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Lokelma for the treatment of adults with hyperkalaemia: approved in European Union


The European Commission has granted marketing authorisation for Lokelma ( formerly ZS-9, sodium Zirconium cyclosilicate ) for the treatment of adults with hyperkalaemia.
Hyperkalaemia is a serious condition characterised by elevated potassium levels in the blood associated with cardiovascular, renal and metabolic diseases.

Lokelma is a highly-selective, oral potassium-removing agent.
The approval is supported by data from three double-blind, placebo-controlled trials and one open-label trial, where patients with hyperkalaemia were treated for up to 12 months.
In these trials, for patients receiving Lokelma the median time to achieving normal potassium levels in the blood was 2.2 hours, with 98% achieving normal levels within 48 hours from baseline.
Lokelma also demonstrated sustained potassium control for up to one year.

The risk of hyperkalaemia increases significantly for patients with chronic kidney disease ( CKD ) and for those who take common life-saving medications for heart failure, such as renin-angiotensin-aldosterone system ( RAAS ) inhibitors, which can increase potassium in the blood.
To help prevent the recurrence of hyperkalaemia, RAAS-inhibitor therapy is often modified or discontinued; this can, however, compromise cardio-renal outcomes and increase the risk of death.

Hyperkalaemia

The risk of hyperkalaemia increases significantly for patients with CKD and for those who take common medications for heart failure, such as RAAS inhibitors, which can increase potassium in the blood.
Hyperkalaemia occurs in 23% to 47% of patients with chronic kidney disease and/or heart failure, with an estimated 200 million and 38 million people, respectively, living with each condition worldwide.
Hyperkalaemia may lead to cardiac arrest and death, with mortality being up to 30% in patients with severe hyperkalaemia, if not treated rapidly.

Lokelma

Lokelma is an insoluble, non-absorbed sodium Zirconium silicate, formulated as a powder for oral suspension, that acts as a highly-selective potassium-removing agent.
It is administered orally, is odourless, tasteless and stable at room temperature.
It has been studied in three double-blind, placebo-controlled trials and in one 12-month open label clinical trial in patients with hyperkalaemia.
The recommended starting dose of Lokelma is 10g, administered three times daily. Once normokalaemia ( normal potassium levels in the blood ) has been achieved, a maintenance dose of 5g once daily is recommended with possible titration up to 10g daily or down to 5g once every other day to maintain a normal potassium level. ( Xagena )

Source: AstraZeneca, 2018

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