Phase 2 Study of Ambrisentan for Liver Function Test Rescue in Pulmonary Arterial Hypertension

Sponsor
Gilead Sciences (Industry)
Overall Status
Completed
CT.gov ID
NCT00423592
Collaborator
(none)
36
46

Study Details

Study Description

Brief Summary

This Phase 2 study was to determine the incidence of increased serum aminotransferase concentrations (alanine aminotransferase [ALT] and/or aspartate aminotransferase [AST]), as well as the overall safety and tolerability of ambrisentan, in participants with pulmonary arterial hypertension (PAH), idiopathic PAH (IPAH), or familial PAH (FPAH) who had previously discontinued ERA therapy (bosentan or sitaxsentan) due to increased serum ALT or AST concentrations.

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Actual Enrollment :
36 participants
Allocation:
Non-Randomized
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Phase 2, Open-label, Multicenter Study Evaluating Ambrisentan in Subjects With Pulmonary Arterial Hypertension Who Have Previously Discontinued Endothelin Receptor Antagonist Therapy Due to Serum Aminotransferase Abnormalities
Study Start Date :
May 1, 2005
Actual Primary Completion Date :
Jan 1, 2006
Actual Study Completion Date :
Mar 1, 2009

Outcome Measures

Primary Outcome Measures

  1. The Incidence of Confirmed Serum Alanine Aminotransferase (ALT) or Aspartate Aminotransferase (AST) Concentrations > 3 x the Upper Limit of Normal (ULN) Considered to be Related to Ambrisentan and Resulted in Discontinuation of Study Drug. [Week 12]

    The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 3 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in discontinuation of study drug. Safety analysis set included all participants who received at least 1 dose of study drug.

Secondary Outcome Measures

  1. The Incidence of Confirmed Serum ALT or AST Concentrations > 5 x ULN That Were Related to Ambrisentan and Resulted in Discontinuation of Study Drug. [Week 12]

    The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 5 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in discontinuation of drug. Safety analysis set included all participants who received at least 1 dose of study drug.

  2. The Incidence of Confirmed Serum ALT or AST Concentrations > 3 x ULN That Were Related to Ambrisentan and Resulted in Dose Reduction [Week 12]

    The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 3 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in dose reduction. Safety analysis set included all participants who received at least 1 dose of study drug.

  3. A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in the 6-Minute Walk Distance Test (6MWD) [Baseline to Week 12]

    The 6MWD test is a measure of exercise tolerance, and measures the distance an individual is able to walk over a total of six minutes on a hard, flat surface.

  4. A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in Borg Dyspnea Index Immediately Following Exercise [Baseline to Week 12]

    Change from baseline evaluated after 12 weeks of ambrisentan therapy in Borg dyspnea index (measured as units on a scale) immediately following exercise. Borg Dyspnea Index, a measure of perceived shortness of breath: 0 units on a scale (none) to 10 units on a scale (maximum breathlessness).

  5. A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in WHO Functional Class [Baseline to Week 12]

    Classes: I) pulmonary hypertension (PH); ordinary physical activity not limited or causes undue dyspnea or fatigue, chest pain, or near syncope. II) PH; ordinary physical activity slightly limited and causes undue dyspnea or fatigue, chest pain, or near syncope; comfortable at rest. III) PH; physical activity markedly limited and less than ordinary physical activity causes undue dyspnea or fatigue, chest pain, or near syncope; comfortable at rest. IV) PH; physical activity causes symptoms and increased discomfort; signs of right heart failure; dyspnea/fatigue possibly at rest.

  6. A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in Short Form 36 (SF-36) Health Survey Scale - Composite Physical Health [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). The first 6 concepts constitute the physical component summary. Each item is scored from 0 to 100 (least healthy to most healthy).

  7. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Composite Mental Health [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). The last 5 concepts constitute the mental component summary. Each item is scored from 0 to 100 (least healthy to most healthy).

  8. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Physical Functioning [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  9. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Role Physical [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  10. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Bodily Pain [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  11. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - General Health [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  12. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Vitality [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  13. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Social Functioning [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  14. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Role Emotional [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

  15. Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Mental Health [Baseline to Week 12]

    The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).

