Exposure-response analysis of alectinib in crizotinib-resistant ...
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Alectinib demonstrated robust efficacy in a pooled analysis of two single-arm, open-label phase II studies (NP28673, NCT01801111; NP28761, NCT01871805) in ...
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Exposure-responseanalysisofalectinibincrizotinib-resistantALK-positivenon-smallcelllungcancer.
CancerChemotherapyandPharmacology
(
IF
3.288
)
PubDate : 2018-05-12
,DOI:
10.1007/s00280-018-3597-5
PeterNMorcos
1
,
EvelineNueesch
2
,
FelixJaminion
3
,
ElenaGuerini
3
,
JoyCHsu
1
,
WalterBordogna
2
,
BogdanaBalas
2
,
FrancoisMercier
3
Affiliation
RocheInnovationCenterNewYork,NewYork,NY,USA.
F.Hoffmann-LaRocheLtd,Basel,Switzerland.
RocheInnovationCenterBasel,Basel,Switzerland.
PURPOSE
Alectinibisaselectiveandpotentanaplasticlymphomakinase(ALK)inhibitorthatisactiveinthecentralnervoussystem(CNS).Alectinibdemonstratedrobustefficacyinapooledanalysisoftwosingle-arm,open-labelphaseIIstudies(NP28673,NCT01801111;NP28761,NCT01871805)incrizotinib-resistantALK-positivenon-small-celllungcancer(NSCLC):medianoverallsurvival(OS)29.1months(95%confidenceinterval[CI]:21.3-39.0)foralectinib600mgtwicedaily(BID).Weinvestigatedexposure-responserelationshipsfromfinalpooledphaseIIOSandsafetydatatoassessalectinibdoseselection.
METHODS
Asemi-parametricCoxproportionalhazardsmodelanalyzedrelationshipsbetweenindividualmedianobservedsteady-statetroughconcentrations(Ctrough,ss)forcombinedexposureofalectinibanditsmajormetabolite(M4),baselinecovariates(demographicsanddiseasecharacteristics)andOS.UnivariatelogisticregressionanalysisanalyzedrelationshipsbetweenCtrough,ssandincidenceofadverseevents(AEs:seriousandGrade ≥ 3).
RESULTS
Overall,92%ofpatients(n = 207/225)hadCtrough,ssdataandwereincludedintheanalysis.NostatisticallysignificantrelationshipwasfoundbetweenCtrough,ssandOSfollowingalectinibtreatment.TheonlybaselinecovariatesthatstatisticallyinfluencedOSwerebaselinetumorsizeandpriorcrizotinibtreatmentduration.LargerbaselinetumorsizeandshorterpriorcrizotinibtreatmentwerebothassociatedwithshorterOS.LogisticregressionconfirmednosignificantrelationshipbetweenCtrough,ssandAEs.
CONCLUSION
Alectinib600mgBIDprovidessystemicexposuresatplateauofresponseforOSwhilemaintainingawell-toleratedsafetyprofile.Thisanalysisconfirmsalectinib600mgBIDastherecommendedglobaldoseforpatientswithcrizotinib-resistantALK-positiveNSCLC.
中文翻译:
艾乐替尼在耐克唑替尼的ALK阳性非小细胞肺癌中的暴露反应分析。
目的Alectinib是一种选择性和有效的间变性淋巴瘤激酶(ALK)抑制剂,在中枢神经系统(CNS)中活跃。
在两项两项单臂开放标签II期研究(NP28673,NCT01801111;NP28761,NCT01871805)的汇总分析中,艾来替尼在耐克唑替尼耐药的ALK阳性非小细胞肺癌(NSCLC)的合并分析中显示出强大的疗效:中位总体生存(OS)2个月每天两次(BID)600毫克艾来替尼(22.9个月)(95%置信区间[CI]:21.3-39.0)。
我们从最终合并的II期OS和安全性数据中研究了暴露-反应关系,以评估艾乐替尼的剂量选择。
方法采用半参数Cox比例风险模型分析了艾乐替尼及其主要代谢物(M4)联合暴露的各个观察到的中位数稳态谷浓度(Ctrough,ss)之间的关系,基线协变量(人口统计学和疾病特征)和OS。
单因素逻辑回归分析分析了Ctrough,ss与不良事件发生率之间的关系(不良事件:严重且≥3级)。
结果总体而言,有92%的患者(n=207/225)具有Ctrough,ss数据并被纳入分析。
在艾乐替尼治疗后,Ctrough,ss和OS之间未发现统计学上的显着关系。
在统计学上影响OS的唯一基线协变量是基线肿瘤大小和以前的克唑替尼治疗持续时间。
更大的基线肿瘤大小和较早的克唑替尼治疗都与较短的OS有关。
Logistic回归证实Ctrough,ss和AE之间无显着关系。
结论Alectinib600mgBID可在OS反应平台达到全身暴露,同时保持良好耐受的安全性。
这项分析证实了艾来替尼600mgBID作为耐克唑替尼的ALK阳性NSCLC患者的推荐总体剂量。
更新日期:2019-11-01
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