Phase 2a Study to Assess the Efficacy,Safety and Tolerability of GIA632 in Adult Participants With Moderate to Severe Atopic Dermatitis

Key Inclusion Criteria: * Able and willing to sign the informed consent form * Patients with a diagnosis of atopic dermatitis and disease for at least 1 year * Moderate to severe atopic dermatitis Key Exclusion Criteria: * Participants with a clinically significant medical condition or infectious disease (as specified in the protocol) * Participants with any clinically significant abnormal clinical laboratory tests, vital signs, physical examination or ECG * Participant with any other active inflammatory skin disease would interfere with the appropriate assessment of atopic dermatitis in the opinion of the investigator * Participants with any chronic, uncontrolled medical condition, which would put the participant at increased risk during the study (e.g., uncontrolled: diabetes, hypertension) * Participants with any clinically unstable disease states that would likely require systemic corticosteroids (e.g., uncontrolled asthma) * Women of childbearing potential unless they are using highly effective methods of contraception (failure rate \< 1% per year) while taking study treatment. Other protocol-defined inclusion/exclusion criteria may apply.