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2.
J Neurooncol ; 143(3): 573-581, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-31119479

RESUMO

PURPOSE: To evaluate the pharmacokinetics and efficacy of imatinib in patients with recurrent oligodendroglial tumors. METHODS: Patients with progressive WHO grade II-III recurrent tumors after prior RT and chemotherapy were eligible. A phase I dose-escalation study was conducted for patients on enzyme-inducing anticonvulsants (EIAC). A phase II study for non-EIAC patients utilized a fixed dose of 600 mg/D. Primary efficacy endpoint was 6-month progression-free survival (PFS6). A 2-stage design was utilized, with 90% power to detect PFS6 increase from 25 to 45%. RESULTS: In the Phase I, maximum tolerated dose was not reached at 1200 mg/D. For phase II patients, overall PFS6 was 33% and median PFS 4.0 months (95% CI 2.1, 5.7). Median overall survival (OS) was longer in imatinib-treated patients compared with controls (16.6 vs. 8.0 months; HR = 0.64, 95% CI 0.41,1.0, p = 0.049), and longer in patients with 1p/19q-codeleted tumors (19.2 vs. 6.2 months, HR = 0.43, 95% CI 0.21,0.89, p = 0.019). Confirmed response rate was 3.9% (PR = 1; REGR = 1), with stable disease observed in 52.9%. At 600 mg/D, mean steady-state imatinib plasma concentration was 2513 ng/ml (95% CI 1831,3195). Grade 3-4 adverse events (hematologic, fatigue, GI, hypophosphatemia, or hemorrhage) occurred in 61%. CONCLUSIONS: Although adequate plasma levels were achieved, the observed PFS6 of 33% did not reach our pre-defined threshold for success. Although OS was longer in imatinib-treated patients than controls, this finding would require forward validation in a larger cohort. Imatinib might show greater activity in a population enriched for PDGF-dependent pathway activation in tumor tissue.


Assuntos
Antineoplásicos/uso terapêutico , Astrocitoma/tratamento farmacológico , Mesilato de Imatinib/uso terapêutico , Recidiva Local de Neoplasia/tratamento farmacológico , Oligodendroglioma/tratamento farmacológico , Antineoplásicos/farmacocinética , Astrocitoma/patologia , Estudos de Casos e Controles , Estudos de Coortes , Feminino , Seguimentos , Humanos , Mesilato de Imatinib/farmacocinética , Masculino , Dose Máxima Tolerável , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Oligodendroglioma/patologia , Prognóstico , Taxa de Sobrevida , Distribuição Tecidual
3.
Cancer ; 124(7): 1455-1463, 2018 04 01.
Artigo em Inglês | MEDLINE | ID: mdl-29313954

