Lorlatinib

Brand Names: Lorbrena

Drug Class: Kinase Inhibitor

Overview

11 DESCRIPTION LORBRENA (lorlatinib) is a kinase inhibitor for oral administration. The molecular formula is C 21 H 19 FN 6 O 2 (anhydrous form) and the molecular weight is 406.41 Daltons. The chemical name is (10 R )-7-amino-12-fluoro-2,10,16-trimethyl-15-oxo-10,15,16,17-tetrahydro-2 H -4,8-methenopyrazolo[4,3- h ][2,5,11] benzoxadiazacyclotetradecine-3-carbonitrile.

Mechanism of Action

12 CLINICAL PHARMACOLOGY 12.1 Mechanism of Action Lorlatinib is a kinase inhibitor with in vitro activity against ALK and ROS1 as well as TYK1, FER, FPS, TRKA, TRKB, TRKC, FAK, FAK2, and ACK. Lorlatinib demonstrated in vitro activity against multiple mutant forms of the ALK enzyme, including some mutations detected in tumors at the time of disease progression on crizotinib and other ALK inhibitors. In mice subcutaneously implanted with tumors harboring EML4 fusions with either ALK variant 1 or ALK mutations, including the G1202R and I1171T mutations detected in tumors at the time of disease progression on ALK inhibitors, administration of lorlatinib resulted in antitumor activity.

Indications

  • 1 INDICATIONS AND USAGE LORBRENA ® is indicated for the treatment of adult patients with metastatic non-small cell lung cancer (NSCLC) whose tumors are anaplastic lymphoma kinase (ALK)-positive as detected by an FDA-approved test. LORBRENA is a kinase inhibitor indicated for the treatment of adult patients with metastatic non-small cell lung cancer (NSCLC) whose tumors are anaplastic lymphoma kinase (ALK)-positive as detected by an FDA-approved test. ( 1 , 2.1 )

Common Doses

  • 100 mg
  • 50 mg
  • 75 mg
  • 250 mg

Dosage

2 DOSAGE AND ADMINISTRATION Recommended dosage : 100 mg orally once daily. ( 2.2 ) Severe Hepatic Impairment : 50 mg orally once daily. ( 2.5 , 8.6 , 12.3 ) Renal Impairment : 75 mg orally once daily. ( 2.6 , 8.7 , 12.3 ) 2.1 Patient Selection Select patients for the treatment of metastatic NSCLC with LORBRENA based on the presence of ALK positivity in tumor specimens [see Indications and Usage (1) and Clinical Studies (14) ] . Information on FDA-approved tests for the detection of ALK rearrangements in NSCLC is available at http://www.fda.gov/CompanionDiagnostics . 2.

Contraindications

  • 4 CONTRAINDICATIONS LORBRENA is contraindicated in patients taking strong CYP3A inducers, due to the potential for serious hepatotoxicity [see Warnings and Precautions (5.1) ] . Concomitant use with strong CYP3A inducers. ( 4 )

Side Effects

  • 6 ADVERSE REACTIONS The following adverse reactions are described elsewhere in the labeling: • Risk of Serious Hepatotoxicity with Concomitant Use of Strong CYP3A Inducers [see Warnings and Precautions (5.1) ] • Central Nervous System Effects [see Warnings and Precautions (5.2) ] • Hyperlipidemia [see Warnings and Precautions (5.3) ] • Atrioventricular Block [see Warnings and Precautions (5.4) ] • Interstitial Lung Disease/Pneumonitis [see Warnings and Precautions (5.5) ] • Hypertension [see Warnings and Precautions (5.6) ] • Hyperglycemia [see Warnings and Precautions (5.

Interactions

  • 7 DRUG INTERACTIONS • Strong CYP3A Inducers : Contraindicated. ( 2.4 , 7.1 ) • Moderate CYP3A Inducers : Avoid concomitant use. If concomitant use cannot be avoided, increase the LORBRENA dose. ( 2.4 , 7.1 ) • Strong CYP3A Inhibitors : Avoid concomitant use; reduce LORBRENA dose if concomitant use cannot be avoided. ( 2.4 , 7.1 ) • Fluconazole : Avoid concomitant use; reduce LORBRENA dose if concomitant use cannot be avoided. ( 2.4 , 7.1 ) • Certain CYP3A Substrates : Avoid concomitant use with CYP3A substrates for which minimal concentration changes may lead to serious therapeutic failures.