Monitoring Pregnancy and Infant Outcomes Following Tralokinumab Exposure During Pregnancy in the US and Canada - PROTECT

Inclusion Criteria:

Eligibility for the cohort study includes the following:

1. Currently pregnant at the time of enrollment

2. Reside in the US or Canada at the time of enrollment

3. Verbal informed consent to participate OTIS Pregnancy Registry

4. Current diagnosis of AD at the time of enrollment

Cohort 1: Tralokinumab-Exposed Cohort

1. Diagnosed with AD

2. Exposure to tralokinumab for any number of days, at any dose, and at any time duringpregnancy or within 16 weeks prior to the date of conception

3. Agree to the conditions and requirements of the study including the interviewschedule, dysmorphology exam (for the first 80 pregnancies resulting in live borninfants), developmental screening, and release of medical records

Cohort 2: AD Comparator I- Phototherapy or Systemic Treatment

1. Diagnosed with AD

2. Exposed to phototherapy and/or systemic therapy for the treatment of AD for anynumber of days, at any dose, and at any time within 5 half-lives prior to the dateof conception or during pregnancy

3. Agree to the conditions and requirements of the study including the interviewschedule, dysmorphology exam (for the first 80 pregnancies resulting in live borninfants), developmental screening, and release of medical records

Cohort 3: AD Comparator II - With or Without Treatment

1. Diagnosed with AD

2. May or may not have received treatment for AD, but have not been exposed to any doseof phototherapy or systemic therapy for the treatment of AD within 5 half-livesprior to the estimated date of conception or any time during pregnancy.

3. Agree to the conditions and requirements of the study including the interviewschedule, dysmorphology exam (for the first 80 pregnancies resulting in live borninfants), developmental screening, and release of medical records

Exclusion Criteria:

Pregnant women meeting any of the following criteria will not be included in the cohort study:

Cohort 1: Tralokinumab-Exposed Cohort

1. Women who have enrolled in the tralokinumab cohort study with a previous pregnancy

2. Exposure to any dose of methotrexate or mycophenolate mofetil within 5 half-livesprior to the estimated date of conception or anytime during pregnancy

3. Retrospective enrollment after the outcome of pregnancy is known (i.e., thepregnancy has ended prior to enrollment)

4. Results of a diagnostic test are positive for a major structural birth defect priorto enrollment. However, women who have had any normal or abnormal prenatal screeningor diagnostic test prior to enrollment are eligible as long as the test result doesnot indicate a major structural defect

Cohort 2: AD Therapy Comparator I- Phototherapy or Systemic Treatment

1. Pregnant women who have enrolled in the tralokinumab cohort study with a previouspregnancy

2. Exposure to any dose of tralokinumab, methotrexate or mycophenolate mofetil within 5half-lives prior to the estimated date of conception or anytime during pregnancy.

3. Retrospective enrollment after the outcome of pregnancy is known (i.e., thepregnancy has ended prior to enrollment)

4. Results of a diagnostic test are positive for a major structural defect prior toenrollment. However, women who have had any normal or abnormal prenatal screening ordiagnostic test prior to enrollment are eligible as long as the test result does notindicate a major structural defect

Cohort 3: AD Therapy Comparator II - With or Without Treatment

1. Pregnant women who have enrolled in the tralokinumab cohort study with a previouspregnancy

2. Exposure to any dose of tralokinumab, methotrexate or mycophenolate mofetil within 5half-lives prior to the estimated date of conception or anytime during pregnancy

3. Exposure to any dose of phototherapy and/or systemic therapy for the treatment of ADwithin 5 half-lives prior to the estimated date of conception or during pregnancy

4. Retrospective enrollment after the outcome of pregnancy is known (i.e., thepregnancy has ended prior to enrollment)

5. Results of a diagnostic test are positive for a major structural defect prior toenrollment. However, women who have had any normal or abnormal prenatal screening ordiagnostic test prior to enrollment are eligible as long as the test result does notindicate a major structural defect

Case-Series: Tralokinumab-Exposed Case Series

Pregnancies with tralokinumab exposure that do not meet the exposed cohort (Cohort 1) criteria will be excluded from the cohort, but will be included in the Exposure Series. Women who are eligible for enrollment in the Exposure Series include, but are not limited to the following: exposed to tralokinumab during pregnancy for an indication other than AD, women who enrolled with a previous pregnancy in the cohort, and retrospective reports of a tralokinumab-exposed pregnancy after the outcome of pregnancy is known. With informed consent, data will be collected from those enrolled in the Exposure Series from maternal interviews and medical record review using the same protocol as the cohort study to the extent possible.