Department of Neurology, Seoul National University College of Medicine, Seoul National University Hospital, 101 Daehak-ro, Jongno-Gu, Seoul, 03080, South Korea.
Department of Neurology, Yonsei University College of Medicine, Severance Hospital, 50-1 Yonsei-ro, Seodaemun-gu, Seoul, 03722, South Korea.
Adv Ther. 2021 Jul;38(7):4082-4099. doi: 10.1007/s12325-021-01816-5. Epub 2021 Jun 21.
The aim was to evaluate the efficacy and tolerability of adjunctive brivaracetam (BRV) in adults with severely drug-resistant focal seizures versus adults with less drug-resistant disease.
Data were pooled from patients with focal seizures on 1-2 concomitant antiseizure medications (ASMs) randomized to BRV 50, 100, 200 mg/day, or placebo in 3 phase 3 trials (N01252 [NCT00490035], N01253 [NCT00464269], and N01358 [NCT01261325]) with a 12-week treatment period. Outcomes were assessed in patients with ≥ 5 and 0-4 previous ASMs (stopped before trial drug initiation).
In ≥ 5 previous ASMs subgroup (BRV 50, 100, 200 mg/day: n = 26, n = 137, n = 120; placebo: n = 151), percentage reduction over placebo in 28-day adjusted focal seizure frequency was 13.0% for 50 mg/day (p = 0.38), 18.1% for 100 mg/day (p = 0.006), 19.8% for 200 mg/day (p = 0.004), and 17.0% for all BRV-treated patients (p = 0.001). The 50% responder rate was 26.9%, 29.9%, 30.0%, and 29.7% for BRV 50, 100, 200, and 50-200 mg/day, respectively (placebo: 13.2%); odds ratios versus placebo were statistically significant (p < 0.05) for BRV 100, 200, and 50-200 mg/day. In 0-4 previous ASMs subgroup (BRV 50, 100, 200 mg/day: n = 135, n = 195, n = 129; placebo: n = 267), all BRV dosages showed statistically significant (1) percentage reduction over placebo in 28-day adjusted focal seizure frequency (21.4-28.7%); (2) differences from placebo in median percentage reduction in 28-day adjusted focal seizure frequency from baseline (35.5-45.9%; placebo: 21.3%); and (3) odds ratios versus placebo (favoring BRV) for 50% responder rates. In BRV-treated patients, treatment-emergent adverse event (TEAE) incidence (73.8% [217/294] vs. 64.6% [329/509]) and discontinuation due to TEAEs (10.5% vs. 4.5%) were higher in the ≥ 5 versus 0-4 previous ASMs subgroup; serious TEAEs were rare in both subgroups (≥ 5 previous ASMs: 3.1%; 0-4 previous ASMs: 2.9%).
Adjunctive BRV showed efficacy and was generally well tolerated in adults with focal seizures independent of the number of previous ASMs.
本研究旨在评估辅助使用溴维曲坦(BRV)治疗药物反应严重的局灶性癫痫成人患者(n=50、100、200mg/天)与药物反应较轻的患者(n=137、120)的疗效和耐受性。
共有来自 3 项 3 期临床试验(N01252[NCT00490035]、N01253[NCT00464269]和 N01358[NCT01261325])的患者纳入研究,这些患者正在服用 1-2 种抗癫痫药物,随机接受 BRV 50、100、200mg/天或安慰剂治疗,疗程 12 周。评估在有≥5 次(BRV 50、100、200mg/天:n=26,n=137,n=120;安慰剂:n=151)和 0-4 次(BRV 50、100、200mg/天:n=135,n=195,n=129;安慰剂:n=267)抗癫痫药物治疗史的患者中,28 天调整后的局灶性癫痫发作频率相对于安慰剂的降低百分比。
在有≥5 次抗癫痫药物治疗史的患者亚组中,BRV 50、100、200mg/天组的 28 天调整后局灶性癫痫发作频率相对于安慰剂的降低百分比分别为 13.0%(p=0.38)、18.1%(p=0.006)、19.8%(p=0.004)和 17.0%(p=0.001);BRV 所有治疗组的 50%应答率分别为 26.9%、29.9%、30.0%和 29.7%(安慰剂:13.2%),BRV 100、200 和 50-200mg/天的比值比与安慰剂相比均有统计学意义(p<0.05)。在有 0-4 次抗癫痫药物治疗史的患者亚组中,BRV 50、100、200mg/天组的 28 天调整后局灶性癫痫发作频率相对于安慰剂的降低百分比分别为 21.4%(p<0.001)、28.7%(p<0.001)、21.4%(p<0.001);从基线到 28 天调整后局灶性癫痫发作频率的中位数降低百分比(35.5%-45.9%;安慰剂:21.3%);BRV 50%应答率的比值比(有利于 BRV)。在 BRV 治疗患者中,治疗期不良事件(TEAE)发生率(73.8%[217/294]vs.64.6%[329/509])和因 TEAEs 而停药(10.5%vs.4.5%)在有≥5 次与 0-4 次抗癫痫药物治疗史的患者亚组中较高;两个亚组均很少发生严重 TEAEs(≥5 次抗癫痫药物治疗史:3.1%;0-4 次抗癫痫药物治疗史:2.9%)。
辅助使用溴维曲坦治疗局灶性癫痫成人患者,不论抗癫痫药物治疗史的数量如何,均具有疗效且总体耐受性良好。