AcromegalyCVAcroNCT00615004
Cardiovascular Outcome After Surgery or Somatostatin Analogues
An observational study of Acromegaly, run by Federico II University at 1 site in Italy.
Trial summary
A direct comparison between the results of surgery or somatostatin analogues (SSA) on cardiovascular complication in acromegaly has never been performed. Our objective is to investigate whether first-line surgery or SSA have a different outcome on cardiomyopathy after 12 months. Read more about this study
- Who is it for?
- Ages 18 to 85 years
- Conditions the study is for
- Acromegaly
- How many people
- 215 participants
- Where
- 1 siteItaly
- Study dates
- Jan 1997to Dec 2007
- 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 to 85 years
- All sexes
- No healthy volunteers
- Adult, Older adult
Study population: We will review all files from consecutive patients with active acromegaly coming to the Units of Endocrinology or Neurosurgery of the "Federico II" University of Naples from Jan 1st 1997 to December 31st 2006, primarily treated with either surgery or depot SSA, i.e. lanreotide (LAN) or slow-release octreotide (LAR), and with an available follow-up of at least 12 months. Due to the study design, this is a non ran-domized study. However, our routine procedure generally considers first-line treatment with SSA for 6-12 months, unless the tumors are clearly non invasive on Magnetic Resonance Imaging (MRI) and/or the patients who do not present any surgical or anesthesiological risk.
Who may be able to join
- Patients treated with first-line surgery via trans-sphenoidal route by microscopic and/or endoscopic approach or with first-line depot SSA treatment
- Achieving control of the disease; AND
- With available follow-up after 12 months of treatment
Who cannot join
- Patients receiving second surgery within 3 months from first surgery
- Requiring combined dopamine-agonists and SSA because of a mixed GH/PRL-secreting tumor
- Receiving the s.c. octreotide for longer than 15 days; OR
- Requiring surgery or SSA as second-line treatment before the completion of the 12 months or with a follow-up shorter than 6 months after surgery or pharmacotherapy
Trial locations and contacts
1 site in 1 country.
Italy1 site
Department of Molecular and Clinical Endocrinology and Oncology, University Federico II of Naples
Naples, Naples, 80131
About this study
Official title: An Observational, Retrospective, Comparative Study to Investigate Differential Outcome on Cardiomyopathy Following Control of Acromegaly After Surgery or Somatostatin Analogues Given as First-Line Therapy
A direct comparison between the results of surgery or somatostatin analogues (SSA) on cardiovascular complication in acromegaly has never been performed.
Our objective is to investigate whether first-line surgery or SSA have a different outcome on cardiomyopathy after 12 months. The design of the study is retrospective, comparative, non randomized, because of ethical problems.
Read more
Setting University Hospital. All patients treated with SSA [either octreotide-LAR (10-40 mg/q28d), or lanreotide (30-120 mg/q28d); dosages up-titrated to control GH and IGF-I levels] or operated on by transsphenoidal approach. For the purposes of this study only controlled patients will be included.
Measurements Primary outcome measures were changes in left ventricular mass index (LVMi), diastolic [early to atrial mitral flow velocity (E/A)] and systolic perform-ance [LV ejection fraction (LVEF)]. Secondary outcome measures were reduction of total/HDL-cholesterol ratio, as a cardiovascular (CV) risk parameter, improvement of glucose profile and pituitary function, as indirect causes of CV improvement.
Expected results: SSA and surgery groups should have similar results in terms of improvement of cardiomyopathy. However, recent data suggest that SSA reduce directly heart rate and cardiomyocytes performance: clinical implications of these evidences suggest that SSA will improve cardiovascular outcome more than surgery. Moreover, after surgery, replacement therapy already stabilised or of new onset, has never been considered so far in this setting.
