OPZELURA

1 INDICATIONS AND USAGE OPZELURA is a Janus kinase (JAK) inhibitor indicated for: the topical short-term and non-continuous chronic treatment of mild to moderate atopic dermatitis in non-immunocompromised adult and pediatric patients 2 years of age and older whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. ( 1.1 ) the topical treatment of nonsegmental vitiligo in adult and pediatric patients 12 years of age and older. ( 1.2 ) Limitations of Use Use of OPZELURA in combination with therapeutic biologics, other JAK inhibitors or potent immunosuppressants such as azathioprine or cyclosporine is not recommended. ( 1.3 ) 1.1 Atopic Dermatitis OPZELURA is indicated for the topical short-term and non-continuous chronic treatment of mild to moderate atopic dermatitis in non-immunocompromised adult and pediatric patients 2 years of age and older whose disease is not adequately controlled with topical prescription therapies or when those therapies are not advisable. 1.2 Nonsegmental Vitiligo OPZELURA is indicated for the topical treatment of nonsegmental vitiligo in adult and pediatric patients 12 years of age and older. 1.3 Limitations of Use Use of OPZELURA in combination with therapeutic biologics, other Janus kinase (JAK) inhibitors, or potent immunosuppressants such as azathioprine or cyclosporine is not recommended.

2 DOSAGE AND ADMINISTRATION Atopic Dermatitis Apply a thin layer of OPZELURA topically twice daily to affected areas of up to 20% body surface area. ( 2.1 ) Do not use OPZELURA with occlusive dressings. ( 2.1 ) Adult and Pediatric Patients 12 Years of Age and Older Do not use more than one 60 gram tube of OPZELURA per week or one 100 gram tube per 2 weeks. ( 2.1 ) Pediatric Patients 2 to 11 Years of Age Do not use more than one 60 gram tube of OPZELURA per 2 weeks. ( 2.1 ) Nonsegmental Vitiligo Apply a thin layer of OPZELURA topically twice daily to affected areas of up to 10% body surface area. ( 2.2 ) Do not use more than one 60 gram tube of OPZELURA per week or one 100 gram tube per 2 weeks. ( 2.2 ) 2.1 Recommended Dosage and Administration for Atopic Dermatitis OPZELURA is for topical use only. OPZELURA is not for ophthalmic, oral, or intravaginal use. Instruct patients to apply a thin layer of OPZELURA twice daily to affected areas of up to 20% body surface area. Do not use OPZELURA with occlusive dressings. Stop using when signs and symptoms (e.g., itch, rash, and redness) of atopic dermatitis resolve. If signs and symptoms do not improve within 8 weeks, patients should be re-examined by their healthcare provider [see Clinical Studies ( 14.1 )] . Adult and Pediatric Patients 12 Years of Age and Older Do not use more than one 60 gram tube of OPZELURA per week or one 100 gram tube per 2 weeks. Pediatric Patients 2 to 11 Years of Age Do not use more than one 60 gram tube of OPZELURA per 2 weeks. 2.2 Recommended Dosage and Administration for Nonsegmental Vitiligo OPZELURA is for topical use only. OPZELURA is not for ophthalmic, oral, or intravaginal use. Instruct patients to apply a thin layer of OPZELURA twice daily to affected areas of up to 10% body surface area. Do not use more than one 60 gram tube of OPZELURA per week or one 100 gram tube per 2 weeks. Satisfactory patient response may require treatment with OPZELURA for more than 24 weeks. If the patient does not find the repigmentation meaningful by 24 weeks, the patient should be re‑evaluated by the healthcare provider [see Clinical Studies ( 14.2 )] .

