A Clinical Trial of Ambrisentan and Tadalafil in Pulmonary Arterial Hypertension Associated With Systemic Sclerosis
ATPAHSS
Sponsor study identifier
Secondary identifiers
NIH
interventional
25
1 country
1
Study Start
January 2010
Date type not reportedThis date has not been verified as actual or estimated.
Primary Completion
November 2014
Actual (reported)Study Completion
November 2014
Actual (reported)This will be a 36-week, single group, open label study assessing the effects of Tadalafil plus Ambrisentan combination therapy in patients with pulmonary arterial hypertension associated with the scleroderma spectrum of disease (PAH-SSD). Standard outcome measures such as six-minute walk distance (6MWD), New York heart Association (NYHA) classification, and hemodynamic measurements will be assessed, as well as novel functional measures of RV-PV function including the transthoracic echocardiogram parameter tricuspid annular plane systolic ejection (TAPSE), contrast-enhanced cardiac MRI and heart rate variability assessed by Holter monitoring. This design (excluding a placebo arm) was selected for ethical concerns and to provide optimal efficiency and active therapy to all study subjects. It also allows for comparisons between the two monotherapies and with combination therapy.
Registry-reported information. Elapsed time and enrollment totals alone do not measure study progress or recruitment pace.
November 2014
Actual (reported)Click on a node to explore related trials.
Some registry-reported names shown below are not yet linked in this graph.
Dates and qualifiers reported by the registry. Estimated dates do not confirm that a milestone has occurred.
January 2010
Date type not reportedThis date has not been verified as actual or estimated.
January 4, 2010
Actual (reported)January 5, 2010
Actual (reported)November 2014
Actual (reported)November 2014
Actual (reported)September 12, 2017
Actual (reported)Right Ventricular (RV) Mass
Assessment of change in Right ventricular mass was done via standard volumetric cine images of the right heart at baseline and comparing it to that at the end of 36 weeks using Cardiac Magnetic Resonance Imaging studies.
baseline and 36 weeks
Pulmonary Vascular Resistance (PVR)
Change in Pulmonary Vascular Resistance (PVR) was ascertained via Right Heart Catheterization (RHC) measurement of the difference between the PVR at baseline and 36 weeks
baseline 36 weeks
Tricuspid Annular Plane Systolic Excursion (TAPSE)
baseline and 36 weeks
This will be a 36-week, single group, open label study assessing the effects of Tadalafil plus Ambrisentan combination therapy in patients with pulmonary arterial hypertension associated with the scleroderma spectrum of disease (PAH-SSD).
tadalafil 20 mg qd and ambrisentan 5 mg qd. Up-titration of study medications will occur at week 4 (ambrisentan 10 mgs daily and tadalafil 40 mg qd). If a subject experiences an intolerable adverse event as a result of an uptitration in the study drug dose, the dose of study drug maybe down titrated to 20 mg of tadalafil and/or 5mg of ambrisentan. If the subject is still experiencing an intolerable adverse event, then the investigator will withdraw the subject from the study.
Registry-reported names are shown in full. Names without a link have not yet been matched to a Syfrah profile.
These entries preserve how the registry describes the intervention. Their treatment roles are shown separately from molecular identities.
Grouped treatment entry
tadalafil and ambrisentan upfront combination therapy
The registry names several treatments. This does not confirm that participants received them together or that they form a single product.
View registry recordJohns Hopkins University
Baltimore, Maryland, 21287, United States
Sato T, Ambale-Venkatesh B, Lima JAC, Zimmerman SL, Tedford RJ, Fujii T, Hulme OL, Pullins EH, Corona-Villalobos CP, Zamanian RT, Minai OA, Girgis RE, Chin K, Khair R, Damico RL, Kolb TM, Mathai SC, Hassoun PM. The impact of ambrisentan and tadalafil upfront combination therapy on cardiac function in scleroderma associated pulmonary arterial hypertension patients: cardiac magnetic resonance feature tracking study. Pulm Circ. 2018 Jan-Mar;8(1):2045893217748307. doi: 10.1177/2045893217748307. Epub 2017 Dec 18.
Hassoun PM, Zamanian RT, Damico R, Lechtzin N, Khair R, Kolb TM, Tedford RJ, Hulme OL, Housten T, Pisanello C, Sato T, Pullins EH, Corona-Villalobos CP, Zimmerman SL, Gashouta MA, Minai OA, Torres F, Girgis RE, Chin K, Mathai SC. Ambrisentan and Tadalafil Up-front Combination Therapy in Scleroderma-associated Pulmonary Arterial Hypertension. Am J Respir Crit Care Med. 2015 Nov 1;192(9):1102-10. doi: 10.1164/rccm.201507-1398OC.
1. An open-label study with no placebo group 2. Relatively small number of patients and therefore vulnerable to confounding natural history with treatment effects 3. Measurements performed at four different institutions 4. Few missing data
Paul Hassoun, MD
Johns Hopkins University
25 participants (actual enrollment reported by the registry).
First Submitted
January 4, 2010
First Posted
January 5, 2010
Study Start
January 2010
Date type not reportedThis date has not been verified as actual or estimated.
6-minute Walk Distance
baseline and 36 weeks
Contact the study team to confirm eligibility.
Primary Completion
November 2014
Actual (reported)Study Completion
November 2014
Actual (reported)Last Updated
September 12, 2017
Results First Posted
September 12, 2017
Record last verified: 2017-08
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Source: ClinicalTrials.gov.
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