Please select the eligibility criteria that correspond to the clinical trial below.
Title: Dose Response of FENO to Inhaled Steroids in Mild-to-moderate Asthma
Brief Summary: Asthma is a chronic disease, which means that it cannot be cured, but the investigators can use inhalers and tablets to control the symptoms. In asthma, the airways become inflamed and irritated which can cause coughing and make the airways tighten. This 'inflammation' is the root of the problem in asthma. Doctors have different ways to measure the inflammation in the airways. One way is to measure a gas called nitric oxide (NO) on the breath. This is made by the lungs when asthmatic inflammation is present. The investigators have been using NO as a test in research labs for many years, but there are still unanswered questions about how it changes between morning and night and how quickly medicines work on it. In most asthmatics, even small doses of inhaled steroids (preventers) can reduce the NO levels to normal, but in some people this does not seem to happen. The investigators now have portable NO machines that are designed for patients to use in the home. The investigators want to follow NO readings in patients with high levels to measure how they respond to different doses of steroid inhalers. The investigators hope this will help the investigators better understand asthma inflammation and treatments.


Options:
A: Inclusion Criteria:

* Male or female children, aged 6-14 years
* A documented history of asthma for a period of at least 6 months
* Mild to severe persistent asthma according to GINA guidelines
* A documented history of allergic sensitization (positive skin prick test or specific IgE
* Subject's guardian/parent should be able to complete a symptom score on behalf of the subject.
* Subject's guardian/parent should be able to send a symptom score weekly by sms
* Both parents have to give written informed consent to participate in the study

Exclusion Criteria:

* Received any investigational study medication in the 4 weeks prior to screening Visit
* Significant comorbidity such as concurrent infection, history of prematurity, history of bronchopulmonary dysplasia, cystic fibrosis, other chronic lung diseases, and other severe chronic diseases
* Acute asthma exacerbation within 4 weeks of screening visit
* Hospitalization within 12 weeks of screening visit
* Systemic corticosteroids within 12 weeks of screening visit
* Oral corticosteroid dependence
B: Inclusion Criteria for BASALT and TALC Studies:

* Clinical history consistent with asthma
* Forced expiratory volume in one second (FEV1) greater than 40% of predicted value
* Asthma confirmed by one of the following two criteria:

  1. Beta-agonist reversibility to 4 puffs albuterol of at least 12% OR
  2. Methacholine provocative concentration at 20% (PC20) FEV1 of 8 milligrams per millimeter (mg/mL) or less when not on an inhaled corticosteroid, or 16 mg/mL or less when on an inhaled corticosteroid
* Need for daily controller therapy (i.e., inhaled corticosteroids, leukotriene modifiers, and/or long-acting beta-agonists) based on one or more of the following criteria:

  1. Received prescription for or used asthma controller within the 12 months prior to study entry OR
  2. Experienced symptoms for more than twice a week and not on asthma controller
* If on inhaled steroids (any drug at any dose not exceeding the equivalent of 1000 micrograms (mcg) of fluticasone daily), participant must have been on a stable dose for at least 2 weeks prior to study entry
* Non-smoker (i.e., total lifetime smoking history less than 10 pack-years; no smoking for at least 1 year prior to study entry)
* Willing to use an effective form of birth control throughout the study

Inclusion Criteria for BASALT Study:

* Ability to measure peak expiratory flow (PEF) each morning using the electronic peak flow meter (EPFM) device and to accurately transcribe the PEF measurements onto the diary cards at least 75% of the time during the last 2 weeks of the adherence testing period
* 75% compliance with recording peak flow measurements and symptoms in a symptom diary during the last 2 weeks of the adherence testing period
* Ability to take Inhalers A, B, and C at least 75% of scheduled doses; 75% compliance per inhaler is required
* No treatment failure (includes significant asthma exacerbation) within the last 4 weeks

Exclusion Criteria for BASALT and TALC Studies:

* Lung disease other than asthma, including chronic obstructive pulmonary disease (COPD) and chronic bronchitis
* Established or suspected diagnosis of vocal cord dysfunction
* Significant medical illness other than asthma
* History of respiratory tract infection within the 4 weeks prior to study entry
* History of a significant exacerbation of asthma within the 4 weeks prior to study entry
* History of life-threatening asthma requiring treatment with intubation and mechanical ventilation in the 5 years prior to study entry
* Hyposensitization therapy other than an established maintenance regimen
* Inability to coordinate use of the delivery devices used in the study, based on the opinion of the investigator or clinical coordinator
* Pregnant

Exclusion Criteria for BASALT Study:

* Inability to coordinate use of the medication delivery devices used in the study, based on the opinion of the investigator or clinical coordinator
C: Inclusion Criteria:

* Diagnosis os asthma, taking 200-1000mcg budesonide or equivalent per day
* FENO greater than 30ppb on treatment

Exclusion Criteria:

* Recent RTI or prednisolone
* Smoking within 1 year or 10 pack years
* ABPA, COPD, bronchiectasis
D: Inclusion Criteria:

* Clinical diagnosis of asthma made by a doctor over a year prior to study entry OR symptoms have been present more than a year if the diagnosis was made less than a year prior to study entry
* Have symptoms consistent with persistent asthma OR have evidence of uncontrolled disease. More information on this criterion can be found in the DAIT ICAC-01 protocol.
* Currently reside in a pre-selected area containing at least 20% of households below the U.S. government poverty level
* Do not smoke and have not used smokeless tobacco products in the year prior to study entry
* Able to perform eNO measurement procedures and spirometry at study screening
* Parent or guardian willing to provide informed consent, if applicable
* History of clinical varicella (chicken pox) or have received varicella vaccine
* Planning to stay in the area for the next 12 months
* Primary language is English. Spanish speakers may enroll at centers with Spanish-speaking staff.
* Parent or guardian primarily speaks English (or Spanish at centers with Spanish-speaking staff), for participants with parent or guardian providing informed consent
* Willing to allow the study physician to manage disease for the duration of the study
* Willing to change asthma medications in order to follow the protocol

Exclusion Criteria:

* Adherence to controller medication between Visits 1 and 2 is less than 25%. More information on this criterion can be found in the DAIT ICAC-01 protocol.
* Determined to have mild intermittent asthma at Visit 1
* Have had a life-threatening asthma exacerbation requiring intubation, mechanical ventilation, or resulting in a hypoxic seizure in the 5 years prior to study entry
* Have significant medical illnesses other than asthma. More information on this criterion can be found in the DAIT ICAC-01 protocol.
* Unable to use a metered-dose inhaler for administration of a beta-agonist rescue medication or a dry powder inhaler for the administration of asthma controller regimens
* Known hypersensitivity to any medications commonly used for the treatment of asthma
* Have not completed a home evaluation within 4 weeks of study screening
* Currently participating in another asthma-related drug or intervention study, or have participated in another asthma-related drug or intervention study in the month prior to study entry
* Does not sleep at least 4 nights per week in one home
* Lives with a foster parent (not applicable if patient is able to provide informed consent)
* Does not have access to a phone
* Requires certain medications. More information on this criterion can be found in the DAIT ICAC-01 protocol.
* Urine cotinine level above 100 ng/ml at study screening
* Pregnant or breastfeeding

Answer: C