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1.
Ann Oncol ; 35(1): 107-117, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37871702

RESUMO

BACKGROUND: Erdafitinib is an oral pan-fibroblast growth factor receptor (FGFR) tyrosine kinase inhibitor approved to treat locally advanced/metastatic urothelial carcinoma (mUC) in patients with susceptible FGFR3/2 alterations (FGFRalt) who progressed after platinum-containing chemotherapy. FGFR-altered tumours are enriched in luminal 1 subtype and may have limited clinical benefit from anti-programmed death-(ligand) 1 [PD-(L)1] treatment. This cohort in the randomized, open-label phase III THOR study assessed erdafitinib versus pembrolizumab in anti-PD-(L)1-naive patients with mUC. PATIENTS AND METHODS: Patients ≥18 years with unresectable advanced/mUC, with select FGFRalt, disease progression on one prior treatment, and who were anti-PD-(L)1-naive were randomized 1 : 1 to receive erdafitinib 8 mg once daily with pharmacodynamically guided uptitration to 9 mg or pembrolizumab 200 mg every 3 weeks. The primary endpoint was overall survival (OS). Secondary endpoints included progression-free survival (PFS), objective response rate (ORR), and safety. RESULTS: The intent-to-treat population (median follow-up 33 months) comprised 175 and 176 patients in the erdafitinib and pembrolizumab arms, respectively. There was no statistically significant difference in OS between erdafitinib and pembrolizumab [median 10.9 versus 11.1 months, respectively; hazard ratio (HR) 1.18; 95% confidence interval (CI) 0.92-1.51; P = 0.18]. Median PFS for erdafitinib and pembrolizumab was 4.4 and 2.7 months, respectively (HR 0.88; 95% CI 0.70-1.10). ORR was 40.0% and 21.6% (relative risk 1.85; 95% CI 1.32-2.59) and median duration of response was 4.3 and 14.4 months for erdafitinib and pembrolizumab, respectively. 64.7% and 50.9% of patients in the erdafitinib and pembrolizumab arms had ≥1 grade 3-4 adverse events (AEs); 5 (2.9%) and 12 (6.9%) patients, respectively, had AEs that led to death. CONCLUSIONS: Erdafitinib and pembrolizumab had similar median OS in this anti-PD-(L)1-naive, FGFR-altered mUC population. Outcomes with pembrolizumab were better than assumed and aligned with previous reports in non- FGFR-altered populations. Safety results were consistent with the known profiles for erdafitinib and pembrolizumab in this patient population.


Assuntos
Carcinoma de Células de Transição , Pirazóis , Quinoxalinas , Neoplasias da Bexiga Urinária , Humanos , Carcinoma de Células de Transição/tratamento farmacológico , Carcinoma de Células de Transição/patologia , Neoplasias da Bexiga Urinária/tratamento farmacológico , Neoplasias da Bexiga Urinária/patologia , Anticorpos Monoclonais Humanizados , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico
2.
BMC Cancer ; 16(1): 752, 2016 09 23.
Artigo em Inglês | MEDLINE | ID: mdl-27664126

RESUMO

BACKGROUND: Platinum-based systemic chemotherapy is considered the backbone for management of advanced urothelial carcinomas. However there is a lack of real world data on the use of such chemotherapy regimens, on patient profiles and on management after treatment failure. METHODS: Fifty-one randomly selected physicians from 4 European countries registered 218 consecutive patients in progression or relapse following a first platinum-based chemotherapy. Patient characteristics, tumor history and treatment regimens, as well as the considerations of physicians on the management of urothelial carcinoma were recorded. RESULTS: A systemic platinum-based regimen had been administered as the initial chemotherapy in 216 patients: 15 in the neoadjuvant setting, 61 in adjuvant therapy conditions, 137 in first-line advanced setting and 3 in other conditions. Of these patients, 76 (35 %) were initially considered as cisplatin-unfit, mainly because of renal impairment (52 patients). After platinum failure, renal impairment was observed in 44 % of patients, ECOG Performance Status ≥ 2 in 17 %, hemoglobinemia < 10 g/dL in 16 %, hepatic metastases in 13 %. 80 % of these patients received further anticancer therapy. Immediately after failure of adjuvant/neoadjuvant chemotherapy, most subsequent anticancer treatments were chemotherapy doublets (35/58), whereas after therapy failure in the advanced setting most patients receiving further anticancer drugs were treated with a single agent (80/114). After first progression to chemotherapy, treatment decisions were mainly driven by Performance Status and prior response to chemotherapy (>30 % patients). The most frequent all-settings second anticancer therapy regimen was vinflunine (70 % of single-agent and 42 % of all subsequent treatments), the main reasons evoked by physicians (>1 out of 4) being survival benefit, safety and phase III evidence. CONCLUSION: In this daily practice experience, a majority of patients with urothelial carcinoma previously treated with a platinum-based therapy received a second chemotherapy regimen, most often a single agent after an initial chemotherapy in the advanced setting and preferably a cytotoxic combination after a neoadjuvant or adjuvant chemotherapy. Performance Status and prior response to chemotherapy were the main drivers of further treatment decisions.


