PhenylketonuriaNCT00730080
Sapropterin in Individuals With Phenylketonuria
An observational study of Phenylketonuria, run by Washington University School of Medicine at 1 site in United States.
Trial summary
Investigators at Washington University will examine the effects of sapropterin (Kuvan) on brain and cognition in individuals with phenylketonuria (PKU) using neuropsychological and neuroimaging procedures. Sapropterin is a medication developed by BioMarin Pharmaceutical Inc. Read more about this study
- Who is it for?
- Ages 6 to 50 yearsHealthy volunteers can take part
- Conditions the study is for
- Phenylketonuria
- What is being tested?
- Sapropterin (Kuvan)
- How many people
- 45 participants
- Where
- 1 siteUnited States
- Study dates
- Jul 2008to May 2018
- 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 6 to 50 years
- All sexes
- Healthy volunteers accepted
- Child, Adult
Study population: Primary care clinic for phenylketonuria. St. Louis community for control.
Who may be able to join
- Willing and able to provide informed consent or assent.
- Willing and able to comply with study procedures.
- Greater than or equal to 6 years of age.
- For phenylketonuria,intention of physician to prescribe sapropoterin.
- For phenylketonuria,phenylalanine level greater than or equal to 450μmol/L.
- For phenylketonuria, negative pregnancy test if of childbearing potential.
- For phenylketonuria, willing to use contraception if sexually active.
Who cannot join
- Pregnant, breastfeeding, or planning to become pregnant during study.
- Use of investigational product less than 30 days prior to or during study.
- Concurrent condition that could interfere with participation or safety.
- Any condition creating high risk of poor compliance with study.
- Perceived to be unreliable or unavailable for study.
- Use of L-Dopa, methotrexate, or other drugs that inhibit folate metabolism.
- For phenylketonuria, known hypersensitivity to sapropterin or excipients.
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Effects of Sapropterin on Brain and Cognition in Individuals With Phenylketonuria
Investigators at Washington University will examine the effects of sapropterin (Kuvan) on brain and cognition in individuals with phenylketonuria (PKU) using neuropsychological and neuroimaging procedures. Sapropterin is a medication developed by BioMarin Pharmaceutical Inc. that is approved by the FDA for treatment of patients with PKU to reduce phenylalanine (Phe) levels. Patients beginning treatment with sapropterin as standard clinical care will be enrolled in the study. As a first step, patients with PKU will receive baseline neuropsychological and neuroimaging evaluations 1 day prior to beginning treatment with sapropterin. Screening for response to sapropterin will occur over 4 weeks. At the end of 4 weeks, response to sapropterin will be reviewed. Patients with a reduction of ≥ 20% in blood Phe (i.e., responders) will receive follow-up neuropsychological and neuroimaging evaluations after 6 months of treatment with sapropterin. Patients (both responders and nonresponders) will receive long-term follow-up neuropsychological and neuroimaging evaluations 3 to 5 years after initial enrollment in the study.
The focus of neuropsychological testing will be executive abilities, as these abilities are particularly susceptible to disruption in individuals with PKU. We hypothesize that improvements in these abilities will occur following treatment with sapropterin. For neuroimaging assessments, structural magnetic resonance imaging (MRI) will permit evaluation of changes in the structure and volume of the gray and white matter of the brain, whereas diffusion tensor imaging (DTI) will permit evaluation of microstructural white matter integrity.
Read the detailed description
Investigators at Washington University will examine the effects of sapropterin (Kuvan) on brain and cognition in individuals with phenylketonuria (PKU) using neuropsychological and neuroimaging procedures. Sapropterin is a medication developed by BioMarin Pharmaceutical Inc. that is approved by the FDA for treatment of patients with PKU to reduce phenylalanine (Phe) levels. Patients beginning treatment with sapropterin as standard clinical care will be enrolled. As a first step, patients with PKU who are ≥ 6 years of age will receive baseline neuropsychological and neuroimaging evaluations 1 day prior to beginning their treatment with sapropterin. Screening for response to sapropterin (20mg/kg/day) will then occur over 4 weeks as standard care for enrolled patients. At the end of 4 weeks, response to sapropterin will be reviewed. Patients with a reduction of ≥ 20% in blood Phe (i.e., responders) will receive follow-up neuropsychological and neuroimaging evaluations after 6 months of treatment with sapropterin. Patients (both responders and nonresponders) will receive long-term follow-up neuropsychological and neuroimaging evaluations 3 to 5 years after initial enrollment in the study.
