Efficacy and Safety Study of Apremilast (CC-10004) in Pediatric Subjects From 6 Through 17 Years of Age With Moderate to Severe Plaque Psoriasis

The sPGA is the assessment by the Investigator of the overall disease severity of plaque psoriasis at the time of evaluation. The sPGA is a 5-point scale ranging from 0 (clear) to 4 (severe), incorporating an assessment of the severity of the three primary signs of the disease: erythema, scaling and plaque elevation. The results presented are for the percentage of participants with a sPGA response. An sPGA response was defined as a score of clear (0) or almost clear (1) with at least a 2-point reduction from baseline at Week 16.

The Psoriasis Area Severity Index (PASI) is a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. The PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. The results presented are for the percentage of participants with PASI-75. PASI-75 was defined as at least a 75% reduction in PASI score from baseline.

The PASI is a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. The PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. The results presented are for the percentage of participants with PASI-50. PASI-50 was defined as at least a 50% reduction in PASI score from baseline.

The PASI is a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. The PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Positive percentage change from baseline scores indicate a worsening of disease severity, and negative percentage change from baseline scores indicate an improvement in disease severity.

BSA is a measurement of involved skin of the whole body affected by psoriasis, which ranges from 0% to 100%. Positive percentage change from baseline indicates that a greater BSA was affected by psoriasis. A negative percentage change from baseline indicates that a lesser BSA was affected by psoriasis.

The CDLQI is designed to measure the impact of skin disease on children's quality of life. The CDLQI measures how much the participant's psoriasis has affected them over the last week, and includes 10 questions with possible answers ranging from not at all (score of 0) to very much (score of 3). The CDLQI total score ranged from 0 (no effect on the participant's life) to 30 (extremely large effect on the participant's life). The results presented are for the percentage of participants who achieved a total CDLQI score of 0 or 1 at Week 16.

The CDLQI is designed to measure the impact of skin disease on children's quality of life. The CDLQI measures how much the participant's psoriasis has affected them over the last week, and includes 10 questions with possible answers ranging from not at all (score of 0) to very much (score of 3). The CDLQI total score ranged from 0 (no effect on the participant's life) to 30 (extremely large effect on the participant's life). A positive change from baseline score indicates that a participant's quality of life has worsened. A negative change from baseline score indicates that a participant's quality of life has improved.

An adverse event (AE) was defined as any noxious, unintended, or untoward medical occurrence that may appear or worsen in a participant during the course of the study. A TEAE is any AE that occurred after first dose of the investigational product.

An AE was defined as any noxious, unintended, or untoward medical occurrence that may appear or worsen in a participant during the course of the study. A TEAE is any AE that occurred after first dose of the investigational product.

A TESAE is any AE occurring at any dose after first dose that results in death, is life-threatening (ie, in the opinion of the Investigator, the participant is at immediate risk of death from the AE), requires inpatient hospitalization or prolongation of existing hospitalization (hospitalization is defined as an inpatient admission, regardless of length of stay), results in persistent or significant disability/incapacity (a substantial disruption of the participant's ability to conduct normal life functions), is a congenital anomaly/birth defect, or constitutes an important medical event.

A TESAE is any AE occurring at any dose after first dose that results in death, is life-threatening (ie, in the opinion of the Investigator, the participant is at immediate risk of death from the AE), requires inpatient hospitalization or prolongation of existing hospitalization (hospitalization is defined as an inpatient admission, regardless of length of stay), results in persistent or significant disability/incapacity (a substantial disruption of the participant's ability to conduct normal life functions), is a congenital anomaly/birth defect, or constitutes an important medical event.

A TREAE is any AE that is determined by the Investigator to have a possibly causal relationship to the investigational product.

A TREAE is any AE that is determined by the Investigator to have a possibly causal relationship to the investigational product.

Diarrhea was defined as having 3 or more liquid or watery stools in a day. Participants and their parent/guardian were supplied with diaries (either paper or electronic) that were filled out daily to record and describe any diarrhea and associated symptoms.

Diarrhea was defined as having 3 or more liquid or watery stools in a day. Participants and their parent/guardian were supplied with diaries (either paper or electronic) that were filled out daily to record and describe any diarrhea and associated symptoms.

Diarrhea symptoms were nausea, vomiting, abdominal cramps, abdominal pain, fever, bloating, and other symptoms. Participants and their parent/guardian were supplied with diaries (either paper or electronic) that were filled out daily to record and describe any diarrhea and associated symptoms.

Diarrhea symptoms were nausea, vomiting, abdominal cramps, abdominal pain, fever, bloating, and other symptoms. Participants and their parent/guardian were supplied with diaries (either paper or electronic) that were filled out daily to record and describe any diarrhea and associated symptoms.

The C-SSRS is a questionnaire that is used to assess suicidal ideation and behavior. The C-SSRS questionnaire measures suicidal ideation, intensity of ideation, and suicidal behaviors. Results presented are for the number of participants who recorded suicidal ideation or behavior on the C-SSRS.

The C-SSRS is a questionnaire that is used to assess suicidal ideation and behavior. The C-SSRS questionnaire measures suicidal ideation, intensity of ideation, and suicidal behaviors. Results presented are for the number of participants who recorded suicidal ideation or behavior on the C-SSRS.

The Tanner Staging of sexual development is a scale of physical development as children transition into adolescence and then adulthood. The scale defines physical measurements of development based on characteristics, such as the size of the breasts, genitals, testicular volume, and growth of pubic hair. The scale ranges from stage I (pre-adolescent) to stage V (adult development). The results presented are for the number of participants at stage I-V of development.

The Tanner Staging of sexual development is a scale of physical development as children transition into adolescence and then adulthood. The scale defines physical measurements of development based on characteristics, such as the size of the breasts, genitals, testicular volume, and growth of pubic hair. The scale ranges from stage I (pre-adolescent) to stage V (adult development). The results presented are for the number of participants at stage I-V of development.

The participants' body weight in kilograms (kg) was recorded.

The participants' body weight in kilograms (kg) was recorded.

The participants' height in centimeters (cm) was recorded.

The participants' height in centimeters (cm) was recorded.

The participants' BMI was calculated as body weight (kg)/height (m^2).

The participants' BMI was calculated as body weight (kg)/height (m^2).

A psoriasis flare was defined as a sudden intensification of psoriasis (new generalized erythrodermic, inflammatory or pustular psoriasis) requiring medical intervention beyond allowable medications.

A psoriasis flare was defined as a sudden intensification of psoriasis (new generalized erythrodermic, inflammatory or pustular psoriasis) requiring medical intervention beyond allowable medications.

A psoriasis rebound was defined as an adverse event of psoriasis that started after the last dose date for participants who received treatment in the study.