA will be investigated using the comet assay on changes in oxidative damage to the purine and pyrimidine bases and single-stranded DNA breaks. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Covid19, Organ Failure, Multiple, DNA Damage
- What is being tested?
- COMET ASSAY
- How many people
- 10 participants
- Where
- 1 siteCzechia
- Study dates
- 23 Nov 2020to 28 Feb 2021
- Phase
- Observational
- Are there results?
- None posted in the registry
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: Critically ill patients admitted to ICU with signs and symptoms of organ failure, mainly respiratory failure. Need for means of respiratory and/or circulatory support. A positive test of COVID-19: RT-PCR test or bed-side antigen test.
Who may be able to join
- critically ill adult patient admitted to ICU with positive RT-PCR test or bed-side antigen test on COVID-19 with signs and symptoms of organ failure
- informed consent
Who cannot join
- rejection by the patient to sign an informed consent
Trial locations and contacts
1 site in 1 country.
Czechia1 site
University Hospital Hradec Kralove
Hradec Králové, Třebeš, 50005
About this study
Official title: DNA Damage in Critically Ill Patients With SARS-CoV-2 Infection With Organ Failure
Critically ill patients with COVID-19 are exposed to high oxidative stress which is potential harm to the DNA. Peripheral lymphocytes' DNA will be investigated using the comet assay on changes in oxidative damage to the purine and pyrimidine bases and single-stranded DNA breaks.
Read the detailed description
Data from hospital documentation will be recorded for all patients: demographic data, clinical data (Horowitz index, the necessity of pronation position, opening maneuvers, connection to ECMO, state of the circulation and other organ functions), laboratory data: parameters of inflammatory activity and COVID-19 specific markers (blood count with differential leukocyte count, CRP, IL-6, ferritin, procalcitonin, D-dimers).
In the study, 4 ml of heparinized peripheral blood will be collected for analytical purposes beyond standard practice for lymphocyte isolation and monitoring of oxidative DNA damage upon admission to the ICU (D1), after 2 days (D3) and on day 7 (D7) of the hospitalization. The same blood sample will be used to determine EPA and DHA omega-3 in erythrocyte membranes. At the same intervals and frequency, 10 ml of urine will be collected for the determination of 8-hydroxy-2-deoxyquanosine (8-OHdG), so a total of 30 ml of urine will be collected for analytical purposes.
Details for analytical processing: peripheral blood lymphocyte damage will be assessed using the alkaline COMET ASSAY method for DNA breakage and modified COMET ASSAY using specific enzymes for the detection of oxidized bases, endonuclease III (ENDO III) for the detection of oxidized pyrimidines and formamidopyrimidine DNA glycosylase (FPG) for the detection of oxidized purines. Leukocyte repair capacity will be determined using a modified COMET ASSAY, which uses extracts of patient lymphocytes and HeLa cells with defined DNA damage. The extent of 8-hydroxy-2-deoxyquanosine (8-OHdG) DNA damage in patients' urine will be determined by determining the concentration of 8-OHdG by ELISA.
- Conditions
- Covid19, Organ Failure, Multiple, DNA Damage
- Being tested
- COMET ASSAY
- Medical subject headings
- COVID-19, Multiple Organ Failure
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
COMET ASSAYDiagnostic test
The description in the detailed description of the study
What is being measured
The primary outcome is the main question the study is designed to answer.
single-stranded DNA breaks
Changes in the single-stranded DNA breaks in peripheral lymphocytes
Measured: One week
oxidation of DNA bases
Changes in oxidised purine and pyrimidine bases of peripheral lymphocytes DNA
Measured: One week
Secondary outcomes (1)
Mortality
All cause 30-day mortality
Measured: One month
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Feb 2021
- Study start23 Nov 2020
- Primary completion28 Feb 2021
- Study completion28 Feb 2021
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Covid19Studies 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
- Prospective
- Enrolment
- 10 participants (actual)
Sponsor and investigators
- Lead sponsor
- University Hospital Hradec Kralove
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04772703
- Sponsor's protocol ID
- CVV_COVID-19_DNA
- Status last verified
- Sep 2022
- First submitted
- 25 Feb 2021
- Last updated
- 27 Sep 2022
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 27 Sep 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- DNA Damage in Critically Ill Patients With SARS-CoV-2 Infection With Organ Failure
- ClinicalTrials.gov ID
- NCT04772703
- Acronym / sponsor ID
- CVV_COVID-19_DNA
- Conditions
- Covid19, Organ Failure, Multiple, DNA Damage
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 10 participants (actual)
- Lead sponsor
- University Hospital Hradec KraloveUniversity, hospital or other
- Study start
- 23 Nov 2020 (actual)
- Primary completion
- 28 Feb 2021 (actual)
- Study completion
- 28 Feb 2021 (actual)
- First posted
- 26 Feb 2021 (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.
