乳腺癌术后曲妥珠单抗治疗的长期复发
2021-11-9 来源:本站原创 浏览次数:次白癜风的危害 https://m-mip.39.net/nk/mipso_4359087.html
既往研究已经证实,对于激素受体阳性HER2阴性乳腺癌,手术后5年复发风险相对较高,延长内分泌辅助治疗可能获益。虽然激素受体阳性HER2阴性乳腺癌的长期复发风险已经明确,但是HER2阳性乳腺癌术后曲妥珠单抗辅助化疗的长期复发风险尚不明确。
年10月17日,美国临床肿瘤学会《临床肿瘤学杂志》在线发表梅奥医学中心、西雅图纳米生物技术、NRG(NSABP、RTOG、GOG)肿瘤学协作组、韩国延世大学的大数据分析报告,合并比较了NCCTGN和NSABPB-31两项随机对照研究共计例HER2阳性乳腺癌患者术后辅助化疗±曲妥珠单抗的长期复发风险。
NCCTGN(DoxorubicinHydrochloride,Cyclophosphamide,andPacltaxelWithorWithoutTrastuzumabinTreatingWomenWithHER2-PositiveNode-PositiveorHigh-RiskNode-NegativeBreastCancer):PhaseIIITrialofDoxorubicinandCyclophosphamide(AC)FollowedbyWeeklyPaclitaxelWithorWithoutTrastuzumabasAdjuvantTreatmentforWomenWithHER-2Over-ExpressingorAmplifiedNodePositiveorHigh-RiskNodeNegativeBreastCancer(NCT)
NSABPB-31(DoxorubicinandCyclophosphamidePlusPaclitaxelWithorWithoutTrastuzumabinTreatingWomenWithNode-PositiveBreastCancerThatOverexpressesHER2):ARandomizedTrialComparingtheSafetyandEfficacyofAdriamycinandCyclophosphamideFollowedbyTaxol(AC-T)toThatofAdriamycinandCyclophosphamideFollowedbyTaxolPlusHerceptin(AC-T+H)inNode-PositiveBreastCancerPatientsWhoHaveTumorsThatOverexpressHER2(NCT)
结果,激素受体阳性与阴性乳腺癌相比,0~5年复发或死亡风险低35%(风险比:0.65,95%置信区间:0.56~0.77,P0.)。
对于接受曲妥珠单抗治疗的HER2阳性患者,激素受体阳性与阴性乳腺癌相比:
0~5年复发或死亡风险低40%(10.96%比17.48%,风险比:0.60,95%置信区间:0.45~0.79,P0.)
5~10年复发或死亡风险相似(风险比:1.32,95%置信区间:0.93~1.88,P=0.12)
激素受体阳性与阴性乳腺癌相比,曲妥珠单抗获益相似(相互作用分析,P=0.87)。
此外,激素受体阳性HER2阳性乳腺癌患者的5~10年复发风险低:
淋巴结阴性(N0)患者:3.23%
1~3个淋巴结阳性(N1)患者:6.39%
因此,该研究结果表明,曲妥珠单抗辅助治疗的获益长期保持。虽然激素受体阳性与阴性相比,HER2阳性乳腺癌的复发风险不同,但是曲妥珠单抗辅助治疗的获益程度相似。激素受体阳性HER2阳性乳腺癌的5~10年复发风险低,尤其对于N0或N1的患者。
JClinOncol.Oct17.[Epubaheadofprint]
IncidenceofLateRelapsesinPatientsWithHER2-PositiveBreastCancerReceivingAdjuvantTrastuzumab:CombinedAnalysisofNCCTGN(Alliance)andNRGOncology/NSABPB-31.
ChumsriS,LiZ,SerieDJ,Mashadi-HosseinA,Colon-OteroG,SongN,Pogue-GeileKL,GavinPG,PaikS,Moreno-AspitiaA,PerezEA,ThompsonEA.
MayoClinic,Jacksonville,FL;NanoString,Seattle,WA;NRGOncology,Pittsburgh,PA;YonseiUniversityCollegeofMedicine,Seoul,Korea.
PURPOSE:Recenttrialshaveshownpotentialbenefitofextendedadjuvantendocrinetherapyandrelativelyhighriskofrecurrence(RoR)after5yearsinhormonereceptor-positive(HR+)humanepidermalgrowthfactorreceptor2-negative(HER2-)breastcancer.AlthoughriskoflaterelapseinHR+HER2-breastcancerisfairlywelldefined,theriskinHER2-positive(HER2+)breastcancertreatedwithadjuvanttrastuzumab-basedchemotherapyremainslargelyunknown.
METHODS:Weincluded3,patientswithHER2+breastcancertreatedwithadjuvantchemotherapyaloneorwithtrastuzumabfromtheNorthCentralCancerTreatmentGroupN(ClinicalTrials.govidentifier:NCT)andNationalSurgicalAdjuvantBreastandBowelProjectB-31(ClinicalTrials.govidentifier:NCT)trials.
RESULTS:Overall,HR+breastcancerwassignificantlyassociatedwithimprovedrecurrence-freesurvival(RFS)duringthefirst5years(hazardratio,0.65;95%CI,0.56to0.77;P.).Amongpatientstreatedwithtrastuzumab,cumulativehazardforRFSwaslowerinpatientswithHR+HER2+breastcancerduringthefirst5years(10.96%v17.48%;hazardratio,0.60;95%CI,0.45to0.79;P.).However,therewasnosignificantdifferenceinRFSbasedonHRstatusduringyears5to10(hazardratio,1.32;95%CI,0.93to1.88;P=.12).A