Eligibility Criteria

Criteria

Ages Eligible for Study:
12 Years to 75 Years
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Summary of Inclusion Criteria:
  • Males and Females between 12 and 75 years of age

  • Current diagnosis of IPAH, FPAH, or PAH associated with collagen vascular disease, congenital systemic-to-pulmonary shunts, anorexigen use, HIV infection

  • Must have previously discontinued bosentan or sitaxsentan therapy due to serum aminotransferase (ALT and/or AST) concentrations > 3 x ULN

  • Must have normal (< 1 x ULN) serum ALT and AST concentrations at screening

  • Six-minute Walk distance of at least 150 meters at screening

  • If receiving sildenafil or a clinically approved prostanoid for PAH, must have been on stable therapy for at least 4 weeks prior to screening

  • Subjects with a diagnosis of HIV must have stable disease status during the screening period

Contacts and Locations

Locations

No locations specified.

Sponsors and Collaborators

  • Gilead Sciences

Investigators

None specified.

Study Documents (Full-Text)

None provided.

More Information

Publications

None provided.
Responsible Party:
Gilead Sciences
ClinicalTrials.gov Identifier:
NCT00423592
Other Study ID Numbers:
  • AMB-222
First Posted:
Jan 18, 2007
Last Update Posted:
Jun 17, 2013
Last Verified:
Jun 1, 2013

Study Results

Participant Flow

Recruitment Details
Pre-assignment Detail
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Period Title: Overall Study
STARTED 36
Completed Preliminary Analysis Cut-off 34
COMPLETED 29
NOT COMPLETED 7

Baseline Characteristics

Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Overall Participants 36
Age (Count of Participants)
<=18 years
0
0%
Between 18 and 65 years
22
61.1%
>=65 years
14
38.9%
Age (years) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [years]
57.2
(13.39)
Sex: Female, Male (Count of Participants)
Female
31
86.1%
Male
5
13.9%
Race/Ethnicity, Customized (participants) [Number]
Caucasian
28
77.8%
Black
2
5.6%
Asian
2
5.6%
Hispanic
3
8.3%
Other
1
2.8%
Region of Enrollment (participants) [Number]
United States
26
72.2%
Australia
5
13.9%
Netherlands
3
8.3%
Belgium
2
5.6%
Pulmonary Arterial Hypertension Etiology (participants) [Number]
Idiopathic pulmonary arterial hypertension
23
63.9%
Familial pulmonary arterial hypertension
1
2.8%
Associated pulmonary arterial hypertension
12
33.3%
Pulmonary Arterial Hypertension Treatment (participants) [Number]
Ambrisentan only
11
30.6%
Ambrisentan/sildenafil
12
33.3%
Ambrisentan/prostanoid
8
22.2%
Ambrisentan/sildenafil/prostanoid
5
13.9%
World Health Organization (WHO) Functional Class (participants) [Number]
Class I
0
0%
Class II
13
36.1%
Class III
23
63.9%
Class IV
0
0%
Baseline 6-Minute Walk Distance (meters) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [meters]
397.2
(104.59)
Body Mass Index (kg/m^2) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [kg/m^2]
27.2
(5.44)
Borg dyspnea index (units on a scale) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [units on a scale]
4.2
(2.31)
Cardiac index (L/min/m^2) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [L/min/m^2]
2.7
(1.02)
Height (cm) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [cm]
165.1
(7.22)
Mean pulmonary artery pressure (mmHg) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [mmHg]
48.4
(13.50)
Pulmonary arterial hypertension present (year) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [year]
3.8
(4.99)
Pulmonary capillary wedge pressure (mmHg) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [mmHg]
10.1
(5.38)
Pulmonary vascular resistance (mmHg/L/min) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [mmHg/L/min]
10.3
(5.75)
Right atrial pressure (mmHg) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [mmHg]
7.9
(5.29)
Weight (kg) [Mean (Standard Deviation) ]
Mean (Standard Deviation) [kg]
74.1
(15.36)

Outcome Measures

1. Primary Outcome
Title The Incidence of Confirmed Serum Alanine Aminotransferase (ALT) or Aspartate Aminotransferase (AST) Concentrations > 3 x the Upper Limit of Normal (ULN) Considered to be Related to Ambrisentan and Resulted in Discontinuation of Study Drug.
Description The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 3 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in discontinuation of study drug. Safety analysis set included all participants who received at least 1 dose of study drug.
Time Frame Week 12

