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1.
Ophthalmology ; 119(5): 992-1000, 2012 May.
Artigo em Inglês | MEDLINE | ID: mdl-22424834

RESUMO

PURPOSE: To compare the efficacy and safety of same-day verteporfin photodynamic therapy (PDT) and intravitreal ranibizumab combination treatment versus ranibizumab monotherapy in neovascular age-related macular degeneration. DESIGN: Prospective, multicenter, double-masked, randomized, active-controlled trial. PARTICIPANTS: We included 255 patients with all types of active subfoveal choroidal neovascularization. METHODS: Patients were randomized 1:1 to as-needed (pro re nata; PRN) combination (standard-fluence verteporfin 6 mg/m(2) PDT and ranibizumab 0.5 mg) or PRN ranibizumab monotherapy (sham infusion [5% dextrose] PDT and ranibizumab 0.5 mg). Patients received 3 consecutive monthly injections followed by PRN retreatments based on protocol-specific retreatment criteria. MAIN OUTCOME MEASURES: Mean change in best-corrected visual acuity (BCVA) from baseline to month 12, and the proportion of patients with treatment-free interval ≥3 months at any timepoint after month 2. RESULTS: The mean change in BCVA at month 12 was +2.5 and +4.4 letters in the combination and monotherapy groups, respectively (P = 0.0048; difference: -1.9 letters [95% confidence interval, -5.76 to 1.86], for having achieved noninferiority with a margin of 7 letters). The proportion of patients with a treatment-free interval of ≥3 months at any timepoint after month 2 was high, but did not show a clinically relevant difference between the treatment groups. Secondary efficacy endpoints included the mean number of ranibizumab retreatments after month 2 (1.9 and 2.2 with combination and monotherapy, respectively [P = 0.1373]). The time to first ranibizumab retreatment after month 2 was delayed by 34 days (about 1 monthly visit) with combination (month 6) versus monotherapy (month 5). At month 12, mean ± standard error central retinal thickness decreased by 115.3±9.04 µm in the combination group and 107.7±11.02 µm in the monotherapy group. The mean number of verteporfin/sham PDT treatments was comparable in the 2 groups (combination, 1.7; monotherapy, 1.9). The safety profiles of the 2 groups were comparable, with a low incidence of ocular serious adverse events. CONCLUSIONS: The combination PRN treatment regimen with verteporfin PDT and ranibizumab was effective in achieving BCVA gain comparable with ranibizumab monotherapy; however, the study did not show benefits with respect to reducing the number of ranibizumab retreatment over 12 months. The combination therapy was well tolerated.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Neovascularização de Coroide/tratamento farmacológico , Degeneração Macular/tratamento farmacológico , Fotoquimioterapia , Fármacos Fotossensibilizantes/uso terapêutico , Porfirinas/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Inibidores da Angiogênese/efeitos adversos , Anticorpos Monoclonais Humanizados/efeitos adversos , Neovascularização de Coroide/fisiopatologia , Terapia Combinada , Método Duplo-Cego , Feminino , Humanos , Incidência , Degeneração Macular/fisiopatologia , Masculino , Pessoa de Meia-Idade , Fármacos Fotossensibilizantes/efeitos adversos , Porfirinas/efeitos adversos , Estudos Prospectivos , Ranibizumab , Resultado do Tratamento , Verteporfina , Acuidade Visual/fisiologia
2.
Retina ; 32(8): 1453-64, 2012 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-22426346

