SARS-CoV-2 Acute Respiratory DiseaseNCT05063214
Muscle Evaluation of Patients Infected by the Coronavirus
An observational study of SARS-CoV-2 Acute Respiratory Disease, run by Hospital Israelita Albert Einstein at 1 site in Brazil.
Trial summary
Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) presents risk to develop muscle weakness associated with prolonged period of mechanical ventilation support and hospital stay. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- SARS-CoV-2 Acute Respiratory Disease
- What is being tested?
- Muscle ultrasound evaluation
- How many people
- 138 participants
- Where
- 1 siteBrazil
- Study dates
- 30 Sep 2021to Sep 2022
- How long will I take part?
- 6 Months
- 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: SARS-CoV-2 patients admitted to the intensive care unit requiring invasive mechanical ventilation.
Who may be able to join
- patients admitted to ICU
- having a confirmed diagnosis of COVID-19
- requiring invasive mechanical ventilation.
Who cannot join
- exclusive palliative care;
- neuromuscular diseases;
- patients who evolve with the need for lower limb amputation;
- previous known diaphragm malformations and dysfunctions;
- patients transferred from other institutions under invasive mechanical ventilation;
- clinical conditions that make the respiratory and peripheral muscle assessment through ultrasound unfeasible.
Trial locations and contacts
1 site in 1 country.
Brazil1 site, 1 recruiting
- Recruiting
Hospital Israelita Albert Einstein
São Paulo, 05652-900
Ricardo K Nawa, PT MSc PhD, +55 11 2151-0603, ricardo.nawa@einstein.br
Carla L Batista, PT, +55 11 2151-0603, carla.batista@einstein.br
About this study
Official title: Muscle Evaluation of Patients Infected by the Coronavirus Requiring Mechanical Ventilation
Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) presents risk to develop muscle weakness associated with prolonged period of mechanical ventilation support and hospital stay.
Read the detailed description
Intensive care unit (ICU) acquired muscle weakness affects both respiratory and peripheral muscles and can contribute to worsen clinical and functional outcomes. In this way, ultrasonography muscle evaluation could help to identify early alterations guiding the therapeutic planning and allowing to monitor the interventions performed. Therefore, the investigators intend to follow up mechanically ventilated patients with confirmed diagnosis of COVID-19 during ICU stay to quantify the diaphragm, parasternal intercostal, abdominals and femoral quadriceps muscles thickness assessed by ultrasonography. Additionally, functional capacity, frailty and level of physical activity will be evaluated and followed for pre-admission condition and 30, 90 and 180 days after hospital discharge .
- Conditions
- SARS-CoV-2 Acute Respiratory Disease
- Being tested
- Muscle ultrasound evaluation
- Keywords
- Coronavirus, SARS-CoV-2, COVID-19, Intensive Care Units, Ultrasonography
- Medical subject headings
- Coronavirus Infections, COVID-19
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Muscle ultrasound evaluationDiagnostic test
Muscle ultrasound evaluation will be performed in patients admitted with COVID-19 requiring invasive mechanical ventilation. The measurements of thickness and thickening fraction will occur for diaphragm, abdominal - rectus abdominis, internal oblique, external oblique and transverse abdomen - and parasternal intercostal muscles. Serial measurements of the thickness and echogenicity of the quadriceps femoris muscle will also be performed.
| Study group | Role | What they receive |
|---|---|---|
| Ultrasound assessment | Muscle ultrasound evaluation Receives: Diagnostic Test: Muscle ultrasound evaluation |
What is being measured
The primary outcome is the main question the study is designed to answer.
Muscle thickness
Change in the thickness of the diaphragm and quadriceps femoris muscles.
Measured: Day 1, 5, and within 24 hours after ICU discharge.
Secondary outcomes (4)
Respiratory muscle thickness
Change in the thickness of the intercostal and abdominal wall muscles.
Measured: At the end of data collection, within 24 hours after ICU discharge.
Muscle thickness and functional outcomes
Verify the correlation between quadriceps femoris muscle thickness change and echogenicity with functional outcomes (Barthe Index, International Physical Activities Questionnaire, and the Clinical Frailty Score).
Measured: At the end of data collection, within 24 hours after ICU discharge.
Grip strength and clinical outcomes
Verify the correlation between grip strength (measured by the Dynamometer Grip Strength) and clinical outcomes (Barthe Index, International Physical Activities Questionnaire, and the Clinical Frailty Score).
Measured: At the end of data collection, within 24 hours after ICU discharge.