4 CONTRAINDICATIONS None. None. ( 4 )

5 WARNINGS AND PRECAUTIONS Serious Infections: Serious bacterial, mycobacterial, fungal and viral infections have occurred. Regularly monitor patients for infection and manage it promptly. ( 5.1 ) Non-melanoma Skin Cancers . Basal cell and squamous cell carcinoma have occurred. Perform periodic skin examinations during treatment and following treatment as appropriate. ( 5.3 ) Thrombosis. Thromboembolic events have occurred. ( 5.5 ) Cytopenias: Thrombocytopenia, anemia, neutropenia, lymphopenia, and leukopenia have occurred. Perform CBC monitoring as clinically indicated. ( 5.6 ) 5.1 Serious Infections Serious and sometimes fatal infections due to bacterial, mycobacterial, invasive fungal, viral, or other opportunistic pathogens have been reported in patients receiving oral JAK inhibitors. Serious lower respiratory tract infections were reported in the clinical development program with topical ruxolitinib. Avoid use of OPZELURA in patients with an active, serious infection, including localized infections. Consider the risks and benefits of treatment prior to initiating OPZELURA in patients: with chronic or recurrent infection with a history of a serious or an opportunistic infection who have been exposed to tuberculosis who have resided or traveled in areas of endemic tuberculosis or endemic mycoses; or with underlying conditions that may predispose them to infection. Closely monitor patients for the development of signs and symptoms of infection during and after treatment with OPZELURA. Interrupt OPZELURA if a patient develops a serious infection, an opportunistic infection, or sepsis. Do not resume OPZELURA until the infection is controlled. Tuberculosis No cases of active tuberculosis (TB) were reported in clinical trials with OPZELURA. Cases of active TB were reported in clinical trials of oral JAK inhibitors used to treat inflammatory conditions. Consider evaluating patients for latent and active TB infection prior to administration of OPZELURA. During OPZELURA use, monitor patients for the development of signs and symptoms of TB. Viral Reactivation Viral reactivation, including cases of herpes virus reactivation (e.g., herpes zoster), were reported in clinical trials with JAK inhibitors used to treat inflammatory conditions including OPZELURA. If a patient develops herpes zoster, consider interrupting OPZELURA treatment until the episode resolves. Hepatitis B and C The impact of JAK inhibitors used to treat inflammatory conditions including OPZELURA on chronic viral hepatitis reactivation is unknown. Patients with a history of hepatitis B or C infection were excluded from clinical trials. Hepatitis B viral load (HBV-DNA titer) increases, with or without associated elevations in alanine aminotransferase and aspartate aminotransferase, have been reported in patients with chronic HBV infections taking oral ruxolitinib. OPZELURA initiation is not recommended in patients with active hepatitis B or hepatitis C. 5.2 Mortality In a large, randomized, postmarketing safety study of an oral JAK inhibitor in rheumatoid arthritis (RA) patients 50 years of age and older with at least one cardiovascular risk factor, a higher rate of all-cause mortality, including sudden cardiovascular death, was observed in patients treated with the JAK inhibitor compared with TNF blockers. Consider the benefits and risks for the individual patient prior to initiating or continuing therapy with OPZELURA. 5.3 Malignancy and Lymphoproliferative Disorders Malignancies, including lymphomas, were observed in clinical trials of oral JAK inhibitors used to treat inflammatory conditions. Patients who are current or past smokers are at additional increased risk. Malignancies, including lymphomas, have occurred in patients receiving JAK inhibitors used to treat inflammatory conditions. In a large, randomized, postmarketing safety study of an oral JAK inhibitor in RA patients, a higher rate of malignancies (excluding non-melanoma skin cancer) was observed in patients treated with the JAK inhibitor compared to those treated with TNF blockers. A higher rate of lymphomas was observed in patients treated with the JAK inhibitor compared to those treated with TNF blockers. A higher rate of lung cancers was observed in current or past smokers treated with the JAK inhibitor compared to those treated with TNF blockers. In this study, current or past smokers had an additional increased risk of overall malignancies. Consider the benefits and risks for the individual patient prior to initiating or continuing therapy with OPZELURA, particularly in patients with a known malignancy (other than successfully treated non-melanoma skin cancers), patients who develop a malignancy when on treatment, and patients who are current or past smokers. Non-melanoma Skin Cancers Non-melanoma skin cancers including basal cell and squamous cell carcinoma have occurred in patients treated with OPZELURA. Perform periodic skin examinations during OPZELURA treatment and following treatment as appropriate. Exposure to sunlight and UV light should be limited by wearing protective clothing and using broad-spectrum sunscreen. 5.4 Major Adverse Cardiovascular Events (MACE) In a large, randomized, postmarketing safety study of an oral JAK inhibitor in RA patients 50 years of age and older with at least one cardiovascular risk factor, a higher rate of major adverse cardiovascular events (MACE) defined as cardiovascular death, non-fatal myocardial infarction (MI), and non-fatal stroke was observed with the JAK inhibitor compared to those treated with TNF blockers. Patients who are current or past smokers are at additional increased risk. Consider the benefits and risks for the individual patient prior to initiating or continuing therapy with OPZELURA, particularly in patients who are current or past smokers and patients with other cardiovascular risk factors. Patients should be informed about the symptoms of serious cardiovascular events and the steps to take if they occur. Discontinue OPZELURA in patients that have experienced a myocardial infarction or stroke. 5.5 Thrombosis Thromboembolic events were observed in clinical trials with OPZELURA. Thrombosis, including deep vein thrombosis (DVT), pulmonary embolism (PE), and arterial thrombosis have been reported in patients receiving JAK inhibitors used to treat inflammatory conditions. Many of these adverse reactions were serious and some resulted in death. In a large, randomized, postmarketing safety study of an oral JAK inhibitor in RA patients 50 years of age and older with at least one cardiovascular risk factor, higher rates of overall thrombosis, DVT, and PE were observed compared to those treated with TNF blockers. Avoid OPZELURA in patients who may be at increased risk of thrombosis. If symptoms of thrombosis occur, discontinue OPZELURA and evaluate and treat patients appropriately. 5.6 Cytopenias Thrombocytopenia, anemia, neutropenia, lymphopenia, and leukopenia were reported in the clinical trials with OPZELURA. Consider the benefits and risks for individual patients who have a known history of these events prior to initiating therapy with OPZELURA. Perform CBC monitoring as clinically indicated. Discontinue OPZELURA if signs and/or symptoms associated with clinically significant decreases in laboratory values occur. 5.7 Lipid Elevations Treatment with oral ruxolitinib has been associated with increases in lipid parameters including total cholesterol, low-density lipoprotein (LDL) cholesterol, and triglycerides.