A matched control group of healthy individuals without PKU will receive baseline and follow-up neuropsychological and neuroimaging evaluations for comparison purposes and to control for possible practice effects in repeated neuropsychological testing.
The focus of neuropsychological testing will be executive abilities, as these abilities are particularly susceptible to disruption in individuals with PKU. Specifically, the focus of neuropsychological assessment will be working memory, strategic processing, and inhibitory control, as our research group has shown that each of these executive abilities is impaired in individuals with PKU. (White, D. 2001 Neuropsychol.)(White, D. 2002 J. Int. Neuropsychol. Soc.)(Christ, S. 2006 Dev. Neuropsychol.) We hypothesize that improvements in these abilities will occur following treatment with sapropterin.
For neuroimaging assessments, both structural magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI; mean diffusivity and fractional anisotropy) will be used. Structural MRI will permit evaluation of changes in the structure and volume of the gray and white matter of the brain. DTI will permit evaluation of microstructural white matter integrity. Brain abnormalities have been noted in individuals with PKU, and using DTI our research group recently identified abnormalities in the integrity of white matter in early and continuously treated individuals with PKU.
The primary objectives of the proposed study are two-fold. First, we will determine whether cognition (particularly executive abilities) improves in patients with PKU who have been treated with sapropterin. Second, we will determine whether the integrity of the brain improves in patients with PKU who have been treated with sapropterin. In addition, the interrelationships between changes in cognition and brain will be examined.
- Conditions
- Phenylketonuria
- Being tested
- Sapropterin (Kuvan)
- Keywords
- phenylketonuria, sapropterin, Kuvan, cognition, executive abilities, brain
- Medical subject headings
- Phenylketonurias
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Sapropterin (Kuvan)Drug
Also called Kuvan
20mg/kg/day taken once daily or as otherwise prescribed by physician as standard care.
| Study group | Role | What they receive |
|---|---|---|
| Sapropterin (Kuvan) | Individuals with phenylketonuria (PKU) who are beginning treatment with sapropterin. Receives: Drug: Sapropterin (Kuvan) | |
| Control | Healthy individuals without phenylketonuria (PKU). |
What is being measured
The primary outcome is the main question the study is designed to answer.
diffusion tensor imaging of the brain
assesses functional white matter integrity
Measured: baseline & follow-ups
Secondary outcomes (8)
n-back task
assesses working memory
Measured: baseline & follow-ups
recognition span task
assesses working memory
Measured: baseline & follow-ups
list learning task
assesses strategic processing
Measured: baseline & follow-ups
verbal fluency task
assesses strategic processing
Measured: baseline & follow-ups
go/no-go task
assesses inhibitory control
Measured: baseline & follow-ups
stimulus-response compatibility task
assesses inhibitory control
Measured: baseline & follow-ups
structural magnetic resonance imaging of the brain
assesses structural brain integrity
Measured: baseline & follow-ups
Wechsler Abbreviated Scale of Intelligence
assesses general intellectual ability
Measured: baseline & follow-ups
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted8 Aug 2008 (estimated)
- Study startJul 2008
- Primary completionMay 2018
- Study completionMay 2018
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 PhenylketonuriaStudies of the same condition, open and under way.
