PADCEV EJFV

1 INDICATIONS AND USAGE PADCEV ® , in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, as neoadjuvant treatment and then continued after cystectomy as adjuvant treatment, is indicated for the treatment of adult patients with muscle invasive bladder cancer (MIBC) who are ineligible for cisplatin-containing chemotherapy. PADCEV ® , in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, is indicated for the treatment of adult patients with locally advanced or metastatic urothelial cancer (mUC). PADCEV, as a single agent, is indicated for the treatment of adult patients with locally advanced or mUC who: • have previously received a programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor and platinum-containing chemotherapy, or • are ineligible for cisplatin-containing chemotherapy and have previously received one or more prior lines of therapy. PADCEV is a Nectin-4-directed antibody and microtubule inhibitor conjugate indicated: • in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, as neoadjuvant treatment and then continued after cystectomy as adjuvant treatment, for the treatment of adult patients with muscle invasive bladder cancer (MIBC) who are ineligible for cisplatin-containing chemotherapy. ( 1 ) • in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, for the treatment of adult patients with locally advanced or metastatic urothelial cancer (mUC). ( 1 ) • as a single agent for the treatment of adult patients with locally advanced or mUC who: o have previously received a programmed death receptor-1 (PD-1) or programmed death-ligand 1 (PD-L1) inhibitor and platinum-containing chemotherapy, or o are ineligible for cisplatin-containing chemotherapy and have previously received one or more prior lines of therapy. ( 1 )

2 DOSAGE AND ADMINISTRATION • For intravenous infusion only. Do not administer PADCEV as an intravenous push or bolus. Do not mix with, or administer as an infusion with, other medicinal products. ( 2.3 ) • MIBC: The recommended dose of PADCEV in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph is 1.25 mg/kg (up to a maximum dose of 125 mg) given as an intravenous infusion over 30 minutes. PADCEV is administered as neoadjuvant treatment on Days 1 and 8 of each 21-day cycle for 3 cycles or until disease progression that precludes curative intent cystectomy or unacceptable toxicity, followed by adjuvant treatment on Days 1 and 8 of each 21-day cycle for 6 cycles or until disease recurrence or unacceptable toxicity. ( 2.1 ) • Locally Advanced or mUC: The recommended dose of PADCEV in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph is 1.25 mg/kg (up to a maximum dose of 125 mg) given as an intravenous infusion over 30 minutes on Days 1 and 8 of a 21-day cycle until disease progression or unacceptable toxicity. ( 2.1 ) • The recommended dose of PADCEV as a single agent is 1.25 mg/kg (up to a maximum dose of 125 mg) given as an intravenous infusion over 30 minutes on Days 1, 8, and 15 of a 28-day cycle until disease progression or unacceptable toxicity. ( 2.1 ) • Avoid use in patients with moderate or severe hepatic impairment. ( 8.6 ) 2.1 Recommended Dosage The recommended dosages for PADCEV in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, and PADCEV as a single agent are presented in Table 1 and Table 2 . Administer PADCEV as an intravenous infusion over 30 minutes as recommended [see Instructions for Preparation and Administration ( 2.3 ) ]. Administer PADCEV prior to pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph if administering on the same day. Table 1. Recommended Dosages for PADCEV in combination with pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph Administer PADCEV prior to pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph if administering on the same day. For the recommended dosage of pembrolizumab or pembrolizumab and berahyaluronidase alfa-pmph, refer to the respective Prescribing Information. Indication Recommended PADCEV Dosage Duration of Therapy Neoadjuvant and Adjuvant Muscle Invasive Bladder Cancer (MIBC) PADCEV 1.25 mg/kg (up to a maximum of 125 mg for patients ≥100 kg) on Days 1 and 8 of a 21-day cycle. Neoadjuvant: 3 cycles or until disease progression that precludes curative intent cystectomy or unacceptable toxicity. Adjuvant: 6 cycles or until disease recurrence or unacceptable toxicity. Locally advanced or metastatic Urothelial Cancer (mUC) PADCEV 1.25 mg/kg (up to a maximum of 125 mg for patients ≥100 kg) on Days 1 and 8 of a 21-day cycle. Until disease progression or unacceptable toxicity. Table 2. Recommended Dosages for PADCEV as a single agent Indication Recommended PADCEV Dosage Duration of Therapy Locally advanced or metastatic Urothelial Cancer (mUC) PADCEV 1.25 mg/kg (up to a maximum of 125 mg for patients ≥100 kg) on Days 1, 8, and 15 of a 28-day cycle. Until disease progression or unacceptable toxicity. 2.2 Dose Modifications Table 3. Dose Modifications Adverse Reaction Severity Grade 1 is mild, Grade 2 is moderate, Grade 3 is severe, Grade 4 is life-threatening. Dose Modification Skin Reactions [see Boxed Warning , Warnings and Precautions ( 5.1 )] For persistent or recurrent Grade 2 skin reactions Consider withholding until Grade ≤1, then resume treatment at the same dose level or dose reduce by one dose level. Grade 3 skin reactions Withhold until Grade ≤1, then resume treatment at the same dose level or dose reduce by one dose level. Suspected SJS or TEN Immediately withhold, consult a specialist to confirm the diagnosis. If not SJS/TEN, see Grade 2-4 skin reactions. Confirmed SJS or TEN; Grade 4 or recurrent Grade 3 skin reactions Permanently discontinu…