Outcome Measure Data

Analysis Population Description
The Safety analysis set was defined as all subjects who received at least 1 dose of study drug. All subjects who received at least 1 dose of ambrisentan were followed (to the extent possible) to the end of the study and included in the analyses of safety.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 36
Number [Participants]
0
0%
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Sample size: 30 participants; 80% power to rule out 50% recurrence rate of serum ALT/AST abnormalities following ambrisentan treatment (assumes 25% recurrence rate); 99% power to rule out 75% recurrence rate (assumes 37.5% recurrence rate). H_0 = proportion of subjects experiencing primary endpoint at 12% vs 1-sided alternative of < 12%. P-value from exact binomial test. Summary statistics included the estimated proportion, 95% confidence interval (CI), and the p-value of the hypothesis test.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.01
Comments
Method Exact binomial test
Comments A 1-sample test for a binomial proportion was performed.
Method of Estimation Estimation Parameter Proportion
Estimated Value 0
Confidence Interval (2-Sided) 95%
0.0 to 9.7
Parameter Dispersion Type: Standard Deviation
Value: 0.0
Estimation Comments
2. Secondary Outcome
Title The Incidence of Confirmed Serum ALT or AST Concentrations > 5 x ULN That Were Related to Ambrisentan and Resulted in Discontinuation of Study Drug.
Description The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 5 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in discontinuation of drug. Safety analysis set included all participants who received at least 1 dose of study drug.
Time Frame Week 12

Outcome Measure Data

Analysis Population Description
The Safety analysis set was defined as all subjects who received at least 1 dose of study drug. All subjects who received at least 1 dose of ambrisentan were followed (to the extent possible) to the end of the study and included in the analyses of safety.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 36
Number [participants]
0
0%
3. Secondary Outcome
Title The Incidence of Confirmed Serum ALT or AST Concentrations > 3 x ULN That Were Related to Ambrisentan and Resulted in Dose Reduction
Description The number of participants in the safety analysis set with confirmed serum ALT or AST concentrations > 3 x ULN during 12 weeks of ambrisentan therapy that were related to ambrisentan and resulted in dose reduction. Safety analysis set included all participants who received at least 1 dose of study drug.
Time Frame Week 12

