Heart FailurePH-HFNCT01545180
Observatory: Search for Prognostic Factors of Pulmonary Hypertension Post-capillary in Heart Failure
An observational study of Heart Failure and Post-capillary Pulmonary Hypertension, run by French Cardiology Society at 1 site in France.
Trial summary
This study will better understand the post-capillary pulmonary hypertension in heart failure, to determine its prognostic role and to consider specific treatment of different forms of pulmonary hypertension in post-capillary pulmonary heart failure. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Heart Failure, Post-capillary Pulmonary Hypertension
- How many people
- 665 participants
- Where
- 1 siteFrance
- Study dates
- Feb 2012to 31 Dec 2020
- 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: Inclusion of consecutive patients recruted from cardiology departments for all participating centres. Participation in the study is offered to all French institutions (academic hospitals, general hospitals, army hospitals and private clinics) with cardiology units. A physician is responsible for study recruitment at each centre.
Who may be able to join
- Patient with heart failure (LVEF preserved or altered or valvular heart disease) defined by a history of heart failure or LVEF less than or equal to 50%.
- Patient with a right heart catheterization for medical reasons
- Medical treatment considered optimal: beta blockers, ACE inhibitors or angiotensin II receptor antagonists and/or aldosterone
- Stable Patient: No significant cardiac decompensation or change the dose of diuretics for 28 days.
- The patient has agreed and have signed consent.
Who cannot join
- Patient is younger than 18 years.
- Patient with unstable heart failure (cardiogenic shock, acute cardiac decompensation).
- Coronary heart disease for which there is a maximum revascularization
- Organic valvular which is scheduled for surgical correction of valvular abnormality (plasty or replacement).
- Patient dialysis.
- PAH original pre-capillary catheterization, defined by a Pcap ≤ 15 mmHg.
Show all 11Show fewer
- Patient with triple installation of PM within 90 days.
- Patients who underwent revascularization within 90 days.
- Patients who underwent mechanical ventricular assistance.
- Patient with severe lung infection (CPT < 60% of predicted, FEV < 60% predicted) or pulmonary embolism or respiratory failure with a paO2 in ambient air below 60mmHg or oxygen therapy.
- Patient with severe heart rhythm.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Observatory: Search for Prognostic Factors of Pulmonary Hypertension Post-capillary in Heart Failure.
This study will better understand the post-capillary pulmonary hypertension in heart failure, to determine its prognostic role and to consider specific treatment of different forms of pulmonary hypertension in post-capillary pulmonary heart failure.
Read the detailed description
Patients with heart failure (HF) frequently have a post-capillary pulmonary hypertension (HTPcap) which has two forms: passive and reactive.
The prognosis, prevalence and pathophysiological mechanisms of cell and tissue involved in the onset and reversibility of these two forms of HTPcap remain poorly understood.
The latest recommendations of the European Society of Cardiology and the European Respiratory Society identify two forms of HTPcap in the IC as a function of the extent of trans-pulmonary gradient (GTP) measured during right heart catheterization (GTP = mPAP-Pcap): passive (GTP £ 12mmHg) and reactive (GTP> 12mmHg).
In the latter form, the increase in pulmonary pressure would be disproportionate to the increase in left ventricular pressures.
This study will permit to identify hemodynamic prognostic markers of the the IC, and clinical, biological and hemodynamic determinants of the HTPcap in the IC.
This will help to identify a population that could benefit from specific treatment to referred pulmonary artery.
- Keywords
- Observatory, Heart failure, Post-capillary pulmonary hypertension, HTPcap
- Medical subject headings
- Heart Failure
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
| Study group | Role | What they receive |
|---|---|---|
| HTPcap in IC | HTPcap active and passive in a population of stable patients with heart failure (left ventricular ejection fraction impaired or preserved) and / or valvular disease who received a left right heart catheterization as part of their care. |
What is being measured
The primary outcome is the main question the study is designed to answer.
Prognostic
Estimate the prognosis of different forms of HTPcap in heart failure (ejection fraction altered, stored or valvular heart disease)
Measured: 2 years
Secondary outcomes (2)
Prevalence
Define the prevalence of different forms of active or passive HTPcap
Measured: 3 years
Phenotype
Define the phenotypic characteristics of patients with reactive or passive HTPcap in heart failure
Measured: 3 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted6 Mar 2012 (estimated)
- Study startFeb 2012
- Primary completionDec 2018
- Study completion31 Dec 2020
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (17)Papers the sponsor has linked to this study.