Assuntos
Anemia/epidemiologia , Nefropatias/epidemiologia , Neoplasias Hepáticas/epidemiologia , Platina/uso terapêutico , Neoplasias da Bexiga Urinária/tratamento farmacológico , Urotélio/patologia , Idoso , Idoso de 80 Anos ou mais , Progressão da Doença , Europa (Continente)/epidemiologia , Feminino , Humanos , Neoplasias Hepáticas/secundário , Masculino , Metástase Neoplásica , Guias de Prática Clínica como Assunto , Falha de Tratamento , Neoplasias da Bexiga Urinária/complicações , Neoplasias da Bexiga Urinária/patologia
3.
Ann Oncol ; 26(2): 288-300, 2015 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24936581

RESUMO

BACKGROUND: Screening tools are proposed to identify those older cancer patients in need of geriatric assessment (GA) and multidisciplinary approach. We aimed to update the International Society of Geriatric Oncology (SIOG) 2005 recommendations on the use of screening tools. MATERIALS AND METHODS: SIOG composed a task group to review, interpret and discuss evidence on the use of screening tools in older cancer patients. A systematic review was carried out and discussed by an expert panel, leading to a consensus statement on their use. RESULTS: Forty-four studies reporting on the use of 17 different screening tools in older cancer patients were identified. The tools most studied in older cancer patients are G8, Flemish version of the Triage Risk Screening Tool (fTRST) and Vulnerable Elders Survey-13 (VES-13). Across all studies, the highest sensitivity was observed for: G8, fTRST, Oncogeriatric screen, Study of Osteoporotic Fractures, Eastern Cooperative Oncology Group-Performance Status, Senior Adult Oncology Program (SAOP) 2 screening and Gerhematolim. In 11 direct comparisons for detecting problems on a full GA, the G8 was more or equally sensitive than other instruments in all six comparisons, whereas results were mixed for the VES-13 in seven comparisons. In addition, different tools have demonstrated associations with outcome measures, including G8 and VES-13. CONCLUSIONS: Screening tools do not replace GA but are recommended in a busy practice in order to identify those patients in need of full GA. If abnormal, screening should be followed by GA and guided multidisciplinary interventions. Several tools are available with different performance for various parameters (including sensitivity for addressing the need for further GA). Further research should focus on the ability of screening tools to build clinical pathways and to predict different outcome parameters.


Assuntos
Avaliação Geriátrica/métodos , Geriatria/métodos , Programas de Rastreamento/métodos , Oncologia/métodos , Neoplasias , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Masculino
4.
Ann Oncol ; 24(2): 336-342, 2013 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-23051952

RESUMO

BACKGROUND: Actual tolerability of sunitinib is still poorly documented in elderly patients with metastatic renal cell carcinoma (mRCC). PATIENTS AND METHODS: Charts of elderly patients treated with sunitinib for mRCC were reviewed in six Italian centers to assess safety (primary objective), efficacy and correlation of toxicity with comprehensive geriatric assessment (CGA) (secondary objectives). RESULTS: Sixty-eight patients were eligible, and the median age was 74 years. CGA was carried out in 34 patients (41% fit, 41% vulnerable and 18.5% frail). The dose reduction to 37.5 mg was made upfront or soon after the first cycle in 69.1%. More frequent toxic effects were fatigue (80.9%), mucositis (61.8%) and hypertension (58.8%). Cardiac events occurred in nine patients. In 10 patients, therapy was interrupted early due to rapidly progressive disease (10.3%) or severe toxicity (4.4%: 1 cardiac failure, 1 fatigue, 1 febrile neutropenia). At a median follow-up of 27.1 months, the median OS was 18.3 months and the median PFS was 13.6 months. Correlation was not found between frailty at CGA with severe toxicity nor with response. CONCLUSIONS: Treatment with sunitinib is effective in elderly patients; yet early interruptions were frequent. Starting treatment at reduced dose and escalating in the absence of severe toxicity could be suggested.


