Apremilast

12.1 Mechanism of Action Apremilast is an oral small molecule inhibitor of phosphodiesterase 4 (PDE4) specific for cyclic adenosine monophosphate (cAMP). PDE4 inhibition results in increased intracellular cAMP levels. The specific mechanism(s) by which apremilast exerts its therapeutic action is not well defined.

1 INDICATIONS AND USAGE OTEZLA/OTEZLA XR, an inhibitor of phosphodiesterase 4 (PDE4), is indicated for the treatment of: Adult patients with: Active psoriatic arthritis ( 1.1 ) Plaque psoriasis who are candidates for phototherapy or systemic therapy ( 1.2 ) Oral ulcers associated with Behçet's Disease ( 1.3 ) Pediatric patients 6 years of age and older with: Active psoriatic arthritis ( 1.1 ) Moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy ( 1.2 ) In the pediatric population, OTEZLA is indicated for patients weighing at least 20 kg, and OTEZLA XR is indicated for patients weighing at least 50 kg. 1.1 Psoriatic Arthritis OTEZLA is indicated for the treatment of adult patients and pediatric patients 6 years of age and older and weighing at least 20 kg with active psoriatic arthritis. OTEZLA XR is indicated for the treatment of adult patients and pediatric patients 6 years of age and older and weighing at least 50 kg with active psoriatic arthritis. 1.2 Plaque Psoriasis OTEZLA/OTEZLA XR is indicated for the treatment of adult patients with plaque psoriasis who are candidates for phototherapy or systemic therapy. OTEZLA is indicated for the treatment of pediatric patients 6 years of age and older and weighing at least 20 kg with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy. OTEZLA XR is indicated for the treatment of pediatric patients 6 years of age and older and weighing at least 50 kg with moderate to severe plaque psoriasis who are candidates for phototherapy or systemic therapy. 1.3 Oral Ulcers Associated with Behçet's Disease OTEZLA/OTEZLA XR is indicated for the treatment of adult patients with oral ulcers associated with Behçet's Disease.