Read the detailed description
We will review all files from consecutive patients with active acromegaly coming to the Units of Endocrinology or Neurosurgery of the "Federico II" University of Naples from Jan 1st 1997 to December 31st 2006, primarily treated with either surgery or depot SSA, i.e. lanreotide (LAN) or slow-release octreotide (LAR), and with an available follow-up of at least 12 months. Due to the study design, this is a non randomized study. However, our routine procedure generally considers first-line treatment with SSA for 6-12 months, unless the tumors are clearly non invasive on Magnetic Resonance Imaging (MRI) and/or the patients who do not present any surgical or anesthesiological risk.
Cure criteria are considered according with Giustina et al. Acromegaly is considered to be controlled if mean fasting GH levels were ≤2.5 μg/liter in presence of normal IGF-I levels for sex and age. Nadir GH after oral glucose load (oGTT) ≤1 μg/liter is also an option to evaluate disease control according with the 2000 Consensus Statement. However, oGTT is generally not routinely performed in patients receiving SSA, since GH-induced glucose suppression is likely to be mediated by the endogenous somatostatin tone. To avoid ascertainment bias, disease control after surgery and SSA will be only based on fasting GH and IGF-I levels. The diagnosis of acromegaly is defined as previously reported, by high serum GH levels during a 6 hr time course, not suppressible <1 µg/l after oGTT and high plasma IGF-I levels for age [expressed as value upper limit of normal range (ULN)].
For the purpose of this study only the patients with controlled acromegaly will be included to provide a period of follow-up long enough to investigate changes in cardiomyopathy parameters.
Study protocol: As for our routine procedure, at diagnosis all the patients undergo a complete metabolic and endocrine screening. After an overnight fasting, serum IGF-I levels are assayed twice in a single sample at the time 0 of the GH profile; GH levels are calculated as the mean value of at least 5 (up to 8) samples drawn every 30 min over a period of three-six hours and the average value will be considered for the statistical analysis; fasting total cholesterol, HDL cholesterol, glucose and insulin levels are also measured. The total/HDL-cholesterol ratio, index of cardiovascular risk, is calculated.
- Conditions
- Acromegaly
- Keywords
- Acromegaly, GH, IGF-I, Octreotide-LAR, Lanreotide, Transsphenoidal surgery
- Medical subject headings
- Acromegaly
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 |
|---|---|---|
| 1-SSA | All patients receiving first-line depot SSA treatment, with either octreotide-LAR or lanreotide, achieving control of the disease, and with available follow-up after 12 months of treatment. | |
| 2-Surgery | All patients treated with first-line surgery via trans-sphenoidal route by microscopic and/or endoscopic approach, who did not require any additional therapy for acromegaly and with available follow-up after 12 months of treatment |
What is being measured
The primary outcome is the main question the study is designed to answer.
Changes of left ventricular mass index (LVMi), as measure of LV hypertrophy, early to atrial mitral flow velocity (E/A), as measure of diastolic function, and left ventricular ejection fraction (LVEF), as measure of systolic function.
Measured: 12 months
Secondary outcomes (1)
Changes in the total/HDL cholesterol ratio, glucose tolerance, measured as fasting glucose levels and HOMA reduction, and improvement of pituitary function
Measured: 12 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted14 Feb 2008 (estimated)
- Study startJan 1997
- Primary completionDec 2007
- Study completionDec 2007
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (12)Papers the sponsor has linked to this study.
- Other trials for AcromegalyStudies of the same condition, open and under way.
- More trials run by Federico II UniversityThe 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
- Observational
- Observational model
- Cohort
- Time perspective
- Retrospective
- Enrolment
- 215 participants (actual)
Sponsor and investigators
- Lead sponsor
- Federico II University
- Sponsor type
- University, hospital or other
- Investigators
- Annamaria Colao, MD, Principal investigator, Federico II University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00615004
- Sponsor's protocol ID
- NeuroendoUnit-7
- Acronym
- CVAcro
- Status last verified
- Dec 2007
- First submitted
- 1 Feb 2008
- Last updated
- 14 Feb 2008
- Results posted
- No
- Data monitoring committee
- No
Publications
Colao A, Lombardi G. Growth-hormone and prolactin excess. Lancet. 1998 Oct 31;352(9138):1455-61. doi: 10.1016/S0140-6736(98)03356-X.