RESUMO

BACKGROUND: Mitogen-activated protein kinase (MAPK) activation and mammalian target of rapamycin (mTOR)-dependent signaling are hallmarks of glioblastoma. In the current study, the authors conducted a phase 1/2 study of sorafenib (an inhibitor of Raf kinase and vascular endothelial growth factor receptor 2 [VEGFR-2]) and the mTOR inhibitor temsirolimus in patients with recurrent glioblastoma. METHODS: Patients with recurrent glioblastoma who developed disease progression after surgery or radiotherapy plus temozolomide and with ≤2 prior chemotherapy regimens were eligible. The phase 1 endpoint was the maximum tolerated dose (MTD), using a cohorts-of-3 design. The 2-stage phase 2 study included separate arms for VEGF inhibitor (VEGFi)-naive patients and patients who progressed after prior VEGFi. RESULTS: The MTD was sorafenib at a dose of 200 mg twice daily and temsirolimus at a dose of 20 mg weekly. In the first 41 evaluable patients who were treated at the phase 2 dose, there were 7 who were free of disease progression at 6 months (progression-free survival at 6 months [PFS6]) in the VEGFi-naive group (17.1%); this finding met the prestudy threshold of success. In the prior VEGFi group, only 4 of the first 41 evaluable patients treated at the phase 2 dose achieved PFS6 (9.8%), and this did not meet the prestudy threshold for success. The median PFS for the 2 groups was 2.6 months and 1.9 months, respectively. The median overall survival for the 2 groups was 6.3 months and 3.9 months, respectively. At least 1 adverse event of grade ≥3 was observed in 75.5% of the VEGFi-naive patients and in 73.9% of the prior VEGFi patients. CONCLUSIONS: The limited activity of sorafenib and temsirolimus at the dose and schedule used in the current study was observed with considerable toxicity of grade ≥3. Significant dose reductions that were required in this treatment combination compared with tolerated single-agent doses may have contributed to the lack of efficacy. Cancer 2018;124:1455-63. © 2018 American Cancer Society.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias Encefálicas/tratamento farmacológico , Glioblastoma/tratamento farmacológico , Recidiva Local de Neoplasia/tratamento farmacológico , Adulto , Neoplasias Encefálicas/patologia , Feminino , Seguimentos , Glioblastoma/patologia , Humanos , Masculino , Dose Máxima Tolerável , Pessoa de Meia-Idade , Recidiva Local de Neoplasia/patologia , Prognóstico , Sirolimo/administração & dosagem , Sirolimo/análogos & derivados , Sorafenibe/administração & dosagem , Taxa de Sobrevida
4.
Psychosomatics ; 53(4): 327-33, 2012.
Artigo em Inglês | MEDLINE | ID: mdl-22652302

RESUMO

OBJECTIVE: To review the literature for cases of deliberate self-harm that directly reference Bible verses as a motivation for action and discuss predictive factors of such behaviors and post-injury management strategies. METHODS: Sixteen cases of self-mutilation prompted by Biblical verses were found in the existing literature. The authors also describe a novel case of penile amputation prompted by a verse from the Gospel of Matthew. RESULTS: Four biblical verses associated with self-mutilation were found, all from the Gospel of Matthew. All patients presented with a diagnosis of psychosis at the time of the event. Other common themes include substance abuse, guilt over sexual acts, absence of pain or regret, and destruction of the severed body part. CONCLUSIONS: Patients with symptoms of psychosis may misinterpret various verses from the Gospel of Matthew as instructions to engage in self-injurious behavior. Psychiatrists should be aware of these four verses to understand their significance and potentially forestall these behaviors.


Assuntos
Bíblia , Delusões/psicologia , Transtornos Mentais/psicologia , Pênis/lesões , Religião e Psicologia , Automutilação/psicologia , Enucleação Ocular/psicologia , Culpa , Humanos , Masculino , Pessoa de Meia-Idade , Orquiectomia , Pênis/cirurgia , Automutilação/cirurgia , Comportamento Sexual/psicologia
5.
Invest New Drugs ; 30(2): 714-22, 2012 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20938715

RESUMO

BACKGROUND: A majority of multiple myeloma (MM) patients fail to achieve complete response (CR) to peripheral blood stem cell transplantation (PBSCT); effective options following autologous transplantation are needed. Bortezomib (B) is active against MM. This study was conducted to determine the feasibility, safety, tolerability, and efficacy of B following high-dose melphalan therapy and PBSCT. Methods Fifty patients enrolled (48 evaluable) and 49 were treated (safety population). TREATMENT: 4 cycles B 1.3 mg/m(2) Days 1, 4, 8, and 11/21-days; 4 additional cycles were permitted for stable or responding patients. Results Median age was 55 years (range, 38-73), 68% male, 64% ECOG PS = 0, 44% Durie-Salmon Stage IIIA prior to induction, 42% had symptomatic IgG MM; 74% had prior single transplant (26% tandem). Responses post-transplant: 70% PRs, 18% MRs. A median of 4 cycles (range, 2-8) of B were administered. Responses: CR 8%, uCR 2%, PR 23%, uPR 19%, MR 10%, and no change 35%; median time-to-treatment failure (TTF) was 6.2 months (range, 1.0-19.4). Three deaths occurred (n = 1 sepsis, n = 2 disease progression). Grade 3-4 treatment-related toxicities included: thrombocytopenia, neuropathy (14%, each); asthenia, neutropenia (10%, each); and nausea (4%). Twelve patients (24%) discontinued treatment due to toxicity and 30 patients (60%) completed the study; 20 patients started new treatment (median 5.8 months [range, 1.5-20.3]). CONCLUSIONS: The study closed early due to widespread availability of B, and the lack of B-naïve patients. Bortezomib monotherapy after melphalan and autologous PBSCT was feasible, safe and well-tolerated (toxicities were manageable), but failed to produce the hypothesized response rates.