Outcome Measure Data

Analysis Population Description
The Safety analysis set was defined as all subjects who received at least 1 dose of study drug. All subjects who received at least 1 dose of ambrisentan were followed (to the extent possible) to the end of the study and included in the analyses of safety.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 36
Number [participants]
0
0%
4. Secondary Outcome
Title A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in the 6-Minute Walk Distance Test (6MWD)
Description The 6MWD test is a measure of exercise tolerance, and measures the distance an individual is able to walk over a total of six minutes on a hard, flat surface.
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 35
Mean (Standard Deviation) [meters]
23.4
(49.60)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Hypothesis testing and descriptive statistics were carried out on the last-observation-carried-forward (LOCF) 6-minute walk distance change from baseline.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.009
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 23.4
Confidence Interval (2-Sided) 95%
6.3 to 40.4
Parameter Dispersion Type: Standard Deviation
Value: 49.60
Estimation Comments
5. Secondary Outcome
Title A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in Borg Dyspnea Index Immediately Following Exercise
Description Change from baseline evaluated after 12 weeks of ambrisentan therapy in Borg dyspnea index (measured as units on a scale) immediately following exercise. Borg Dyspnea Index, a measure of perceived shortness of breath: 0 units on a scale (none) to 10 units on a scale (maximum breathlessness).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 35
Mean (Standard Deviation) [Units on a scale]
-0.5
(1.51)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Hypothesis testing and descriptive statistics were carried out on the last-observation-carried-forward (LOCF) Borg dyspnea index change from baseline.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.046
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value -0.5
Confidence Interval (2-Sided) 95%
-1.0 to 0.0
Parameter Dispersion Type: Standard Deviation
Value: 1.51
Estimation Comments
6. Secondary Outcome
Title A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in WHO Functional Class
Description Classes: I) pulmonary hypertension (PH); ordinary physical activity not limited or causes undue dyspnea or fatigue, chest pain, or near syncope. II) PH; ordinary physical activity slightly limited and causes undue dyspnea or fatigue, chest pain, or near syncope; comfortable at rest. III) PH; physical activity markedly limited and less than ordinary physical activity causes undue dyspnea or fatigue, chest pain, or near syncope; comfortable at rest. IV) PH; physical activity causes symptoms and increased discomfort; signs of right heart failure; dyspnea/fatigue possibly at rest.
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 35
Improved
15
41.7%
No Change
18
50%
Deteriorated
2
5.6%
7. Secondary Outcome
Title A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in Short Form 36 (SF-36) Health Survey Scale - Composite Physical Health
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). The first 6 concepts constitute the physical component summary. Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
4.6
(6.44)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.001
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 4.6
Confidence Interval (2-Sided) 95%
2.1 to 7.1
Parameter Dispersion Type: Standard Deviation
Value: 6.44
Estimation Comments
8. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Composite Mental Health
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). The last 5 concepts constitute the mental component summary. Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.4
(8.98)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.059
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.4
Confidence Interval (2-Sided) 95%
-0.1 to 6.8
Parameter Dispersion Type: Standard Deviation
Value: 8.98
Estimation Comments
9. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Physical Functioning
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
4.4
(6.86)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.002
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 4.4
Confidence Interval (2-Sided) 95%
1.7 to 7.0
Parameter Dispersion Type: Standard Deviation
Value: 6.86
Estimation Comments
10. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Role Physical
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
7.2
(10.56)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.001
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 7.2
Confidence Interval (2-Sided) 95%
3.1 to 11.3
Parameter Dispersion Type: Standard Deviation
Value: 10.56
Estimation Comments
11. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Bodily Pain
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.1
(6.40)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.017
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.1
Confidence Interval (2-Sided) 95%
0.6 to 5.6
Parameter Dispersion Type: Standard Deviation
Value: 6.40
Estimation Comments
12. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - General Health
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.0
(7.45)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.046
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.0
Confidence Interval (2-Sided) 95%
0.1 to 5.8
Parameter Dispersion Type: Standard Deviation
Value: 7.45
Estimation Comments
13. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Vitality
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
4.5
(7.23)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.003
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 4.5
Confidence Interval (2-Sided) 95%
1.7 to 7.3
Parameter Dispersion Type: Standard Deviation
Value: 7.23
Estimation Comments
14. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Social Functioning
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.5
(9.41)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.059
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.5
Confidence Interval (2-Sided) 95%
-0.1 to 7.2
Parameter Dispersion Type: Standard Deviation
Value: 9.41
Estimation Comments
15. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Role Emotional
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.9
(13.96)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.152
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.9
Confidence Interval (2-Sided) 95%
-1.5 to 9.3
Parameter Dispersion Type: Standard Deviation
Value: 13.96
Estimation Comments
16. Secondary Outcome
Title Secondary Outcome: A Change From Baseline Evaluated After 12 Weeks of Ambrisentan Therapy in SF-36 Health Survey Scale - Mental Health
Description The SF-36 Health Survey is a self-reporting, multi-item scale measuring 8 health concepts: 1) physical functioning, 2) role limitations due to physical health problems, 3) bodily pain, 4) general health, 5) vitality (energy/fatigue), 6) social functioning, 7) role limitations due to emotional problems and 8) mental health (psychological distress and psychological well-being). Each item is scored from 0 to 100 (least healthy to most healthy).
Time Frame Baseline to Week 12

Outcome Measure Data

Analysis Population Description
The Intention-to-Treat (ITT) analysis set was defined as all subjects who received at least 1 dose of study drug and had at least 1 postdose efficacy value.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
Measure Participants 28
Mean (Standard Deviation) [Units on a scale]
3.9
(5.78)
Statistical Analysis 1
Statistical Analysis Overview Comparison Group Selection Ambrisentan
Comments Seven subjects were evaluated by the incorrect version of the SF-36 questionnaire at the baseline visit and were not included in the analysis; therefore n = 28 for mean baseline scores, and n = 28 for mean change from baseline at Week 12.
Type of Statistical Test Superiority or Other
Comments
Statistical Test of Hypothesis p-Value 0.001
Comments
Method t-test, 2 sided
Comments
Method of Estimation Estimation Parameter Mean Difference (Final Values)
Estimated Value 3.9
Confidence Interval (2-Sided) 95%
1.7 to 6.2
Parameter Dispersion Type: Standard Deviation
Value: 5.78
Estimation Comments