RESUMO

PURPOSE: To assess the effects of verteporfin photodynamic therapy (PDT) combined with ranibizumab or alone versus ranibizumab monotherapy in patients with symptomatic macular polypoidal choroidal vasculopathy. METHODS: In this multicenter, double-masked, primarily indocyanine green angiography-guided trial, 61 Asian patients were randomized to verteporfin PDT (standard fluence), ranibizumab 0.5 mg, or the combination. Patients were administered with verteporfin PDT/placebo and initiated with three consecutive monthly ranibizumab/sham injections starting Day 1, and re-treated (Months 3-5) as per predefined criteria. The primary endpoint was the proportion of patients with indocyanine green angiography-assessed complete regression of polyps at Month 6. Secondary endpoints included mean change in best-corrected visual acuity at Month 6 and safety. RESULTS: At Month 6, verteporfin combined with ranibizumab or alone was superior to ranibizumab monotherapy in achieving complete polyp regression (77.8% and 71.4% vs. 28.6%; P < 0.01); mean change ± standard deviation in best-corrected visual acuity (letters) was 10.9 ± 10.9 (verteporfin PDT + ranibizumab), 7.5 ± 10.6 (verteporfin PDT), and 9.2 ± 12.4 (ranibizumab). There were no new safety findings with either drug used alone or in combination. CONCLUSION: Verteporfin PDT combined with ranibizumab 0.5 mg or alone was superior to ranibizumab monotherapy in achieving complete regression of polyps in this 6-month study in patients with symptomatic macular polypoidal choroidal vasculopathy. All treatments were well tolerated over 6 months.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Doenças da Coroide/tratamento farmacológico , Fotoquimioterapia , Fármacos Fotossensibilizantes/uso terapêutico , Pólipos/tratamento farmacológico , Porfirinas/uso terapêutico , Idoso , Inibidores da Angiogênese/efeitos adversos , Anticorpos Monoclonais Humanizados/efeitos adversos , Corioide/irrigação sanguínea , Doenças da Coroide/diagnóstico , Doenças da Coroide/fisiopatologia , Corantes , Terapia Combinada , Método Duplo-Cego , Feminino , Angiofluoresceinografia , Humanos , Verde de Indocianina , Injeções Intravítreas , Masculino , Pessoa de Meia-Idade , Fármacos Fotossensibilizantes/efeitos adversos , Pólipos/diagnóstico , Pólipos/fisiopatologia , Porfirinas/efeitos adversos , Ranibizumab , Resultado do Tratamento , Verteporfina , Acuidade Visual/fisiologia
3.
J Clin Oncol ; 27(16): 2630-7, 2009 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-19380449

RESUMO

PURPOSE: Cross-talk between the estrogen receptor (ER) and the phosphoinositide-3-kinase (PI3K)/Akt/mammalian target of rapamycin (mTOR) pathways is a mechanism of resistance to endocrine therapy, and blockade of both pathways enhances antitumor activity in preclinical models. This study explored whether sensitivity to letrozole was enhanced with the oral mTOR inhibitor, everolimus (RAD001). PATIENTS AND METHODS: Two hundred seventy postmenopausal women with operable ER-positive breast cancer were randomly assigned to receive 4 months of neoadjuvant treatment with letrozole (2.5 mg/day) and either everolimus (10 mg/day) or placebo. The primary end point was clinical response by palpation. Mandatory biopsies were obtained at baseline and after 2 weeks of treatment (ie, day 15). Samples were assessed for PI3K mutation status (PIK3CA) and for pharmacodynamic changes of Ki67, phospho-S6, cyclin D1, and progesterone receptor (PgR) by immunohistochemistry. RESULTS: Response rate by clinical palpation in the everolimus arm was higher than that with letrozole alone (ie, placebo; 68.1% v 59.1%), which was statistically significant at the preplanned, one-sided, alpha = 0.1 level (P = .062). Marked reductions in progesterone receptor and cyclin D1 expression occurred in both treatment arms, and dramatic downregulation of phospho-S6 occurred only in the everolimus arm. An antiproliferative response, as defined by a reduction in Ki67 expression to natural logarithm of percentage positive Ki67 of less than 1 at day 15, occurred in 52 (57%) of 91 patients in the everolimus arm and in 25 (30%) of 82 patients in the placebo arm (P < .01). The safety profile was consistent with historical results of everolimus monotherapy; grades 3 to 4 adverse events occurred in 22.6% of patients who received everolimus and in 3.8% of patients who received placebo. CONCLUSION: Everolimus significantly increased letrozole efficacy in neoadjuvant therapy of patients with ER-positive breast cancer.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Biomarcadores Tumorais/metabolismo , Neoplasias da Mama/tratamento farmacológico , Receptores de Estrogênio/metabolismo , Adulto , Idoso , Idoso de 80 Anos ou mais , Antibióticos Antineoplásicos/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Inibidores da Aromatase/administração & dosagem , Biópsia , Neoplasias da Mama/genética , Neoplasias da Mama/metabolismo , Neoplasias da Mama/patologia , Proliferação de Células/efeitos dos fármacos , Quimioterapia Adjuvante , Classe I de Fosfatidilinositol 3-Quinases , Ciclina D1/metabolismo , Método Duplo-Cego , Europa (Continente) , Everolimo , Feminino , Regulação Enzimológica da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Humanos , Antígeno Ki-67/metabolismo , Letrozol , Pessoa de Meia-Idade , Mutação , Terapia Neoadjuvante , Nitrilas/administração & dosagem , Palpação , Fosfatidilinositol 3-Quinases/genética , Fosforilação , Pós-Menopausa , Receptores de Progesterona/metabolismo , Proteínas Quinases S6 Ribossômicas/metabolismo , Sirolimo/administração & dosagem , Sirolimo/análogos & derivados , Fatores de Tempo , Resultado do Tratamento , Triazóis/administração & dosagem , Estados Unidos
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