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Libtayo

cemiplimab-rwlc
PD-1 Inhibitor FDA Approved 2018 Regeneron/Sanofi
1. Indications and Usage

Cutaneous squamous cell carcinoma (metastatic or locally advanced not candidate for curative surgery/radiation); Basal cell carcinoma (locally advanced or metastatic previously treated with hedgehog pathway inhibitor or for whom HHI is not appropriate); Non-small cell lung cancer (first-line, PD-L1 ≥50%, no EGFR/ALK/ROS1 aberrations); Cervical cancer (recurrent or metastatic with PD-L1 CPS ≥1, with chemo ± bevacizumab)

2. Dosage and Administration

350 mg IV every 3 weeks until disease progression, unacceptable toxicity, or up to 24 months
Infusion time: Over 30 minutes

3. Dosage Forms and Strengths

Injection: 50 mg/mL solution in 7 mL (350 mg) single-dose vial

4. Contraindications

Refer to the complete prescribing information for contraindications. Libtayo 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 Libtayo.

6. Adverse Reactions
Most Common Adverse Reactions

Fatigue (29%), rash (25%), diarrhea (18%), musculoskeletal pain (17%), nausea (13%)

Fatigue
29%
Rash
25%
Diarrhea
18%
Musculoskeletal Pain
17%
Nausea
13%

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

Cemiplimab is a human IgG4 monoclonal antibody that binds to PD-1 and blocks its interactions with PD-L1 and PD-L2, releasing PD-1 pathway-mediated inhibition of the anti-tumor immune response.

Pharmacokinetics

Half-life: 19.4 days. Clearance: 0.24 L/day. Vd: 5.2 L. Steady-state by ~4 months with q3w dosing. Linear PK across 1-10 mg/kg. Not significantly affected by age, body weight, or mild 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

Libtayo 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 Libtayo. 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.