- More trials run by Washington University School of MedicineThe 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
- Case-control
- Time perspective
- Prospective
- Enrolment
- 45 participants (actual)
Sponsor and investigators
- Lead sponsor
- Washington University School of Medicine
- Sponsor type
- University, hospital or other
- Collaborators
- BioMarin Pharmaceutical, University of Missouri-Columbia
- Responsible party
- Sponsor
- Investigators
- Desiree White, Ph.D., Principal investigator, Washington University School of MedicineDorothy K. Grange, M.D., Principal investigator, Washington University School of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT00730080
- Sponsor's protocol ID
- PKU/Kuvan/White- 201104287
- Status last verified
- Jun 2018
- First submitted
- 1 Aug 2008
- Last updated
- 18 Jun 2018
- Results posted
- No
- Data monitoring committee
- No
Publications
White DA, Nortz MJ, Mandernach T, Huntington K, Steiner RD. Deficits in memory strategy use related to prefrontal dysfunction during early development: evidence from children with phenylketonuria. Neuropsychology. 2001 Apr;15(2):221-9. doi: 10.1037//0894-4105.15.2.221.
PubMed 11324865White DA, Nortz MJ, Mandernach T, Huntington K, Steiner RD. Age-related working memory impairments in children with prefrontal dysfunction associated with phenylketonuria. J Int Neuropsychol Soc. 2002 Jan;8(1):1-11.
PubMed 11843066Christ SE, Steiner RD, Grange DK, Abrams RA, White DA. Inhibitory control in children with phenylketonuria. Dev Neuropsychol. 2006;30(3):845-64. doi: 10.1207/s15326942dn3003_5.
PubMed 17083296Araujo GC, Christ SE, Steiner RD, Grange DK, Nardos B, McKinstry RC, White DA. Response monitoring in children with phenylketonuria. Neuropsychology. 2009 Jan;23(1):130-4. doi: 10.1037/a0013488.
PubMed 19210041Christ SE, Huijbregts SC, de Sonneville LM, White DA. Executive function in early-treated phenylketonuria: profile and underlying mechanisms. Mol Genet Metab. 2010;99 Suppl 1:S22-32. doi: 10.1016/j.ymgme.2009.10.007.
PubMed 20123466White DA, Connor LT, Nardos B, Shimony JS, Archer R, Snyder AZ, Moinuddin A, Grange DK, Steiner RD, McKinstry RC. Age-related decline in the microstructural integrity of white matter in children with early- and continuously-treated PKU: a DTI study of the corpus callosum. Mol Genet Metab. 2010;99 Suppl 1(0 1):S41-6. doi: 10.1016/j.ymgme.2009.09.016.
PubMed 20123469Banerjee P, Grange DK, Steiner RD, White DA. Executive strategic processing during verbal fluency performance in children with phenylketonuria. Child Neuropsychol. 2011;17(2):105-17. doi: 10.1080/09297049.2010.525502. Epub 2010 Dec 7.
PubMed 21140312Janos AL, Grange DK, Steiner RD, White DA. Processing speed and executive abilities in children with phenylketonuria. Neuropsychology. 2012 Nov;26(6):735-43. doi: 10.1037/a0029419. Epub 2012 Aug 6.
PubMed 22866986Bodner KE, Aldridge K, Moffitt AJ, Peck D, White DA, Christ SE. A volumetric study of basal ganglia structures in individuals with early-treated phenylketonuria. Mol Genet Metab. 2012 Nov;107(3):302-7. doi: 10.1016/j.ymgme.2012.08.007. Epub 2012 Aug 18.
PubMed 23006929Antenor-Dorsey JA, Hershey T, Rutlin J, Shimony JS, McKinstry RC, Grange DK, Christ SE, White DA. White matter integrity and executive abilities in individuals with phenylketonuria. Mol Genet Metab. 2013 Jun;109(2):125-31. doi: 10.1016/j.ymgme.2013.03.020. Epub 2013 Apr 6.
PubMed 23608077Peng H, Peck D, White DA, Christ SE. Tract-based evaluation of white matter damage in individuals with early-treated phenylketonuria. J Inherit Metab Dis. 2014 Mar;37(2):237-43. doi: 10.1007/s10545-013-9650-y. Epub 2013 Sep 17.