Critically ill patients with COVID-19 are exposed to high oxidative stress which is potential harm to the DNA. Peripheral lymphocytes' DNA will be investigated using the comet assay on changes in oxidative damage to the purine and pyrimidine bases and single-stranded DNA breaks.
Detailed description
Data from hospital documentation will be recorded for all patients: demographic data, clinical data (Horowitz index, the necessity of pronation position, opening maneuvers, connection to ECMO, state of the circulation and other organ functions), laboratory data: parameters of inflammatory activity and COVID-19 specific markers (blood count with differential leukocyte count, CRP, IL-6, ferritin, procalcitonin, D-dimers).
In the study, 4 ml of heparinized peripheral blood will be collected for analytical purposes beyond standard practice for lymphocyte isolation and monitoring of oxidative DNA damage upon admission to the ICU (D1), after 2 days (D3) and on day 7 (D7) of the hospitalization. The same blood sample will be used to determine EPA and DHA omega-3 in erythrocyte membranes. At the same intervals and frequency, 10 ml of urine will be collected for the determination of 8-hydroxy-2-deoxyquanosine (8-OHdG), so a total of 30 ml of urine will be collected for analytical purposes.
Details for analytical processing: peripheral blood lymphocyte damage will be assessed using the alkaline COMET ASSAY method for DNA breakage and modified COMET ASSAY using specific enzymes for the detection of oxidized bases, endonuclease III (ENDO III) for the detection of oxidized pyrimidines and formamidopyrimidine DNA glycosylase (FPG) for the detection of oxidized purines. Leukocyte repair capacity will be determined using a modified COMET ASSAY, which uses extracts of patient lymphocytes and HeLa cells with defined DNA damage. The extent of 8-hydroxy-2-deoxyquanosine (8-OHdG) DNA damage in patients' urine will be determined by determining the concentration of 8-OHdG by ELISA.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Critically ill patients admitted to ICU with signs and symptoms of organ failure, mainly respiratory failure. Need for means of respiratory and/or circulatory support. A positive test of COVID-19: RT-PCR test or bed-side antigen test.
Key inclusion criteria (2 listed)
- critically ill adult patient admitted to ICU with positive RT-PCR test or bed-side antigen test on COVID-19 with signs and symptoms of organ failure
- informed consent
Key exclusion criteria (1 listed)
- rejection by the patient to sign an informed consent
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 |
|---|---|---|
| COMET ASSAYThe description in the detailed description of the study | Diagnostic test | – |
Primary outcome
single-stranded DNA breaks
Time frame: One week
Changes in the single-stranded DNA breaks in peripheral lymphocytes
oxidation of DNA bases
Time frame: One week
Changes in oxidised purine and pyrimidine bases of peripheral lymphocytes DNA
1 secondary outcome
Mortality
Time frame: One month
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Sep 2022.
- Individual participant dataSharing planned: No
Related trials for Covid19
Recruiting
Whole-body Cryotherapy in Those With Chronic Fatigue: A Feasibility Study
ME/CFS, Fibromyalgia (FM)
Not yet recruitingPhase 1
Phase I Open-Label Safety Trial of Pembrolizumab for Neurological Post- Acute Sequelae of SARS-CoV-2 (PD1-PASC I)
Post-Acute COVID-19 Syndrome
Active, not recruiting
Working Towards Empowered Community-driven Approaches to Increase Vaccination and Preventive Care Engagement
COVID-19
Active, not recruitingObservational study
Epigenetic Changes in Long COVID Patients
Long COVID-19 Syndrome, Long COVID Symptoms
RecruitingPhase 3
Randomized, Embedded, Multifactorial Adaptive Platform Trial for Community- Acquired Pneumonia
Respiratory Tract Diseases, Influenza (Pandemic)
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.
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 Covid19 and Organ Failure, Multiple, run by University Hospital Hradec Kralove at 1 site in Czechia.
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 2 inclusion and 1 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 27 Sep 2022. 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 Czechia. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
single-stranded DNA breaks (time frame: One week). The study lists 2 primary outcomes in all. 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 27 Sep 2022.