| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated  | 
| Idiopathic pulmonary fibrosis | 
 
 
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| E.1.1.1 | Medical condition in easily understood language  | 
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| E.1.1.2 | Therapeutic area  | Diseases [C] - Respiratory Tract Diseases [C08] | 
| MedDRA Classification | 
| E.1.2 Medical condition or disease under investigation | 
| E.1.2 | Version  | 17.0 | 
 
| E.1.2 | Level  | PT | 
 
| E.1.2 | Classification code  | 10021240 | 
 
| E.1.2 | Term  | Idiopathic pulmonary fibrosis | 
 
| E.1.2 | System Organ Class  | 10038738 - Respiratory, thoracic and mediastinal disorders | 
 
 
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| E.1.3 | Condition being studied is a rare disease  |  No  | 
| E.2 Objective of the trial | 
| E.2.1 | Main objective of the trial  | 
- Change in pulmonary function (FVC% predicted) from baseline to week 52
 
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| E.2.2 | Secondary objectives of the trial  | 
- Change in diffusion capacity of the lung for carbon dioxide (DLco) 
 - Change in pulmonary function: annualized rate of change in FVC 
 - Progression-free survival 
 - Acute IPF exacerbations 
 - Change in quality of life measurement
 
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| E.2.3 | Trial contains a sub-study  |  No  | 
| E.3 | Principal inclusion criteria  | 
- Age > or equal to 40 years at Visit 1
 - Have a diagnosis of IPF based upon the ATS/ERS/JRS/ALAT consensus statement on IPF (Raghu et al. 2011) within the previous 5 years from time of screening and confirmed at baseline Have a central review assessment of HRCT performed during the screening period or < or equal to 12 months prior to the start of screening
 - Patients from countries where a treatment is licensed/approved for IPF must additionally meet at least one of the following criteria to be eligible;
 - Be unable to access a licensed therapy for IPF 
 - Treatment with a licensed therapy/therapies has been stopped for lack of efficacy or because of safety/tolerability reasons (a period of washout will be required; refer to Section 4.1.2)
 - Be unwilling to be treated with a licensed/approved therapy and after having reviewed all available treatment options, the investigator and patient consider enrollment into the study appropriate
 - FVC ≥ 40% and < or equal to 90% of predicted at screening
 - Stable baseline lung function as evidenced by a difference of < 10% in absolute FVC  measurements (in liters) between screening and Day 1/Visit 2 prior to randomization
 - DLco > or equal to 25% of predicted at screening
 - Adequate hematopoietic capacity, defined as the following:
 - Hemoglobin > 8.5 g/dL
 - ANC > or equal to 1000/microlitre
 - Platelet count > or equal to 75,000/microlitre
 - Adequate liver function, defined as the following: 
 - AST and ALT < or equal to 3 times the upper limit of normal (ULN) 
 - Total bilirubin < or equal to 1.5 x ULN or < 3 x ULN for patients with documented Gilbert syndrome 
 - Women of childbearing potential must use two methods of acceptable contraception including one highly effective method and a barrier method as directed by their physician during treatment for 7 months after completion of study treatment (or as per local requirement) 
 - Male patients must agree to remain abstinent or use a condom, even after a vasectomy, during sexual intercourse with female partners while being treated with vismodegib/placebo, and for 2 months after completion of study treatment. 
 - Agreement not to donate blood or blood products during the study and for at least 7 months (or as per local requirements) after the last dose of study treatment
 
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| E.4 | Principal exclusion criteria | 
- Prior treatment with vismodegib or any Hh pathway inhibitor
 - Evidence of other known causes of ILD 
 - Hospitalization due to an exacerbation of IPF within 4 weeks prior to, or during, screening
 - Lung transplant expected within 12 months of screening
 - Evidence of clinically significant lung disease other than IPF 
 - Substantial emphysema on HRCT with degree of emphysema greater than fibrosis 
 - Class IV New York Heart Association chronic heart failure or historical evidence of left ventricular ejection fraction < 35%
 - Known current malignancy or current evaluation for a potential malignancy
 - Known immunodeficiency, including but not limited to HIV infection
 
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| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| - Change in pulmonary function (FVC% predicted) | 
 
 
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| E.5.1.1 | Timepoint(s) of evaluation of this end point | 
| - from baseline to week 52  | 
 
