Pulmonary Arterial HypertensionPhase 3NCT01392469
Pharmacokinetic Effects of QTI571 on Sildenafil and Bosentan in Pulmonary Arterial Hypertension Participants
A Phase 3 study testing Imatinib, Sildenafil and Bosentan in people with Pulmonary Arterial Hypertension, run by Novartis Pharmaceuticals at 11 sites in 7 countries.
Trial summary
The purpose of this study was to investigate the effects of QTI571 (imatinib) on pharmacokinetics of bosentan and sildenafil at steady state when co-administered to participants with pulmonary arterial hypertension. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Pulmonary Arterial Hypertension
- What is being tested?
- Imatinib, Sildenafil and Bosentan
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 21 participants
- Where
- 11 sitesin 7 countries
- Study dates
- 20 Apr 2011to 25 Oct 2012
- Phase
- Phase 3
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Participants with Pulmonary arterial hypertension (PAH) in World Health Organization (WHO) Diagnostic Group 1, with pulmonary vascular resistance > 800 dyne*sec*cm^-5,
- On stable doses of bosentan and sildenafil
Who cannot join
- Other diagnosis of PAH in World Health Organization (WHO) Diagnostic Group 1 such as congenital large or small unrepaired systemic to pulmonary shunts, portal hypertension, Human Immunodeficiency Virus (HIV) infection, glycogen storage disease, Gaucher's disease, hereditary hemorrhagic teleangiectasia, hemoglobinopathies, myeloproliferative disorders, veno-occlusive pulmonary disease
- Significant lung diseases not related to PAH
- Significant cardiovascular system disorders, hematological system disorders, liver insufficiency
- Significant diseases in other organ system.
- Other protocol-defined inclusion/exclusion criteria may apply
Trial locations and contacts
11 sites in 7 countries.
11 sites in 7 countries
United States3 sites
Novartis Investigative Site
Mineola, New York, 11501
Novartis Investigative Site
Tampa, Florida, 33606
Novartis Investigative Site
Weston, Florida, 33331
Belgium2 sites
Novartis Investigative Site
Brussels, 1070
Novartis Investigative Site
Leuven, 3000
Germany2 sites
Novartis Investigative Site
Berlin, 12683
Novartis Investigative Site
Hanover, 30625
Australia1 site
Novartis Investigative Site
Darlinghurst, New South Wales, 2010
About this study
Official title: A Non-Randomized, Multiple Dose, Three Treatment Period, Open-Label, Single Sequence, Single Group Study to Evaluate the Pharmacokinetic Effect of Two Doses of QTI571 (Imatinib) on the Co-administered Drugs Sildenafil and Bosentan in Pulmonary Arterial Hypertension (PAH) Patients
The purpose of this study was to investigate the effects of QTI571 (imatinib) on pharmacokinetics of bosentan and sildenafil at steady state when co-administered to participants with pulmonary arterial hypertension.
- Conditions
- Pulmonary Arterial Hypertension
- Being tested
- Imatinib, Sildenafil, Bosentan
- Keywords
- Pulmonary Arterial Hypertension, Pulmonary Vascular Resistance, Imatinib, Bosentan, Sildenafil
- Medical subject headings
- Pulmonary Arterial Hypertension
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ImatinibDrug
Also called QTI571
Film coated tablets, oral administration
SildenafilDrug
Oral Administration
BosentanDrug
Oral Administration
| Study group | Role | What they receive |
|---|---|---|
| Imatinib + Bosentan + Sildenafil | Experimental | Participants received treatment with bosentan 125 milligrams (mg) twice daily and sildenafil thrice daily for 8 days in treatment period 1. Participants were on the same sildenafil dose level (20, 40, 50 or 60 mg) they had been at study entry which was well tolerated in conjunction with bosentan. Following treatment period 1, the participants received concomitant treatment of oral imatinib 200 mg daily, bosentan 125 mg twice daily and sildenafil thrice daily for 14 days in treatment period 2. Following treatment period 2, the participants received concomitant treatment of oral imatinib 400 mg daily, bosentan 125 mg twice daily and sildenafil thrice daily for 14 days in treatment period 3. Receives: Drug: Imatinib; Drug: Sildenafil; Drug: Bosentan |
What is being measured
The primary outcome is the main question the study is designed to answer.
