Klisyri (tirbanibulin)

Topical Antineoplastic Alkylating Agents Topical Ointment In Packet (Ea)

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Last reviewed · Source: First Databank (FDB) drug data

Overview

Tirbanibulin, a microtubule inhibitor, is a skin or mucous membrane agent.

Although tirbanibulin is a microtubule inhibitor, the mechanism of action by which tirbanibulin is effective for the treatment of actinic keratosis (AK) is unknown.

Following topical application of a mean daily dose of 138 mg of tirbanibulin to a 25 cm2 contiguous area of the balding scalp or face for 5 consecutive days, steady-state concentrations are achieved within 72 hours. Systemic exposure after 5 days of application is low; maximum plasma concentrations are approximately 0.34 ng/mL +- 0.30 ng/mL and 0.18 ng/mL +- 0.10 ng/mL when applied to the face and scalp, respectively. The median time to achieve maximum serum concentrations is approximately 7 hours after application.

Tirbanibulin is 88% bound to plasma proteins, and its binding is independent of plasma concentrations from 0.01-10 mcg/mL. Exposure to human hepatocytes in vitro generated 2 inactive metabolites of tirbanibulin, KX2-5036 and KX2-5163, and other unidentified metabolites. The method by which tirbanibulin undergoes excretion has not been fully characterized in humans.

USES: This medication is used to treat a certain skin condition (actinic keratosis) on the face or scalp area.

Generic name: tirbanibulin
Pronunciation: (TIR-ban-i-BUE-lin)
Drug class: Topical Antineoplastic Alkylating Agents
Therapeutic class: Dermatological

Reference product & biosimilars

No reference, biosimilar or interchangeable associated with this drug.

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Indications

The following indications are listed for Klisyri:

  • Actinic Keratosis On The Face Or Scalp

Dosing

Each single-use 1% ointment packet contains 2.5 mg of tirbanibulin in 250 mg.

Drug interactions

No formal drug interaction studies have been conducted with tirbanibulin.

In vitro, tirbanibulin is principally metabolized by cytochrome P-450 (CYP) isoenzyme 3A4, and to a lesser extent, CYP2C8. Findings from in vitro studies suggest that tirbanibulin has no clinically meaningful effects on the pharmacokinetics of drugs metabolized by CYP1A2, CYP2B6, CYP2C8, CYP2C9, CYP2C19, CYP2D6, or CYP3A4. Tirbanibulin also does not have clinically meaningful effects on drugs mediated by multidrug and toxin extrusion (MATE) transporter 1, MATE2-K, organic anion transporting polypeptide (OATP)1B1, OATP1B3, organic cation transporter (OCT)1, or OCT2.

Contraindications

None.

Adverse reactions

The most common adverse reactions reported in >=2% of patients receiving tirbanibulin include local skin reactions, application site pruritus, and application site pain.

Precautions

No enhanced messaging available.

ICD codes

CodeTypeDescription
Actinic keratosis on the face or scalp
L57.0ICD10CMActinic keratosis

ICD code information from First Databank (FDB).

Formulary status

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Last reviewed · Source: First Databank (FDB) drug data