5 WARNINGS AND PRECAUTIONS • Hyperglycemia: Diabetic ketoacidosis may occur in patients with and without preexisting diabetes mellitus, which may be fatal. Closely monitor blood glucose levels in patients with, or at risk for, diabetes mellitus or hyperglycemia. Withhold PADCEV if blood glucose is >250 mg/dL. ( 2.2 , 5.2 ) • Pneumonitis/Interstitial Lung Disease (ILD): Severe, life-threatening or fatal pneumonitis/ILD may occur. Withhold PADCEV for Grade 2 pneumonitis/ILD and consider dose reduction. Permanently discontinue PADCEV for Grade 3 or 4 pneumonitis/ILD. ( 2.2 , 5.3 ) • Peripheral Neuropathy: Monitor patients for new or worsening peripheral neuropathy and consider dose interruption, dose reduction, or discontinuation of PADCEV. ( 2.2 , 5.4 ) • Ocular Disorders: Ocular disorders, including vision changes, may occur. Monitor patients for signs or symptoms of ocular disorders. Consider prophylactic artificial tears for dry eyes and treatment with ophthalmic topical steroids after an ophthalmic exam. Consider dose interruption or dose reduction of PADCEV when symptomatic ocular disorders occur. ( 5.5 ) • Infusion Site Extravasation: Ensure adequate venous access prior to administration. Monitor the infusion site during PADCEV administration and stop the infusion immediately for suspected extravasation. ( 5.6 ) • Embryo-Fetal Toxicity: PADCEV can cause fetal harm. Advise of the potential risk to a fetus and to use effective contraception. ( 5.7 , 8.1 , 8.3 ) 5.1 Skin Reactions Severe cutaneous adverse reactions, including fatal cases of SJS or TEN occurred in patients treated with PADCEV. SJS and TEN occurred predominantly during the first cycle of treatment but may occur later. Skin reactions occurred in 61% (all grades) of the 167 patients treated with PADCEV in combination with intravenous pembrolizumab for the treatment of MIBC in clinical trials. The majority of the skin reactions that occurred with combination therapy included rash and maculo-papular rash. Grade 3-4 skin reactions occurred in 10% of patients (Grade 3: 9%, Grade 4: 1.2%), including rash, maculo-papular rash, toxic skin eruption, dermatitis exfoliative generalized, erythema, exfoliative rash, skin toxicity, toxic epidermal necrolysis, and toxic erythema of chemotherapy. A fatal reaction of toxic epidermal necrolysis occurred in one patient (0.6%). The median time to onset of severe skin reactions was 0.6 months (range: 0.2 to 8.8 months). Skin reactions led to discontinuation of PADCEV in 10% of patients [see Adverse Reactions ( 6.1 )] . Of the patients who experienced a skin reaction and had data regarding resolution (n=102), 83% had complete resolution and 17% had residual skin reactions at their last evaluation. Of the patients with residual skin reactions at last evaluation, 29% (5/17) had Grade ≥2 skin reactions. Skin reactions occurred in 70% (all grades) of the 564 patients treated with PADCEV in combination with intravenous pembrolizumab for the treatment of locally advanced or mUC in clinical trials. When PADCEV was given in combination with intravenous pembrolizumab, the incidence of skin reactions, including severe events, occurred at a higher rate compared to PADCEV as a single agent. The majority of the skin reactions that occurred with combination therapy included maculo-papular rash, macular rash, and papular rash. Grade 3-4 skin reactions occurred in 17% of patients (Grade 3: 16%, Grade 4: 1%), including maculo-papular rash, bullous dermatitis, dermatitis, exfoliative dermatitis, pemphigoid, rash, erythematous rash, macular rash, and papular rash. A fatal reaction of bullous dermatitis occurred in one patient (0.2%). The median time to onset of severe skin reactions was 1.7 months (range: 0.1 to 17.2 months). Skin reactions led to discontinuation of PADCEV in 6% of patients [see Adverse Reactions ( 6.1 )] . Of the patients who experienced a skin reaction and had data regarding resolution (n=391), 59% had complete resolution and 41% had…