Assuntos
Antineoplásicos/uso terapêutico , Carcinoma de Células Renais/tratamento farmacológico , Indóis/uso terapêutico , Neoplasias Renais/tratamento farmacológico , Pirróis/uso terapêutico , Idoso , Idoso de 80 Anos ou mais , Antineoplásicos/efeitos adversos , Carcinoma de Células Renais/mortalidade , Intervalo Livre de Doença , Esquema de Medicação , Humanos , Indóis/efeitos adversos , Neoplasias Renais/mortalidade , Pirróis/efeitos adversos , Sunitinibe , Resultado do Tratamento
5.
Ann Oncol ; 24(6): 1685-91, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23446092

RESUMO

BACKGROUND: The impact of adherence to clinical practice guidelines (CPGs) for loco-regional treatment (i.e. surgery and radiotherapy) and chemotherapy on local disease control and survival in sarcoma patients was investigated in a European study conducted in an Italian region (Veneto). PATIENTS AND METHODS: The completeness of the adherence to the Italian CPGs for sarcomas treatment was assessed by comparing the patient's charts and the CPGs. Propensity score-adjusted multivariate survival analysis was used to assess the impact of CPGs adherence on patient clinical outcomes. RESULTS: A total of 151 patients were included. Adherence to CPGs for loco-regional therapy and chemotherapy was observed in 106 out of 147 (70.2%) and 129 out of 139 (85.4%) patients, respectively. Non-adherence to CPGs for loco-regional treatment was independently associated with AJCC stage III disease [odds ratio (OR) 1.77, P = 0.011] and tumor-positive excision margin (OR 3.55, P = 0.003). Patients not treated according to the CPGs were at a higher risk of local recurrence [hazard ratio (HR) 5.4, P < 0.001] and had a shorter sarcoma-specific survival (HR 4.05, P < 0.001), independently of tumor stage. CONCLUSIONS: Incomplete adherence to CPGs for loco-regional treatment of sarcomas was associated with worse prognosis in patients with non-metastatic tumors.


Assuntos
Fidelidade a Diretrizes/normas , Neoplasias de Tecido Conjuntivo/epidemiologia , Neoplasias de Tecido Conjuntivo/terapia , Guias de Prática Clínica como Assunto/normas , Sarcoma/epidemiologia , Sarcoma/terapia , Idoso , Estudos de Coortes , Europa (Continente)/epidemiologia , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias de Tecido Conjuntivo/mortalidade , Sarcoma/mortalidade , Taxa de Sobrevida/tendências , Resultado do Tratamento
6.
Ann Oncol ; 24(4): 1093-8, 2013 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-23230134

RESUMO

INTRODUCTION: We investigated the activity and safety of sorafenib, a multitargeted tyrosine-kinase inhibitor, in patients with advanced soft tissue sarcomas (STS). PATIENTS AND METHODS: An open-label nonrandomised multicentre phase II study was conducted in advanced STS patients pre-treated with anthracycline-based chemotherapy. Patients received sorafenib 400 mg twice daily for 28 days. The primary end point was the progression-free survival (PFS) rate at 6 months. Toxicity was assessed. Clinical outcomes were evaluated in all histologies and in leiomyosarcoma (L) and angiovascular sarcomas (A). RESULTS: Between November 2006 and January 2010, 101 patients (36 L, 19 A, and 46 others) were enrolled; 76 patients per-protocol (PP) and 100 per intention-to-treat (ITT) were assessable for the primary end point. In the PP analysis, 11 (14.5%) achieved partial response and 25 (32.9%) stable disease; 6-month PFS rates were all histologies, 34.5%; L, 38.4%; and A, 56.3%. In the ITT analysis, 6-month PFS results were 27.1, 35, and 35.5% in all histologies, L, and A, respectively. When stratified by histology, we observed a better PFS favouring leiomyosarcoma versus other histologies (P = 0.033). Treatment was well tolerated. CONCLUSIONS: Sorafenib appears to be a promising option in leiomyosarcoma patients. This finding warrants further evaluation in histology-driven trials.