- Other trials for Heart FailureStudies 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
- 665 participants (actual)
Sponsor and investigators
- Lead sponsor
- French Cardiology Society
- Sponsor type
- University, hospital or other
- Collaborators
- CHRU Lille, Dr Nicolas LAMBLIN
- Responsible party
- Principal investigator, Thibaud Damy, French Cardiology Society
- Investigators
- Thibaud DAMY, Principal investigator, Assistance Publique - Hôpitaux de Paris
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01545180
- Sponsor's protocol ID
- 11415
- Acronym
- PH-HF
- Status last verified
- Sep 2022
- First submitted
- 29 Feb 2012
- Last updated
- 21 Sep 2022
- Results posted
- No
- Data monitoring committee
- No
Publications
Cleland JG, Swedberg K, Follath F, Komajda M, Cohen-Solal A, Aguilar JC, Dietz R, Gavazzi A, Hobbs R, Korewicki J, Madeira HC, Moiseyev VS, Preda I, van Gilst WH, Widimsky J, Freemantle N, Eastaugh J, Mason J; Study Group on Diagnosis of the Working Group on Heart Failure of the European Society of Cardiology. The EuroHeart Failure survey programme-- a survey on the quality of care among patients with heart failure in Europe. Part 1: patient characteristics and diagnosis. Eur Heart J. 2003 Mar;24(5):442-63. doi: 10.1016/s0195-668x(02)00823-0.
PubMed 12633546Lainscak M, Cleland JG, Lenzen MJ, Follath F, Komajda M, Swedberg K. International variations in the treatment and co-morbidity of left ventricular systolic dysfunction: data from the EuroHeart Failure Survey. Eur J Heart Fail. 2007 Mar;9(3):292-9. doi: 10.1016/j.ejheart.2006.07.007. Epub 2006 Oct 4.
PubMed 17023204Metra M, Ponikowski P, Dickstein K, McMurray JJ, Gavazzi A, Bergh CH, Fraser AG, Jaarsma T, Pitsis A, Mohacsi P, Bohm M, Anker S, Dargie H, Brutsaert D, Komajda M; Heart Failure Association of the European Society of Cardiology. Advanced chronic heart failure: A position statement from the Study Group on Advanced Heart Failure of the Heart Failure Association of the European Society of Cardiology. Eur J Heart Fail. 2007 Jun-Jul;9(6-7):684-94. doi: 10.1016/j.ejheart.2007.04.003. Epub 2007 May 3.
PubMed 17481947Ghio S, Gavazzi A, Campana C, Inserra C, Klersy C, Sebastiani R, Arbustini E, Recusani F, Tavazzi L. Independent and additive prognostic value of right ventricular systolic function and pulmonary artery pressure in patients with chronic heart failure. J Am Coll Cardiol. 2001 Jan;37(1):183-8. doi: 10.1016/s0735-1097(00)01102-5.
PubMed 11153735Kjaergaard J, Akkan D, Iversen KK, Kjoller E, Kober L, Torp-Pedersen C, Hassager C. Prognostic importance of pulmonary hypertension in patients with heart failure. Am J Cardiol. 2007 Apr 15;99(8):1146-50. doi: 10.1016/j.amjcard.2006.11.052. Epub 2007 Mar 8.
PubMed 17437745Damy T, Viallet C, Lairez O, Deswarte G, Paulino A, Maison P, Vermes E, Gueret P, Adnot S, Dubois-Rande JL, Hittinger L. Comparison of four right ventricular systolic echocardiographic parameters to predict adverse outcomes in chronic heart failure. Eur J Heart Fail. 2009 Sep;11(9):818-24. doi: 10.1093/eurjhf/hfp111.
PubMed 19696055Damy T, Goode KM, Kallvikbacka-Bennett A, Lewinter C, Hobkirk J, Nikitin NP, Dubois-Rande JL, Hittinger L, Clark AL, Cleland JG. Determinants and prognostic value of pulmonary arterial pressure in patients with chronic heart failure. Eur Heart J. 2010 Sep;31(18):2280-90. doi: 10.1093/eurheartj/ehq245. Epub 2010 Aug 5.