PubMed 24043380White DA, Antenor-Dorsey JA, Grange DK, Hershey T, Rutlin J, Shimony JS, McKinstry RC, Christ SE. White matter integrity and executive abilities following treatment with tetrahydrobiopterin (BH4) in individuals with phenylketonuria. Mol Genet Metab. 2013 Nov;110(3):213-7. doi: 10.1016/j.ymgme.2013.07.010. Epub 2013 Jul 19.
PubMed 23928118
Study at a glance
From the registry record, last updated by the sponsor on 18 Jun 2018. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Effects of Sapropterin on Brain and Cognition in Individuals With Phenylketonuria
- ClinicalTrials.gov ID
- NCT00730080
- Acronym / sponsor ID
- PKU/Kuvan/White- 201104287
- Conditions
- Phenylketonuria
- Keywords
- phenylketonuria, sapropterin, Kuvan, cognition, executive abilities, brain
- Study type
- Observational
- Recruitment status
- Completed
- Enrolment
- 45 participants (actual)
- Lead sponsor
- Washington University School of MedicineUniversity, hospital or other
- Collaborators
- BioMarin Pharmaceutical, University of Missouri-Columbia
- Study start
- Jul 2008
- Primary completion
- May 2018 (actual)
- Study completion
- May 2018 (actual)
- First posted
- 8 Aug 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.
Investigators at Washington University will examine the effects of sapropterin (Kuvan) on brain and cognition in individuals with phenylketonuria (PKU) using neuropsychological and neuroimaging procedures. Sapropterin is a medication developed by BioMarin Pharmaceutical Inc. that is approved by the FDA for treatment of patients with PKU to reduce phenylalanine (Phe) levels. Patients beginning treatment with sapropterin as standard clinical care will be enrolled in the study. As a first step, patients with PKU will receive baseline neuropsychological and neuroimaging evaluations 1 day prior to beginning treatment with sapropterin. Screening for response to sapropterin will occur over 4 weeks. At the end of 4 weeks, response to sapropterin will be reviewed. Patients with a reduction of ≥ 20% in blood Phe (i.e., responders) will receive follow-up neuropsychological and neuroimaging evaluations after 6 months of treatment with sapropterin. Patients (both responders and nonresponders) will receive long-term follow-up neuropsychological and neuroimaging evaluations 3 to 5 years after initial enrollment in the study.
The focus of neuropsychological testing will be executive abilities, as these abilities are particularly susceptible to disruption in individuals with PKU. We hypothesize that improvements in these abilities will occur following treatment with sapropterin. For neuroimaging assessments, structural magnetic resonance imaging (MRI) will permit evaluation of changes in the structure and volume of the gray and white matter of the brain, whereas diffusion tensor imaging (DTI) will permit evaluation of microstructural white matter integrity.
Detailed description
Investigators at Washington University will examine the effects of sapropterin (Kuvan) on brain and cognition in individuals with phenylketonuria (PKU) using neuropsychological and neuroimaging procedures. Sapropterin is a medication developed by BioMarin Pharmaceutical Inc. that is approved by the FDA for treatment of patients with PKU to reduce phenylalanine (Phe) levels. Patients beginning treatment with sapropterin as standard clinical care will be enrolled. As a first step, patients with PKU who are ≥ 6 years of age will receive baseline neuropsychological and neuroimaging evaluations 1 day prior to beginning their treatment with sapropterin. Screening for response to sapropterin (20mg/kg/day) will then occur over 4 weeks as standard care for enrolled patients. At the end of 4 weeks, response to sapropterin will be reviewed. Patients with a reduction of ≥ 20% in blood Phe (i.e., responders) will receive follow-up neuropsychological and neuroimaging evaluations after 6 months of treatment with sapropterin. Patients (both responders and nonresponders) will receive long-term follow-up neuropsychological and neuroimaging evaluations 3 to 5 years after initial enrollment in the study.
