Eliglustat, an oral substrate reduction therapy, is a first-line therapy for adults with Gaucher disease type 1 and a compatible CYP2D6 metabolizer phenotype. Clinicians have requested more information about frequency, timing, and duration of adverse events associated with eliglustat. Adverse event data as of January 31, 2013 for all patients who received at least one dose of eliglustat were pooled from four eliglustat clinical trials (393 patients representing 535 patient-years of exposure). The following 10 adverse events noted in the eliglustat US Prescribing Information (USPI) and EU Summary of Product Characteristics (SmPC) were evaluated with regard to frequency, drug-relatedness, severity, seriousness, duration, and timing of onset: headache, arthralgia, diarrhea, nausea, fatigue, flatulence, abdominal pain, upper abdominal pain, back pain, and extremity pain. Of 393 patients, 334 experienced one or more adverse events. Most patients (92%) continued taking eliglustat; 3% withdrew from a trial due to an adverse event. Among the 10 adverse events evaluated, none was reported as serious and none resulted in discontinuing treatment; most were mild or moderate, reported only once, and not considered eliglustat-related. The majority of adverse events noted in the eliglustat USPI and SmPC were non-serious, occasional, non-severe, and did not lead to drug discontinuation.