Assuntos
Leiomiossarcoma/tratamento farmacológico , Niacinamida/análogos & derivados , Compostos de Fenilureia/administração & dosagem , Inibidores de Proteínas Quinases/administração & dosagem , Sarcoma/tratamento farmacológico , Adulto , Idoso , Idoso de 80 Anos ou mais , Antraciclinas/administração & dosagem , Antraciclinas/efeitos adversos , Intervalo Livre de Doença , Feminino , Humanos , Leiomiossarcoma/patologia , Masculino , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Niacinamida/administração & dosagem , Niacinamida/efeitos adversos , Compostos de Fenilureia/efeitos adversos , Estudos Prospectivos , Inibidores de Proteínas Quinases/efeitos adversos , Sarcoma/patologia , Sorafenibe
7.
Br J Cancer ; 107(8): 1286-94, 2012 Oct 09.
Artigo em Inglês | MEDLINE | ID: mdl-22955853

RESUMO

BACKGROUND: Recently, we developed an apoptotic assay for expanding the monitoring capabilities of the circulating tumour cells (CTC) test during therapy. An automated platform for computing CTCs was integrated with a mAb (M30) targeting a neoepitope disclosed by caspase cleavage at cytokeratin 18 in early apoptosis; we showed that live CTCs were associated with progression, consistent with enhanced cell migration and invasion. The test was first applied here to mRCC. METHODS: Live/apoptotic CTCs changes were measured in mRCC patients receiving first-line Sunitinib and compared with circulating endothelial cell (CEC) levels. RESULTS: The presence of EpCAM-positive, live CTCs predicts progression in individual mRCC patient, being associated with distant metastasis under first-line Sunitinib. Synchronous detection of CTCs and CEC levels discloses for the first time an association between their dynamic changes and outcome: a rapid increase of the CEC number as early as the first cycle of therapy is associated with CTC decrease in non-progressed patients, whereas a delayed response of CECs is related to higher CTC values in the progressed group indicating treatment failure. CONCLUSION: We demonstrated that a delayed response to antiangiogenic treatment indicated by persistent detection of CECs correlates with persistent live CTCs and more aggressive disease.


Assuntos
Inibidores da Angiogênese/uso terapêutico , Células Endoteliais/patologia , Indóis/uso terapêutico , Neoplasias Renais/tratamento farmacológico , Células Neoplásicas Circulantes/patologia , Pirróis/uso terapêutico , Adulto , Idoso , Idoso de 80 Anos ou mais , Apoptose , Biomarcadores Tumorais , Progressão da Doença , Feminino , Humanos , Queratina-18 , Neoplasias Renais/patologia , Neoplasias Renais/secundário , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Sunitinibe , Falha de Tratamento
8.
ESMO Open ; 7(6): 100634, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36493602

RESUMO

BACKGROUND: The Meet-URO score allowed a more accurate prognostication than the International Metastatic RCC Database Consortium (IMDC) for patients with pre-treated metastatic renal cell carcinoma (mRCC) by adding the pre-treatment neutrophil-to-lymphocyte ratio and presence of bone metastases. MATERIALS AND METHODS: A post hoc analysis was carried out to validate the Meet-URO score on the overall survival (OS) of patients with IMDC intermediate-poor-risk mRCC treated with first-line nivolumab plus ipilimumab within the prospective Italian Expanded Access Programme (EAP). We additionally considered progression-free survival (PFS) and disease response rates. Harrell's c-index was calculated to compare the accuracy of survival prediction. RESULTS: Overall the EAP included 306 patients, with a median follow-up of 12.2 months, median OS was not reached, 1-year OS was 66.8% and median PFS was 7.9 months. By univariable analysis, both the IMDC score and the two additional variables of the Meet-URO score were associated with either OS or PFS (P < 0.001 for all comparisons). The four Meet-URO risk groups (G) had 1-year OS of 92%, 72%, 50% and 21% for G2 (29.1% of patients), G3 (28.8%), G4 (33.0%) and G5 (9.1%), respectively. OS was significantly shorter in each consecutive G (P = 0.001 for G3, P < 0.001 for both G4 and G5 compared to G2). Similarly, Meet-URO Gs 2-5 showed decreasing median PFS and response rates. The Meet-URO score showed the highest c-index for both OS (0.73) and PFS (0.67). Limitations include the post hoc nature of this analysis and the lack of a comparative arm to assess predictive value. CONCLUSION: The Meet-URO score appeared to show better prognostic classification than the IMDC alone in patients with mRCC at IMDC intermediate-poor risk treated with first-line nivolumab and ipilimumab.


