Cystic FibrosisPhase 1/2NCT02626182
Evaluation and Treatment of Pulmonary Vascular Disease in Moderate to Severe CF
A Phase 1/2 study testing sildenafil in people with Cystic Fibrosis, run by National Jewish Health at 1 site in United States.
Trial summary
This study evaluates the ability of the drug sildenafil to improved exercise capacity, cardiac performance during exercise, and quality of life in patients with moderate to severe CF lung disease. 3/4 of the subjects will receive sildenafil and 1/4 will receive placebo. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Cystic Fibrosis
- What is being tested?
- sildenafil
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 14 participants
- Where
- 1 siteUnited States
- Study dates
- Dec 2015to 29 Jan 2018
- Phase
- Phase 1/2
- 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
- Confirmed diagnosis of CF based on the following criteria: Positive sweat chloride ≥60mEq/liter (by pilocarpine iontophoresis) and/or Genotype with two identifiable mutations consistent with CF, and accompanied by one or more clinical features consistent with the CF phenotype
- Male or female patients ≥ 18 years of age
- FEV1 ≥ 20% predicted and ≤ 70% predicted (Hankinson)
- Clinically stable without evidence of acute upper or lower respiratory tract infection or current pulmonary exacerbation within the 14 days prior to the screening visit
- Ability to reproducibly perform spirometry (according to ATS criteria)
- Ability to understand and sign a written informed consent or assent and comply with the requirements of the study
- Willingness to maintain chronic CF medication schedule (e.g. alternating month inhaled antibiotics)
Who cannot join
- History of hypersensitivity to sildenafil
- Use of an investigational agent within the 4-week period prior to Visit 1 (Day 0)
- Breastfeeding, pregnant, or verbal expression of unwillingness to practice an acceptable birth control method (abstinence, hormonal or barrier methods, partner sterilization or intrauterine device) during participation in the study for women of child-bearing potential.
- History of significant hepatic disease (AST or ALT > 5 times the upper limit of normal at screening, documented biliary cirrhosis, or portal hypertension),
- History of significant cardiovascular disease (history of aortic stenosis, coronary artery disease, or life-threatening arrhythmia),
- History of severe neurological disease (e.g. history of stroke),
Show all 21Show fewer
- History of severe hematologic disease (e.g. history of bleeding diathesis; current INR > 2.0
- History of severe ophthalmologic disease (e.g. history of retinal impairment or non-arteritic ischemic optic neuritis)
- History of severe renal impairment (creatinine >1.8 mg/dL.)
- Inability to swallow pills
- Previous organ transplantation
- Use of concomitant nitrates, α-blocker, or Ca channel blocker (currently or within one month of Visit 1)
- Use of concomitant medications known to be potent inhibitors of CYP3A4 [e.g. ketoconazole, itraconazole, ritonavir, clarithromycin, erythromycin, rifampin (currently or within one month of initiation of study drug)] NOTE: use of azithromycin is NOT a cause for exclusion
- History of sputum or throat swab culture yielding Burkholderia cepacia or Mycobacterium massiliense within 2 years of screening
- Weight less than 40 kg at Screening
- History of migraine headaches.
- Resting room air oxygen saturation <80% without supplemental oxygen
- Presence of a condition or abnormality that in the opinion of the investigator would compromise the safety of the subject or the quality of the data
- Start of CFTR modulator therapy less than 1 month prior to first dose of sildenafil or placebo
- Use of anticoagulants
- Frank pulmonary hypertension (RVSP >40 mmHg by ECHO)
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Evaluation and Treatment of Pulmonary Vascular Disease in Moderate to Severe Cystic Fibrosis Lung Disease
This study evaluates the ability of the drug sildenafil to improved exercise capacity, cardiac performance during exercise, and quality of life in patients with moderate to severe CF lung disease. 3/4 of the subjects will receive sildenafil and 1/4 will receive placebo.