7 DRUG INTERACTIONS Drug interaction studies with OPZELURA have not been conducted. Ruxolitinib is known to be a substrate for cytochrome P450 3A4 (CYP3A4). Inhibitors of CYP3A4 may increase ruxolitinib systemic concentrations whereas inducers of CYP3A4 may decrease ruxolitinib systemic concentrations [see Clinical Pharmacology ( 12.3 )] . Strong Inhibitors of CYP3A4 Avoid concomitant use of OPZELURA with strong inhibitors of CYP3A4 as there is a potential to increase the systemic exposure of ruxolitinib and could increase the risk of OPZELURA adverse reactions [see Clinical Pharmacology ( 12.3 )] .

6 ADVERSE REACTIONS In atopic dermatitis, the most common adverse reactions (incidence ≥ 1%) are nasopharyngitis, diarrhea, bronchitis, ear infection, eosinophil count increased, urticaria, folliculitis, tonsillitis, rhinorrhea, upper respiratory tract infection, COVID-19, application site reactions, pyrexia, and white blood cell decreased. ( 6 ) In nonsegmental vitiligo, the most common adverse reactions (incidence ≥ 1%) are application site acne, application site pruritus, nasopharyngitis, headache, urinary tract infection, application site erythema, and pyrexia. ( 6 ) To report SUSPECTED ADVERSE REACTIONS, contact Incyte Corporation at 1-855-463-3463 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 practice. Adverse Reactions in Adult and Pediatric Subjects 2 Years of Age and Older with Atopic Dermatitis Adult and Pediatric Subjects 12 Years of Age and Older In two double-blind, vehicle-controlled clinical trials (TRuE-AD1 and TRuE-AD2), 499 adult and pediatric subjects 12 years of age and older with atopic dermatitis were treated topically with OPZELURA twice daily for 8 weeks [see Clinical Studies ( 14.1 )] . The adverse reactions reported by ≥ 1% of OPZELURA treated subjects and at a greater incidence than in the vehicle arm are listed in Table 1. Table 1: Adverse Reactions Occurring in ≥ 1% of Adult and Pediatric Subjects 12 Years of Age and Older Treated with OPZELURA for Atopic Dermatitis through Week 8 in TRuE-AD1 and TRuE-AD2 Adverse Reaction OPZELURA (N = 499) n (%) Vehicle (N = 250) n (%) Nasopharyngitis 13 (3) 2 (1) Bronchitis 4 (1) 0 (0) Ear infection 4 (1) 0 (0) Eosinophil count increased 4 (1) 0 (0) Urticaria 4 (1) 0 (0) Diarrhea 3 (1) 1 (< 1) Folliculitis 3 (1) 0 (0) Tonsillitis 3 (1) 0 (0) Rhinorrhea 3 (1) 1 (< 1) Adverse reactions that occurred in TRuE-AD1 and TRuE-AD2 in < 1% of subjects in the OPZELURA group and none in the vehicle group were: neutropenia, allergic conjunctivitis, pyrexia, seasonal allergy, herpes zoster, otitis externa, Staphylococcal infection, and acneiform dermatitis. No clinically meaningful differences in safety or effectiveness were observed between adult and pediatric subjects 12 to 17 years of age. Pediatric Subjects 2 to 11 Years of Age In a double-blind, vehicle-controlled clinical trial (TRuE-AD3), 130 pediatric subjects 2 to 11 years of age with mild to moderate atopic dermatitis were treated topically with OPZELURA twice daily for 8 weeks [see Clinical Studies ( 14.1 )] . The adverse reactions reported by ≥ 1% of subjects treated with OPZELURA and at a greater incidence than in the vehicle arm are listed in Table 2. Table 2: Adverse Reactions Occurring in ≥ 1% Pediatric Subjects 2 to 11 Years of Age Treated with OPZELURA for Atopic Dermatitis through Week 8 in TRuE-AD3 Adverse Reaction OPZELURA (N = 130) n (%) Vehicle (N = 65) n (%) Upper respiratory tract infection Upper respiratory tract infection includes upper respiratory tract infection, nasopharyngitis, rhinorrhea, oropharyngeal pain, respiratory tract congestion, viral upper respiratory tract infection 20 (15) 7 (11) COVID-19 6 (5) 2 (3) Application site reaction Application site reaction includes application site pain, application site irritation, application site discomfort, application site pruritus 6 (5) 1 (2) Pyrexia 3 (2) 0 (0) White blood cell decreased White blood cell decreased includes white blood cell decreased, leukopenia 2 (2) 0 (0) Subjects with cytopenias (defined as hemoglobin < 10 g/dL, absolute neutrophil count (ANC) < 1000/μL, and platelet count < 100,000/μL) at screening were excluded from the trial. The impact of OPZELURA on blood cell counts in this population has not been studied. Adverse Reactions in Adult and Pediatric Subjects 12 Years of Age and Older with Nonsegmental Vitiligo In two double-blind, vehicle-controlled clinical trials (TRuE-V1 and TRuE-V2), 449 adult and pediatric subjects 12 years of age and older with nonsegmental vitiligo were treated topically with OPZELURA twice daily for 24 weeks [see Clinical Studies ( 14.2 )] . The adverse reactions reported by OPZELURA treated subjects with an incidence of ≥ 1% and at least 1% greater incidence than in the vehicle arm in the 24-week double-blind period are listed in Table 3. Table 3: Adverse Reactions Occurring in ≥ 1% of Adult and Pediatric Subjects 12 Years of Age and Older Treated with OPZELURA for Nonsegmental Vitiligo through Week 24 in TRuE-V1 and TRuE-V2 Adverse Reaction OPZELURA (N = 449) n (%) Vehicle (N = 224) n (%) Application site acne 26 (6) 2 (1) Application site pruritus 23 (5) 6 (3) Nasopharyngitis 19 (4) 5 (2) Headache 17 (4) 6 (3) Urinary tract infection 7 (2) 1 (< 1) Application site erythema 7 (2) 1 (< 1) Pyrexia 6 (1) 0 Adverse reactions that occurred in TRuE-V1 and TRuE-V2 in ≥ 0.5% to < 1% of subjects in the OPZELURA group and none in the vehicle group were: application site dermatitis, hypertension, anxiety, application site discoloration, application site folliculitis, dermatitis contact, diarrhea, ear infection, gastritis, gastroenteritis, hordeolum, influenza-like illness, insomnia, nasal congestion, and vomiting. No clinically meaningful differences in safety or effectiveness were observed between adults and pediatric subjects.