Assuntos
Carcinoma de Células Renais , Neoplasias Renais , Humanos , Carcinoma de Células Renais/tratamento farmacológico , Carcinoma de Células Renais/secundário , Nivolumabe/farmacologia , Nivolumabe/uso terapêutico , Ipilimumab/farmacologia , Ipilimumab/uso terapêutico , Neoplasias Renais/tratamento farmacológico , Neoplasias Renais/patologia , Estudos Prospectivos , Estudos Retrospectivos
10.
Clin Transl Oncol ; 22(11): 2130-2135, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32232716

RESUMO

PURPOSE: To identify patients with metastatic urothelial cancer (mUC) unlikely to benefit from immune-checkpoint inhibitors (ICIs). METHODS/PATIENTS: We explored the predictive and prognostic values of baseline neutrophil-to-lymphocyte ratio (NLR), with cut-offs ≥ 3 and ≥ 5, and of a urothelial immune prognostic index (UIPI, based on increased NLR and LDH), on 146 patients. RESULTS: NLR and UIPI significantly predicted progressive disease and progression-free survival with both cut-offs (p = 0.0069, p = 0.0034, p = 0.0160, p = 0.0063; p < 0.001, p = 0.021, p = 0.014, p = 0.026; for NLR-3, NLR-5, UIPI-3, UIPI-5, respectively) and overall survival when NLR cut-off was ≥ 5 (p = 0.03 and p = 0.024, for NLR-5 and UIPI-5, respectively). CONCLUSIONS: NLR-5 deserves prospective validation to identify mUC patients with poor prognosis following ICIs.


Assuntos
Inibidores de Checkpoint Imunológico/uso terapêutico , L-Lactato Desidrogenase/sangue , Linfócitos , Neutrófilos , Neoplasias Urológicas/tratamento farmacológico , Urotélio/patologia , Adulto , Idoso , Biomarcadores , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Neoplasias Urológicas/imunologia , Neoplasias Urológicas/mortalidade
11.
Curr Med Chem ; 15(4): 415-21, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18288996

RESUMO

Malignancy-associated hypercalcemia (MAH) is the commonest cause of hypercalcemia in hospitalized patients. Its incidence is 15 cases per 100,000 person-year. Such complication develops in almost 10% of patients with advanced cancer representing, ultimately, the most frequent cause of death in several patients with cancer. Parathyroid hormone related protein (PTHrP), which has strong homology to parathyroid hormone, is the commonest hormonal mediator of MAH. Overall, about 80% of patients with MAH have increased PTHrP serum levels. Bisphosphonates are synthetic analogues of pyrophosphate, and represent the principal support of treatment. Several bisphosphonates have shown to decrease serum calcium levels by inhibiting PTH-dependent osteoclast activation. They are potent and effective inhibitors of osteoclast-mediated bone resorption, and have shown antiangiogenic properties in some experimental models. At present, pamidronate, zoledronate and ibandronate should be considered the drugs of choice in the treatment of MAH. Old agents such as mithramycin, calcitonine, and gallium nitrate have practically been abandoned due to their limited activity and huge side effects, especially for the kidney. A new experimental approach to MAH involves the blockade of receptor activator of nuclear factor-kappa B ligand, usually abbreviated as RANKL. RANKL is a key element in the differentiation, function, and survival of osteoclasts, which plays an essential role in removing Ca(++) from the bone in response to PTH stimulation. This review provides information about the actual medical treatment of MAH.


Assuntos
Hipercalcemia/tratamento farmacológico , Hipercalcemia/etiologia , Neoplasias/complicações , Animais , Conservadores da Densidade Óssea/uso terapêutico , Difosfonatos/uso terapêutico , Humanos , Hipercalcemia/diagnóstico , Hipercalcemia/fisiopatologia , Ligante RANK/fisiologia
13.
Eur J Surg Oncol ; 43(2): 401-406, 2017 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-27890347