PubMed 20693169Galie N, Hoeper MM, Humbert M, Torbicki A, Vachiery JL, Barbera JA, Beghetti M, Corris P, Gaine S, Gibbs JS, Gomez-Sanchez MA, Jondeau G, Klepetko W, Opitz C, Peacock A, Rubin L, Zellweger M, Simonneau G; ESC Committee for Practice Guidelines (CPG). Guidelines for the diagnosis and treatment of pulmonary hypertension: the Task Force for the Diagnosis and Treatment of Pulmonary Hypertension of the European Society of Cardiology (ESC) and the European Respiratory Society (ERS), endorsed by the International Society of Heart and Lung Transplantation (ISHLT). Eur Heart J. 2009 Oct;30(20):2493-537. doi: 10.1093/eurheartj/ehp297. Epub 2009 Aug 27. No abstract available.
PubMed 19713419Task Force for Diagnosis and Treatment of Pulmonary Hypertension of European Society of Cardiology (ESC); European Respiratory Society (ERS); International Society of Heart and Lung Transplantation (ISHLT); Galie N, Hoeper MM, Humbert M, Torbicki A, Vachiery JL, Barbera JA, Beghetti M, Corris P, Gaine S, Gibbs JS, Gomez-Sanchez MA, Jondeau G, Klepetko W, Opitz C, Peacock A, Rubin L, Zellweger M, Simonneau G. Guidelines for the diagnosis and treatment of pulmonary hypertension. Eur Respir J. 2009 Dec;34(6):1219-63. doi: 10.1183/09031936.00139009. Epub 2009 Sep 12. No abstract available.
PubMed 19749199Moraes DL, Colucci WS, Givertz MM. Secondary pulmonary hypertension in chronic heart failure: the role of the endothelium in pathophysiology and management. Circulation. 2000 Oct 3;102(14):1718-23. doi: 10.1161/01.cir.102.14.1718.
PubMed 11015353Gehlbach BK, Geppert E. The pulmonary manifestations of left heart failure. Chest. 2004 Feb;125(2):669-82. doi: 10.1378/chest.125.2.669.
PubMed 14769751Wharton J, Strange JW, Moller GM, Growcott EJ, Ren X, Franklyn AP, Phillips SC, Wilkins MR. Antiproliferative effects of phosphodiesterase type 5 inhibition in human pulmonary artery cells. Am J Respir Crit Care Med. 2005 Jul 1;172(1):105-13. doi: 10.1164/rccm.200411-1587OC. Epub 2005 Apr 7.
PubMed 15817798Nagendran J, Archer SL, Soliman D, Gurtu V, Moudgil R, Haromy A, St Aubin C, Webster L, Rebeyka IM, Ross DB, Light PE, Dyck JR, Michelakis ED. Phosphodiesterase type 5 is highly expressed in the hypertrophied human right ventricle, and acute inhibition of phosphodiesterase type 5 improves contractility. Circulation. 2007 Jul 17;116(3):238-48. doi: 10.1161/CIRCULATIONAHA.106.655266. Epub 2007 Jul 2.
PubMed 17606845Galie N, Ghofrani HA, Torbicki A, Barst RJ, Rubin LJ, Badesch D, Fleming T, Parpia T, Burgess G, Branzi A, Grimminger F, Kurzyna M, Simonneau G; Sildenafil Use in Pulmonary Arterial Hypertension (SUPER) Study Group. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med. 2005 Nov 17;353(20):2148-57. doi: 10.1056/NEJMoa050010.
PubMed 16291984Lewis GD, Shah R, Shahzad K, Camuso JM, Pappagianopoulos PP, Hung J, Tawakol A, Gerszten RE, Systrom DM, Bloch KD, Semigran MJ. Sildenafil improves exercise capacity and quality of life in patients with systolic heart failure and secondary pulmonary hypertension. Circulation. 2007 Oct 2;116(14):1555-62. doi: 10.1161/CIRCULATIONAHA.107.716373. Epub 2007 Sep 4.
PubMed 17785618
Study at a glance
From the registry record, last updated by the sponsor on 21 Sep 2022. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Observatory: Search for Prognostic Factors of Pulmonary Hypertension Post-capillary in Heart Failure.
- ClinicalTrials.gov ID
- NCT01545180
- Acronym / sponsor ID
- PH-HF / 11415
- Keywords
- Observatory, Heart failure, Post-capillary pulmonary hypertension, HTPcap
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 665 participants (actual)
- Lead sponsor
- French Cardiology SocietyUniversity, hospital or other
- Collaborators
- CHRU Lille, Dr Nicolas LAMBLIN
- Study start
- Feb 2012 (actual)
- Primary completion
- Dec 2018 (actual)
- Study completion
- 31 Dec 2020 (actual)
- First posted
- 6 Mar 2012 (estimated)
- 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.