4 CONTRAINDICATIONS None. None. ( 4 )

7 DRUG INTERACTIONS Concomitant use of dual P-gp and strong CYP3A4 inhibitors with PADCEV may increase the exposure to monomethyl auristatin E (MMAE). ( 7.1 ) 7.1 Effects of Other Drugs on PADCEV Dual P-gp and Strong CYP3A4 Inhibitors Concomitant use with dual P-gp and strong CYP3A4 inhibitors may increase unconjugated MMAE exposure [see Clinical Pharmacology ( 12.3 )] , which may increase the incidence or severity of PADCEV toxicities. Closely monitor patients for signs of toxicity when PADCEV is given concomitantly with dual P-gp and strong CYP3A4 inhibitors.

8.1 Pregnancy Risk Summary Based on the mechanism of action and findings in animals, PADCEV can cause fetal harm when administered to a pregnant woman [see Clinical Pharmacology ( 12.1 )] . There are no available human data on PADCEV use in pregnant women to inform a drug-associated risk. In an animal reproduction study, administration of enfortumab vedotin-ejfv to pregnant rats during organogenesis caused maternal toxicity, embryo-fetal lethality, structural malformations, and skeletal anomalies at maternal exposures similar to the exposures at the recommended human dose of 1.25 mg/kg (see Data ) . Advise patients of the potential risk to the fetus. The background risk of major birth defects and miscarriage for the indicated population is unknown. In the U.S. general population, the estimated background risk of major birth defects and miscarriage in clinically recognized pregnancies is 2%-4% and 15%-20%, respectively. Data Animal Data In a rat pilot embryo-fetal development study, administration of enfortumab vedotin-ejfv on gestation day 6 and 13 during the period of organogenesis resulted in a complete litter loss in all pregnant rats at the maternally toxic dose of 5 mg/kg (approximately 3 times the exposure at the recommended human dose). A dose of 2 mg/kg (similar to the exposure at the recommended human dose) resulted in maternal toxicity, embryo-fetal lethality, and structural malformations that included gastroschisis, malrotated hindlimb, absent forepaw, malpositioned internal organs, and fused cervical arch. Additionally, skeletal anomalies (asymmetric, fused, incompletely ossified, and misshapen sternebrae, misshapen cervical arch, and unilateral ossification of the thoracic centra) and decreased fetal weight were observed.

