- Subjects must have, on the face at screening (physical examination of dermatologist): A minimum of 17 but not more than 60 inflammatory acne lesions (papules / pustules), including nasal lesions; and a minimum of 20 but not more than 150 non-inflammatory acne lesions (open / closed comedones), including nasal lesions. It is set to evaluate acne patients in the same degree of severity of Japanese Phase 3 study.