Evaluation of ATx201 as a Topical Antibiotic Agent

Inclusion Criteria: General inclusion criteria: * Signed and dated informed consent has been obtained * Age 18 - 70 years * Male or female * Female subjects of childbearing potential must be confirmed not pregnant by a negative urine pregnancy test prior trial treatment * Female subjects of childbearing potential must be willing to use effective contraceptive at trial entry until completion * Male subjects must agree to use adequate contraception for the duration of the trial Additional inclusion criteria for Phase II of the study: * Localized disease (e.g. flexural eczema in a more or less symmetrical distribution on arms) where two individual lesions each covering an area between 10-200 cm2 and where each individual lesion has an investigators global assessment score between 1-3. * Additional localized lesion of area between 10-200 cm2 and where the individual lesion has an investigators global assessment score between 1-3. * Total localized disease not exceeding 20 % body surface area * Colonization of lesions with S.aureus as determined by cultivation General exclusion criteria * Clinically relevant abnormalities in the laboratory testing, vital signs, ECG ( Phase I only) or physical examination * Presence of any skin condition (scars, tattoos,…) that would interfere with the placement of study medication * History of irritation to topical products * Current acute or chronic disease unless considered clinically irrelevant by the Investigator * Relevant history of malignancy, of renal, hepatic, cardiovascular, respiratory, gastrointestinal, musculoskeletal, skin (particularly at the site of drug application), haematological, endocrine or neurological diseases that may interfere with the aim of the study * Positive HIV serology or evidence of active hepatitis * Ascertained or presumptive hypersensitivity to the active principle and/or formulations ingredients of the study drugs (test, reference) * History of drug or alcohol abuse (\>2 drinks/day, defined according to USDA Dietary Guidelines 2005) * caffeine (\>5 cups coffee/tea/day) or tobacco abuse (consumption of 5 or more cigarettes/week) * abnormal or special diet (e.g. vegetarian diet) * Blood donations during 6 weeks prior to this study or planned within 6 weeks after the last blood withdrawal * Subject considered unable or unlikely (per Investigator judgment) to comply with safety and PK profiling requirements (follow-up visits) * Subjects who are pregnant (as determined by a positive pregnancy test at the screening visit) or lactating * Participation in another clinical trial with an investigational day within 4 weeks before screening Additional exclusion criteria for Phase I of the study: * Regular use of medications * Use of any dermatological drug therapy on the arms within 14 days before day 1 of this study Additional exclusion criteria for Phase II of the study: * Treatment with antibiotics (systemic or topical) within the past 3 months and during the study * Treatment with drugs that affect the immune system within the past 3 months and during the study * Treatment with topical steroids and calcineurin inhibitors 1 week before and during the study treatment period * Treatment with systemic steroids within the past month and during the study * Use of disinfectant soaps within 1 week before screening and during the study treatment period