 
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| E.5.2 | Secondary end point(s) | 
1. Change in DLco % predicted
 2. Annualized rate of change in FVC (liters)
 3. Progression free survival
 4. Acute IPF exacerbations
 5. Change in IPF-specific health-related quality of life  | 
 
 
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| E.5.2.1 | Timepoint(s) of evaluation of this end point | 
1. from baseline to week 52 
 2. from baseline to week 52
 3. from randomization to the first occurrence of any  of the following:
 • Death from any cause
 • Non-elective hospitalization from any cause
 • ≥10% decline in FVC (L) (relative change) from baseline
 4. from randomization to first event 
 5. from baseline to week 52  | 
 
 
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| E.6 and E.7 Scope of the trial | 
| E.6 | Scope of the trial | 
| E.6.1 | Diagnosis |  No  | 
| E.6.2 | Prophylaxis |  No  | 
| E.6.3 | Therapy |  No  | 
| E.6.4 | Safety |  Yes  | 
| E.6.5 | Efficacy |  Yes  | 
| E.6.6 | Pharmacokinetic |  Yes  | 
| E.6.7 | Pharmacodynamic |  Yes  | 
| E.6.8 | Bioequivalence |  No  | 
| E.6.9 | Dose response |  No  | 
| E.6.10 | Pharmacogenetic |  No  | 
| E.6.11 | Pharmacogenomic |  No  | 
| E.6.12 | Pharmacoeconomic |  No  | 
| E.6.13 | Others |  No  | 
| E.7 | Trial type and phase | 
| E.7.1 | Human pharmacology (Phase I) |  No  | 
| E.7.1.1 | First administration to humans |  No  | 
| E.7.1.2 | Bioequivalence study |  No  | 
| E.7.1.3 | Other |  No  | 
| E.7.1.3.1 | Other trial type description |  | 
| E.7.2 | Therapeutic exploratory (Phase II) |  Yes  | 
| E.7.3 | Therapeutic confirmatory (Phase III) |  No  | 
| E.7.4 | Therapeutic use (Phase IV) |  No  | 
| E.8 Design of the trial | 
| E.8.1 | Controlled |  Yes  | 
| E.8.1.1 | Randomised |  Yes  | 
| E.8.1.2 | Open |  No  | 
| E.8.1.3 | Single blind |  No  | 
| E.8.1.4 | Double blind  |  Yes  | 
| E.8.1.5 | Parallel group |  Yes  | 
| E.8.1.6 | Cross over  |  No  | 
| E.8.1.7 | Other |  No  | 
| E.8.2 |  Comparator of controlled trial | 
| E.8.2.1 | Other medicinal product(s) |  No  | 
| E.8.2.2 | Placebo  |  Yes  | 
| E.8.2.3 | Other |  No  | 
| E.8.2.4 | Number of treatment arms in the trial | 2 | 
| E.8.3 | 
                                The trial involves single site in the Member State concerned
                             |  No  | 
| E.8.4 |  The trial involves multiple sites in the Member State concerned  |  Yes  | 
| E.8.4.1 | Number of sites anticipated in Member State concerned | 4 | 
| E.8.5 | The trial involves multiple Member States |  Yes  | 
| E.8.5.1 | Number of sites anticipated in the EEA | 22 | 
| E.8.6 Trial involving sites outside the EEA | 
| E.8.6.1 | Trial being conducted both within and outside the EEA |  Yes  | 
| E.8.6.2 | Trial being conducted completely outside of the EEA |  No  | 
| E.8.6.3 | If E.8.6.1 or E.8.6.2 are Yes, specify the regions in which trial sites are planned | 
| Australia | 
 
| Chile | 
 
| France | 
 
| Germany | 
 
| Israel | 
 
| Italy | 
 
| Korea, Republic of | 
 
| Mexico | 
 
| New Zealand | 
 
| Peru | 
 
| Spain | 
 
| United States | 
 
 
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| E.8.7 | Trial has a data monitoring committee |  Yes  | 
| E.8.8 | 
                        Definition of the end of the trial and justification where it is not the last
                        visit of the last subject undergoing the trial
                     | 
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| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 2 | 
| E.8.9.1 | In the Member State concerned months | 3 | 
| E.8.9.1 | In the Member State concerned days |  | 
| E.8.9.2 | In all countries concerned by the trial years | 2 | 
| E.8.9.2 | In all countries concerned by the trial months | 3 |