Assuntos
Antineoplásicos/uso terapêutico , Ácidos Borônicos/uso terapêutico , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/cirurgia , Transplante de Células-Tronco de Sangue Periférico , Pirazinas/uso terapêutico , Idoso , Antineoplásicos/efeitos adversos , Ácidos Borônicos/efeitos adversos , Bortezomib , Quimioterapia Adjuvante , Distribuição de Qui-Quadrado , Progressão da Doença , Intervalo Livre de Doença , Estudos de Viabilidade , Feminino , Humanos , Estimativa de Kaplan-Meier , Masculino , Melfalan/uso terapêutico , Pessoa de Meia-Idade , Mieloma Múltiplo/mortalidade , Agonistas Mieloablativos/uso terapêutico , Pirazinas/efeitos adversos , Fatores de Tempo , Transplante Autólogo , Falha de Tratamento , Estados Unidos
6.
Neuro Oncol ; 14(2): 215-21, 2012 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-22090453

RESUMO

Vorinostat, a histone deacetylase (HDAC) inhibitor, has shown evidence of single-agent activity in glioblastoma (GBM), and in preclinical studies, we have demonstrated significant synergistic cytotoxicity between HDAC inhibitors and proteasome inhibitors in GBM cell lines. We therefore conducted a phase II trial to evaluate the efficacy of vorinostat in combination with the proteasome inhibitor bortezomib in patients with recurrent GBM. Vorinostat was administered at a dose of 400 mg daily for 14 days of a 21-day cycle, and bortezomib was administered at a dose of 1.3 mg/m(2) intravenously on days 1, 4, 8, and 11 of the cycle. A total of 37 patients were treated, and treatment was well tolerated: grade 3, 4 nonhematologic toxicity occurred in 30% of patients and consisted mainly of fatigue (14%) and neuropathy (5%); grade 3, 4 hematologic toxicity occurred in 37% of patients and consisted of thrombocytopenia (30%), lymphopenia (4%), and neutropenia (4%). The trial was closed at the predetermined interim analysis, with 0 of 34 patients being progression-free at 6 months. One patient achieved a partial response according to the Macdonald criteria. The median time to progression for all patients was 1.5 months (range, 0.5-5.6 months), and median overall survival (OS) was 3.2 months. Patients who had received prior bevacizumab therapy had a shorter time to progression and OS, compared with those who had not. On the basis of the results of this phase II study, further evaluation of the vorinostat-bortezomib combination in GBM patients in this dose and schedule is not recommended.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Ácidos Borônicos/uso terapêutico , Neoplasias Encefálicas/tratamento farmacológico , Glioblastoma/tratamento farmacológico , Ácidos Hidroxâmicos/uso terapêutico , Pirazinas/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Ácidos Borônicos/administração & dosagem , Bortezomib , Progressão da Doença , Feminino , Glioblastoma/mortalidade , Humanos , Ácidos Hidroxâmicos/administração & dosagem , Masculino , Pessoa de Meia-Idade , Pirazinas/administração & dosagem , Análise de Sobrevida , Vorinostat
7.
Leuk Lymphoma ; 48(12): 2397-402, 2007 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-17943599