Mobility level correlation with clinical and functional outcomes
Verify the correlation between mobility level (measured by the Perme Intensive Care Unit Mobility Score) with clinical and functional outcomes (Barthe Index, International Physical Activities Questionnaire, and the Clinical Frailty Score).
Measured: At the end of data collection, within 24 hours after ICU discharge.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Oct 2021
- Study start30 Sep 2021
- Primary completionSep 2022 (estimated)
- Study completionSep 2022 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (20)Papers the sponsor has linked to this study.
- Other trials for SARS-CoV-2 Acute Respiratory DiseaseStudies 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
- 138 participants (estimated)
- Target duration
- 6 Months
Sponsor and investigators
- Lead sponsor
- Hospital Israelita Albert Einstein
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Caroline G Mól, PT, Study chair, Hospital Israelita Albert Einstein
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05063214
- Sponsor's protocol ID
- 49075421.0.0000.0071
- Other IDs
- 4.923.576
- Status last verified
- Oct 2021
- First submitted
- 4 Sep 2021
- Last updated
- 6 Oct 2021
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: Individual participant data (IPD) collected during the study that underlie results reported will be shared after de-identification (text, tables, figures, and appendices).
Publications
Vanhorebeek I, Latronico N, Van den Berghe G. ICU-acquired weakness. Intensive Care Med. 2020 Apr;46(4):637-653. doi: 10.1007/s00134-020-05944-4. Epub 2020 Feb 19.
PubMed 32076765Conway H, Lau G, Zochios V. Personalizing Invasive Mechanical Ventilation Strategies in Coronavirus Disease 2019 (COVID-19)-Associated Lung Injury: The Utility of Lung Ultrasound. J Cardiothorac Vasc Anesth. 2020 Oct;34(10):2571-2574. doi: 10.1053/j.jvca.2020.04.062. Epub 2020 May 15. No abstract available.
PubMed 32425463Patel Z, Franz CK, Bharat A, Walter JM, Wolfe LF, Koralnik IJ, Deshmukh S. Diaphragm and Phrenic Nerve Ultrasound in COVID-19 Patients and Beyond: Imaging Technique, Findings, and Clinical Applications. J Ultrasound Med. 2022 Feb;41(2):285-299. doi: 10.1002/jum.15706. Epub 2021 Mar 27.
PubMed 33772850Shi Z, de Vries HJ, Vlaar APJ, van der Hoeven J, Boon RA, Heunks LMA, Ottenheijm CAC; Dutch COVID-19 Diaphragm Investigators. Diaphragm Pathology in Critically Ill Patients With COVID-19 and Postmortem Findings From 3 Medical Centers. JAMA Intern Med. 2021 Jan 1;181(1):122-124. doi: 10.1001/jamainternmed.2020.6278.
PubMed 33196760Vivier E, Mekontso Dessap A, Dimassi S, Vargas F, Lyazidi A, Thille AW, Brochard L. Diaphragm ultrasonography to estimate the work of breathing during non-invasive ventilation. Intensive Care Med. 2012 May;38(5):796-803. doi: 10.1007/s00134-012-2547-7. Epub 2012 Apr 5.
PubMed 22476448Goligher EC, Fan E, Herridge MS, Murray A, Vorona S, Brace D, Rittayamai N, Lanys A, Tomlinson G, Singh JM, Bolz SS, Rubenfeld GD, Kavanagh BP, Brochard LJ, Ferguson ND. Evolution of Diaphragm Thickness during Mechanical Ventilation. Impact of Inspiratory Effort. Am J Respir Crit Care Med. 2015 Nov 1;192(9):1080-8. doi: 10.1164/rccm.201503-0620OC.
PubMed 26167730Puthucheary ZA, Rawal J, McPhail M, Connolly B, Ratnayake G, Chan P, Hopkinson NS, Phadke R, Dew T, Sidhu PS, Velloso C, Seymour J, Agley CC, Selby A, Limb M, Edwards LM, Smith K, Rowlerson A, Rennie MJ, Moxham J, Harridge SD, Hart N, Montgomery HE. Acute skeletal muscle wasting in critical illness. JAMA. 2013 Oct 16;310(15):1591-600. doi: 10.1001/jama.2013.278481.