2 DOSAGE AND ADMINISTRATION To reduce the risk of gastrointestinal symptoms, titrate to recommended dosage as follows: Adults with Psoriatic Arthritis, Plaque Psoriasis, or Behçet's Disease See Table 1 for the initial titration schedule. Recommended maintenance dosage is OTEZLA 30 mg twice daily or OTEZLA XR 75 mg once daily ( 2.1 ) Pediatric Patients 6 Years of Age and Older and Weighing at Least 20 kg with Psoriatic Arthritis or Moderate to Severe Plaque Psoriasis See Table 2 for the initial titration schedule ( 2.1 ) For patients weighing 50 kg or more : Recommended maintenance dosage is OTEZLA 30 mg twice daily or OTEZLA XR 75 mg once daily ( 2.1 ) For patients weighing 20 kg to less than 50 kg : Recommended maintenance dosage is OTEZLA 20 mg twice daily ( 2.1 ) Dosage in Patients with Severe Renal Impairment : Adult Patients : For initial dosage titration, titrate using only morning schedule listed in Table 1 and skip afternoon doses. Recommended maintenance dosage is OTEZLA 30 mg once daily ( 2.3 ) Pediatric Patients 6 Years of Age and Older and Weighing at Least 20 kg with Psoriatic Arthritis or Moderate to Severe Plaque Psoriasis : For initial dosage titration, titrate using only morning schedule for appropriate body weight category in Table 2 and skip afternoon doses ( 2.3 ) For patients weighing 50 kg or more: Recommended maintenance dosage is OTEZLA 30 mg once daily ( 2.3 ) For patients weighing 20 kg to less than 50 kg: Recommended maintenance dosage is OTEZLA 20 mg once daily ( 2.3 ) 2.1 Recommended Dosage in Adult and Pediatric Patients with Psoriatic Arthritis, Plaque Psoriasis, and Behçet's Disease Adult Patients with Psoriatic Arthritis, Plaque Psoriasis, or Behçet's Disease The recommended initial dosage titration from Day 1 to Day 5 is shown in Table 1. Following the 5-day titration with OTEZLA, the recommended maintenance dosage is OTEZLA 30 mg twice daily or OTEZLA XR 75 mg once daily taken orally starting on Day 6. This titration is intended to reduce the gastrointestinal symptoms associated with initial therapy. Table 1. Dosage Titration Schedule for Adult Patients with Psoriatic Arthritis, Plaque Psoriasis, or Behçet's Disease OTEZLA Dosage Titration OTEZLA tablets should be used for the initial titration regardless of whether OTEZLA or OTEZLA XR will be used for the maintenance dosage. OTEZLA/OTEZLA XR Maintenance Dosage Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 & thereafter AM AM PM AM PM AM PM AM PM BID = twice daily; QD = once daily 10 mg 10 mg 10 mg 10 mg 20 mg 20 mg 20 mg 20 mg 30 mg OTEZLA 30 mg BID OR OTEZLA XR 75 mg QD Pediatric Patients 6 Years of Age and Older and Weighing at Least 20 kg with Psoriatic Arthritis Moderate to Severe Plaque Psoriasis The recommended dosage for pediatric patients 6 years of age and older and weighing at least 20 kg with psoriatic arthritis or moderate to severe plaque psoriasis is based on body weight. Following the appropriate initial titration schedule shown in Table 2, the recommended maintenance dosage is: For pediatric patients who weigh at least 50 kg: OTEZLA 30 mg twice daily or OTEZLA XR 75 mg once daily taken orally For pediatric patients who weigh from 20 kg to less than 50 kg: OTEZLA 20 mg twice daily taken orally The initial titration is intended to reduce the gastrointestinal symptoms associated with initial therapy. Table 2. Dosage Titration Schedule for Pediatric Patients 6 Years of Age and Older and Weighing at Least 20 kg with Psoriatic Arthritis or Moderate to Severe Plaque Psoriasis OTEZLA Dosage Titration OTEZLA tablets should be used for the initial titration regardless of whether OTEZLA or OTEZLA XR will be used for the maintenance dosage. OTEZLA/OTEZLA XR Maintenance Dosage Body Weight Day 1 Day 2 Day 3 Day 4 Day 5 Day 6 & thereafter AM AM PM AM PM AM PM AM PM BID = twice daily; QD = once daily 50 kg or more 10 mg 10 mg 10 mg 10 mg 20 mg 20 mg 20 mg 20 mg 30 mg OTEZLA 30 mg BID OR OTEZLA XR 75 mg QD 20 kg to less than 50 kg 10 mg 10 mg 10 mg 10 mg 20 mg 20 mg 20 mg 20 mg 20 mg OTEZLA 20 mg BID 2.2 Switching Between OTEZLA and OTEZLA XR Patients treated with OTEZLA 30 mg twice daily may be switched to OTEZLA XR 75 mg once daily the day following the last dose of OTEZLA 30 mg. Patients treated with OTEZLA XR 75 mg once daily may be switched to OTEZLA 30 mg twice daily the day following the last dose of OTEZLA XR 75 mg. 2.3 Dosage Adjustment in Adult and Pediatric Patients with Severe Renal Impairment Adult Patients with Psoriatic Arthritis, Plaque Psoriasis, or Behçet's Disease For initial dosage titration in adult patients with severe renal impairment (creatinine clearance [CLcr] of less than 30 mL per minute estimated by the Cockcroft–Gault equation), titrate OTEZLA using only the AM schedule listed in Table 1 and skip the PM doses. The recommended maintenance dosage in this group is OTEZLA 30 mg once daily [see Use in Specific Populations (8.6) and Clinical Pharmacology (12.3) ] . OTEZLA XR is not recommended for adult patien

