CLASCOTERONE: 1,099 Adverse Event Reports & Safety Profile

WINLEVI (clascoterone) cream contains clascoterone, an androgen receptor inhibitor, in a cream base for topical dermatologic use. WINLEVI cream is a white to almost white cream. Chemically, clascoterone is cortexolone-17α propionate. Clascoterone is a white to almost white powder, practically insoluble in water. The compound has the empirical formula C 24 H 34 O 5 and molecular weight of 402.5 g/mol. The structural formula is shown below. Each gram of WINLEVI cream 1% contains 10 mg of clascoterone in a cream base of cetyl alcohol, citric acid monohydrate, edetate disodium, mineral oil, mono- and di-glycerides, polysorbate 80, propylene glycol, purified water, and vitamin E. image description

AND USAGE WINLEVI (clascoterone) cream is an androgen receptor inhibitor indicated for the topical treatment of acne vulgaris in patients 12 years of age and older. WINLEVI (clascoterone) cream is an androgen receptor inhibitor indicated for the topical treatment of acne vulgaris in patients 12 years of age and older. ( 1 )

AND ADMINISTRATION Cleanse the affected area gently. After the skin is dry, apply a thin uniform layer of WINLEVI cream twice per day, in the morning and the evening, to the affected area. Avoid accidental transfer of WINLEVI cream into eyes, mouth or other mucous membranes. If contact with mucous membranes occurs, rinse thoroughly with water. WINLEVI cream is for topical use only. WINLEVI cream is not for ophthalmic, oral or vaginal use. Apply a thin layer (approximately 1 gram) to affected area twice daily (morning and evening). Avoid contact with eyes, mouth, and mucous membranes. ( 2 ) Not for ophthalmic, oral or vaginal use. ( 2 )

None. None ( 4 )

REACTIONS Most common adverse reactions occurring in 7 to 12% of patients are erythema/reddening, pruritus and scaling/dryness. Additionally, edema, stinging, and burning occurred in >3% of patients and were reported in a similar percentage of subjects treated with vehicle. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Sun Pharmaceutical Industries, Inc. 1-800-818-4555 or FDA at 1-800-FDA-1088 or http://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 practice. In two identical multicenter, randomized, double-blind, vehicle-controlled trials, 1421 subjects 12 years and older with facial acne vulgaris applied WINLEVI cream or vehicle twice daily for 12 weeks. Overall, 62% of the subjects were female, and 38% were male, 91% of the patients were Caucasian, and the mean age was 19.7 years. Local skin reactions (edema, erythema/redness, pruritus, scaling/dryness, skin atrophy, stinging/burning, striae rubrea, telangiectasia) were observed during the 12-week treatment and occurred in a similar percentage of subjects treated with vehicle. Local skin reactions reported by ≥ 1% of subjects treated with WINLEVI cream are shown in the following table.

Table

1. Incidence of New or Worsening Local Skin Reactions Reported by ≥ 1% of Subjects Treated with WINLEVI Cream After Day 1 in 12-Week Controlled Clinical Trials WINLEVI Cream 1% (N=674 a )

Vehicle

Cream (N=656 a ) a The denominators for calculating the percentages were the 674 of 709 subjects treated with WINLEVI cream and 656 of 712 subjects treated with vehicle in these trials who had local skin reaction results reported after Day 1.

Edema

24 (3.6%) 23 (3.5%) Erythema/redness 82 (12.2%) 101 (15.4%)

Pruritus

52 (7.7%) 54 (8.2%) Scaling/dryness 71 (10.5%) 68 (10.4%) Skin atrophy 11 (1.6%) 17 (2.6%) Stinging/burning 28 (4.2%) 28 (4.3%) Striae rubrae 17 (2.5%) 10 (1.5%)

Telangiectasia

8 (1.2%) 12 (1.8%) The following adverse reactions associated with the use of WINLEVI cream were identified in clinical trials and long-term safety studies. Metabolism: hyperkalemia [see Clinical Pharmacology (12.2) ] Reproductive: polycystic ovaries, amenorrhea.

AND PRECAUTIONS Local Irritation: Pruritus, burning, skin redness or peeling may be experienced with WINLEVI cream. If these effects occur, discontinue or reduce the frequency of application of WINLEVI cream. ( 5.1 ) Hypothalamic-pituitary-adrenal (HPA) axis suppression may occur during or after treatment with clascoterone. ( 5.2 ) Attempt to withdraw use if HPA axis suppression develops. ( 5.2 ) Pediatric patients may be more susceptible to systemic toxicity. ( 5.2 , 8.4 ) Hyperkalemia: Elevated potassium levels were observed in some subjects during the clinical trials. ( 12.2 )

5.1 Local Skin Reactions WINLEVI cream may induce local irritation (erythema/redness, pruritus, scaling/ dryness). Concomitant use with other potentially irritating topical products (medicated or abrasive soaps and cleansers, soaps and cosmetics that have a strong drying effect and products with high concentrations of alcohol, astringents, spices or lime) should be limited. The product should not be applied to cuts, abrasions, eczematous or sunburned skin.

5.2 Hypothalamic-pituitary-adrenal (HPA)

Axis Suppression

Hypothalamic-pituitary-adrenal (HPA) axis suppression was observed and may occur during or after treatment with clascoterone. In the PK trial, all subjects returned to normal HPA axis function at follow-up 4 weeks after stopping treatment [see Clinical Pharmacology (12.2) ]. Conditions which augment systemic absorption include use over large surface areas, prolonged use, and the use of occlusive dressings. If HPA axis suppression develops, an attempt should be made to withdraw the drug. Pediatric patients may be more susceptible to systemic toxicity.