8.1 Pregnancy Pregnancy Exposure Registry There is a pregnancy registry that monitors pregnancy outcomes in pregnant persons exposed to OPZELURA during pregnancy. Pregnant persons exposed to OPZELURA and healthcare providers should report OPZELURA exposure by calling 1-855-463-3463 or visiting www.opzelura.pregnancy.incyte.com. Risk Summary Available data from pregnancies reported in clinical trials with OPZELURA are not sufficient to evaluate a drug-associated risk for major birth defects, miscarriage, or other adverse maternal or fetal outcomes. In animal reproduction studies, oral administration of ruxolitinib to pregnant rats and rabbits during the period of organogenesis resulted in adverse developmental outcomes at doses associated with maternal toxicity (see Data) . The background risks of major birth defects and miscarriage for the indicated populations are unknown. All pregnancies carry some risk of birth defects, loss, or other adverse outcomes. The background risk in the U.S. general population of major birth defects and miscarriage is 2-4% and 15-20%, respectively. Data Animal Data Ruxolitinib was administered orally to pregnant rats or rabbits during the period of organogenesis, at doses of 15, 30, or 60 mg/kg/day in rats and 10, 30, or 60 mg/kg/day in rabbits. There were no treatment-related malformations at any dose. A decrease in fetal weight of approximately 9% was noted in rats at the highest and maternally toxic dose of 60 mg/kg/day. This dose resulted in systemic exposure approximately 22 times the clinical systemic exposure at the maximum recommended human dose (MRHD; the clinical systemic exposure from ruxolitinib cream, 1.5% applied twice daily to 25-40% atopic dermatitis-affected body surface area is used for calculation of multiples of human exposure). In rabbits, lower fetal weights of approximately 8% and increased late resorptions were noted at the highest and maternally toxic dose of 60 mg/kg/day. This dose resulted in systemic exposure approximately 70% the MRHD clinical systemic exposure. In a pre-and post-natal development study in rats, pregnant animals were dosed with ruxolitinib from implantation through lactation at doses up to 30 mg/kg/day. There were no drug-related adverse effects on embryofetal survival, postnatal growth, development parameters or offspring reproductive function at the highest dose evaluated (3.1 times the MRHD clinical systemic exposure).