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Completed

NCT Number: NCT02707640

A Study to Assess the Safety and Tolerability of N-Acetylcysteine When Administered With Pirfenidone to Participants With Idiopathic Pulmonary Fibrosis (IPF)

This is a Phase 2, randomized, double-blind, placebo-controlled safety and tolerability study of N-acetylcysteine or placebo in participants with mild to moderate idiopathic pulmonary fibrosis (IPF) receiving background pirfenidone therapy.

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Key information

Conditions

Idiopathic Pulmonary Fibrosis Lung Diseases Lung Diseases, Interstitial Pulmonary Fibrosis Respiratory Tract Diseases

Age range

40 year–80 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 2

Primary location

Graz, Austria

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Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Clinical symptoms consistent with IPF of >=3 months' duration (relative to Day 1)
  • Must have been on a dose of pirfenidone not less than 1602 mg/day for at least 8 weeks prior to randomization at Day 1
  • Able to understand the importance of adherence to study treatment and the study protocol and willing to follow all study requirements, including the concomitant medication restrictions, throughout the study
  • Women of childbearing capacity were required to have a negative serum pregnancy test before treatment and must have agreed to maintain highly effective contraception by practicing abstinence or by using at least two methods of birth control from the date of consent through the end of the study
  • Diagnosis of usual interstitial pneumonia (UIP) or IPF by high-resolution computed tomography (HRCT) and surgical lung biopsy. Previous HRCT scans, typically and if available, one at the point of time of diagnosis and one more recent, made during the last year before study inclusion, will be used and assessed by a central Reading Committee

Exclusion criteria

  • Significant clinical worsening of IPF between screening and Day 1 of study, in the opinion of the investigator
  • Unlikely to comply with the requirements of this study, in the opinion of the investigator
  • Patient-reported cigarette smoking within 3 months of screening or unwilling to avoid use of tobacco products throughout the study
  • History of clinically significant environmental exposure known to cause pulmonary fibrosis (PF), including but not limited to drugs (such as amiodarone), asbestos, beryllium, radiation, and domestic birds
  • Known cause of interstitial lung disease, including but not limited to radiation, drug toxicity, sarcoidosis, hypersensitivity pneumonitis, and cryptogenic organizing pneumonia
  • Clinical diagnosis of any connective tissue disease, including but not limited to scleroderma, polymyositis/dermatomyositis, systemic lupus erythematosus, and rheumatoid arthritis
  • Clinical evidence of active infection, including but not limited to bronchitis, pneumonia, sinusitis, urinary tract infection, or cellulitis (as a diffuse inflammation of connective tissue and or skin)
  • Any history of malignancy likely to result in significant disability or likely to require significant medical or surgical intervention within the next 6 months (relative to Day 1). This does not include minor surgical procedures for localized cancer (e.g., basal cell carcinoma, squamous skin carcinoma)
  • History of severe hepatic impairment or end-stage liver disease
  • History of end-stage renal disease requiring dialysis
  • History of unstable or deteriorating cardiac or pulmonary disease (other than IPF) within the previous 6 months (relative to Day 1)
  • Any condition that, in the opinion of the investigator, may have been significantly exacerbated by the known side effects associated with the administration of N-acetylcysteine taken as a single medication
  • Suspected intolerance, allergy, or hypersensitivity to pirfenidone or any of its components
  • Known intolerance, allergy, or hypersensitivity to N-acetylcysteine or any of its components

Treatment and study plan

Matching Placebo

Drug

Matching Placebo, oral administration, three times daily for 24 weeks.

N-acetylcysteine

Drug

N-acetylcysteine, 600 mg, oral administration, three times daily for 24 weeks.

pirfenidone

Drug

Pirfenidone, at least 1602 mg/day, oral administration, for 32 weeks, during the wash-out and screening period and for at least 8 weeks prior to randomization.

Primary outcomes

  1. Percentage of Participants With Dose Reductions

    Time frame: From baseline up to 24 weeks

    Percentage of participants with dose reductions in N-Acetylcysteine and placebo cohorts during the 24-week treatment period.

  2. Percentage of Participants With Early Treatment Discontinuations

    Time frame: From baseline up to 24 weeks

    Percentage of participants with early treatment discontinuations in N-Acetylcysteine and placebo cohorts during the 24-week treatment period.

  3. Percentage of Participants With Treatment-Emergent Adverse Events (TEAEs)

    Time frame: Until 28 days from last dose of study treatment (Week 28)

    An adverse event (AE) is defined as any untoward medical occurrence in a participant who is administered a study treatment regardless of whether or not the event has a causal relationship with the treatment. An AE, therefore, could be any unfavorable or unintended sign (including an abnormal laboratory finding), symptom, or disease temporally associated with the study treatment, whether or not related to the treatment.

  4. Percentage of Participants With Treatment-Emergent Serious Adverse Events (SAEs)

    Time frame: Until 28 days from last dose of study treatment (Week 28)

    A Serious Adverse Event (SAE) is any untoward medical occurrence that at any dose results in death, is life threatening, requires hospitalization or prolongation of hospitalization, or results in disability/incapacity, or congenital anomaly/birth defect.

  5. Percentage of Participants With Treatment-Emergent Adverse Events Resulting in Permanent Discontinuation of Study Treatment

    Time frame: Until 28 days from last dose of study treatment (Week 28)

  6. Percentage of Participants With Treatment-Emergent Deaths of All Causes

    Time frame: Until 28 days from last dose of study treatment (Week 28)

  7. Percentage of Participants With Treatment-Emergent Adverse Events That Led to Dose Reduction or Temporary Discontinuation of Study Treatment

    Time frame: Until 28 days from last dose of study treatment (Week 28)

Sponsors and collaborators

Lead sponsor

Hoffmann-La Roche

Industry

Registry information

Official study title

A Randomized, Double-Blind, Placebo-Controlled, Phase 2 Study of the Safety and Tolerability of N-Acetylcysteine in Patients With Idiopathic Pulmonary Fibrosis With Background Treatment of Pirfenidone

Important dates

Study start
2013
Primary completion
2015
Study completion
2015
First posted
Mar 14, 2016
Registry last updated
May 20, 2016

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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