Geometric Mean Ratio of Dose Normalized Area Under the Curve From Time Zero to Tau (AUCtau) for Bosentan Before and After Imatinib Administrations
AUCtau was the area under the curve calculated to the end of the dosing interval, tau. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of bosentan was performed on dose normalized AUCtau of bosentan. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Geometric Mean Ratio of Dose Normalized AUCtau for Sildenafil Before and After Imatinib Administrations
AUCtau was the area under the curve calculated to the end of the dosing interval, tau. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of sildenafil was performed on dose normalized AUCtau of sildenafil. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Geometric Mean Ratio of Dose Normalized Maximum Plasma Concentration (Cmax) for Bosentan Before and After Imatinib Administrations
Cmax was the maximum (peak) observed plasma, blood, serum, or other body fluid drug concentration after dose administration. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of bosentan was performed on dose normalized Cmax of bosentan. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Geometric Mean Ratio of Dose Normalized Cmax for Sildenafil Before and After Imatinib Administrations
Cmax was the maximum (peak) observed plasma, blood, serum, or other body fluid drug concentration after dose administration. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of sildenafil was performed on dose normalized Cmax of sildenafil. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals was then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Secondary outcomes (3)
Number of Participants With At Least One or More Adverse Events (AEs)
An adverse event was the appearance or worsening of any undesirable sign, symptom, or medical condition that occurred after starting the study drug even if the event was not considered to be related to study drug. Number of participants with AEs were reported by treatment period.
Measured: From time of first administration of study drug until end of study (up to approximately 18 months)
Dose Normalized Cmax of Imatinib and CGP74588 (Active Metabolite of Imatinib)
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Dose Normalized AUCtau of Imatinib and CGP74588 (Active Metabolite of Imatinib)
Measured: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Jul 2011 (estimated)
- Study start20 Apr 2011
- Primary completion25 Oct 2012
- Study completion25 Oct 2012
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Other trials for Pulmonary Arterial HypertensionStudies of the same condition, open and under way.
- More trials run by Novartis PharmaceuticalsThe 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
- Interventional
- Phase
- Phase 3
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 21 participants (actual)
Sponsor and investigators
- Lead sponsor
- Novartis Pharmaceuticals
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Novartis Pharmaceuticals, Study director, Novartis Pharmaceuticals
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01392469
- Sponsor's protocol ID
- CQTI571A2102
- Other IDs
- 2010-021344-17
- Status last verified
- Jun 2021
- First submitted
- 10 May 2011
- Last updated
- 21 Jun 2021
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 21 Jun 2021. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Non-Randomized, Multiple Dose, Three Treatment Period, Open-Label, Single Sequence, Single Group Study to Evaluate the Pharmacokinetic Effect of Two Doses of QTI571 (Imatinib) on the Co-administered Drugs Sildenafil and Bosentan in Pulmonary Arterial Hypertension (PAH) Patients
- ClinicalTrials.gov ID
- NCT01392469
- Acronym / sponsor ID
- CQTI571A2102
- Conditions
- Pulmonary Arterial Hypertension
- Keywords
- Pulmonary Arterial Hypertension, Pulmonary Vascular Resistance, Imatinib, Bosentan, Sildenafil
- Phase
- Phase 3
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 21 participants (actual)
- Lead sponsor
- Novartis PharmaceuticalsIndustry (pharma, biotech, devices)
- Study start
- 20 Apr 2011 (actual)
- Primary completion
- 25 Oct 2012 (actual)
- Study completion
- 25 Oct 2012 (actual)
- First posted
- 12 Jul 2011 (estimated)
- Results
- Posted 21 Jun 2021
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study was to investigate the effects of QTI571 (imatinib) on pharmacokinetics of bosentan and sildenafil at steady state when co-administered to participants with pulmonary arterial hypertension.