Read the detailed description
Over time, patients with Cystic Fibrosis (CF) develop disabling lung disease that progresses to chronic respiratory failure, exercise intolerance with marked limitation of physical activity, and premature death. Despite substantial improvements in care, patients with CF often develop pulmonary vascular disease (PVD) that leads to pulmonary hypertension. Previous studies have clearly linked severe pulmonary hypertension and right heart failure with high mortality in CF. Early clinical manifestations of PVD prior to the development of cor pulmonale include shortness of breath and dyspnea with exertion, but the extent to which PVD contributes to the decline in exercise tolerance and quality of life in patients with CF is not known. Early evidence of PVD could be recognized in CF patients through standardized exercise testing and echocardiographic evaluation. Identifying those CF patients with PVD prior to the onset of right ventricular dysfunction may allow pharmacologic intervention to attenuate the progression of cardiovascular disease and improve quality of life. Clinical trials have demonstrated that treatment with the phosphodiesterase type 5 inhibitor, sildenafil, can decrease pulmonary vascular resistance and improve exercise tolerance in non-CF patients with pulmonary hypertension. Because experimental and clinical studies have implicated impaired NO-cGMP signaling in the pathophysiology of lung disease in CF, sildenafil may provide a novel pharmacological approach for treating PVD in patients with CF lung disease.
- Conditions
- Cystic Fibrosis
- Being tested
- sildenafil, placebo
- Medical subject headings
- Cystic Fibrosis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
sildenafilDrug
Also called Revatio, Viagra
active sildenafil
placeboDrug
sugar pill that looks like sildenafil tablets
| Study group | Role | What they receive |
|---|---|---|
| Sildenafil | Experimental | Subjects will be randomized in a 3:1 (sildenafil:placebo) fashion. Subjects randomized to the treatment arm will receive sildenafil 20 mg p.o. t.i.d for 1 week followed by 40 mg p.o. t.i.d. for 11 weeks. Receives: Drug: sildenafil |
| Placebo | Placebo comparator | Subjects randomized to the placebo arm will receive placebo p.o. t.i.d for 1 week followed by 2 placebo tablets p.o. t.i.d. for 11 weeks. Receives: Drug: placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
6 Minute Walk Distance
Change in distance walked between week 1 and week 13 were compared. The difference between the two time points is reported.
Measured: Weeks 1, 13
Cardiopulmonary Exercise Test Work Rate
Work rate (the amount of energy being expended to cycle) was assessed at weeks 1 and 13. The change in maximum work measured during CPET between weeks 1 and 13 is reported.
Measured: Weeks 1 and 13
Secondary outcomes (1)
Cystic Fibrosis Quality of Life-Revised Respiratory Domain Score
The CFQ-R Respiratory domain score (scale 0-100 with higher scores indicating better quality of life) was assessed at weeks 1 and 13. The change in the score between week 1 and week 13 is reported.
Measured: Assessed at weeks 1 and 13
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted10 Dec 2015 (estimated)
- Study startDec 2015
- Primary completion18 Jan 2018
- Study completion29 Jan 2018
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.
- Publications (9)Papers the sponsor has linked to this study.
- Other trials for Cystic FibrosisStudies of the same condition, open and under way.
- 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 1/2
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 14 participants (actual)
Sponsor and investigators
- Lead sponsor
- National Jewish Health
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Jennifer Taylor-Cousar, National Jewish Health
- Investigators
- Jennifer L Taylor-Cousar, MD, Principal investigator, National Jewish Health
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT02626182
- Sponsor's protocol ID
- NationalJewishHealth
- Status last verified
- Jul 2019
- First submitted
- 3 Dec 2015
- Last updated
- 24 Jul 2019
- Results posted
- Yes, on ClinicalTrials.gov
- Data monitoring committee
- Yes
Publications
Orenstein DM, Higgins LW. Update on the role of exercise in cystic fibrosis. Curr Opin Pulm Med. 2005 Nov;11(6):519-23. doi: 10.1097/01.mcp.0000181476.92810.07.