PubMed 24108501Sklar MC, Dres M, Fan E, Rubenfeld GD, Scales DC, Herridge MS, Rittayamai N, Harhay MO, Reid WD, Tomlinson G, Rozenberg D, McClelland W, Riegler S, Slutsky AS, Brochard L, Ferguson ND, Goligher EC. Association of Low Baseline Diaphragm Muscle Mass With Prolonged Mechanical Ventilation and Mortality Among Critically Ill Adults. JAMA Netw Open. 2020 Feb 5;3(2):e1921520. doi: 10.1001/jamanetworkopen.2019.21520.
PubMed 32074293Itagaki T, Nakanishi N, Takashima T, Ueno Y, Tane N, Tsunano Y, Nunomura T, Oto J. Effect of controlled ventilation during assist-control ventilation on diaphragm thickness : a post hoc analysis of an observational study. J Med Invest. 2020;67(3.4):332-337. doi: 10.2152/jmi.67.332.
PubMed 33148911Goligher EC, Dres M, Fan E, Rubenfeld GD, Scales DC, Herridge MS, Vorona S, Sklar MC, Rittayamai N, Lanys A, Murray A, Brace D, Urrea C, Reid WD, Tomlinson G, Slutsky AS, Kavanagh BP, Brochard LJ, Ferguson ND. Mechanical Ventilation-induced Diaphragm Atrophy Strongly Impacts Clinical Outcomes. Am J Respir Crit Care Med. 2018 Jan 15;197(2):204-213. doi: 10.1164/rccm.201703-0536OC.
PubMed 28930478Goligher EC, Laghi F, Detsky ME, Farias P, Murray A, Brace D, Brochard LJ, Bolz SS, Rubenfeld GD, Kavanagh BP, Ferguson ND. Measuring diaphragm thickness with ultrasound in mechanically ventilated patients: feasibility, reproducibility and validity. Intensive Care Med. 2015 Apr;41(4):642-9. doi: 10.1007/s00134-015-3687-3. Epub 2015 Feb 19.
PubMed 25693448Vivier E, Roussey A, Doroszewski F, Rosselli S, Pommier C, Carteaux G, Mekontso Dessap A. Atrophy of Diaphragm and Pectoral Muscles in Critically Ill Patients. Anesthesiology. 2019 Sep;131(3):569-579. doi: 10.1097/ALN.0000000000002737.
PubMed 31094757Parry SM, El-Ansary D, Cartwright MS, Sarwal A, Berney S, Koopman R, Annoni R, Puthucheary Z, Gordon IR, Morris PE, Denehy L. Ultrasonography in the intensive care setting can be used to detect changes in the quality and quantity of muscle and is related to muscle strength and function. J Crit Care. 2015 Oct;30(5):1151.e9-14. doi: 10.1016/j.jcrc.2015.05.024. Epub 2015 Jun 3.
PubMed 26211979Nakanishi N, Oto J, Ueno Y, Nakataki E, Itagaki T, Nishimura M. Change in diaphragm and intercostal muscle thickness in mechanically ventilated patients: a prospective observational ultrasonography study. J Intensive Care. 2019 Dec 2;7:56. doi: 10.1186/s40560-019-0410-4. eCollection 2019.
PubMed 31827804Zambon M, Beccaria P, Matsuno J, Gemma M, Frati E, Colombo S, Cabrini L, Landoni G, Zangrillo A. Mechanical Ventilation and Diaphragmatic Atrophy in Critically Ill Patients: An Ultrasound Study. Crit Care Med. 2016 Jul;44(7):1347-52. doi: 10.1097/CCM.0000000000001657.
PubMed 26992064
Study at a glance
From the registry record, last updated by the sponsor on 6 Oct 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Muscle Evaluation of Patients Infected by the Coronavirus Requiring Mechanical Ventilation
- ClinicalTrials.gov ID
- NCT05063214
- Acronym / sponsor ID
- 49075421.0.0000.0071
- Conditions
- SARS-CoV-2 Acute Respiratory Disease
- Keywords
- Coronavirus, SARS-CoV-2, COVID-19, Intensive Care Units, Ultrasonography
- Study type
- Observational
- Recruitment status
- Unknown status
- Enrolment
- 138 participants (estimated)
- Lead sponsor
- Hospital Israelita Albert EinsteinUniversity, hospital or other
- Study start
- 30 Sep 2021 (actual)
- Primary completion
- Sep 2022 (estimated)
- Study completion
- Sep 2022 (estimated)
- First posted
- 1 Oct 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.
Patients with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) presents risk to develop muscle weakness associated with prolonged period of mechanical ventilation support and hospital stay.
