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Cetuximabe da Merck Serono aumenta significativamente a sobrevida em 7,5 meses para pacientes com CCRm RAS selvagem quando comparado ao bevacizumabe: Nova análise do estudo FIRE-3 do AIO

Novos dados de uma análise pré-planejada do estudo de FIRE-3 mostram aumento na sobrevida global mediana (SGm) de 25,6 para 33,1 meses (p = 0,011) em pacientes de CCRm com tumores RAS selvagem recebendo FOLFIRI mais cetuximabe na 1a linha em comparação a pacientes que receberam o FOLFIRI mais bevacizumabe.

No grupo com qualquer mutação RAS, os pacientes que receberam em primeira linhacetuximabe alcançaram SGm de 20,3 meses versus 20,6 meses no grupo que foi tratado com bevacizumabe (p = 0,60).


News provided by

Merck Serono

Oct 03, 2013, 04:11 ET

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DARMSTADT, Alemanha  e AMSTERDAM, 3 de outubro de 2013 /PRNewswire/ -- Merck Serono, divisão biofarmacêutica da Merck, anunciou hoje que o grupo investigador cooperativo alemão AIO,(ArbeitsgemeinschaftInternistischeOnkologie) apresentou novos dados do estudo clínico defase III,cabeça-a-cabeça, FIRE-3, o qual mostrou melhora clinicamente relevante de cetuximabemais FOLFIRI versus bevacizumabemais FOLFIRI no tratamento em primeira linha do câncer colorretal metastático (CCRm) em pacientes com tumores RAS selvagem.1

Os novos dados, a partir de uma análise exploratória pré-planejada, foram apresentados no Congresso Europeu de Câncer 2013 (ECCO-ESMO-ESTRO). A análise demonstra aumento de 7,5 meses na sobrevida global mediana em pacientes com CCRm com tumores RAS selvagem (n=342), definido como não apresentando mutações nos exon2, 3 e 4 do KRAS e NRAS), recebendo FOLFIRI mais cetuximabe na 1ª linha em comparação a pacientes que receberam FOLFIRI mais bevacizumabe (SGm: 33,1 meses versus 25,6 meses, respectivamente; razão de risco [HR]: 0,70; p = 0,011). Em uma análise post hoc, no grupo de pacientes com qualquer mutação RAS (n = 178), os pacientes que receberam na 1ª linha FOLFIRI mais cetuximabe alcançaram SGm de 20,3 meses versus 20,6 meses no grupo que foi tratado com FOLFIRI mais bevacizumabe (HR: 1,09; 95% IC 0,78–1,52; p = 0,60).1

Conforme apresentado anteriormente na reunião anual da Sociedade Americana de Oncologia Clínica (ASCO) 2013 e no Congresso Mundial sobre Câncer Gastrointestinal 2013, o objetivo primário do estudo, a taxa de resposta objetiva baseada na leitura dos investigadores, em pacientes com tumores KRASexon2selvagem, não foi atingido2,3. No grupo de pacientes com tumores KRAS exon2 selvagem, foi observado um cruzamento esperado e equilibrado ou continuação além da progressão no que diz respeito a tratamentos biológicos subsequentes em terapia de 2ª linha (sejam anticorpos anti-receptor para fator de crescimento epidérmico (EGFR) ou bevacizumabe). Também não foram observados grandes desequilíbrios no que diz respeito a quimioterapias usadas no tratamento em segunda linha. É importante notar que este resultado não está totalmente maduro (taxa de evento de 57% na população com intenção de tratamento com KRAS exon2 selvagem) e será atualizado no devido tempo.2

"Esses novos dados do estudo de fase III FIRE-3 apresentam aumento de sobrevida global mediana de 7,5 meses chegando a 33,1 meses no câncer colorretal metastático quando utilizado cetuximabe mais FOLFIRI na primeira linha em comparação ao uso de FOLFIRI mais bevacizumabe. Tal aumento representa uma mudança de paradigma no tratamento do CCRm, desde a introdução dos anticorpos monoclonais", disse o Professor VolkerHeinemann da Universidade Ludwig-Maximilians de Munique e investigador principal do FIRE-3. "Juntamente com insights de outros estudos recentes e relevantes, estes resultados sugerem que o tratamento em 1ª linha em pacientes com tumores RAS selvagem deve incluir uma terapia anti-EGFR."

"Estes resultados continuam reforçando o valor de cetuximabe como tratamento de primeira linha para o câncer colorretal metastático e demonstra que a determinação do estado do RAS ajuda identificar os pacientes que são mais suscetíveis de serem beneficiados pelo uso do cetuximabe," disse a Dra. Annalisa Jenkins, Chefe de Desenvolvimento de Drogas e Remédios em Geral da Merck Serono. "Análises de biomarcadores adicionais estão sendo realizadas em estudos centrais do cetuximabe, CRYSTAL e OPUS, a fim de elucidar ainda mais o papel das mutações RAS nestes pacientes."

Leia aqui o release completo.

Mais informações:

Cristiane Santos
[email protected] 
11 3587 1226 / 11 99623-5838

Anatricia Borges
[email protected] 
21 3897 6406

FONTE Merck Serono

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