PubMed 16217178Pianosi P, Leblanc J, Almudevar A. Peak oxygen uptake and mortality in children with cystic fibrosis. Thorax. 2005 Jan;60(1):50-4. doi: 10.1136/thx.2003.008102.
PubMed 15618583Almajed A, Lands LC. The evolution of exercise capacity and its limiting factors in cystic fibrosis. Paediatr Respir Rev. 2012 Dec;13(4):195-9. doi: 10.1016/j.prrv.2012.01.001. Epub 2012 Feb 10.
PubMed 23069115Jiang K, Jiao S, Vitko M, Darrah R, Flask CA, Hodges CA, Yu X. The impact of Cystic Fibrosis Transmembrane Regulator Disruption on cardiac function and stress response. J Cyst Fibros. 2016 Jan;15(1):34-42. doi: 10.1016/j.jcf.2015.06.003. Epub 2015 Jun 25.
PubMed 26119592Galie N, Ghofrani HA, Torbicki A, Barst RJ, Rubin LJ, Badesch D, Fleming T, Parpia T, Burgess G, Branzi A, Grimminger F, Kurzyna M, Simonneau G; Sildenafil Use in Pulmonary Arterial Hypertension (SUPER) Study Group. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med. 2005 Nov 17;353(20):2148-57. doi: 10.1056/NEJMoa050010.
PubMed 16291984Mourani PM, Sontag MK, Ivy DD, Abman SH. Effects of long-term sildenafil treatment for pulmonary hypertension in infants with chronic lung disease. J Pediatr. 2009 Mar;154(3):379-84, 384.e1-2. doi: 10.1016/j.jpeds.2008.09.021. Epub 2008 Oct 31.
PubMed 18950791Montgomery GS, Sagel SD, Taylor AL, Abman SH. Effects of sildenafil on pulmonary hypertension and exercise tolerance in severe cystic fibrosis-related lung disease. Pediatr Pulmonol. 2006 Apr;41(4):383-5. doi: 10.1002/ppul.20393.
PubMed 16479610Lubamba B, Lecourt H, Lebacq J, Lebecque P, De Jonge H, Wallemacq P, Leal T. Preclinical evidence that sildenafil and vardenafil activate chloride transport in cystic fibrosis. Am J Respir Crit Care Med. 2008 Mar 1;177(5):506-15. doi: 10.1164/rccm.200703-344OC. Epub 2007 Nov 15.
PubMed 18006891Taylor-Cousar JL, Wiley C, Felton LA, St Clair C, Jones M, Curran-Everett D, Poch K, Nichols DP, Solomon GM, Saavedra MT, Accurso FJ, Nick JA. Pharmacokinetics and tolerability of oral sildenafil in adults with cystic fibrosis lung disease. J Cyst Fibros. 2015 Mar;14(2):228-36. doi: 10.1016/j.jcf.2014.10.006. Epub 2014 Nov 13.
PubMed 25466700
Study at a glance
From the registry record, last updated by the sponsor on 24 Jul 2019. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation and Treatment of Pulmonary Vascular Disease in Moderate to Severe Cystic Fibrosis Lung Disease
- ClinicalTrials.gov ID
- NCT02626182
- Acronym / sponsor ID
- NationalJewishHealth
- Conditions
- Cystic Fibrosis
- Phase
- Phase 1/2
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 14 participants (actual)
- Lead sponsor
- National Jewish HealthUniversity, hospital or other
- Study start
- Dec 2015
- Primary completion
- 18 Jan 2018 (actual)
- Study completion
- 29 Jan 2018 (actual)
- First posted
- 10 Dec 2015 (estimated)
- Results
- Posted 15 Jul 2019
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study evaluates the ability of the drug sildenafil to improved exercise capacity, cardiac performance during exercise, and quality of life in patients with moderate to severe CF lung disease. 3/4 of the subjects will receive sildenafil and 1/4 will receive placebo.
