Gastrointestinal cancer research : GCR · 2013
Above-Label Doses of Octreotide-LAR in Patients With Metastatic Small Intestinal Carcinoid Tumors.
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Strosberg Jonathan, Weber Jill, Feldman Max, Goldman Jamie, Almhanna Khaldoun, Kvols Larry
Аннотация
BACKGROUND: Octreotide LAR is indicated for treatment of malignant carcinoid syndrome and has been studied at doses of 10 to 30 mg intramuscularly every 4 weeks. In clinical practice, higher doses are often prescribed for patients who experience refractory carcinoid syndrome (flushing and/or diarrhea) or tumor growth while on the maximum label-recommended dose.
METHODS: We performed a retrospective, longitudinal review of octreotide LAR administration at a tertiary institution to determine the frequency of above-label dosing and outcomes.
RESULTS: Three hundred thirty-eight patients were considered evaluable, among whom 100 (30%) underwent at least 1 increase in dose or frequency of octreotide-LAR above the standard label dose. The most common maximum doses were 40 mg every 4 weeks (n = 37 patients), 60 mg every 4 weeks (n = 34), and 30 mg every 3 weeks (n = 18). The indications for dose increase were worsening carcinoid syndrome (n = 60), radiographic progression (n = 33), and rising urine 5-HIAA (n = 6). Of the patients whose doses were increased for refractory carcinoid syndrome, 62% (n = 34) experienced improvement in diarrhea, and 56% (n = 28) experienced improvement in flushing.
CONCLUSIONS: In conclusion, octreotide LAR is commonly prescribed in doses or schedules above the recommended dose and frequency. Patients with refractory carcinoid syndrome appear to experience a clinical benefit from this change. Prospective data may be used to further evaluate this strategy.
METHODS: We performed a retrospective, longitudinal review of octreotide LAR administration at a tertiary institution to determine the frequency of above-label dosing and outcomes.
RESULTS: Three hundred thirty-eight patients were considered evaluable, among whom 100 (30%) underwent at least 1 increase in dose or frequency of octreotide-LAR above the standard label dose. The most common maximum doses were 40 mg every 4 weeks (n = 37 patients), 60 mg every 4 weeks (n = 34), and 30 mg every 3 weeks (n = 18). The indications for dose increase were worsening carcinoid syndrome (n = 60), radiographic progression (n = 33), and rising urine 5-HIAA (n = 6). Of the patients whose doses were increased for refractory carcinoid syndrome, 62% (n = 34) experienced improvement in diarrhea, and 56% (n = 28) experienced improvement in flushing.
CONCLUSIONS: In conclusion, octreotide LAR is commonly prescribed in doses or schedules above the recommended dose and frequency. Patients with refractory carcinoid syndrome appear to experience a clinical benefit from this change. Prospective data may be used to further evaluate this strategy.