A matched control group of healthy individuals without PKU will receive baseline and follow-up neuropsychological and neuroimaging evaluations for comparison purposes and to control for possible practice effects in repeated neuropsychological testing.
The focus of neuropsychological testing will be executive abilities, as these abilities are particularly susceptible to disruption in individuals with PKU. Specifically, the focus of neuropsychological assessment will be working memory, strategic processing, and inhibitory control, as our research group has shown that each of these executive abilities is impaired in individuals with PKU. (White, D. 2001 Neuropsychol.)(White, D. 2002 J. Int. Neuropsychol. Soc.)(Christ, S. 2006 Dev. Neuropsychol.) We hypothesize that improvements in these abilities will occur following treatment with sapropterin.
For neuroimaging assessments, both structural magnetic resonance imaging (MRI) and diffusion tensor imaging (DTI; mean diffusivity and fractional anisotropy) will be used. Structural MRI will permit evaluation of changes in the structure and volume of the gray and white matter of the brain. DTI will permit evaluation of microstructural white matter integrity. Brain abnormalities have been noted in individuals with PKU, and using DTI our research group recently identified abnormalities in the integrity of white matter in early and continuously treated individuals with PKU.
The primary objectives of the proposed study are two-fold. First, we will determine whether cognition (particularly executive abilities) improves in patients with PKU who have been treated with sapropterin. Second, we will determine whether the integrity of the brain improves in patients with PKU who have been treated with sapropterin. In addition, the interrelationships between changes in cognition and brain will be examined.
Study design
- Observational model
- Case-control
- Time perspective
- Prospective
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sapropterin (Kuvan) | – | Drug: Sapropterin (Kuvan)Individuals with phenylketonuria (PKU) who are beginning treatment with sapropterin. |
| Control | – | –Healthy individuals without phenylketonuria (PKU). |
Who may qualify
- Ages
- 6 to 50 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Child, Adult
- Study population
- Primary care clinic for phenylketonuria. St. Louis community for control.
Key inclusion criteria (7 listed)
- Willing and able to provide informed consent or assent.
- Willing and able to comply with study procedures.
- Greater than or equal to 6 years of age.
- For phenylketonuria,intention of physician to prescribe sapropoterin.
- For phenylketonuria,phenylalanine level greater than or equal to 450μmol/L.
Key exclusion criteria (7 listed)
- Pregnant, breastfeeding, or planning to become pregnant during study.
- Use of investigational product less than 30 days prior to or during study.
- Concurrent condition that could interfere with participation or safety.
- Any condition creating high risk of poor compliance with study.
- Perceived to be unreliable or unavailable for study.
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 |
|---|---|---|
| Sapropterin (Kuvan)Also: Kuvan20mg/kg/day taken once daily or as otherwise prescribed by physician as standard care. | Drug | Sapropterin (Kuvan) |
Primary outcome
diffusion tensor imaging of the brain
Time frame: baseline & follow-ups
assesses functional white matter integrity
8 secondary outcomes
n-back task
Time frame: baseline & follow-ups
recognition span task
Time frame: baseline & follow-ups
list learning task
Time frame: baseline & follow-ups
verbal fluency task
Time frame: baseline & follow-ups
go/no-go task
Time frame: baseline & follow-ups
stimulus-response compatibility task
Time frame: baseline & follow-ups
structural magnetic resonance imaging of the brain
Time frame: baseline & follow-ups
Wechsler Abbreviated Scale of Intelligence
Time frame: baseline & follow-ups
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 18 Jun 2018.
- Background: PubMed 11324865White DA, Nortz MJ, Mandernach T, Huntington K, Steiner RD. Deficits in memory strategy use related to prefrontal dysfunction during early development: evidence from children with phenylketonuria. Neuropsychology. 2001 Apr;15(2):221-9. doi: 10.1037//0894-4105.15.2.221.
- Background: PubMed 11843066White DA, Nortz MJ, Mandernach T, Huntington K, Steiner RD. Age-related working memory impairments in children with prefrontal dysfunction associated with phenylketonuria. J Int Neuropsychol Soc. 2002 Jan;8(1):1-11.
