| E.1 Medical condition or disease under investigation | 
| E.1.1 | Medical condition(s) being investigated | 
| Uncontrolled asthma despite the use of an inhaled corticosteroid and a second controller medication.
 |  | 
| E.1.1.1 | Medical condition in easily understood language | 
| Uncontrolled asthma despite daily therapy. |  | 
| 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 | 14.1 |  
| E.1.2 | Level | PT |  
| E.1.2 | Classification code | 10003553 |  
| E.1.2 | Term | Asthma |  
| E.1.2 | System Organ Class | 10038738 - Respiratory, thoracic and mediastinal disorders |  | 
| 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 | 
| • The efficacy of lebrikizumab compared with placebo as measured by the rate of exacerbations • The safety of lebrikizumab compared with placebo
 • Periostin as a predictive biomarker (diagnostic)
 • The efficacy and safety of different dose levels of lebrikizumab compared to placebo.
 |  | 
| E.2.2 | Secondary objectives of the trial | 
| The efficacy of lebrikizumab compared with placebo with respect to lung function, time to first exacerbation, fractional exhaled nitric oxide (FeNO), asthma-specific health-related quality of life, rescue medication use (i.e. short-acting β-agonists [SABA]), and health care utilization. |  | 
| E.2.3 | Trial contains a sub-study | No | 
| E.3 | Principal inclusion criteria | 
| - Ability and willingness to provide written informed consent and to comply with the study protocol - 18–75 years old at screening
 - Asthma diagnosis for ≥ 12 months prior to the start of screening
 - Bronchodilator response (defined as a minimum 12% relative improvement in the volume of FEV1 after bronchodilator administration)  during the screening period
 - Pre-bronchodilator FEV1 40%–80% of predicted
 - On ICS (500-2000 µg/day of fluticasone propionate DPI or equivalent, total daily dose) for ≥ 6 months prior to the start of screening
 - On an eligible second controller medication for 6 months prior to the start of screening
 - Uncontrolled asthma demonstrated during the screening period
 - Chest X-ray or computed tomography (CT) scan obtained within 12 months prior to screening or chest X-ray during the screening period confirming the absence of other lung disease
 - Demonstrated adherence with controller medication during the screening period.
 
 |  | 
| E.4 | Principal exclusion criteria | 
| - History of a severe allergic reaction or anaphylactic reaction to a biologic agent - Daily or alternate day oral corticosteroid maintenance therapy within the 3 months prior to screening
 - Treatment with systemic corticosteroids within the 4 weeks prior to, or at anytime during the screening period
 - Recent major episode of infection
 - Active parasitic infection or Listeria monocytogenes infection within the 6 months prior to screening
 - Active tuberculosis requiring treatment within the 12 months prior to screening
 - Known immunodeficiency, including, but not limited to, HIV infection
 - Evidence of acute or chronic hepatitis or known liver cirrhosis
 - History of cystic fibrosis, chronic obstructive pulmonary disease, and/or other clinically significant lung disease other than asthma
 - Known current malignancy or current evaluation for a potential malignancy
 - Other clinically significant medical disease that is uncontrolled despite treatment or that is likely, in the opinion of the investigator, to require a change in therapy or impact the ability to participate in the study
 - History of alcohol, drug, or chemical abuse
 - Current smoker (cigarettes, pipe, cigar, or marijuana) or former smoker with a smoking history of > 10 pack-years
 - Current use of an immunomodulatory/immunosuppressive therapy or past use within 3 months or 5 drug half-lives (whichever is longer) prior to screening
 - Use of a biologic therapy including omalizumab (Xolair) at any time during the 6 months prior to screening
 - Use of zileuton (ZYFLO) or roflumilast (Daxas, Daliresp) at any time during the 6 months prior to screening
 - Treatment with an investigational agent within 30 days of screening (or 5 half lives of the investigational agent, whichever is longer)
 - Receipt of a live/attenuated vaccine within the 4 weeks prior to sreening
 - Female patients who are pregnant or lactating or unwilling to use a highly effective method of contraception
 - Body mass index  > 38 kg/m2
 - Body weight  < 40 kg.
 |  | 
| E.5 End points | 
| E.5.1 | Primary end point(s) | 
| Rate of asthma exacerbations. |  | 
| E.5.1.1 | Timepoint(s) of evaluation of this end point |  | 
| E.5.2 | Secondary end point(s) | 
| • Frequency of adverse events during the 52-week placebo-controlled period • Severity of adverse events during the 52-week placebo-controlled period
 • Incidence of anti-therapeutic antibodies during the study relative to the incidence at baseline
 • Frequency and severity of adverse events during the 52-week active-treatment extension and during the 24-week safety follow-up period.
 |  | 
| E.5.2.1 | Timepoint(s) of evaluation of this end point |  | 
| 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) | No | 
| E.7.3 | Therapeutic confirmatory (Phase III) | Yes | 
| 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 | 4 | 
| 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 | 62 | 
| 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 | 
| Argentina |  
| Australia |  
| Brazil |  
| Bulgaria |  
| Canada |  
| Chile |  
| China |  
| Colombia |  
| Czech Republic |  
| France |  
| Germany |  
| Hungary |  
| India |  
| Israel |  
| Italy |  
| Japan |  
| Korea, Republic of |  
| Mexico |  
| Peru |  
| Poland |  
| Russian Federation |  
| Slovakia |  
| South Africa |  
| Spain |  
| Turkey |  
| Ukraine |  
| United Kingdom |  
| United States |  | 
| 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 | 
| The end of the study is defined as the date when the last patient, last visit (LPLV) occurs. The LPLV is expected to occur a maximum of 124 weeks after the last patient is enrolled and randomized into the study. This timeframe includes the 52-week placebo-controlled period and a maximum of an additional 52-week active-treatment extension followed by the safety follow-up
 period. All patients will be followed for safety for 24 weeks after the last dose of study treatment.
 |  | 
| E.8.9 Initial estimate of the duration of the trial | 
| E.8.9.1 | In the Member State concerned years | 4 | 
| E.8.9.1 | In the Member State concerned months | 0 | 
| E.8.9.1 | In the Member State concerned days | 0 | 
| E.8.9.2 | In all countries concerned by the trial years | 4 | 
| E.8.9.2 | In all countries concerned by the trial months | 0 | 
| E.8.9.2 | In all countries concerned by the trial days | 0 |