PubMed 9808008Melmed S. Medical progress: Acromegaly. N Engl J Med. 2006 Dec 14;355(24):2558-73. doi: 10.1056/NEJMra062453. No abstract available.
PubMed 17167139Melmed S, Casanueva F, Cavagnini F, Chanson P, Frohman LA, Gaillard R, Ghigo E, Ho K, Jaquet P, Kleinberg D, Lamberts S, Laws E, Lombardi G, Sheppard MC, Thorner M, Vance ML, Wass JA, Giustina A. Consensus statement: medical management of acromegaly. Eur J Endocrinol. 2005 Dec;153(6):737-40. doi: 10.1530/eje.1.02036.
PubMed 16322377Sheppard MC. Primary medical therapy for acromegaly. Clin Endocrinol (Oxf). 2003 Apr;58(4):387-99. doi: 10.1046/j.1365-2265.2003.01734.x.
PubMed 12641619Giustina A, Barkan A, Casanueva FF, Cavagnini F, Frohman L, Ho K, Veldhuis J, Wass J, Von Werder K, Melmed S. Criteria for cure of acromegaly: a consensus statement. J Clin Endocrinol Metab. 2000 Feb;85(2):526-9. doi: 10.1210/jcem.85.2.6363.
PubMed 10690849Colao A, Martino E, Cappabianca P, Cozzi R, Scanarini M, Ghigo E; A.L.I.C.E. Study Group. First-line therapy of acromegaly: a statement of the A.L.I.C.E. (Acromegaly primary medical treatment Learning and Improvement with Continuous Medical Education) Study Group. J Endocrinol Invest. 2006 Dec;29(11):1017-20. doi: 10.1007/BF03349217. No abstract available.
PubMed 17259801Cappabianca P, Alfieri A, Colao A, Ferone D, Lombardi G, de Divitiis E. Endoscopic endonasal transsphenoidal approach: an additional reason in support of surgery in the management of pituitary lesions. Skull Base Surg. 1999;9(2):109-17. doi: 10.1055/s-2008-1058157.
PubMed 17171126Galderisi M, Vitale G, Bianco A, Pivonello R, Lombardi G, Divitiis Od, Colao A. Pulsed tissue Doppler identifies subclinical myocardial biventricular dysfunction in active acromegaly. Clin Endocrinol (Oxf). 2006 Apr;64(4):390-7. doi: 10.1111/j.1365-2265.2006.02475.x.
PubMed 16584510Colao A, Pivonello R, Rosato F, Tita P, De Menis E, Barreca A, Ferrara R, Mainini F, Arosio M, Lombardi G. First-line octreotide-LAR therapy induces tumour shrinkage and controls hormone excess in patients with acromegaly: results from an open, prospective, multicentre trial. Clin Endocrinol (Oxf). 2006 Mar;64(3):342-51. doi: 10.1111/j.1365-2265.2006.02467.x.
PubMed 16487447Colao A, Ferone D, Marzullo P, Lombardi G. Systemic complications of acromegaly: epidemiology, pathogenesis, and management. Endocr Rev. 2004 Feb;25(1):102-52. doi: 10.1210/er.2002-0022.
PubMed 14769829Colao A, Auriemma RS, Savastano S, Galdiero M, Grasso LF, Lombardi G, Pivonello R. Glucose tolerance and somatostatin analog treatment in acromegaly: a 12-month study. J Clin Endocrinol Metab. 2009 Aug;94(8):2907-14. doi: 10.1210/jc.2008-2627. Epub 2009 Jun 2.