Study design
- Primary purpose
- Treatment
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Imatinib + Bosentan + Sildenafil | Experimental | Drug: Imatinib, Drug: Sildenafil, Drug: BosentanParticipants received treatment with bosentan 125 milligrams (mg) twice daily and sildenafil thrice daily for 8 days in treatment period 1. Participants were on the same sildenafil dose level (20, 40, 50 or 60 mg) they had been at study entry which was well tolerated in conjunction with bosentan. Following treatment period 1, the participants received concomitant treatment of oral imatinib 200 mg daily, bosentan 125 mg twice daily and sildenafil thrice daily for 14 days in treatment period 2. Following treatment period 2, the participants received concomitant treatment of oral imatinib 400 mg daily, bosentan 125 mg twice daily and sildenafil thrice daily for 14 days in treatment period 3. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (2 listed)
- Participants with Pulmonary arterial hypertension (PAH) in World Health Organization (WHO) Diagnostic Group 1, with pulmonary vascular resistance > 800 dyne*sec*cm^-5,
- On stable doses of bosentan and sildenafil
Key exclusion criteria (5 listed)
- Other diagnosis of PAH in World Health Organization (WHO) Diagnostic Group 1 such as congenital large or small unrepaired systemic to pulmonary shunts, portal hypertension, Human Immunodeficiency Virus (HIV) infection, glycogen storage disease, Gaucher's disease, hereditary hemorrhagic teleangiectasia, hemoglobinopathies, myeloproliferative disorders, veno-occlusive pulmonary disease
- Significant lung diseases not related to PAH
- Significant cardiovascular system disorders, hematological system disorders, liver insufficiency
- Significant diseases in other organ system.
- Other protocol-defined inclusion/exclusion criteria may apply
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 |
|---|---|---|
| ImatinibAlso: QTI571Film coated tablets, oral administration | Drug | Imatinib + Bosentan + Sildenafil |
| SildenafilOral Administration | Drug | Imatinib + Bosentan + Sildenafil |
| BosentanOral Administration | Drug | Imatinib + Bosentan + Sildenafil |
Primary outcome
Geometric Mean Ratio of Dose Normalized Area Under the Curve From Time Zero to Tau (AUCtau) for Bosentan Before and After Imatinib Administrations
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
AUCtau was the area under the curve calculated to the end of the dosing interval, tau. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of bosentan was performed on dose normalized AUCtau of bosentan. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Geometric Mean Ratio of Dose Normalized AUCtau for Sildenafil Before and After Imatinib Administrations
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
AUCtau was the area under the curve calculated to the end of the dosing interval, tau. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of sildenafil was performed on dose normalized AUCtau of sildenafil. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Geometric Mean Ratio of Dose Normalized Maximum Plasma Concentration (Cmax) for Bosentan Before and After Imatinib Administrations
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Cmax was the maximum (peak) observed plasma, blood, serum, or other body fluid drug concentration after dose administration. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of bosentan was performed on dose normalized Cmax of bosentan. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals were then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
Geometric Mean Ratio of Dose Normalized Cmax for Sildenafil Before and After Imatinib Administrations
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Cmax was the maximum (peak) observed plasma, blood, serum, or other body fluid drug concentration after dose administration. The effect of co-administration of imatinib at two doses (200 and 400 mg) on the pharmacokinetics of sildenafil was performed on dose normalized Cmax of sildenafil. A mixed effects linear model was fitted to the log-transformed PK parameters. This model included treatment (i.e., dose of imatinib) as a fixed effect, and participant as a random effect. Estimates for the treatment differences and associated 90% confidence intervals were obtained from the above model. These estimates and confidence intervals was then "back-transformed" to the original scale, giving, for each dose level of imatinib, the ratio of imatinib + co-administered sildenafil and bosentan (test) relative to the co-administered drugs alone (sildenafil + bosentan) (reference).
3 secondary outcomes
Number of Participants With At Least One or More Adverse Events (AEs)
Time frame: From time of first administration of study drug until end of study (up to approximately 18 months)
Dose Normalized Cmax of Imatinib and CGP74588 (Active Metabolite of Imatinib)
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Dose Normalized AUCtau of Imatinib and CGP74588 (Active Metabolite of Imatinib)
Time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 21 Jun 2021.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
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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.
Novartis Pharmaceuticals study director
Novartis Pharmaceuticals
11 sites in 7 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 3 study testing Imatinib, Sildenafil and Bosentan in people with Pulmonary Arterial Hypertension, run by Novartis Pharmaceuticals at 11 sites in 7 countries.
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 2 inclusion and 5 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 21 Jun 2021. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 11 sites in United States, Belgium, Germany, Australia, Italy and 2 more countries. 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.
What does this phase mean?
Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 21 Jun 2021). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
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?
Geometric Mean Ratio of Dose Normalized Area Under the Curve From Time Zero to Tau (AUCtau) for Bosentan Before and After Imatinib Administrations (time frame: Day 1: pre-dose, Day 8: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10 and 12 hours post-dose, Day 9: pre-dose, Days 22 and 36: pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 10, 12 and 24 hours post-dose). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
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 21 Jun 2021.