A Study to Learn About the Study Medicine (PF-06823859) in Adults With Active CLE or SLE With Skin Symptoms.

Change from baseline GS was calculated as GS(t) - GS(0), where GS(t) was the gene signature score at Week 12 and GS(0) was the gene signature score at Baseline, where the GS(t) was calculated as the mean of log2 transformed counts per million reads from each of 13 genes in RNAseq, the higher GS indicated coordinated higher expression. There is no minimum/maximum limit to the GS score. Gene expression was quantified using RNA sequencing and summarized as log2-transformed counts per million mapped reads [log2(CPM)]. Higher values indicate higher normalized gene expression and without a bounded scale or defined minimum or maximum value.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease. Percentage of participants with >=50 percent reduction in CLASI-A score at the specified timepoints was reported in this outcome measure. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease. Percentage of participants with >=4 points reduction in CLASI-A score at the specified timepoints was reported in this outcome measure. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

CLASI-A measures erythema and scaling or hypertrophy in thirteen skin regions. CLASI-A scores ranges from 0 to 70, with higher scores indicating more severe skin disease. Percentage of participants with >=7 points reduction in CLASI-A score at the specified timepoints was reported in this outcome measure. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

PhGA score was assigned by physician as the number within the 0 to 100 millimeter range on visual assessment scale and provided a global characterization of disease. Higher scores indicating more severe disease. Participants receiving PF-06823859 continued Q4W then Q8W treatment, while both participants receiving placebo switched to PF-06823859 at Week 16. Results are reported by treatment sequence to reflect protocol pathways and maintained the initial randomized comparison.

Laboratory test included activated partial thromboplastin time prolonged, alanine aminotransferase increased, alkaline phosphatase increased, anemia, aspartate aminotransferase increased, blood bilirubin increased, creatine phosphokinase (CPK) increased, cholesterol high, creatinine increased, hemoglobin increased, hypercalcemia, hyperkalemia, hypernatremia, hypertriglyceridemia, hypoalbuminemia, hypocalcemia, hypoglycemia, hypokalemia, hyponatremia, international normalized ratio (INR) increased, leukocytosis, lymphocyte count decreased, lymphocyte count increased, neutrophil count decreased, platelet count decreased and white blood cell decreased. Laboratory test abnormalities were graded according to CTCAE v5.0; grade 3=severe, grade 4=life-threatening consequences and grade 5=death. Participants with any laboratory abnormalities of CTCAE v5.0 grade 3 or more were reported in this outcome measure.

Vital signs included systolic blood pressure (SBP), diastolic blood pressure (DBP) and pulse rate (PR). Clinically significant vital signs abnormalities were based on investigator's decision.

ECG parameters included PR interval, QRS duration and QT interval using Fridericia's formula (QTcF) interval. Clinically significant abnormalities in ECG parameters were based on investigator's decision.

An adverse event (AE) was any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. TEAEs were the AEs with onset dates on or after the start of the study intervention up to after last dose of study intervention. An serious adverse event (SAE) was defined as any untoward medical occurrence that, at any dose, met one or more of the following criteria: resulted in death, was life-threatening, required inpatient hospitalization or prolongation of existing hospitalization, resulted in persistent or significant disability/incapacity, was a congenital anomaly/birth defect or any other pre-specified criteria in protocol of the study or other important medical events. AEs included SAEs (if occurred) and all other AEs (including non-SAEs).