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Imfinzi

durvalumab
1. Indications and Usage

Unresectable Stage III NSCLC (after concurrent chemoradiation, PACIFIC setting); Extensive-stage small cell lung cancer (first-line, with etoposide and carboplatin/cisplatin); Biliary tract cancer (with gemcitabine and cisplatin, first-line); Hepatocellular carcinoma (with tremelimumab); Endometrial carcinoma

2. Dosage and Administration

NSCLC (Stage III): 10 mg/kg IV q2w for up to 12 months
ES-SCLC: 1500 mg IV q3w × 4 cycles with chemo, then 1500 mg IV q4w maintenance
Biliary tract: 1500 mg IV q3w × 8 cycles with chemo, then 1500 mg IV q4w
Weight-based: For patients <30 kg, use weight-based dosing at 20 mg/kg

3. Dosage Forms and Strengths

Injection: 50 mg/mL solution in 2.4 mL (120 mg) and 10 mL (500 mg) single-dose vials

4. Contraindications

Refer to the complete prescribing information for contraindications. Imfinzi prescribing should account for patient-specific factors including hypersensitivity to the active ingredient or any excipients.

5. Warnings and Precautions

Important warnings and precautions are detailed in the full prescribing information. Healthcare providers should review all boxed warnings, if applicable, and precautionary guidance before prescribing Imfinzi.

6. Adverse Reactions
Most Common Adverse Reactions

Fatigue (34%), nausea (22%), cough (21%), musculoskeletal pain (16%), rash (16%), pneumonitis (13%), decreased appetite (12%)

Fatigue
34%
Nausea
22%
Cough
21%
Musculoskeletal Pain
16%
Rash
16%
Pneumonitis
13%
Decreased Appetite
12%

Consult the complete prescribing information for a comprehensive list of adverse reactions and their frequencies.

7. Drug Interactions

Consult the complete prescribing information for drug interactions, including effects on CYP enzymes, transporters, and concomitant medications that may require dose adjustments or monitoring.

8. Use in Specific Populations
Pregnancy

Consult the full prescribing information for pregnancy-related considerations.

Lactation

Refer to prescribing information for lactation guidance.

Pediatric Use

Pediatric safety and efficacy information is detailed in the full label.

Hepatic/Renal Impairment

Dose modifications for organ impairment are specified in the complete prescribing information.

12. Clinical Pharmacology
Mechanism of Action

Durvalumab is a human IgG1 kappa monoclonal antibody that binds to PD-L1 and blocks PD-L1 binding to PD-1 and CD80 (B7.1), countering PD-L1-mediated inhibition of immune responses and enhancing T-cell-mediated anti-tumor activity.

Pharmacokinetics

Half-life: approximately 18 days. Clearance: 8.2 mL/h. Vd: 5.6 L. Steady-state by ~16 weeks. Linear PK at doses ≥3 mg/kg q2w. Not significantly affected by age, weight, gender, or mild-moderate renal impairment.

14. Clinical Studies

Clinical efficacy and safety data supporting the approval are available in the full prescribing information and from the clinical trials listed below.

Pivotal Clinical Trials
Additional Resources
FDA-Approved Tumor Types

Imfinzi has FDA-approved indications across the following cancer types covered on PipelineEvidence:

External Resources
Important Notice: This page is intended as a navigational reference to the FDA-approved prescribing information for Imfinzi. It does not replace the full prescribing information. Healthcare professionals should consult the complete package insert available at DailyMed before making prescribing decisions. Patient-specific factors should always guide clinical decision-making.