RESUMO

BACKGROUND: Hyperthermic isolated limb perfusion (HILP) is an effective neoadjuvant treatment to avoid amputation in patients with locally advanced extremity soft tissue sarcomas (STS). We aimed to investigate whether STS histological type plays a role in predicting clinical outcomes. METHODS: This study reports a retrospective analysis of 125 patients with limb threatening STS (liposarcoma, n = 41; malignant peripheral nerve sheath tumor, n = 20; leiomyosarcoma, n = 20; miscellany, n = 44), who underwent HILP from 1990 through 2015 at our institution. The following endpoints were evaluated: tumor response (assessed by radiological imaging and histology), limb sparing rate, local progression-free survival (LPFS) and overall survival (OS). RESULTS: On average, overall (complete + partial) tumor response was significantly greater in patients affected with liposarcoma as compared to those with other histotypes (radiological response rate: 38/41, 92.7% vs 66/84, 78.6%, P-value: 0.048; mean histological necrosis: 83.6% vs 52.9%, P < 0.0001). Limb sparing rate was also higher among patients with liposarcoma as compared to other histotypes (39/41, 95.1% vs 62/84, 73.8%, P-value: 0.005). As regards survival, LPFS was similar across tumor types, whereas OS resulted significantly worse in patients with limb leiomyosarcoma (log-rank P-value: 0.009). CONCLUSIONS: HILP is a very effective treatment modality for limb threatening STS. In our series, liposarcoma appears to be the histological type most sensitive to HILP in terms of tumor response and thus limb sparing, which might help clinicians in the patient selection process.


Assuntos
Quimioterapia do Câncer por Perfusão Regional , Extremidades , Sarcoma/tratamento farmacológico , Sarcoma/patologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Amputação Cirúrgica , Feminino , Humanos , Hipertermia Induzida , Masculino , Pessoa de Meia-Idade , Radioterapia Adjuvante , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento
14.
Cancer Res ; 57(21): 4940-7, 1997 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-9354461

RESUMO

Several costimulatory molecules play a key role in the differentiation of B lymphocytes and in T-B-cell interactions. In this study, we addressed the question of whether different receptors and counter-receptors may be expressed on malignant B lymphocytes from chronic B-cell malignancies. Using flow cytometry and reverse transcription PCR analyses, the expression of molecules belonging to the tumor necrosis factor receptor (TNFR) and tumor necrosis factor ligand (TNFL) families, as well as the expression of CD80 and CD86 molecules, was analyzed in normal B cells and in different chronic lymphoproliferative disorders of B-cell type, including B-cell chronic lymphocytic leukemia (CLL), mantle cell lymphoma, hairy cell leukemia (HCL), and HCL variant. Different patterns of expression of TNFR and TNFL superfamily molecules were demonstrated among B-cell malignancies. In particular, CD40 was commonly observed on all B cells (both tumor and normal), whereas its ligand (CD40L), which is usually undetectable on resting normal B lymphocytes, was expressed in CLL and HCL but not in other chronic lymphoproliferative disorders. CD27 was not shown in normal B cells, although it was present in all malignancies and with particularly high density in mantle cell lymphoma. CD70 was widely distributed on tumor B lymphocytes, but not on the CD5+ normal counterpart. CD30 was strongly expressed in HCL variant and weakly in B-cell CLL, whereas its ligand showed a wide pattern of expression, including all neoplastic and normal B cells. TNFR II (CD120b) and CD80 were distributed on neoplastic B cells from all groups, usually at an intermediate to high degree of intensity, whereas the CD86 molecule was present at lower intensity than CD80. Finally, reverse transcription PCR analysis confirmed the presence of CD40L, CD30, and CD30L mRNAs in those B cells expressing the corresponding membrane-bound proteins at low density. Our data indicate that TNFR and TNFL molecules are of use clinically both in differentiating B-cell malignancies from the normal counterpart (i.e., CD27, CD70, CD40L, CD30, and CD80) and in defining different chronic B-cell disorders (i.e., CD40L, CD27, and CD30). Interestingly, the observation that several receptors and their ligands (i.e., CD40/CD40L, CD30/CD30L, and CD27/CD70) can be expressed on the same cell suggests that these molecules play a role in initiating and maintaining the neoplastic process by mediating B-T and B-B interactions.