PubMed 19491229Colao A, Pivonello R, Galderisi M, Cappabianca P, Auriemma RS, Galdiero M, Cavallo LM, Esposito F, Lombardi G. Impact of treating acromegaly first with surgery or somatostatin analogs on cardiomyopathy. J Clin Endocrinol Metab. 2008 Jul;93(7):2639-46. doi: 10.1210/jc.2008-0299. Epub 2008 Apr 29.
PubMed 18445662
Study at a glance
From the registry record, last updated by the sponsor on 14 Feb 2008. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- An Observational, Retrospective, Comparative Study to Investigate Differential Outcome on Cardiomyopathy Following Control of Acromegaly After Surgery or Somatostatin Analogues Given as First-Line Therapy
- ClinicalTrials.gov ID
- NCT00615004
- Acronym / sponsor ID
- CVAcro / NeuroendoUnit-7
- Conditions
- Acromegaly
- Keywords
- Acromegaly, GH, IGF-I, Octreotide-LAR, Lanreotide, Transsphenoidal surgery
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 215 participants (actual)
- Lead sponsor
- Federico II UniversityUniversity, hospital or other
- Study start
- Jan 1997
- Primary completion
- Dec 2007 (actual)
- Study completion
- Dec 2007 (actual)
- First posted
- 14 Feb 2008 (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.
A direct comparison between the results of surgery or somatostatin analogues (SSA) on cardiovascular complication in acromegaly has never been performed.
Our objective is to investigate whether first-line surgery or SSA have a different outcome on cardiomyopathy after 12 months. The design of the study is retrospective, comparative, non randomized, because of ethical problems.
Setting University Hospital. All patients treated with SSA [either octreotide-LAR (10-40 mg/q28d), or lanreotide (30-120 mg/q28d); dosages up-titrated to control GH and IGF-I levels] or operated on by transsphenoidal approach. For the purposes of this study only controlled patients will be included.
Measurements Primary outcome measures were changes in left ventricular mass index (LVMi), diastolic [early to atrial mitral flow velocity (E/A)] and systolic perform-ance [LV ejection fraction (LVEF)]. Secondary outcome measures were reduction of total/HDL-cholesterol ratio, as a cardiovascular (CV) risk parameter, improvement of glucose profile and pituitary function, as indirect causes of CV improvement.
Expected results: SSA and surgery groups should have similar results in terms of improvement of cardiomyopathy. However, recent data suggest that SSA reduce directly heart rate and cardiomyocytes performance: clinical implications of these evidences suggest that SSA will improve cardiovascular outcome more than surgery. Moreover, after surgery, replacement therapy already stabilised or of new onset, has never been considered so far in this setting.
Detailed description
We will review all files from consecutive patients with active acromegaly coming to the Units of Endocrinology or Neurosurgery of the "Federico II" University of Naples from Jan 1st 1997 to December 31st 2006, primarily treated with either surgery or depot SSA, i.e. lanreotide (LAN) or slow-release octreotide (LAR), and with an available follow-up of at least 12 months. Due to the study design, this is a non randomized study. However, our routine procedure generally considers first-line treatment with SSA for 6-12 months, unless the tumors are clearly non invasive on Magnetic Resonance Imaging (MRI) and/or the patients who do not present any surgical or anesthesiological risk.
Cure criteria are considered according with Giustina et al. Acromegaly is considered to be controlled if mean fasting GH levels were ≤2.5 μg/liter in presence of normal IGF-I levels for sex and age. Nadir GH after oral glucose load (oGTT) ≤1 μg/liter is also an option to evaluate disease control according with the 2000 Consensus Statement. However, oGTT is generally not routinely performed in patients receiving SSA, since GH-induced glucose suppression is likely to be mediated by the endogenous somatostatin tone. To avoid ascertainment bias, disease control after surgery and SSA will be only based on fasting GH and IGF-I levels. The diagnosis of acromegaly is defined as previously reported, by high serum GH levels during a 6 hr time course, not suppressible <1 µg/l after oGTT and high plasma IGF-I levels for age [expressed as value upper limit of normal range (ULN)].