Adverse Events

Time Frame Baseline to Week 189
Adverse Event Reporting Description Median exposure to study drug was 108.1 weeks (2.08 years). Two subjects discontinued ambrisentan because of adverse events after 1 and 3 weeks, respectively. Reporting interval for all other subjects was from 36 to 189 weeks.
Arm/Group Title Ambrisentan
Arm/Group Description All eligible subjects received 2.5 mg ambrisentan once daily for a period of 4 weeks before increasing the dose to 5 mg once daily. After Week 24, investigators were allowed to adjust the dose of ambrisentan as clinically indicated (available doses were 2.5, 5, and 10 mg).
All Cause Mortality
Ambrisentan
Affected / at Risk (%) # Events
Total / (NaN)
Serious Adverse Events
Ambrisentan
Affected / at Risk (%) # Events
Total 17/36 (47.2%)
Blood and lymphatic system disorders
anaemia 2/36 (5.6%)
microcytic anaemia 1/36 (2.8%)
Cardiac disorders
acute coronary syndrome 1/36 (2.8%)
acute myocardial infarction 1/36 (2.8%)
atrial fibrillation 2/36 (5.6%)
atrial tachycardia 1/36 (2.8%)
cardiac arrest 1/36 (2.8%)
coronary artery disease 1/36 (2.8%)
palpitations 1/36 (2.8%)
right ventricular failure 1/36 (2.8%)
supraventricular tachycardia 1/36 (2.8%)
Congenital, familial and genetic disorders
gastrointestinal arteriovenous malformation 1/36 (2.8%)
Gastrointestinal disorders
diarrhoea 1/36 (2.8%)
General disorders
chest pain 1/36 (2.8%)
infusion site pain 1/36 (2.8%)
Infections and infestations
catheter site cellulitis 1/36 (2.8%)
central line infection 1/36 (2.8%)
gastroenteritis 1/36 (2.8%)
gastroenteritis viral 1/36 (2.8%)
lobar pneumonia 1/36 (2.8%)
pneumococcal sepsis 1/36 (2.8%)
pneumonia 1/36 (2.8%)
staphylococcal bacteraemia 1/36 (2.8%)
upper respiratory tract infection 1/36 (2.8%)
Investigations
blood potassium increased 1/36 (2.8%)
Metabolism and nutrition disorders
dehydration 2/36 (5.6%)
hypokalaemia 1/36 (2.8%)
hyponatraemia 1/36 (2.8%)
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
breast cancer 1/36 (2.8%)
Nervous system disorders
dizziness 1/36 (2.8%)
dizziness postural 1/36 (2.8%)
ischaemic stroke 1/36 (2.8%)
sciatica 1/36 (2.8%)
syncope 1/36 (2.8%)
Psychiatric disorders
depression 1/36 (2.8%)
Renal and urinary disorders
azotaemia 1/36 (2.8%)
Respiratory, thoracic and mediastinal disorders
chronic obstructive airways disease exacerbated 1/36 (2.8%)
hypoxia 1/36 (2.8%)
pulmonary embolism 1/36 (2.8%)
pulmonary hypertension 5/36 (13.9%)
Other (Not Including Serious) Adverse Events
Ambrisentan
Affected / at Risk (%) # Events
Total 36/36 (100%)
Blood and lymphatic system disorders
anaemia 8/36 (22.2%)
lymphadenopathy 2/36 (5.6%)
Cardiac disorders
atrial fibrillation 4/36 (11.1%)
bradycardia 2/36 (5.6%)
coronary artery disease 2/36 (5.6%)
palpitations 8/36 (22.2%)
tricuspid valve incompetence 3/36 (8.3%)
Ear and labyrinth disorders
vertigo 3/36 (8.3%)
Eye disorders
conjunctival haemorrhage 2/36 (5.6%)
vision blurred 2/36 (5.6%)
Gastrointestinal disorders
abdominal pain 4/36 (11.1%)
abdominal pain upper 2/36 (5.6%)
constipation 3/36 (8.3%)
diarrhoea 7/36 (19.4%)
dyspepsia 3/36 (8.3%)
gastrooesophageal reflux disease 4/36 (11.1%)
