Taletrectinib

Generic Name: taletrectinib

Over-the-Counter (OTC)

Brand Names:

Ibtrozi

11 DESCRIPTION IBTROZI (taletrectinib) capsules contain taletrectinib adipate, a kinase inhibitor for oral use. The molecular formula for taletrectinib adipate is C 23 H 24 FN 5 O•C 6 H 10 O 4 and the molecular weight is 551.61 g/mol. The chemical name is 3-{4-[(2 R )-2-aminopropoxy]phenyl}- N -[(1 R )-1-(3-fluorophenyl)ethyl]imidazo [1,2- b ]pyridazin-6-amine monoadipate.

Overview

Uses

1 INDICATIONS AND USAGE IBTROZI ™ (taletrectinib) is indicated for the treatment of adult patients with locally advanced or metastatic ROS1 -positive non-small cell lung cancer (NSCLC) [see Dosage and Administration ( 2.1 )] . IBTROZI is a kinase inhibitor indicated for the treatment of adult patients with locally advanced or metastatic ROS1 -positive non-small cell lung cancer (NSCLC). ( 1 )

Dosage

2 DOSAGE AND ADMINISTRATION Select patients for the treatment of locally advanced or metastatic NSCLC based on the presence of ROS1 rearrangement(s). ( 2.1 ) Recommended Dosage: 600 mg orally once daily on an empty stomach (no food intake at least 2 hours before and 2 hours after taking IBTROZI). ( 2.3 ) Continue treatment until disease progression or unacceptable toxicity. ( 2.3 ) 2.1 Patient Selection Select patients for the treatment of locally advanced or metastatic NSCLC with IBTROZI based on the presence of ROS1 rearrangement(s) in tumor specimens [see Clinical Studies ( 14.1 )] . An FDA-approved test to detect ROS1 rearrangement(s) for selecting patients for treatment with IBTROZI is not currently available.

Side Effects

6 ADVERSE REACTIONS The following adverse reactions are discussed in greater detail in the WARNINGS AND PRECAUTIONS section: Hepatotoxicity [see Warnings and Precautions ( 5.1 )] Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions ( 5.2 )] QTc Interval Prolongation [see Warnings and Precautions ( 5.3 )] Hyperuricemia [see Warnings and Precautions ( 5.4 )] Myalgia with Creatine Phosphokinase Elevation [see Warnings and Precautions ( 5.5 )] Skeletal fractures [see Warnings and Precautions ( 5.6 )] The most frequently reported adverse reactions (≥20%) were: diarrhea, nausea, vomiting, dizziness, rash, constipation, and fatigue.

Interactions

7 DRUG INTERACTIONS Strong and Moderate CYP3A inhibitors : Avoid concomitant use. ( 7.1 ) Strong and Moderate CYP3A inducers: Avoid concomitant use. ( 7.1 ) Gastric Acid Reducing Agents: Avoid concomitant use with proton pump inhibitors (PPIs) and H2 receptor antagonists. If an acid-reducing agent cannot be avoided, administer IBTROZI 2 hours before or 2 hours after taking a locally acting antacid. ( 7.1 ) Drugs That Prolong the QTc Interval: Avoid concomitant use. ( 7.2 ) 7.1 Effects of Other Drugs on IBTROZI Strong and Moderate CYP3A Inhibitors Avoid concomitant use with strong or moderate CYP3A inhibitors. Taletrectinib is a CYP3A substrate.

Warnings

5 WARNINGS AND PRECAUTIONS Hepatotoxicity: Monitor liver function tests prior to initiating, every 2 weeks during the first 2 months of treatment, then monthly thereafter as clinically indicated, with more frequent testing in patients who develop transaminase elevations. Based on severity and resolution, withhold and then resume at reduced dose, or permanently discontinue. ( 2.4 , 5.1 ) Interstitial Lung Disease (ILD)/Pneumonitis: Monitor patients for new or worsening pulmonary symptoms indicative of ILD/pneumonitis. Immediately withhold in patients with suspected ILD/pneumonitis. Based on severity and resolution, resume at the same or reduced dose, or permanently discontinue. 4 CONTRAINDICATIONS None. None ( 4 )

Pregnancy

8.1 Pregnancy Risk Summary Based on literature reports in humans with congenital mutations leading to changes in TRK signaling, findings from animal studies, and its mechanism of action [see Clinical Pharmacology ( 12.1 )] , IBTROZI can cause fetal harm when administered to a pregnant woman. Limited data from case reports with IBTROZI used in pregnant women are insufficient to inform a drug-associated risk of adverse developmental outcomes.

Storage

16 HOW SUPPLIED/STORAGE AND HANDLING IBTROZI is supplied as 200 mg, Size 0 white opaque hard capsules imprinted with “TAL” and “200” in blue ink in bottles of 30 capsules (NDC 84651-200-30) in a carton containing three bottles of 30 count for a total of 90 capsules per carton (NDC 84651-200-93).

Frequently Asked Questions

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Medical Disclaimer

This drug information is for educational purposes only and should not replace professional medical advice. Drug information is sourced from the FDA National Drug Code Directory and Structured Product Labeling. Always consult with a healthcare provider before starting, stopping, or changing any medication.