RESUMO

Denileukin diftitox (DD) is approved for treatment of CD-25 expressing cutaneous T-cell lymphomas (CTCL). Initial studies of DD demonstrated responses in patients with B-cell non-Hodgkin lymphoma (NHL). This phase II trial evaluated response rate (RR) and tolerability of DD in this population. Patients were stratified into two arms: those with NHL expressing > or =20% IL-2R (IL-2R+) or <20% IL-2R (IL-2R-). DD was dosed at 18 microg/kg/day for 5 days every 21 days. Corticosteroid pre-medication was not allowed. Thirty-five patients of a planned 77 accrued due to closure for slow accrual. This report is on 29 patients (18 males) with indolent B-cell NHL (11 IL-2R+ and 18 IL-2R-). Histologic subtypes included small lymphocytic (SLL) (8 patients) and follicular grade I/II lymphoma (21 patients). Patients received a median of three prior regimens, including rituximab in 76%. Three partial responses were observed (RR 10%). The RR for the IL-2R- and IL-2R+ patients was 11% and 9%, respectively. Of 8 patients with SLL, 2 responded. Toxicities were generally grade I - II and transient but 1 patient experienced a fatal thrombo-embolism. Therapy with DD is tolerable and modest efficacy was observed in SLL subtype. Measured IL-2R status did not correlate with efficacy.


Assuntos
Antineoplásicos/uso terapêutico , Toxina Diftérica/uso terapêutico , Interleucina-2/uso terapêutico , Linfoma não Hodgkin/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Toxina Diftérica/efeitos adversos , Feminino , Humanos , Interleucina-2/efeitos adversos , Masculino , Pessoa de Meia-Idade , Receptores de Interleucina-2/análise , Proteínas Recombinantes de Fusão/efeitos adversos , Proteínas Recombinantes de Fusão/uso terapêutico
8.
Cancer ; 97(11): 2743-7, 2003 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-12767086

RESUMO

BACKGROUND: Gemcitabine and docetaxel are active agents in advanced urothelial carcinoma. A Phase II trial of this combination was performed to determine the activity and toxicity of these agents in a multiinstitutional setting in patients previously treated with one prior chemotherapy regimen. METHODS: Twenty-nine eligible patients with advanced urothelial carcinoma were treated with docetaxel at a dose of 40 mg/m(2) over 1 hour followed by gemcitabine, 800 mg/m(2), over 30 minutes, both intravenously (i.v.) on Days 1 and 8. Cycles were repeated every 21 days until disease progression or a maximum of 6 cycles. RESULTS: Five patients obtained an objective response for an overall response rate of 17% (90% confidence interval, 7-33%). One patient achieved a complete clinical response. The median overall survival of the group was 7.7 months. Toxicity was moderate with granulocytopenia, anorexia, and fatigue being the most commonly noted side effects. CONCLUSIONS: Gemcitabine and docetaxel is an active second-line combination in patients with advanced urothelial carcinoma. Responses in visceral, lymph node, and soft tissues sites were observed. Granulocytopenia without fever, fatigue, and anorexia was common. Thromboembolic symptoms were reported and are of concern. The combination of gemcitabine and docetaxel has the potential to palliate a subset of previously treated patients with an adequate performance status.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carcinoma de Células de Transição/tratamento farmacológico , Desoxicitidina/análogos & derivados , Paclitaxel/análogos & derivados , Taxoides , Neoplasias Urológicas/tratamento farmacológico , Idoso , Antimetabólitos Antineoplásicos/administração & dosagem , Antimetabólitos Antineoplásicos/efeitos adversos , Antineoplásicos Fitogênicos/administração & dosagem , Antineoplásicos Fitogênicos/efeitos adversos , Desoxicitidina/administração & dosagem , Desoxicitidina/efeitos adversos , Docetaxel , Esquema de Medicação , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Paclitaxel/administração & dosagem , Paclitaxel/efeitos adversos , Urotélio , Gencitabina
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