Detailed description
Over time, patients with Cystic Fibrosis (CF) develop disabling lung disease that progresses to chronic respiratory failure, exercise intolerance with marked limitation of physical activity, and premature death. Despite substantial improvements in care, patients with CF often develop pulmonary vascular disease (PVD) that leads to pulmonary hypertension. Previous studies have clearly linked severe pulmonary hypertension and right heart failure with high mortality in CF. Early clinical manifestations of PVD prior to the development of cor pulmonale include shortness of breath and dyspnea with exertion, but the extent to which PVD contributes to the decline in exercise tolerance and quality of life in patients with CF is not known. Early evidence of PVD could be recognized in CF patients through standardized exercise testing and echocardiographic evaluation. Identifying those CF patients with PVD prior to the onset of right ventricular dysfunction may allow pharmacologic intervention to attenuate the progression of cardiovascular disease and improve quality of life. Clinical trials have demonstrated that treatment with the phosphodiesterase type 5 inhibitor, sildenafil, can decrease pulmonary vascular resistance and improve exercise tolerance in non-CF patients with pulmonary hypertension. Because experimental and clinical studies have implicated impaired NO-cGMP signaling in the pathophysiology of lung disease in CF, sildenafil may provide a novel pharmacological approach for treating PVD in patients with CF lung disease.
Study design
- Primary purpose
- Treatment
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Sildenafil | Experimental | Drug: sildenafilSubjects will be randomized in a 3:1 (sildenafil:placebo) fashion. Subjects randomized to the treatment arm will receive sildenafil 20 mg p.o. t.i.d for 1 week followed by 40 mg p.o. t.i.d. for 11 weeks. |
| Placebo | Placebo comparator | Drug: placeboSubjects randomized to the placebo arm will receive placebo p.o. t.i.d for 1 week followed by 2 placebo tablets p.o. t.i.d. for 11 weeks. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (7 listed)
- Confirmed diagnosis of CF based on the following criteria: Positive sweat chloride ≥60mEq/liter (by pilocarpine iontophoresis) and/or Genotype with two identifiable mutations consistent with CF, and accompanied by one or more clinical features consistent with the CF phenotype
- Male or female patients ≥ 18 years of age
- FEV1 ≥ 20% predicted and ≤ 70% predicted (Hankinson)
- Clinically stable without evidence of acute upper or lower respiratory tract infection or current pulmonary exacerbation within the 14 days prior to the screening visit
- Ability to reproducibly perform spirometry (according to ATS criteria)
Key exclusion criteria (21 listed)
- History of hypersensitivity to sildenafil
- Use of an investigational agent within the 4-week period prior to Visit 1 (Day 0)
- Breastfeeding, pregnant, or verbal expression of unwillingness to practice an acceptable birth control method (abstinence, hormonal or barrier methods, partner sterilization or intrauterine device) during participation in the study for women of child-bearing potential.
- History of significant hepatic disease (AST or ALT > 5 times the upper limit of normal at screening, documented biliary cirrhosis, or portal hypertension),
- History of significant cardiovascular disease (history of aortic stenosis, coronary artery disease, or life-threatening arrhythmia),
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 |
|---|---|---|
| sildenafilAlso: Revatio, Viagraactive sildenafil | Drug | Sildenafil |
| placebosugar pill that looks like sildenafil tablets | Drug | Placebo |
Primary outcome
6 Minute Walk Distance
Time frame: Weeks 1, 13
Change in distance walked between week 1 and week 13 were compared. The difference between the two time points is reported.
Cardiopulmonary Exercise Test Work Rate
Time frame: Weeks 1 and 13
Work rate (the amount of energy being expended to cycle) was assessed at weeks 1 and 13. The change in maximum work measured during CPET between weeks 1 and 13 is reported.
