Please select the eligibility criteria that correspond to the clinical trial below.
Title: A Phase II, Double Blind, Exploratory, Parallel-group, Placebocontrolled Clinical Study to Assess Two Dosing Regimens of GSK2402968 for Efficacy, Safety, Tolerability and Pharmacokinetics in Ambulant Subjects With Duchenne Muscular Dystrophy
Brief Summary: The purpose of this study is to determine whether GSK2402968 given as a continuous dose and as an intermittent dose is effective and safe in the treatment of Duchenne muscular dystrophy.


Options:
A: Inclusion Criteria:

* Duchenne muscular dystrophy patients of all ages
* Null mutation of the dystrophin gene or muscle with \<5% dystrophin
* Doppler echocardiogram with ejection fraction (EF) \<55% within 30 days of enrollment
* Ability to cooperate for testing
* Glucocorticoid treatment acceptable including daily or weekend administration of prednisone or deflazacort

Exclusion Criteria:

* Patients with EF 55% or greater
* Patients with EF \<40% after washout
* Patients taking \>5 mg lisinopril, or \>25 mg losartan or \>5 mg enalapril
* Skeletal deformities or pulmonary anatomical variants that preclude consistent measures of Doppler echocardiography
B: Inclusion Criteria:

* Ambulant subjects with Duchenne muscular dystrophy resulting from a mutation in the DMD gene, confirmed by a state-of-the-art DNA diagnostic technique covering all DMD gene exons, including but not limited to MLPA (Multiplex Ligation-dependent Probe Amplification), CGH (Comparative Genomic Hybridisation) or H-RMCA (High-Resolution Melting Curve Analysis), and correctable by GSK2402968-induced DMD exon 51 skipping,
* Males, at least 5 years of age and with a life expectancy of at least 1 year
* Able to rise from floor in ≤7 seconds (without aids/orthoses),
* Able to complete the 6MWD test with a distance of at least 75m
* Receiving glucocorticoids for a minimum of 6 months immediately prior to screening, with no significant change in total daily dosage or dosing regimen for a minimum of 3 months immediately prior to screening and a reasonable expectation that total daily dosage and dosing regimen will not change significantly for the duration of the study
* QTc \<450msec
* On adequate contraception
* Able to comply with and complete all protocol requirements

Exclusion Criteria:

* any additional missing exon for DMD
* Current of history of liver or renal disease or impairment
* Acute illness within 4 weeks of the first dose
* Use of prohibited meds within 6 months of fist dose
* Current participation in any other investigational clinical trial
* Positive hepatitis B surface antigen, hepatitis C antibody test, or human immunodeficiency virus (HIV) test at screening
* Symptomatic cardiomyopathy
* Children in Care
C: Inclusion Criteria:

1. DBMD as determined by either a skeletal muscle biopsy demonstrating absence or lack of dystrophin, and/or genetic testing showing a mutation in the dystrophin gene predictive of DBMD, as well as a consistent physical examination
2. Male gender
3. Age greater than or equal to 18 years
4. Cardiac dysfunction with ejection fraction less than or equal to 50% as determined by echocardiogram, cardiac MRI, or multi-gated acquisition (MUGA) scan
5. On a stable dose of ACE-inhibitor or angiotensin receptor blocker (ARB) for at least 3 months; beta-adrenergic receptor blockers and glucocorticosteroids are not required but if used, a stable dose for at least 3 months is required.
6. Ability of the subject or legal guardian to provide informed consent
7. Ability to adhere with study follow-up
8. Willingness to abstain from food and alcohol for 8 hours prior to FMD

Exclusion Criteria:

1. Use of nitrates or alpha-adrenergic receptor blockers
2. Known intolerance or allergy to sildenafil, or a history of any severe allergic or anaphylactic reactions
3. Any medical or psychosocial condition, which, in the view of the study investigator, makes study participation inadvisable
4. Known hereditary retinal disorder such as retinitis pigmentosa
5. History of priapism or conditions that may predispose to priapism such as sickle cell anemia, multiple myeloma, or leukemia
6. Bleeding disorders
7. Active tobacco use
8. Chronic atrial fibrillation or frequent arrhythmia that would result in an irregular pulse
9. Factors that would preclude obtaining an MRI study - (e.g. implantable pacemaker or cardioverter-defibrillator; body habitus cannot fit into scanner)
10. Systolic blood pressure (SBP) less than 85 mmHg at baseline evaluation
11. Chronic kidney disease stages 4 and 5: GFR\< 30 mL/min/1.73 m2 as determined by serum cystatin C level and the equation eGFRcys = 76.7 x (serum cystatin C-1.18)
12. Current use of sildenafil.
D: Inclusion Criteria:

* DMD patients age 7 years and older (and able to complete cardiac MRI without sedation) with preserved left ventricular (LV) systolic function and abnormal heart muscle by late post-gadolinium imaging (LGE)

Exclusion Criteria:

* renal insufficiency (GFR \<40 mL/min/m2)
* non-MR compatible implants (e.g. neurostimulator, AICD)
* severe claustrophobia
* allergy to gadolinium contrast
* prior use of or known allergy to epleronone
* use of potassium-sparing diuretics
* serum potassium level of \>5.0 mmol/L

Answer: B