Effect of severe renal impairment on the pharmacokinetics of brigatinib.

Abstract

Background Brigatinib, a next-generation anaplastic lymphoma kinase (ALK) inhibitor, targets activated, mutant forms of ALK and overcomes mechanisms of resistance to the ALK inhibitors crizotinib, ceritinib, and alectinib. Brigatinib is approved in multiple countries for treatment of patients with ALK-positive non-small cell lung cancer. Based on population pharmacokinetic (PK) analyses, no dosage adjustment is required for patients with mild or moderate renal impairment. Methods An open-label, single-dose study was conducted to evaluate the PK of brigatinib (90 mg) in patients with severe renal impairment (estimated glomerular filtration rate < 30 mL/min/1.73 m2; n = 8) and matched healthy volunteers with normal renal function (estimated glomerular filtration rate ≥ 90 mL/min/1.73 m2; n = 8). Plasma and urine were collected for the determination of plasma protein binding and estimation of plasma and urine PK parameters. Results Plasma protein binding of brigatinib was similar between patients with severe renal impairment (92 % bound) and matched healthy volunteers with normal renal function (91 % bound). Unbound brigatinib exposure (area under the plasma concentration-time curve from time zero to infinity) was approximately 92 % higher in patients with severe renal impairment compared with healthy volunteers with normal renal function. The renal clearance of brigatinib in patients with severe renal impairment was approximately 20 % of that observed in volunteers with normal renal function. Conclusions These findings support a brigatinib dosage reduction of approximately 50 % in patients with severe renal impairment.Trial registry: Not applicable.

• Authors: Neeraj Gupta, Michael J Hanley, David Kerstein, Meera Tugnait, Narayana Narasimhan, Thomas C Marbury, Karthik Venkatakrishnan
• Journal: Investigational new drugs (Invest New Drugs) Vol. 39 Issue 5 Pg. 1306-1314 (10 2021) ISSN: 1573-0646 [Electronic] United States
• PMID: 33742299 (Publication Type: Clinical Trial, Phase I, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2021. The Author(s).

Chemical References

• Organophosphorus Compounds
• Pyrimidines
• Anaplastic Lymphoma Kinase
• brigatinib

Topics

• Aged
• Anaplastic Lymphoma Kinase (antagonists & inhibitors)
• Area Under Curve
• Female
• Glomerular Filtration Rate
• Half-Life
• Humans
• Male
• Metabolic Clearance Rate
• Middle Aged
• Organophosphorus Compounds (blood, pharmacokinetics, urine)
• Patient Acuity
• Protein Binding (physiology)
• Pyrimidines (blood, pharmacokinetics, urine)
• Renal Insufficiency (metabolism)