nausea 9/36 (25%)
oesophagitis 2/36 (5.6%)
toothache 3/36 (8.3%)
vomiting 2/36 (5.6%)
General disorders
asthenia 2/36 (5.6%)
chest discomfort 4/36 (11.1%)
chest pain 4/36 (11.1%)
chills 2/36 (5.6%)
fatigue 9/36 (25%)
influenza like illness 2/36 (5.6%)
infusion site pain 3/36 (8.3%)
non-cardiac chest pain 2/36 (5.6%)
oedema peripheral 19/36 (52.8%)
pyrexia 5/36 (13.9%)
Immune system disorders
drug hypersensitivity 2/36 (5.6%)
Infections and infestations
bronchitis 4/36 (11.1%)
bronchitis acute 3/36 (8.3%)
eye infection 2/36 (5.6%)
herpes zoster 2/36 (5.6%)
influenza 2/36 (5.6%)
infusion site infection 2/36 (5.6%)
localised infection 2/36 (5.6%)
lower respiratory tract infection 2/36 (5.6%)
nasopharyngitis 5/36 (13.9%)
pharyngitis 3/36 (8.3%)
respiratory tract infection 5/36 (13.9%)
sinusitis 7/36 (19.4%)
upper respiratory tract infection 8/36 (22.2%)
urinary tract infection 6/36 (16.7%)
viral upper respiratory tract infection 2/36 (5.6%)
Injury, poisoning and procedural complications
contusion 2/36 (5.6%)
fall 2/36 (5.6%)
post procedural pain 2/36 (5.6%)
Investigations
excercise capacity decreased 2/36 (5.6%)
international normalised ratio increased 4/36 (11.1%)
weight increased 3/36 (8.3%)
Metabolism and nutrition disorders
dehydration 2/36 (5.6%)
fluid retention 3/36 (8.3%)
hypokalaemia 2/36 (5.6%)
hypomagnesaemia 2/36 (5.6%)
Musculoskeletal and connective tissue disorders
arthralgia 4/36 (11.1%)
back pain 3/36 (8.3%)
neck pain 2/36 (5.6%)
pain in extremity 6/36 (16.7%)
pain in jaw 2/36 (5.6%)
shoulder pain 2/36 (5.6%)
Nervous system disorders
dizziness 5/36 (13.9%)
dizziness postural 2/36 (5.6%)
headache 13/36 (36.1%)
tremor 2/36 (5.6%)
Psychiatric disorders
anxiety 6/36 (16.7%)
depression 2/36 (5.6%)
insomnia 7/36 (19.4%)
Respiratory, thoracic and mediastinal disorders
cough 6/36 (16.7%)
crackles lung 2/36 (5.6%)
dysphonia 2/36 (5.6%)
dyspnoea 4/36 (11.1%)
dyspnoea exacerbated 12/36 (33.3%)
dyspnoea exertional 4/36 (11.1%)
epistaxis 4/36 (11.1%)
hypoxia 2/36 (5.6%)
nasal congestion 5/36 (13.9%)
pharyngolaryngeal pain 2/36 (5.6%)
pleuritic pain 3/36 (8.3%)
pulmonary hypertension 4/36 (11.1%)
rales 2/36 (5.6%)
rhinitis allergic 3/36 (8.3%)
rhinorrhoea 3/36 (8.3%)
wheezing 2/36 (5.6%)
Skin and subcutaneous tissue disorders
dry skin 2/36 (5.6%)
erythema 2/36 (5.6%)
pruritis 2/36 (5.6%)
rash 4/36 (11.1%)
rash macular 2/36 (5.6%)
Vascular disorders
flushing 7/36 (19.4%)
hypotension 3/36 (8.3%)

Limitations/Caveats

Seven subjects were excluded from the change from baseline analysis of the SF-36 Health Survey because the incorrect version of the SF-36 questionnaire was used for evaluation at baseline, which made comparisons problematic.

More Information

Certain Agreements

Principal Investigators are NOT employed by the organization sponsoring the study.

Results Point of Contact

Name/Title Annemarie Vance
Organization Gilead Sciences, Inc.
Phone 650-524-3829
Email Annemarie.Vance@gilead.com
Responsible Party:
Gilead Sciences
ClinicalTrials.gov Identifier:
NCT00423592
Other Study ID Numbers:
  • AMB-222
First Posted:
Jan 18, 2007
Last Update Posted:
Jun 17, 2013
Last Verified:
Jun 1, 2013