Terminated (This decision was made for business reasons only and is not related to any safety concerns regarding crisaborole.)

This study is a Phase 3, multicenter, open-label, long-term safety extension study of Studies C3291032 and C3291031 in Japanese pediatric and adult participants with mild to moderate Atopic Dermatitis (AD).

Inclusion Criteria:

• Male or female participants;
• Who were patients with mild to moderate AD aged 2 years old or older and met eligibility criteria for study C3291032 at the time when entering Study C3291032, and completed treatment period in Study C3291032 without safety issues. Or
• Who were patients with mild to moderate AD aged 1 months to <24 months and met eligibility criteria for Study C3291031 at the time when entering Study C3291031, and completed treatment period in Study C3291031 without safety issues

Exclusion Criteria:

• Has other medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behavior or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study.

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.

Pfizer has the right to review disclosures, requesting a delay of less than 60 days. Investigator will postpone single center publications until after disclosure of pooled data (all sites), less than 12 months from study completion/termination at all participating sites. Investigator may not disclose previously undisclosed confidential information other than study results.