Detailed description
Intensive care unit (ICU) acquired muscle weakness affects both respiratory and peripheral muscles and can contribute to worsen clinical and functional outcomes. In this way, ultrasonography muscle evaluation could help to identify early alterations guiding the therapeutic planning and allowing to monitor the interventions performed. Therefore, the investigators intend to follow up mechanically ventilated patients with confirmed diagnosis of COVID-19 during ICU stay to quantify the diaphragm, parasternal intercostal, abdominals and femoral quadriceps muscles thickness assessed by ultrasonography. Additionally, functional capacity, frailty and level of physical activity will be evaluated and followed for pre-admission condition and 30, 90 and 180 days after hospital discharge .
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Target follow-up
- 6 Months
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Ultrasound assessment | – | Diagnostic Test: Muscle ultrasound evaluationMuscle ultrasound evaluation |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- SARS-CoV-2 patients admitted to the intensive care unit requiring invasive mechanical ventilation.
Key inclusion criteria (3 listed)
- patients admitted to ICU
- having a confirmed diagnosis of COVID-19
- requiring invasive mechanical ventilation.
Key exclusion criteria (6 listed)
- exclusive palliative care;
- neuromuscular diseases;
- patients who evolve with the need for lower limb amputation;
- previous known diaphragm malformations and dysfunctions;
- patients transferred from other institutions under invasive mechanical ventilation;
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 |
|---|---|---|
| Muscle ultrasound evaluationMuscle ultrasound evaluation will be performed in patients admitted with COVID-19 requiring invasive mechanical ventilation. The measurements of thickness and thickening fraction will occur for diaphragm, abdominal - rectus abdominis, internal oblique, external oblique and transverse abdomen - and parasternal intercostal muscles. Serial measurements of the thickness and echogenicity of the quadriceps femoris muscle will also be performed. | Diagnostic test | Ultrasound assessment |
Primary outcome
Muscle thickness
Time frame: Day 1, 5, and within 24 hours after ICU discharge.
Change in the thickness of the diaphragm and quadriceps femoris muscles.
4 secondary outcomes
Respiratory muscle thickness
Time frame: At the end of data collection, within 24 hours after ICU discharge.
Muscle thickness and functional outcomes
Time frame: At the end of data collection, within 24 hours after ICU discharge.
Grip strength and clinical outcomes
Time frame: At the end of data collection, within 24 hours after ICU discharge.
Mobility level correlation with clinical and functional outcomes
Time frame: At the end of data collection, within 24 hours after ICU discharge.
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 6 Oct 2021.
- Background: PubMed 32076765Vanhorebeek I, Latronico N, Van den Berghe G. ICU-acquired weakness. Intensive Care Med. 2020 Apr;46(4):637-653. doi: 10.1007/s00134-020-05944-4. Epub 2020 Feb 19.
- Background: PubMed 32425463Conway H, Lau G, Zochios V. Personalizing Invasive Mechanical Ventilation Strategies in Coronavirus Disease 2019 (COVID-19)-Associated Lung Injury: The Utility of Lung Ultrasound. J Cardiothorac Vasc Anesth. 2020 Oct;34(10):2571-2574. doi: 10.1053/j.jvca.2020.04.062. Epub 2020 May 15. No abstract available.
- Background: PubMed 33772850Patel Z, Franz CK, Bharat A, Walter JM, Wolfe LF, Koralnik IJ, Deshmukh S. Diaphragm and Phrenic Nerve Ultrasound in COVID-19 Patients and Beyond: Imaging Technique, Findings, and Clinical Applications. J Ultrasound Med. 2022 Feb;41(2):285-299. doi: 10.1002/jum.15706. Epub 2021 Mar 27.
- Background: PubMed 33196760Shi Z, de Vries HJ, Vlaar APJ, van der Hoeven J, Boon RA, Heunks LMA, Ottenheijm CAC; Dutch COVID-19 Diaphragm Investigators. Diaphragm Pathology in Critically Ill Patients With COVID-19 and Postmortem Findings From 3 Medical Centers. JAMA Intern Med. 2021 Jan 1;181(1):122-124. doi: 10.1001/jamainternmed.2020.6278.
- Background: PubMed 22476448Vivier E, Mekontso Dessap A, Dimassi S, Vargas F, Lyazidi A, Thille AW, Brochard L. Diaphragm ultrasonography to estimate the work of breathing during non-invasive ventilation. Intensive Care Med. 2012 May;38(5):796-803. doi: 10.1007/s00134-012-2547-7. Epub 2012 Apr 5.