1 secondary outcome
Cystic Fibrosis Quality of Life-Revised Respiratory Domain Score
Time frame: Assessed at weeks 1 and 13
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 24 Jul 2019.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Background: PubMed 16217178Orenstein DM, Higgins LW. Update on the role of exercise in cystic fibrosis. Curr Opin Pulm Med. 2005 Nov;11(6):519-23. doi: 10.1097/01.mcp.0000181476.92810.07.
- Background: PubMed 15618583Pianosi P, Leblanc J, Almudevar A. Peak oxygen uptake and mortality in children with cystic fibrosis. Thorax. 2005 Jan;60(1):50-4. doi: 10.1136/thx.2003.008102.
- Background: PubMed 23069115Almajed A, Lands LC. The evolution of exercise capacity and its limiting factors in cystic fibrosis. Paediatr Respir Rev. 2012 Dec;13(4):195-9. doi: 10.1016/j.prrv.2012.01.001. Epub 2012 Feb 10.
- Background: PubMed 26119592Jiang K, Jiao S, Vitko M, Darrah R, Flask CA, Hodges CA, Yu X. The impact of Cystic Fibrosis Transmembrane Regulator Disruption on cardiac function and stress response. J Cyst Fibros. 2016 Jan;15(1):34-42. doi: 10.1016/j.jcf.2015.06.003. Epub 2015 Jun 25.
- Background: PubMed 16291984Galie N, Ghofrani HA, Torbicki A, Barst RJ, Rubin LJ, Badesch D, Fleming T, Parpia T, Burgess G, Branzi A, Grimminger F, Kurzyna M, Simonneau G; Sildenafil Use in Pulmonary Arterial Hypertension (SUPER) Study Group. Sildenafil citrate therapy for pulmonary arterial hypertension. N Engl J Med. 2005 Nov 17;353(20):2148-57. doi: 10.1056/NEJMoa050010.
- Background: PubMed 18950791Mourani PM, Sontag MK, Ivy DD, Abman SH. Effects of long-term sildenafil treatment for pulmonary hypertension in infants with chronic lung disease. J Pediatr. 2009 Mar;154(3):379-84, 384.e1-2. doi: 10.1016/j.jpeds.2008.09.021. Epub 2008 Oct 31.
- Background: PubMed 16479610Montgomery GS, Sagel SD, Taylor AL, Abman SH. Effects of sildenafil on pulmonary hypertension and exercise tolerance in severe cystic fibrosis-related lung disease. Pediatr Pulmonol. 2006 Apr;41(4):383-5. doi: 10.1002/ppul.20393.
- Background: PubMed 18006891Lubamba B, Lecourt H, Lebacq J, Lebecque P, De Jonge H, Wallemacq P, Leal T. Preclinical evidence that sildenafil and vardenafil activate chloride transport in cystic fibrosis. Am J Respir Crit Care Med. 2008 Mar 1;177(5):506-15. doi: 10.1164/rccm.200703-344OC. Epub 2007 Nov 15.
- Background: PubMed 25466700Taylor-Cousar JL, Wiley C, Felton LA, St Clair C, Jones M, Curran-Everett D, Poch K, Nichols DP, Solomon GM, Saavedra MT, Accurso FJ, Nick JA. Pharmacokinetics and tolerability of oral sildenafil in adults with cystic fibrosis lung disease. J Cyst Fibros. 2015 Mar;14(2):228-36. doi: 10.1016/j.jcf.2014.10.006. Epub 2014 Nov 13.
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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.
Jennifer L Taylor-Cousar, MD principal investigator
National Jewish Health
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1/2 study testing sildenafil in people with Cystic Fibrosis, run by National Jewish Health 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 21 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 24 Jul 2019. 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. Some participants in this study may receive a placebo. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this combined phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Phase 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
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 15 Jul 2019). 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?
6 Minute Walk Distance (time frame: Weeks 1, 13). The study lists 2 primary outcomes in all. 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 NCT02626182, which also lists 9 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 24 Jul 2019.