Bacteremic pneumonia caused by Enterococcus hirae in a subject receiving regorafenib / Neumonía bacteriémica causada por Enterococcus hirae en un paciente tratado con regorafenib

INTRODUCTION: Infections due to Enterococcus hirae have rarely been reported in humans but are not uncommon in mammals and birds. We describe a case of E. hirae bacteremia and pneumonia in a bird breeder and its potential relationship with regorafenib, a tirosin kinase inhibitor (TKI). METHODS: Descriptive study and review of the literature through a PubMed search of the cases described previously to date. RESULTS: Only seventeen cases have been described, mainly endocarditis, pyelonephritis, and intraabdominal infections. No cases of pneumonia have been reported so far. The recent increase in TKI use opens a new field to explore in infectious diseases due to both the exposure to these immunosuppressive drugs and the increased survival of subjects with severe underlying comorbidities. CONCLUSIÓN: In patients in contact with birds, immunosuppressed by their underlying morbidities and treated with regorafenib, clinicians should be aware of an increased risk of unusual potentially severe infections

INTRODUCCIÓN: La infección por Enterococcus hirae se ha reportado raramente en humanos, pero no es infrecuente en mamíferos y aves. Describimos un caso de neumonía bacteriémica por Enterococcus hirae, y su posible relación con regorafenib, un inhibidor de la tirosina quinasa (TKI, por sus siglas en inglés). MÉTODOS: Estudio descriptivo y revisión de la literatura mediante una búsqueda en PubMed de los casos descritos anteriormente hasta la fecha. RESULTADOS: Solo se han publicado 17 casos, principalmente endocarditis, pielonefritis e infecciones intraabdominales, sin ningún caso de neumonía. El reciente incremento en el uso de la TKI abre la puerta a un nuevo campo a explorar en enfermedades infecciosas debido tanto a la exposición a estos fármacos como al incremento en la supervivencia de individuos con importantes comorbilidades subyacentes. CONCLUSIÓN: En pacientes en contacto cercano con aves, inmunodeprimidos por sus comorbilidades y en tratamiento con regorafenib, podría existir un mayor riesgo de infecciones inusuales potencialmente graves

Efectividad y seguridad de regorafenib y trifluridina/tipiracilo en cáncer colorrectal metastático / Effectiveness and safety of regorafenib versus trifluridine/tipiracil in metastatic colorectal cancer

OBJETIVOS: Comparar la efectividad y seguridad de regorafenib y trifluridina/tipiracilo en pacientes con cáncer de colon metastático en la práctica clínica real. MÉTODOS: Estudio retrospectivo observacional entre febrero 2013 y mayo 2017. Se incluyeron todos los pacientes con cáncer de colon metastático que empezaron tratamiento con regorafenib o trifluridina/tipiracilo. Se recogieron variables demográficas, diagnósticas y terapéuticas; y los efectos adversos y reducciones de dosis para evaluar la seguridad. La supervivencia global (SG) y supervivencia libre de progresión (SLP) se calcularon con el método de Kaplan-Meier, evaluándose las diferencias mediante la determinación del hazard ratio (HR) con un modelo de riesgo proporcional de Cox. RESULTADOS: Se incluyeron 39 pacientes (61,54% mujeres, edad media: 62,69 ± 11,51 años, 76,92% ECOG1, mediana de líneas de tratamiento previas 3,28 ± 1,02; 58,97% RAS mutado, 61,54% presentaban metástasis en el diagnóstico): 10 iniciaron regorafenib y 29 trifluridina/tipiracilo. La mediana de SLP fue 1,77 meses con regorafenib y 2,46 con trifluridina/tipiracilo (HR 1,35 (0,64-2,85), p = 0,428), y de SG 7,00 meses con ambos (HR 1,45 (0,68-3,09), p = 0,335). Las diferencias no fueron estadísticamente significativas. La media de efectos adversos por paciente fue 3,70 ± 2,35 con regorafenib y 2,55 ± 2,16 con trifluridina/tipiracilo, siendo los más frecuentes con regorafenib astenia, diarrea, síndrome mano-pie, hiporexia y mucositis; y con trifluridina/tipiracilo astenia, neutropenia y náuseas. El 30,00% de pacientes con regorafenib y el 27,58% con trifluridina/tipiracilo necesitaron reducir la dosis por toxicidad. CONCLUSIÓN: En nuestro estudio, regorafenib y trifluridina/tipiracilo tienen una efectividad similar y modesta. Los distintos perfiles de toxicidad de los fármacos deben tenerse en cuenta en la selección del tratamiento