For the purpose of this study only the patients with controlled acromegaly will be included to provide a period of follow-up long enough to investigate changes in cardiomyopathy parameters.
Study protocol: As for our routine procedure, at diagnosis all the patients undergo a complete metabolic and endocrine screening. After an overnight fasting, serum IGF-I levels are assayed twice in a single sample at the time 0 of the GH profile; GH levels are calculated as the mean value of at least 5 (up to 8) samples drawn every 30 min over a period of three-six hours and the average value will be considered for the statistical analysis; fasting total cholesterol, HDL cholesterol, glucose and insulin levels are also measured. The total/HDL-cholesterol ratio, index of cardiovascular risk, is calculated.
Study design
- Observational model
- Cohort
- Time perspective
- Retrospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| 1-SSA | – | –All patients receiving first-line depot SSA treatment, with either octreotide-LAR or lanreotide, achieving control of the disease, and with available follow-up after 12 months of treatment. |
| 2-Surgery | – | –All patients treated with first-line surgery via trans-sphenoidal route by microscopic and/or endoscopic approach, who did not require any additional therapy for acromegaly and with available follow-up after 12 months of treatment |
Who may qualify
- Ages
- 18 to 85 years
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
- Study population
- We will review all files from consecutive patients with active acromegaly coming to the Units of Endocrinology or Neurosurgery of the "Federico II" University of Naples from Jan 1st 1997 to December 31st 2006, primarily treated with either surgery or depot SSA, i.e. lanreotide (LAN) or slow-release octreotide (LAR), and with an available follow-up of at least 12 months. Due to the study design, this is a non ran-domized study. However, our routine procedure generally considers first-line treatment with SSA for 6-12 months, unless the tumors are clearly non invasive on Magnetic Resonance Imaging (MRI) and/or the patients who do not present any surgical or anesthesiological risk.
Key inclusion criteria (3 listed)
- Patients treated with first-line surgery via trans-sphenoidal route by microscopic and/or endoscopic approach or with first-line depot SSA treatment
- Achieving control of the disease; AND
- With available follow-up after 12 months of treatment
Key exclusion criteria (4 listed)
- Patients receiving second surgery within 3 months from first surgery
- Requiring combined dopamine-agonists and SSA because of a mixed GH/PRL-secreting tumor
- Receiving the s.c. octreotide for longer than 15 days; OR
- Requiring surgery or SSA as second-line treatment before the completion of the 12 months or with a follow-up shorter than 6 months after surgery or pharmacotherapy
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
Changes of left ventricular mass index (LVMi), as measure of LV hypertrophy, early to atrial mitral flow velocity (E/A), as measure of diastolic function, and left ventricular ejection fraction (LVEF), as measure of systolic function.
Time frame: 12 months
1 secondary outcome
Changes in the total/HDL cholesterol ratio, glucose tolerance, measured as fasting glucose levels and HOMA reduction, and improvement of pituitary function
Time frame: 12 months
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 14 Feb 2008.
- Results publication: PubMed 9808008Colao A, Lombardi G. Growth-hormone and prolactin excess. Lancet. 1998 Oct 31;352(9138):1455-61. doi: 10.1016/S0140-6736(98)03356-X.
- Results publication: PubMed 17167139Melmed S. Medical progress: Acromegaly. N Engl J Med. 2006 Dec 14;355(24):2558-73. doi: 10.1056/NEJMra062453. No abstract available.
- Results publication: PubMed 16322377Melmed S, Casanueva F, Cavagnini F, Chanson P, Frohman LA, Gaillard R, Ghigo E, Ho K, Jaquet P, Kleinberg D, Lamberts S, Laws E, Lombardi G, Sheppard MC, Thorner M, Vance ML, Wass JA, Giustina A. Consensus statement: medical management of acromegaly. Eur J Endocrinol. 2005 Dec;153(6):737-40. doi: 10.1530/eje.1.02036.