6 ADVERSE REACTIONS The following serious adverse reactions are described elsewhere in the labeling: • Skin Reactions [see Boxed Warning , Warnings and Precautions ( 5.1 )] • Hyperglycemia [see Warnings and Precautions ( 5.2 )] • Pneumonitis/Interstitial Lung Disease (ILD) [see Warnings and Precautions ( 5.3 )] • Peripheral Neuropathy [see Warnings and Precautions ( 5.4 )] • Ocular Disorders [see Warnings and Precautions ( 5.5 )] • Infusion Site Extravasation [see Warnings and Precautions ( 5.6 )] The most common adverse reactions, including laboratory abnormalities, (≥20%) were: • PADCEV in combination with intravenous pembrolizumab for the treatment of MIBC: increased glucose, decreased hemoglobin, increased aspartate aminotransferase, rash, increased alanine aminotransferase, fatigue, pruritus, increased creatinine, decreased sodium, decreased lymphocytes, peripheral neuropathy, increased potassium, alopecia, dysgeusia, diarrhea, decreased appetite, constipation, nausea, decreased phosphate, urinary tract infection, dry eye, and decreased weight. ( 6.1 ) • PADCEV in combination with intravenous pembrolizumab for the treatment of locally advanced or mUC: increased aspartate aminotransferase, increased creatinine, rash, increased glucose, peripheral neuropathy, increased lipase, decreased lymphocytes, increased alanine aminotransferase, decreased hemoglobin, fatigue, decreased sodium, decreased phosphate, decreased albumin, pruritus, diarrhea, alopecia, decreased weight, decreased appetite, increased urate, decreased neutrophils, decreased potassium, dry eye, nausea, constipation, increased potassium, dysgeusia, urinary tract infection, and decreased platelets. ( 6.1 ) • PADCEV as a single agent: increased glucose, increased aspartate aminotransferase, decreased lymphocytes, increased creatinine, rash, fatigue, peripheral neuropathy, decreased albumin, decreased hemoglobin, alopecia, decreased appetite, decreased neutrophils, decreased sodium, increased alanine aminotransferase, decreased phosphate, diarrhea, nausea, pruritus, increased urate, dry eye, dysgeusia, constipation, increased lipase, decreased weight, decreased platelets, abdominal pain, and dry skin. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Astellas Pharma US, Inc. at 1-800-727-7003 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. The safety population described in the WARNINGS AND PRECAUTIONS reflect exposure to PADCEV 1.25 mg/kg in combination with intravenous pembrolizumab for the treatment of MIBC in 167 patients in EV-303 (NCT03924895) and for the treatment of locally advanced or mUC in 564 patients in EV-302 (NCT04223856) and EV-103 (NCT03288545); PADCEV as a single agent at 1.25 mg/kg in 720 patients in EV-301 (NCT03474107), EV-201 (NCT03219333), EV-203 (NCT04995419), EV-101 (NCT02091999), and EV-102 (NCT03070990). Ocular disorders reflect 384 patients in EV‑201, EV-101, and EV-102. Among 167 patients receiving PADCEV in combination with intravenous pembrolizumab for the treatment of MIBC, the most common (≥20%) adverse reactions, including laboratory abnormalities, were increased glucose, decreased hemoglobin, increased aspartate aminotransferase, rash, increased alanine aminotransferase, fatigue, pruritus, increased creatinine, decreased sodium, decreased lymphocytes, peripheral neuropathy, increased potassium, alopecia, dysgeusia, diarrhea, decreased appetite, constipation, nausea, decreased phosphate, urinary tract infection, dry eye, and decreased weight. Among 564 patients receiving PADCEV in combination with intravenous pembrolizumab for the treatment of locally advanced or mUC, 59% were exposed to PADCEV for ≥6 months, and 24% were exposed for …