- Background: PubMed 26167730Goligher EC, Fan E, Herridge MS, Murray A, Vorona S, Brace D, Rittayamai N, Lanys A, Tomlinson G, Singh JM, Bolz SS, Rubenfeld GD, Kavanagh BP, Brochard LJ, Ferguson ND. Evolution of Diaphragm Thickness during Mechanical Ventilation. Impact of Inspiratory Effort. Am J Respir Crit Care Med. 2015 Nov 1;192(9):1080-8. doi: 10.1164/rccm.201503-0620OC.
- Background: PubMed 24108501Puthucheary ZA, Rawal J, McPhail M, Connolly B, Ratnayake G, Chan P, Hopkinson NS, Phadke R, Dew T, Sidhu PS, Velloso C, Seymour J, Agley CC, Selby A, Limb M, Edwards LM, Smith K, Rowlerson A, Rennie MJ, Moxham J, Harridge SD, Hart N, Montgomery HE. Acute skeletal muscle wasting in critical illness. JAMA. 2013 Oct 16;310(15):1591-600. doi: 10.1001/jama.2013.278481.
- Background: PubMed 32074293Sklar MC, Dres M, Fan E, Rubenfeld GD, Scales DC, Herridge MS, Rittayamai N, Harhay MO, Reid WD, Tomlinson G, Rozenberg D, McClelland W, Riegler S, Slutsky AS, Brochard L, Ferguson ND, Goligher EC. Association of Low Baseline Diaphragm Muscle Mass With Prolonged Mechanical Ventilation and Mortality Among Critically Ill Adults. JAMA Netw Open. 2020 Feb 5;3(2):e1921520. doi: 10.1001/jamanetworkopen.2019.21520.
- Background: PubMed 33148911Itagaki T, Nakanishi N, Takashima T, Ueno Y, Tane N, Tsunano Y, Nunomura T, Oto J. Effect of controlled ventilation during assist-control ventilation on diaphragm thickness : a post hoc analysis of an observational study. J Med Invest. 2020;67(3.4):332-337. doi: 10.2152/jmi.67.332.
- Background: PubMed 28930478Goligher EC, Dres M, Fan E, Rubenfeld GD, Scales DC, Herridge MS, Vorona S, Sklar MC, Rittayamai N, Lanys A, Murray A, Brace D, Urrea C, Reid WD, Tomlinson G, Slutsky AS, Kavanagh BP, Brochard LJ, Ferguson ND. Mechanical Ventilation-induced Diaphragm Atrophy Strongly Impacts Clinical Outcomes. Am J Respir Crit Care Med. 2018 Jan 15;197(2):204-213. doi: 10.1164/rccm.201703-0536OC.
- Background: PubMed 25693448Goligher EC, Laghi F, Detsky ME, Farias P, Murray A, Brace D, Brochard LJ, Bolz SS, Rubenfeld GD, Kavanagh BP, Ferguson ND. Measuring diaphragm thickness with ultrasound in mechanically ventilated patients: feasibility, reproducibility and validity. Intensive Care Med. 2015 Apr;41(4):642-9. doi: 10.1007/s00134-015-3687-3. Epub 2015 Feb 19.
- Background: PubMed 31094757Vivier E, Roussey A, Doroszewski F, Rosselli S, Pommier C, Carteaux G, Mekontso Dessap A. Atrophy of Diaphragm and Pectoral Muscles in Critically Ill Patients. Anesthesiology. 2019 Sep;131(3):569-579. doi: 10.1097/ALN.0000000000002737.
- Individual participant dataSharing planned: Yes. Individual participant data (IPD) collected during the study that underlie results reported will be shared after de-identification (text, tables, figures, and appendices).
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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.
Caroline G Mól, PT study chair
Hospital Israelita Albert Einstein
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 SARS-CoV-2 Acute Respiratory Disease, run by Hospital Israelita Albert Einstein at 1 site in Brazil.
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 3 inclusion and 6 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: status not confirmed, as of the sponsor's last update on 6 Oct 2021. 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 Brazil. 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?
Results are not available in the source record.
How can a doctor refer a patient or contact the research team?
Contact Ricardo K Nawa, PT MSc PhD (+55 11 2151-0603, ricardo.nawa@einstein.br), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Muscle thickness (time frame: Day 1, 5, and within 24 hours after ICU discharge.). 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 NCT05063214, which also lists 20 linked publications.
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 6 Oct 2021.