This study will better understand the post-capillary pulmonary hypertension in heart failure, to determine its prognostic role and to consider specific treatment of different forms of pulmonary hypertension in post-capillary pulmonary heart failure.
Detailed description
Patients with heart failure (HF) frequently have a post-capillary pulmonary hypertension (HTPcap) which has two forms: passive and reactive.
The prognosis, prevalence and pathophysiological mechanisms of cell and tissue involved in the onset and reversibility of these two forms of HTPcap remain poorly understood.
The latest recommendations of the European Society of Cardiology and the European Respiratory Society identify two forms of HTPcap in the IC as a function of the extent of trans-pulmonary gradient (GTP) measured during right heart catheterization (GTP = mPAP-Pcap): passive (GTP £ 12mmHg) and reactive (GTP> 12mmHg).
In the latter form, the increase in pulmonary pressure would be disproportionate to the increase in left ventricular pressures.
This study will permit to identify hemodynamic prognostic markers of the the IC, and clinical, biological and hemodynamic determinants of the HTPcap in the IC.
This will help to identify a population that could benefit from specific treatment to referred pulmonary artery.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| HTPcap in IC | – | –HTPcap active and passive in a population of stable patients with heart failure (left ventricular ejection fraction impaired or preserved) and / or valvular disease who received a left right heart catheterization as part of their care. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- Inclusion of consecutive patients recruted from cardiology departments for all participating centres. Participation in the study is offered to all French institutions (academic hospitals, general hospitals, army hospitals and private clinics) with cardiology units. A physician is responsible for study recruitment at each centre.
Key inclusion criteria (5 listed)
- Patient with heart failure (LVEF preserved or altered or valvular heart disease) defined by a history of heart failure or LVEF less than or equal to 50%.
- Patient with a right heart catheterization for medical reasons
- Medical treatment considered optimal: beta blockers, ACE inhibitors or angiotensin II receptor antagonists and/or aldosterone
- Stable Patient: No significant cardiac decompensation or change the dose of diuretics for 28 days.
- The patient has agreed and have signed consent.
Key exclusion criteria (11 listed)
- Patient is younger than 18 years.
- Patient with unstable heart failure (cardiogenic shock, acute cardiac decompensation).
- Coronary heart disease for which there is a maximum revascularization
- Organic valvular which is scheduled for surgical correction of valvular abnormality (plasty or replacement).
- Patient dialysis.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Primary outcome
Prognostic
Time frame: 2 years
Estimate the prognosis of different forms of HTPcap in heart failure (ejection fraction altered, stored or valvular heart disease)
2 secondary outcomes
Prevalence
Time frame: 3 years
Phenotype
Time frame: 3 years
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 21 Sep 2022.
- Background: PubMed 12633546Cleland JG, Swedberg K, Follath F, Komajda M, Cohen-Solal A, Aguilar JC, Dietz R, Gavazzi A, Hobbs R, Korewicki J, Madeira HC, Moiseyev VS, Preda I, van Gilst WH, Widimsky J, Freemantle N, Eastaugh J, Mason J; Study Group on Diagnosis of the Working Group on Heart Failure of the European Society of Cardiology. The EuroHeart Failure survey programme-- a survey on the quality of care among patients with heart failure in Europe. Part 1: patient characteristics and diagnosis. Eur Heart J. 2003 Mar;24(5):442-63. doi: 10.1016/s0195-668x(02)00823-0.
- Background: PubMed 17023204Lainscak M, Cleland JG, Lenzen MJ, Follath F, Komajda M, Swedberg K. International variations in the treatment and co-morbidity of left ventricular systolic dysfunction: data from the EuroHeart Failure Survey. Eur J Heart Fail. 2007 Mar;9(3):292-9. doi: 10.1016/j.ejheart.2006.07.007. Epub 2006 Oct 4.
- Background: PubMed 17481947Metra M, Ponikowski P, Dickstein K, McMurray JJ, Gavazzi A, Bergh CH, Fraser AG, Jaarsma T, Pitsis A, Mohacsi P, Bohm M, Anker S, Dargie H, Brutsaert D, Komajda M; Heart Failure Association of the European Society of Cardiology. Advanced chronic heart failure: A position statement from the Study Group on Advanced Heart Failure of the Heart Failure Association of the European Society of Cardiology. Eur J Heart Fail. 2007 Jun-Jul;9(6-7):684-94. doi: 10.1016/j.ejheart.2007.04.003. Epub 2007 May 3.
