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SPHERIC-1 (Sildenafil in the Chronic Obstructive Pulmonary Disease associated to Chronic Pulmonary Hypertension. Sixteen weeks long, multicentre, randomized, double blind study, in comparison with placebo, for the evaluation of sildenafil in the treatment of patients affected by pulmonary hypertension associated to COPD. - SPHERIC-1

SPHERIC-1 (Sildenafil in the Chronic Obstructive Pulmonary Disease associated to Chronic Pulmonary Hypertension. Sixteen weeks long, multicentre, randomized, double blind study, in comparison with placebo, for the evaluation of sildenafil in the treatment of patients affected by pulmonary hypertension associated to COPD. - SPHERIC-1

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2010-020917-97-IT
Enrollment
Unknown
Registered
2011-12-28
Start date
2010-06-23
Completion date
Unknown
Last updated
2013-10-14

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Moderate to severe pulmonary hypertension associated to moderate to mild COPD. MedDRA version: 14.1 Level: PT Classification code 10064911 Term: Pulmonary arterial hypertension System Organ Class: 10038738 - Respiratory, thoracic and mediastinal disorders MedDRA version: 14.1 Level: LLT Classification code 10010952 Term: COPD System Organ Class: 10038738 - Respiratory, thoracic and mediastinal disorders

Interventions

Pharmaceutical Form: Film-coated tablet INN or Proposed INN: Sildenafil Concentration unit: mg milligram(s) Concentration number: 20- Pharmaceutical form of the placebo: Film-coated tablet Route of ad

Sponsors

ASSOCIAZIONE ITALIANA PNEUMOLOGI OSPEDALIERI
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patient affected by stable COPD under optimal treatment, chronic oxygen therapy in patients with hypoxia, with PaO2 at rest = 60 mmHg and PaCO2= 55 mmHg, aged between 18 and 80 years old: • Group 1: BPCO GOLD I-III (post bronchodilator FEV1 = 30%, FEV1/FVC = 0,7 , TLC = 70%) + PAPm = 30 mmHg and PCP =65 years) yes F.1.3.1 Number of subjects for this age range

Exclusion criteria

Exclusion criteria: • Different types of pulmonary hypertension (chronic, thromboembolic pulmonary hypertension, pulmonary arterial hypertension etc.) • Significant left cardiac disease (LVEF <45%, cardiomyopathy, valvulopathy, unstable coronaropathy) • Treatment with nitrates in the last 10 days, or in need of other nitrate therapy for different diseases • Treatment with other specific drugs for arterial pulmonary hypertension (less than 4 weeks) • Significant systemic disease other than COPD • Recent reacutization of chronic bronchitis (< 4 weeks) • Pregnancy or breastfeeding, or women without an adequate contraceptive method for the whole study duration • History of anaphylaxys or allergic reactions to 5-phosphodiesterase inhibitors • Cancers within the last 5 years with the exception of localized cancers of the skin or of the cervix • Hepatic insufficiency or chronic renal failure or hemoglobinemia < 10 g/dL during the screening phase • Contraindications to subministration as per SPC • Mental disorder, alcohol abuse, chronic alcoholism, drug abuse • Subjects unable to sign the informed consent form • Subjects unable to walk

Design outcomes

Primary

MeasureTime frame
Main Objective: Demonstrate the superiority of sildenafil (20 mg tid) compared to placebo in the reduction of the pulmonary vascular resistance after 16 weeks of treatment.;Secondary Objective: Evaluation of sildenafil safety profile in comparison to placebo. Evaluation of sildenafil effect on the exercise capacity, symptoms and quality of life in comparison to placebo.;Primary end point(s): Significant reduction of basal pulmonary vascular resistance at rest, after 16 weeks of treatment with sildenafil compared with placebo.

Countries

Italy

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026