6 ADVERSE REACTIONS The following adverse reactions are described elsewhere in the labeling: Hypersensitivity [see Warnings and Precautions (5.1) ] Diarrhea, Nausea, and Vomiting [see Warnings and Precautions (5.2) ] Depression [see Warnings and Precautions (5.3) ] Weight Decrease [see Warnings and Precautions (5.4) ] Drug Interactions [see Warnings and Precautions (5.5) ] Psoriatic Arthritis : The most common adverse reactions (≥ 5%) are diarrhea, nausea, and headache ( 6.1 ) Plaque Psoriasis : The most common adverse reactions (≥ 5%) are diarrhea, nausea, upper respiratory tract infection, and headache, including tension headache ( 6.1 ) Behçet's Disease : The most common adverse reactions (≥ 10%) are diarrhea, nausea, headache, and upper respiratory tract infection ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Amgen Inc. at 1-800-77-AMGEN (1-800-772-6436) or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch. 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in clinical practice. Psoriatic Arthritis Clinical Trials OTEZLA was evaluated in three multicenter, randomized, double-blind, placebo-controlled trials (PsA-1, PsA-2, and PsA-3) of similar design in adult subjects with active psoriatic arthritis [see Clinical Studies (14.1) ] . Across the three trials, there were 1493 subjects randomized equally to placebo, OTEZLA 20 mg twice daily or OTEZLA 30 mg twice daily. Titration was used over the first 5 days [see Dosage and Administration (2.1) ] . Placebo subjects whose tender and swollen joint counts had not improved by at least 20% were re-randomized 1:1 in a blinded fashion to either OTEZLA 20 mg twice daily or 30 mg twice daily at week 16 while OTEZLA subjects remained on their initial treatment. Subjects ranged in age from 18 to 83 years, with an overall median age of 51 years. The majority of the most common adverse reactions presented in Table 3 occurred within the first 2 weeks of treatment and tended to resolve over time with continued dosing. Diarrhea, headache, and nausea were the most commonly reported adverse reactions. The most common adverse reactions leading to discontinuation for subjects taking OTEZLA were nausea (1.8%), diarrhea (1.8%), and headache (1.2%). The proportion of subjects with psoriatic arthritis who discontinued treatment due to any adverse reaction was 4.6% for subjects taking OTEZLA 30 mg twice daily and 1.2% for placebo-treated subjects. Table 3. Adverse Reactions Reported in ≥ 2% of Adult Subjects with Active Psoriatic Arthritis on OTEZLA 30 mg Twice Daily and ≥ 1% than That Observed in Subjects on Placebo up to Day 112 (Week 16) Placebo OTEZLA 30 mg BID BID = twice daily. Adverse Reactions Day 1 to 5 (N = 495) n (%) n (%) indicates number of subjects and percent. Day 6 to Day 112 (N = 490) n (%) Day 1 to 5 (N = 497) n (%) Day 6 to Day 112 (N = 493) n (%) Diarrhea Of the reported gastrointestinal adverse reactions, 1 subject experienced a serious adverse reaction of nausea and vomiting in OTEZLA 30 mg twice daily; 1 subject treated with OTEZLA 20 mg twice daily experienced a serious adverse reaction of diarrhea; 1 subject treated with OTEZLA 30 mg twice daily experienced a serious adverse reaction of headache. 6 (1.2) 8 (1.6) 46 (9.3) 38 (7.7) Nausea 7 (1.4) 15 (3.1) 37 (7.4) 44 (8.9) Headache 9 (1.8) 11 (2.2) 24 (4.8) 29 (5.9) Upper respiratory tract infection Of the reported adverse drug reactions none were serious. 3 (0.6) 9 (1.8) 3 (0.6) 19 (3.9) Vomiting 2 (0.4) 2 (0.4) 4 (0.8) 16 (3.2) Nasopharyngitis 1 (0.2) 8 (1.6) 1 (0.2) 13 (2.6) Abdominal pain upper 0 (0.0) 1 (0.2) 3 (0.6) 10 (2.0) Moderate to Severe Plaque Psoriasis Clinical Trials Adverse Reactions from Clinical Trials in Adults The safety of OTEZLA was assessed in 1426 subjects in three randomized, double-blind, placebo-controlled trials in adult subjects with moderate to severe plaque psoriasis who were candidates for phototherapy or systemic therapy. Subjects were randomized to receive OTEZLA 30 mg twice daily or placebo twice daily. Titration was used over the first 5 days [see Dosage and Administration (2.1) ] . Subjects ranged in age from 18 to 83 years, with an overall median age of 46 years. Diarrhea, nausea, and upper respiratory tract infection were the most commonly reported adverse reactions (see Table 4 ). The most common adverse reactions leading to discontinuation for subjects taking OTEZLA were nausea (1.6%), diarrhea (1.0%), and headache (0.8%). The proportion of subjects with plaque psoriasis who discontinued treatment due to any adverse reaction was 6.1% for subjects treated with OTEZLA 30 mg twice daily and 4.1% for placebo-treated subjects. Table 4. Adverse Reactions Reported in ≥ 1% of Adult Subjects with Moderate to Severe Plaque Psoriasis on OTEZLA and

7 DRUG INTERACTIONS 7.1 Strong CYP450 Inducers Co-administration with strong CYP450 inducers (such as rifampin) decreases apremilast exposure and may result in loss of efficacy of OTEZLA/OTEZLA XR [see Warnings and Precautions (5.5) and Clinical Pharmacology (12.3) ] .