Assuntos
Antígenos CD/análise , Linfócitos B/química , Leucemia Linfocítica Crônica de Células B/imunologia , Proteínas de Neoplasias/análise , Adulto , Feminino , Citometria de Fluxo , Humanos , Leucemia de Células Pilosas/imunologia , Masculino , Pessoa de Meia-Idade , Receptores do Fator de Necrose Tumoral/análise
16.
Neurology ; 58(12): 1759-64, 2002 Jun 25.
Artigo em Inglês | MEDLINE | ID: mdl-12084873

RESUMO

BACKGROUND: Nitrosoureas constitute the main resource of chemotherapy for glioblastoma. However, because of chemoresistance, which is intrinsic or rapidly acquired after the first administration of chemotherapy, there have been few improvements in survival. Because O(6)-alkylguanine-DNA alkyltransferase (AGT) is the main target for increasing cell sensitivity to the nitrosoureas, we postulated that preexposure to other alkylating agents might increase the therapeutic index of the nitrosoureas by saturating all the copies of AGT present in the tumor cells. OBJECTIVE: To investigate the response rate, toxic effects, time from start of chemotherapy to progression of disease or exit from the study for any reason (TTP), and progression-free survival at 6 months (PFS-6) associated with a multidrug combination that could reverse resistance to carmustine (BCNU) through AGT depletion. METHODS: We conducted a phase 2 study of patients with glioblastoma at first relapse or progression after surgery and standard radiotherapy. Patients were treated with 100 mg/m(2) of procarbazine on days 1 to 5, 80 mg/m(2) of BCNU on days 3 to 5, and 1.4 mg/m(2) of vincristine on day 3 every 8 weeks. RESULTS: Fifty-eight patients were enrolled in the study, and all were assessable for response and toxic effects. Six patients (10.3%) had a complete response, 11 (19%) had a partial response, and 17 (29.3%) had stable disease. The median TTP was 4.8 months; 42.3% of patients had PFS-6, and 15.4% had PFS at 12 months. Response to chemotherapy was the only significant prognostic factor for TTP. Neutropenia was grade 3 in 8.6% of patients and grade 4 in 5.2% of patients, and thrombocytopenia was grade 3 in 17.2% of patients and grade 4 in 12% of patients; hepatic and pulmonary toxic effects were grade 3 in 5.2% and 8.6% of patients, respectively. CONCLUSION: This regimen proved active in chemotherapy-naive patients with recurrent glioblastoma even though toxic effects were substantial.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Carmustina/uso terapêutico , Resistencia a Medicamentos Antineoplásicos , Glioblastoma/tratamento farmacológico , Adolescente , Adulto , Antineoplásicos Alquilantes/administração & dosagem , Antineoplásicos Alquilantes/efeitos adversos , Antineoplásicos Fitogênicos/administração & dosagem , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Carmustina/efeitos adversos , Feminino , Glioblastoma/mortalidade , Humanos , Masculino , Pessoa de Meia-Idade , Procarbazina/administração & dosagem , Procarbazina/efeitos adversos , Modelos de Riscos Proporcionais , Taxa de Sobrevida , Vincristina/administração & dosagem , Vincristina/efeitos adversos
17.
Curr Pharm Des ; 7(16): 1553-80, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11562299

RESUMO

BACKGROUND: The incidence of brain and other central nervous system malignant neoplasias is 6.5 cases per 100,000 inhabitants-years, and appears to increase with increasing age (1.2 % per year), with the greatest rate of increase in the population over age 70 years. MATERIAL AND METHODS: Chemotherapy remains part of the treatment that includes surgery and radiation therapy for the management of malignant gliomas. This article reviews the new drugs that have been introduced in the treatment of these patients in the latest years, their specific cellular targets, the objective response, the TTP and the MST. RESULTS: The most encouraging results to date come from studies of temozolomide, which is one of the most active and best tolerated drugs in recent years, and from clinical trials of CPT11. CONCLUSIONS: New approaches to chemotherapy treatment are necessary. Enrollment of patients into rigorous, well conducted, clinical trials, both at tumor diagnosis and recurrence, will generate new information regarding investigational therapies, and may offer improved therapies for patients with malignant gliomas.


Assuntos
Antineoplásicos/uso terapêutico , Neoplasias Encefálicas/tratamento farmacológico , Inibidores da Angiogênese/uso terapêutico , Animais , Neoplasias Encefálicas/genética , Neoplasias Encefálicas/metabolismo , Neoplasias Encefálicas/patologia , Inibidores Enzimáticos/uso terapêutico , Terapia Genética , Humanos
18.
Eur J Cancer ; 38(10): 1298-312, 2002 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-12091059