- Background: PubMed 17083296Christ SE, Steiner RD, Grange DK, Abrams RA, White DA. Inhibitory control in children with phenylketonuria. Dev Neuropsychol. 2006;30(3):845-64. doi: 10.1207/s15326942dn3003_5.
- Background: PubMed 19210041Araujo GC, Christ SE, Steiner RD, Grange DK, Nardos B, McKinstry RC, White DA. Response monitoring in children with phenylketonuria. Neuropsychology. 2009 Jan;23(1):130-4. doi: 10.1037/a0013488.
- Background: PubMed 20123466Christ SE, Huijbregts SC, de Sonneville LM, White DA. Executive function in early-treated phenylketonuria: profile and underlying mechanisms. Mol Genet Metab. 2010;99 Suppl 1:S22-32. doi: 10.1016/j.ymgme.2009.10.007.
- Background: PubMed 20123469White DA, Connor LT, Nardos B, Shimony JS, Archer R, Snyder AZ, Moinuddin A, Grange DK, Steiner RD, McKinstry RC. Age-related decline in the microstructural integrity of white matter in children with early- and continuously-treated PKU: a DTI study of the corpus callosum. Mol Genet Metab. 2010;99 Suppl 1(0 1):S41-6. doi: 10.1016/j.ymgme.2009.09.016.
- Background: PubMed 21140312Banerjee P, Grange DK, Steiner RD, White DA. Executive strategic processing during verbal fluency performance in children with phenylketonuria. Child Neuropsychol. 2011;17(2):105-17. doi: 10.1080/09297049.2010.525502. Epub 2010 Dec 7.
- Background: PubMed 22866986Janos AL, Grange DK, Steiner RD, White DA. Processing speed and executive abilities in children with phenylketonuria. Neuropsychology. 2012 Nov;26(6):735-43. doi: 10.1037/a0029419. Epub 2012 Aug 6.
- Results publication: PubMed 23006929Bodner KE, Aldridge K, Moffitt AJ, Peck D, White DA, Christ SE. A volumetric study of basal ganglia structures in individuals with early-treated phenylketonuria. Mol Genet Metab. 2012 Nov;107(3):302-7. doi: 10.1016/j.ymgme.2012.08.007. Epub 2012 Aug 18.
- Results publication: PubMed 23608077Antenor-Dorsey JA, Hershey T, Rutlin J, Shimony JS, McKinstry RC, Grange DK, Christ SE, White DA. White matter integrity and executive abilities in individuals with phenylketonuria. Mol Genet Metab. 2013 Jun;109(2):125-31. doi: 10.1016/j.ymgme.2013.03.020. Epub 2013 Apr 6.
- Results publication: PubMed 24043380Peng H, Peck D, White DA, Christ SE. Tract-based evaluation of white matter damage in individuals with early-treated phenylketonuria. J Inherit Metab Dis. 2014 Mar;37(2):237-43. doi: 10.1007/s10545-013-9650-y. Epub 2013 Sep 17.
- Results publication: PubMed 23928118White DA, Antenor-Dorsey JA, Grange DK, Hershey T, Rutlin J, Shimony JS, McKinstry RC, Christ SE. White matter integrity and executive abilities following treatment with tetrahydrobiopterin (BH4) in individuals with phenylketonuria. Mol Genet Metab. 2013 Nov;110(3):213-7. doi: 10.1016/j.ymgme.2013.07.010. Epub 2013 Jul 19.
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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.
Desiree White, Ph.D. principal investigator
Washington University School of Medicine
Dorothy K. Grange, M.D. principal investigator
Washington University School of Medicine
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 Phenylketonuria, run by Washington University School of Medicine at 1 site in United States.
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 7 inclusion and 7 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 18 Jun 2018. 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 United States. 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?
diffusion tensor imaging of the brain (time frame: baseline & follow-ups). 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 NCT00730080, 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 18 Jun 2018.