- Results publication: PubMed 12641619Sheppard MC. Primary medical therapy for acromegaly. Clin Endocrinol (Oxf). 2003 Apr;58(4):387-99. doi: 10.1046/j.1365-2265.2003.01734.x.
- Results publication: PubMed 10690849Giustina A, Barkan A, Casanueva FF, Cavagnini F, Frohman L, Ho K, Veldhuis J, Wass J, Von Werder K, Melmed S. Criteria for cure of acromegaly: a consensus statement. J Clin Endocrinol Metab. 2000 Feb;85(2):526-9. doi: 10.1210/jcem.85.2.6363.
- Results publication: PubMed 17259801Colao A, Martino E, Cappabianca P, Cozzi R, Scanarini M, Ghigo E; A.L.I.C.E. Study Group. First-line therapy of acromegaly: a statement of the A.L.I.C.E. (Acromegaly primary medical treatment Learning and Improvement with Continuous Medical Education) Study Group. J Endocrinol Invest. 2006 Dec;29(11):1017-20. doi: 10.1007/BF03349217. No abstract available.
- Results publication: PubMed 17171126Cappabianca P, Alfieri A, Colao A, Ferone D, Lombardi G, de Divitiis E. Endoscopic endonasal transsphenoidal approach: an additional reason in support of surgery in the management of pituitary lesions. Skull Base Surg. 1999;9(2):109-17. doi: 10.1055/s-2008-1058157.
- Results publication: PubMed 16584510Galderisi M, Vitale G, Bianco A, Pivonello R, Lombardi G, Divitiis Od, Colao A. Pulsed tissue Doppler identifies subclinical myocardial biventricular dysfunction in active acromegaly. Clin Endocrinol (Oxf). 2006 Apr;64(4):390-7. doi: 10.1111/j.1365-2265.2006.02475.x.
- Results publication: PubMed 16487447Colao A, Pivonello R, Rosato F, Tita P, De Menis E, Barreca A, Ferrara R, Mainini F, Arosio M, Lombardi G. First-line octreotide-LAR therapy induces tumour shrinkage and controls hormone excess in patients with acromegaly: results from an open, prospective, multicentre trial. Clin Endocrinol (Oxf). 2006 Mar;64(3):342-51. doi: 10.1111/j.1365-2265.2006.02467.x.
- Results publication: PubMed 14769829Colao A, Ferone D, Marzullo P, Lombardi G. Systemic complications of acromegaly: epidemiology, pathogenesis, and management. Endocr Rev. 2004 Feb;25(1):102-52. doi: 10.1210/er.2002-0022.
- Derived from this study: PubMed 19491229Colao A, Auriemma RS, Savastano S, Galdiero M, Grasso LF, Lombardi G, Pivonello R. Glucose tolerance and somatostatin analog treatment in acromegaly: a 12-month study. J Clin Endocrinol Metab. 2009 Aug;94(8):2907-14. doi: 10.1210/jc.2008-2627. Epub 2009 Jun 2.
- Derived from this study: PubMed 18445662Colao A, Pivonello R, Galderisi M, Cappabianca P, Auriemma RS, Galdiero M, Cavallo LM, Esposito F, Lombardi G. Impact of treating acromegaly first with surgery or somatostatin analogs on cardiomyopathy. J Clin Endocrinol Metab. 2008 Jul;93(7):2639-46. doi: 10.1210/jc.2008-0299. Epub 2008 Apr 29.
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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.
Annamaria Colao, MD principal investigator
Federico II University
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 Acromegaly, run by Federico II University at 1 site in Italy.
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 4 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 14 Feb 2008. 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 Italy. 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?
Changes of left ventricular mass index (LVMi), as measure of LV hypertrophy, early to atrial mitral flow velocity (E/A), as measure of diastolic function, and left ventricular ejection fraction (LVEF), as measure of systolic function. (time frame: 12 months). 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 NCT00615004, which also lists 12 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 14 Feb 2008; AzTrials last refreshed its copy on 7 Nov 2026.