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Estudo GRAVITAS demonstra que uma estratégia de tratamento uniforme de duplicação da dose padrão de Plavix não melhora resultados pós-ICP
  • Latin America - español
  • USA - English

Maior taxa de eventos cardíacos em pacientes com maior reatividade plaquetária residual, mensurada pelo teste VerifyNow P2Y12


News provided by

Accumetrics, Inc.

Nov 16, 2010, 12:52 ET

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SAN DIEGO, 16 de novembro de 2010 /PRNewswire/ -- A Accumetrics, Inc., desenvolvedora e comercializadora do VerifyNow® System, anunciou hoje que o Estudo GRAVITAS (resposta de aferição com um impacto de ensaio VerifyNow em trombose e segurança) concluiu que, em pacientes com alta reatividade plaquetária residual, a duplicação da dose de manutenção do clopidogrel não reduziu o risco de novos eventos isquêmicos após intervenção coronária percutânea (ICP). O estudo também mostrou que pacientes com alta reatividade plaquetária residual, mensurada pelo teste VerifyNow P2Y12, demonstraram quase o dobro do risco de eventos isquêmicos comparados aos pacientes sem alta reatividade plaquetária residual. O Teste VerifyNow P2Y12 é usado para medir o efeito antiplaquetário de medicamentos, tais como o clopidogrel ou o prasugrel (Plavix® e Effient®) que reduzem a reatividade plaquetária pelo bloqueio do receptor plaquerário P2Y12.

Matthew J. Price, MD, do Scripps Translational Science Institute e da Clínica Scripps em La Jolla, Califórnia, e Investigador Principal do estudo GRAVITAS, apresentou os resultados durante a American Heart Association Scientific Sessions Late-Breaking Clinical Trials, em Chicago. "Os resultados da GRAVITAS não apoiam uma estratégia de tratamento uniforme de dose elevada de clopidogrel em pacientes com alta reatividade plaquetária residual baseada em um único teste de função plaquetária após implante de stent. Isto é importante porque muitos médicos atualmente utilizam uma estratégia de dobrar a dose do clopidogrel na manhã seguinte ao procedimento stent," comentou o Dr. Price. "As terapias alternativas ou o teste de um paciente várias vezes para tratar uma meta específica de reatividade merecem consideração."

"O estudo GRAVITAS fornece uma evidência adicional da associação entre a elevada reatividade plaquetária residual, por vezes referida como não-resposta, com a ocorrência de eventos cardiovasculares. O estudo demonstrou uma forte tendência de maior risco de eventos isquêmicos em não-respondedores, o qual é consistente com relatórios anteriores," comentou Jeffrey R. Dahlen, PhD, Vice-Presidente de Assuntos Clínicos e Regulatórios da Accumetrics. "Como nós ainda iremos analisar os dados, esperamos divulgar outras informações que continuam a apoiar o valor do teste de função plaquetária."

"A GRAVITAS continua a posicionar a Accumetrics como líder de diagnóstico que investe na promoção da compreensão clínica de tratamento individualizado para pacientes com doenças cardiovasculares," disse Timothy I. Still, Presidente e CEO da Accumetrics. "Este estudo destaca a importância da avaliação contínua da resposta à terapia antiplaquetária já que os médicos consideram diversas estratégias de tratamento."

O VerifyNow System é o primeiro sistema point-of-care rápido e fácil de usar para medir a reatividade plaquetária para múltiplos agentes antiplaquetários. O Sistema é largamente utilizado em várias situações clínicas em que medicamentos antiplaquetários são prescritos para reduzir a ocorrência de futuros eventos trombóticos, tais como ataque cardíaco e derrame. O clopidogrel é um agente antiplaquetário oral vendido sob a marca Plavix.

Sobre o Estudo GRAVITAS

O conceito de variabilidade na resposta à terapia antiplaquetária tem se consolidado. O que também se demonstra com maior freqüência é que a reatividade plaquetária residual elevada está associada aos resultados insatisfatórios dos pacientes. A Accumetrics reconheceu a necessidade de um estudo especifico para explorar estratégias de tratamento possível para aqueles pacientes que apresentam uma resposta insatisfatória à terapia antiplaquetária. Como resultado, o estudo GRAVITAS é o primeiro estudo multicêntrico e controlado por placebo para determinar se a dose de manutenção elevada na terapia de clopidogrel com base nos resultados do Teste VerifyNow P2Y12 da empresa reduz eventos isquêmicos pós-ICP. O estudo foi coordenado pelo Scripps Advanced Clinical Trials.

Sobre a Accumetrics

A Accumetrics se compromete com o avanço do conhecimento médico da função plaquetária e com a melhoria de qualidade no tratamento dos pacientes que recebem terapias antiplaquetárias, proporcionando os principais exames de diagnóstico da indústria de modo amplamente acessível para a rápida avaliação da função plaquetária.

O VerifyNow System da Accumetrics é a primeira plataforma rápida e fácil de utilizar que avalia a resposta de um indivíduo a múltiplos agentes antiplaquetários.  Estando direcionado aos principais fármacos antiplaquetários, incluindo os produtos aprovados pela FDA para aspirina, inibidores P2Y12 (p.ex., prasugrel (Effient®) e clopidogrel (Plavix®)), e os inibidores GP IIb/IIIa (p.ex. ReoPro® e Integrilin®), o VerifyNow System proporciona uma ferramenta valiosa que ajuda os médicos a tomar decisões de tratamento com maior fundamento. Para obter mais informações sobre a empresa e seus produtos, visite www.accumetrics.com.

O logotipo da Accumetrics e VerifyNow são marcas registradas da Accumetrics, Inc. ReoPro é uma marca registrada da Centocor, Inc. Integrilin é uma marca registrada da Millennium Pharmaceuticals. Plavix é uma marca registrada da sanofi-aventis. Effient é uma marca registrada da Eli Lilly and Company.

CONTATOS:

Megan Rusnack

Lippert Heilshorn & Associates

212-838-3777

[email protected]


Timothy I. Still

Presidente e CEO da Accumetrics

858-404-8260

[email protected]

FONTE  Accumetrics, Inc.

FONTE Accumetrics, Inc.

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