Enfortumab vedotin
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From MedlinePlus, U.S. National Library of Medicine
Boxed warning
WARNING: SERIOUS SKIN REACTIONS • PADCEV can cause severe and fatal cutaneous adverse reactions including Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN), which occurred predominantly during the first cycle of treatment, but may occur later. • Closely monitor patients for skin reactions. • Immediately withhold PADCEV and consider referral for specialized care for suspected SJS or TEN or severe skin reactions. • Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions [see Dosage and Administration ( 2.2 ), Warnings and Precautions ( 5.1 ), and Adverse Reactions ( 6.1 )].
WARNING: SERIOUS SKIN REACTIONS See full prescribing information for complete boxed warning. • PADCEV can cause severe and fatal cutaneous adverse reactions, including Stevens-Johnson syndrome (SJS) and Toxic Epidermal Necrolysis (TEN). • Immediately withhold PADCEV and consider referral for specialized care for suspected SJS or TEN or severe skin reactions. • Permanently discontinue PADCEV in patients with confirmed SJS or TEN; or Grade 4 or recurrent Grade 3 skin reactions. ( 2.2 ), ( 5.1 ), ( 6.1 )
Dosing in kidney impairment
| 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. | Patients who are cisplatin-eligibleCisplatin ineligibility is defined as meeting at least one of the following criteria: Creatinine clearance of less than 60 mL/min, ECOG PS 2 or higher, Grade 2 or higher hearing loss, NYHA Class III or higher heart failure, or Grade 2 or higher peripheral neuropathy.: |
| Patients who are cisplatin-ineligible: | ||
| Locally advanced or metastatic Urothelial Cancer (la/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. |
Dosing in liver impairment
Hepatic Impairment Avoid the use of PADCEV in patients with moderate or severe hepatic impairment (total bilirubin >1.5 × ULN and any AST). PADCEV has only been studied in a limited number of patients with moderate or severe hepatic impairment [see Clinical Pharmacology] . In another ADC that contains MMAE, the frequency of ≥ Grade 3 adverse reactions and deaths was greater in patients with moderate (Child-Pugh B) or severe (Child-Pugh C) hepatic impairment compared to patients with normal hepatic function.
Preparation and administration
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Instructions for Preparation and Administration
Administer PADCEV as an intravenous infusion only.
PADCEV is a hazardous drug. Follow applicable special handling and disposal procedures. 1 Prior to administration, the PADCEV vial is reconstituted with Sterile Water for Injection (SWFI). The reconstituted solution is subsequently diluted in an intravenous infusion bag containing either 5% Dextrose Injection, USP, 0.9% Sodium Chloride Injection, USP, or Lactated Ringer’s Injection, USP.
Reconstitution in Single-Dose Vial 1. Follow procedures for proper handling and disposal of anticancer drugs. 2. Use appropriate aseptic technique for reconstitution and preparation of dosing solutions. 3. Calculate the recommended dose based on the patient’s weight to determine the number and strength (20 mg or 30 mg) of vials needed. 4.
Reconstitute each vial as follows and, if possible, direct the stream of SWFI along the walls of the vial and not directly onto the lyophilized powder: a. 20 mg vial: Add 2.3 mL of SWFI, resulting in 10 mg/mL PADCEV. b. 30 mg vial: Add 3.3 mL of SWFI, resulting in 10 mg/mL PADCEV. 5. Slowly swirl each vial until the contents are completely dissolved.
Allow the reconstituted vial(s) to settle for at least 1 minute until the bubbles are gone. DO NOT SHAKE THE VIAL. Do not expose to direct sunlight. 6. Parenteral drug products should be inspected visually for particulate matter and discoloration prior to administration, whenever solution and container permit. The reconstituted solution should be clear to slightly opalescent, colorless to light yellow, and free of visible particles.
Discard any vial with visible particles or discoloration. 7. Based upon the calculated dose amount, the reconstituted solution from the vial(s) should be added to the infusion bag immediately. This product does not contain a preservative. If not used immediately, reconstituted vials may be stored for up to 24 hours in refrigeration at 2°C to 8°C (36°F to 46°F).
DO NOT FREEZE. Discard unused vials with reconstituted solution beyond the recommended storage time. Dilution in Infusion Bag 1. Withdraw the calculated dose amount of reconstituted solution from the vial(s) and transfer into an infusion bag. 2. Dilute PADCEV with either 5% Dextrose Injection, 0.9% Sodium Chloride Injection, or Lactated Ringer's Injection.
The infusion bag size should allow enough diluent to achieve a final concentration of 0.3 mg/mL to 4 mg/mL PADCEV. 3. Mix diluted solution by gentle inversion. DO NOT SHAKE THE BAG. Do not expose to direct sunlight. 4. Visually inspect the infusion bag for any particulate matter or discoloration prior to use. The reconstituted solution should be clear to slightly opalescent, colorless to light yellow, and free of visible particles.
DO NOT USE the infusion bag if particulate matter or discoloration is observed. 5. Discard any unused portion left in the single-dose vials. Administration 1. Immediately administer the infusion over 30 minutes through an intravenous line. 2. If the infusion is not administered immediately, the prepared infusion bag should not be stored longer than 8 hours at 2°C to 8°C (36°F to 46°F).
DO NOT FREEZE. DO NOT administer PADCEV as an intravenous push or bolus. DO NOT mix PADCEV with, or administer as an infusion with, other medicinal products.
Drug interactions
Check enfortumab vedotin against a medication listLabel text (2 paragraphs)
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.
Contraindications
None. None. ( 4 )
Pregnancy and lactation
Pregnancy
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.
For breastfeeding, also see LactMed (National Library of Medicine), which summarizes milk levels and infant effects.
Supply and cost
Drug shortage status
Recalls (last 24 months)
Therapeutic equivalence (Orange Book)
Price ladder
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