Compound 

 

ALIQOPA is supplied in single-dose vials as a sterile lyophilized solid for reconstitution and further dilution for intravenous infusion. The product is white to slightly yellowish. After reconstitution, the solution is colorless to slightly yellowish. Each vial contains 60 mg copanlisib free base (equivalent to 69.1 mg copanlisib dihydrochloride). After reconstitution, each mL contains 15 mg copanlisib free base (equivalent to 17.3 mg copanlisib dihydrochloride).

 

Inactive ingredients: Citric acid anhydrous, mannitol, sodium hydroxide.

 

12 CLINICAL PHARMACOLOGY 

 

12.1 Mechanism of Action 

 

Copanlisib is an inhibitor of phosphatidylinositol-3-kinase (PI3K) with inhibitory activity predominantly against PI3K-α and PI3K-δ isoforms expressed in malignant B cells. Copanlisib has been shown to induce tumor cell death by apoptosis and inhibition of proliferation of primary malignant B cell lines. Copanlisib inhibits several key cell-signaling pathways, including B-cell receptor (BCR) signaling, CXCR12 mediated chemotaxis of malignant B cells, and NFκB signaling in lymphoma cell lines.

 

12.2 Pharmacodynamics 

 

At 60 mg (or 0.8 mg/kg) of ALIQOPA dose, the elevation of plasma glucose was associated with higher copanlisib exposure. 

 

12.3 Pharmacokinetics 

 

The area under the plasma concentration-time curve (AUC) and maximum plasma concentration (Cmax) of ALIQOPA increase dose-proportionally over 5 to 93 mg (0.08 to 1.55 times the approved recommended dose) absolute dose range and exhibit linear pharmacokinetics. There is no time-dependency and no accumulation in the pharmacokinetics of copanlisib. 

 

The geometric mean (range) steady state copanlisib exposure at 0.8 mg/kg (approximately the approved recommended dose of 60 mg) are 463 (range: 105 to 1670; SD: 584) ng/mL for Cmax and 1570 (range: 536 to 3410; SD: 338) ng.hr/mL for AUC0-25h. 

 

Distribution 

 

The in vitro human plasma protein binding of copanlisib is 84.2%. Albumin is the main binding protein. The in vitro mean blood-to-plasma ratio is 1.7 (range: 1.5 to 2.1). The geometric mean volume of distribution is 871 (range: 423 to 2150; SD: 479) L. 

 

Elimination 

 

The geometric mean terminal elimination half-life of copanlisib is 39.1 (range: 14.6 to 82.4; SD: 15.0) hours. The geometric mean clearance is 17.9 (range: 7.3 to 51.4; SD: 8.5) L/hr. 

 

Metabolism 

 

Approximately >90% of copanlisib metabolism is mediated by CYP3A and <10% by CYP1A1. The M-1 metabolite accounts for 5% of total radioactivity AUC and its pharmacological activity is comparable to the parent compound copanlisib for the tested kinases PI3KandPI3K.

 

Excretion