- Background: PubMed 11153735Ghio S, Gavazzi A, Campana C, Inserra C, Klersy C, Sebastiani R, Arbustini E, Recusani F, Tavazzi L. Independent and additive prognostic value of right ventricular systolic function and pulmonary artery pressure in patients with chronic heart failure. J Am Coll Cardiol. 2001 Jan;37(1):183-8. doi: 10.1016/s0735-1097(00)01102-5.
- Background: PubMed 17437745Kjaergaard J, Akkan D, Iversen KK, Kjoller E, Kober L, Torp-Pedersen C, Hassager C. Prognostic importance of pulmonary hypertension in patients with heart failure. Am J Cardiol. 2007 Apr 15;99(8):1146-50. doi: 10.1016/j.amjcard.2006.11.052. Epub 2007 Mar 8.
- Background: PubMed 19696055Damy T, Viallet C, Lairez O, Deswarte G, Paulino A, Maison P, Vermes E, Gueret P, Adnot S, Dubois-Rande JL, Hittinger L. Comparison of four right ventricular systolic echocardiographic parameters to predict adverse outcomes in chronic heart failure. Eur J Heart Fail. 2009 Sep;11(9):818-24. doi: 10.1093/eurjhf/hfp111.
- Background: PubMed 20693169Damy T, Goode KM, Kallvikbacka-Bennett A, Lewinter C, Hobkirk J, Nikitin NP, Dubois-Rande JL, Hittinger L, Clark AL, Cleland JG. Determinants and prognostic value of pulmonary arterial pressure in patients with chronic heart failure. Eur Heart J. 2010 Sep;31(18):2280-90. doi: 10.1093/eurheartj/ehq245. Epub 2010 Aug 5.
- Background: PubMed 19713419Galie N, Hoeper MM, Humbert M, Torbicki A, Vachiery JL, Barbera JA, Beghetti M, Corris P, Gaine S, Gibbs JS, Gomez-Sanchez MA, Jondeau G, Klepetko W, Opitz C, Peacock A, Rubin L, Zellweger M, Simonneau G; ESC Committee for Practice Guidelines (CPG). Guidelines for the diagnosis and treatment of pulmonary hypertension: the Task Force for the Diagnosis and Treatment of Pulmonary Hypertension of the European Society of Cardiology (ESC) and the European Respiratory Society (ERS), endorsed by the International Society of Heart and Lung Transplantation (ISHLT). Eur Heart J. 2009 Oct;30(20):2493-537. doi: 10.1093/eurheartj/ehp297. Epub 2009 Aug 27. No abstract available.
- Background: PubMed 19749199Task Force for Diagnosis and Treatment of Pulmonary Hypertension of European Society of Cardiology (ESC); European Respiratory Society (ERS); International Society of Heart and Lung Transplantation (ISHLT); Galie N, Hoeper MM, Humbert M, Torbicki A, Vachiery JL, Barbera JA, Beghetti M, Corris P, Gaine S, Gibbs JS, Gomez-Sanchez MA, Jondeau G, Klepetko W, Opitz C, Peacock A, Rubin L, Zellweger M, Simonneau G. Guidelines for the diagnosis and treatment of pulmonary hypertension. Eur Respir J. 2009 Dec;34(6):1219-63. doi: 10.1183/09031936.00139009. Epub 2009 Sep 12. No abstract available.
- Background: PubMed 11015353Moraes DL, Colucci WS, Givertz MM. Secondary pulmonary hypertension in chronic heart failure: the role of the endothelium in pathophysiology and management. Circulation. 2000 Oct 3;102(14):1718-23. doi: 10.1161/01.cir.102.14.1718.
- Background: PubMed 14769751Gehlbach BK, Geppert E. The pulmonary manifestations of left heart failure. Chest. 2004 Feb;125(2):669-82. doi: 10.1378/chest.125.2.669.
- Background: PubMed 15817798Wharton J, Strange JW, Moller GM, Growcott EJ, Ren X, Franklyn AP, Phillips SC, Wilkins MR. Antiproliferative effects of phosphodiesterase type 5 inhibition in human pulmonary artery cells. Am J Respir Crit Care Med. 2005 Jul 1;172(1):105-13. doi: 10.1164/rccm.200411-1587OC. Epub 2005 Apr 7.
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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.
Thibaud DAMY principal investigator
Assistance Publique - Hôpitaux de Paris
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 Heart Failure and Post-capillary Pulmonary Hypertension, run by French Cardiology Society at 1 site in France.
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 5 inclusion and 11 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 21 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 France. 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?
Prognostic (time frame: 2 years). 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 NCT01545180, which also lists 17 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 21 Sep 2022.