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WithdrawnNCT01361087Updated Feb 5, 2016

Circulating Transforming Growth Factor Beta (TGF-β) in Individuals With Marfan Syndrome

A Phase 3 interventional study of Blood draw in Marfan Syndrome, sponsored by Ann & Robert H Lurie Children's Hospital of Chicago. Withdrawn at 1 site in United States. Open to participants aged 6 Months to 24 Years. Per ClinicalTrials.gov, last updated 2016-02-05.

Sponsored by Ann & Robert H Lurie Children's Hospital of Chicago · Phase 3, Interventional, and Diagnostic

Why this study was withdrawn
No outside recruitment of subjects from Main Atenolol VS Losartan NIH study
Phase
Phase 3
Study type
Interventional
Enrollment
0
Allocation
Not applicable
Ages
6 Months to 24 Years
Sex
All
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Study summary

Transforming Growth Factor Beta (TGF-β) is a protein that controls proliferation, cellular differentiation, and other functions in most cells. TGF-β levels play a major role in the pathogenesis of Marfan syndrome, a disease characterized by disproportionate height, long extremities, lens dislocation in the eyes and heart complications such as mitral valve prolapse and aortic enlargement increasing the likelihood of aortic dissection. While the underlying defect in Marfan syndrome is faulty synthesis of the glycoprotein fibrillin I, normally an important component of elastic fibers it has been shown that the Marfan syndrome phenotype can be relieved by addition of a TGF-β antagonist in affected mice.

Read the detailed description

Transforming Growth Factor Beta (TGF-β) is a protein that controls proliferation, cellular differentiation, and other functions in most cells. TGF-β levels play a major role in the pathogenesis of Marfan syndrome, a disease characterized by disproportionate height, long extremities, lens dislocation in the eyes and heart complications such as mitral valve prolapse and aortic enlargement increasing the likelihood of aortic dissection. While the underlying defect in Marfan syndrome is faulty synthesis of the glycoprotein fibrillin I, normally an important component of elastic fibers it has been shown that the Marfan syndrome phenotype can be relieved by addition of a TGF-β antagonist in affected mice. This suggest that while the symptoms of Marfan syndrome may seem consistent with a connective tissue disorder, the mechanism is more likely related to reduced sequestration of TGF-β by fibrillin.

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Conditions studied

  • Marfan Syndrome

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Keywords

  • TGF-B blood levels Atenolol vs, Losartan Study, NIH, NIHLB and NMF
03

In context

Marfan Syndrome

73 studies on the registry are indexed under Marfan Syndrome; 16 are open to participants now.

Browse Marfan Syndrome studies →

Lead sponsor

Ann & Robert H Lurie Children's Hospital of Chicago is the lead sponsor of 180 studies on the registry; 30 are open to participants now.

Of its 10 completed or terminated interventional studies of FDA-regulated products, 5 (50%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
6 Months to 24 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Individual with Marfan syndrome consented in to the Main Atenolol Vs. Losartan NIH study.

Exclusion criteria

Exclusion Criteria:

  • Subjects in the main PHN Marfan trial who have not achieved the maintenance drug dosing or who have stopped taking study drug.
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Study design

Phase
Phase 3
Primary purpose
Diagnostic
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
0 participants (actual)

Interventions

  • OtherBlood draw

    This study includes one blood draw to measure circulating blood levels of TGF-B.

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What researchers measure

Primary outcomes

  1. To determine if circulating levels of TGF-β correlate with treatment arms: Atenolol vs. Losartan.

    Time frame: 1 year

Secondary outcomes

  1. To determine if circulating levels of TGF-β correlate with clinical outcomes within a treatment group or independent treatment groups.

    These clinical outcomes may be a change in aortic root Z-score, final aortic root dimension, final aortic root Z-score and other clinical outcomes in the main Marfan trial.

    Time frame: 1 year

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Study locations

1 site
  • Children's Memorial Hospital Chicago
    Chicago, Illinois 60614, United States
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References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Apr 2011 and a primary completion of Dec 2014. It does not say whether these dates are actual or estimated.

How these figures are worked out, and which studies are left out of them.

Registered
May 25, 2011
First posted
May 26, 2011
Start
Apr 2011
Primary completionActual
Dec 2014
Last update
Feb 5, 2016
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 5, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01361087
Responsible party
Sponsor
First posted
May 26, 2011
Start date
Apr 2011
Primary completion
Dec 2014
Last update
Feb 5, 2016

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Feb 2016. You cannot join it, but the record below documents what was studied.

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