RESUMO

Primary central nervous system lymphoma (PCNSL) is a rare non-Hodgkin's lymphoma arising in the brain. Recent increase in its incidence has been noted both in immunocompetent individuals and patients with immunodeficiency. This review will focus on the epidemiology, pathogenesis, diagnosis and treatment of this aggressive extranodal lymphoma in immunocompetent patients. Stereotactic biopsy is usually required for diagnosis, while molecular biology and/or cytofluorimetric analysis may confirm the presence of clonal proliferation in the cerebrospinal fluid (CSF). Methotrexate-based chemotherapy plus whole-brain radiotherapy are the standard treatment for PCNSL and achieve a high rate of complete remissions (CR), but long-term neurotoxicity may heavily compromise the patient's quality of life. The metabolic rate of controversial gadolinium-enhancing lesions on magnetic resonance (MR) scans may be assessed with positron emission tomography (PET), which discriminates radiation necrosis from true recurrence. Withholding radiotherapy in patients achieving CR after first-line chemotherapy is a new and interesting treatment option, while the role of high-dose chemotherapy with stem cell rescue is still uncertain.


Assuntos
Neoplasias do Sistema Nervoso Central , Linfoma não Hodgkin , Antimetabólitos Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Neoplasias do Sistema Nervoso Central/tratamento farmacológico , Neoplasias do Sistema Nervoso Central/patologia , Neoplasias do Sistema Nervoso Central/radioterapia , Terapia Combinada , Humanos , Linfoma não Hodgkin/tratamento farmacológico , Linfoma não Hodgkin/patologia , Linfoma não Hodgkin/radioterapia , Metotrexato/uso terapêutico , Qualidade de Vida , Fatores de Risco , Análise de Sobrevida
19.
Expert Rev Anticancer Ther ; 1(3): 357-70, 2001 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-12113103

RESUMO

Malignant gliomas are still among the most lethal and difficult tumors to treat; even the most intensive combinations of radio- and chemotherapy are not curative and yield only a modest impact on survival for most of these patients, as long-term survivors are less than 10%. There is a major need for new chemotherapeutic drugs and alternative therapeutic modalities. This review aims to define the best standard treatment in the common clinical practice and also summarizes the most promising lines of investigational research in the field of neuro-oncology, which will probably offer new and long-awaited valid therapy options for brain tumor patients.


Assuntos
Neoplasias Encefálicas/terapia , Glioma/terapia , Inibidores da Angiogênese/uso terapêutico , Antineoplásicos/uso terapêutico , Neoplasias Encefálicas/irrigação sanguínea , Neoplasias Encefálicas/epidemiologia , Terapia Combinada , Terapia Genética , Glioma/irrigação sanguínea , Glioma/epidemiologia , Humanos , Imunoterapia , Radioterapia , Procedimentos Cirúrgicos Operatórios
20.
Anticancer Res ; 21(6A): 4105-8, 2001.
Artigo em Inglês | MEDLINE | ID: mdl-11911301

RESUMO

BACKGROUND: The aim of this study was to compare the sensitivity of different pre-operative parameters in patients with breast cancer (BC) recurrence using univariate and multivariate analysis. MATERIALS AND METHODS: We retrospectively analyzed a series of 387 women (median age 60 years, range 35-83 years) who underwent curative surgery for pT1-2 BC. The patients were divided into two groups: Group 1: 325 (84.0%) patients with no evidence of disease during a median follow-up of 53 months (range 25-149 months) and Group 2: 62 (16.0%) patients who developed local or distant recurrences. RESULTS: Univariate analysis showed significant (p<0.01) differences between the two Groups in age, size and grading of the tumor and hormone receptor rate. MIB1 proliferation rate, serum markers CEA and CA 15-3, and lymph node status were not useful in predicting relapse. Multivariate analysis using a logistic regression model showed that only age, size of the tumor and hormone receptor rate independently correlate with the onset of recurrences. CONCLUSION: There is no clear correlation between BC recurrence and the majority of the prognostic factors available. Multivariate analysis of several pre-operative parameters may help to correctly select the high risk population.


Assuntos
Neoplasias da Mama/diagnóstico , Recidiva Local de Neoplasia/diagnóstico , Adulto , Idoso , Idoso de 80 Anos ou mais , Neoplasias da Mama/patologia , Neoplasias da Mama/cirurgia , Feminino , Humanos , Modelos Logísticos , Pessoa de Meia-Idade , Análise Multivariada , Recidiva Local de Neoplasia/patologia , Recidiva Local de Neoplasia/cirurgia , Valor Preditivo dos Testes , Prognóstico , Fatores de Risco
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