Outcome for headache and pain-free nonresponders to treatment of the first attack: a pooled post-hoc analysis of four randomized trials of eletriptan 40 mg
Abstract
OBJECTIVE: The objective of this article is to evaluate, in first attack eletriptan headache and pain-free nonresponders, the efficacy of treating a second and third attack with the same dose of eletriptan 40 mg (ELE-40).
METHODS: Data were pooled from four randomized, double-blind, placebo-controlled, multiple attack studies of eletriptan in the treatment of migraine. The first-attack eletriptan headache (HNR) and pain-free (PFNR) nonresponder samples consisted of patients who did not achieve headache or pain-free responses at two hours, or sustained headache or pain-free responses at 24 hours. The efficacy of the same dose of eletriptan (vs placebo; PBO) in treating the second and third attacks was evaluated using a logistic regression model.
RESULTS: Among Attack 1 eletriptan HNRs, treatment with ELE-40 (vs PBO) was associated with significantly higher two-hour headache response and pain-free rates, respectively, on both Attack 2 (48.8% vs 20.2%; 17.0% vs 3.9%; P < 0.0001 for both comparisons) and Attack 3 (37.4% vs 15.5%; 18.8% vs 3.2%; P < 0.0001 for both comparisons). Significantly higher sustained headache response and pain-free rates at 24 hours were also observed on both Attack 2 and Attack 3.
CONCLUSIONS: The results of this pooled analysis suggest that patients who have HNR or PFNR to an initial dose of eletriptan may respond when a second and third attack is treated with the same dose.
How strong is the evidence?
Evidence Hub reads this as a secondary / pooled analysis, done in people. Its evidence level is 3 of 5 (Moderate · trial / cohort / secondary analysis). Trials without a large randomized design, cohorts and secondary analyses give moderate evidence.
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