PURPOSE: To compare effectiveness and safety of regorafenib and trifluridine/tipiracil in patients with metastatic colorectal cancer in real clinical practice. METHODS: A retrospective observational study including all patients with metastatic colorectal cancer who started treatment with regorafenib or trifluridine/ tipiracil (February 2013-May 2017) was carried out. Demographic, diagnostic and therapeutic variables were collected. Adverse effects and dose reductions were recorded to measure safety. Median progression free survival (PFS) and overall survival (OS) were recorded. Differences in survival were evaluated using the Cox's proportional hazard models to determine the hazard ratio. RESULTS: Throughout the period of the study 39 patients were included (61.54% women, median age 62.69 ± 11.51 years, 76.92% ECOG1, median previous lines 3.28 ± 1.02, 58.97% mutant RAS, 61.54% had metastasis in the diagnosis): 10 patients started treatment with regorafenib and 29 with trifluridine/tipiracil. The median PFS with regorafenib was 1.77 months and with trifluridine/tipiracil 2.46 months (HR 1.35 (0.64-2.85), p = 0.428), and the median OS was 7.00 months with both drugs (HR 1.45 (0.68-3.09), p = 0.335). Differences in survival were not statistically significant

Severe maculopapular exanthema induced by regorafenib: successful desensitization and adaptation of a dosage regimen

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Is regorafenib providing clinically meaningful benefits to pretreated patients with metastatic colorectal cancer?

Treatment with regorafenib has demonstrated statistically significant improvements in terms of overall survival, progression-free survival and disease control when compared with placebo in pretreated patients with metastatic colorectal cancer in two placebo-controlled, randomized, phase III trials (CORRECT and CONCUR). Similar results were observed in two open-label, single-arm studies (REBECCA and CONSIGN) performed in the real-world setting. But several authors have suggested that the benefit provided by regorafenib may not be clinically meaningful for these patients. Moreover, it has been suggested that not all subgroups of patients might benefit from regorafenib. The intention of this review is to provide an overview of the existing evidence for regorafenib in terms of efficacy, tolerability and quality of life in different subpopulations according to clinical and biological characteristics. Additionally, the magnitude of the clinical benefit provided by regorafenib to these patients has been explored and whether there are poorer outcomes in certain subpopulations (AU)

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Sorafenib for non-selected patient population with advanced hepatocellular carcinoma: efficacy and safety data according to liver function

OBJECTIVE: Sorafenib is the standard treatment of patients with advanced hepatocellular carcinoma, regardless of the liver functional reserve. We present a single institutional series of Child-Pugh A and Child-Pugh B patients treated with sorafenib with the aim to establish the efficacy and safety of sorafenib in patients of daily clinical conditions and to compare these results between Child-Pugh A and Child-Pugh B patients. MATERIALS AND METHODS: A total of 51 patients were treated with sorafenib 400 mg/12 h until disease progression or unacceptable toxicity. RESULTS: The median progression-free survival and overall survival for the overall population were 3.5 and 8.2 months, respectively, with a 1-year survival rate of 27 %. Overall survival was significantly longer for patients Child-Pugh A compared with those with Child-Pugh B liver function (8.7 vs. 4.7 months, respectively). The most common adverse events were fatigue (62.7 %), diarrhea (58 %), hypertension (31.3 %), and hand-foot syndrome (31.3 %), and in most cases grade 1 or 2 according to the NCI-CTC 3.0. Grade 4 liver-related events occurred mainly in Child-Pugh B patients with decompensated cirrhosis at the time of sorafenib initiation (54.5 % of that group). DISCUSSION: The benefit of sorafenib in Child-Pugh B patients, if exist, may be limited by frequent liver-related events, especially in decompensated patients, and then, toxicity and impact in quality of life should be carefully monitored (AU)

Impact of the incorporation of tyrosine kinase inhibitor agents on the treatment of patients with a diagnosis of advanced renal cell carcinoma: study based on experience at the Hospital Universitario Central de Asturias

INTRODUCTION: For nearly the past two decades, cytokines (CKs) have been the only systemic treatment option available for advanced renal cell carcinoma (RCC). In recent years, tyrosine kinase inhibitors (TKIs) have demonstrated clinical activity on this tumour. Our purpose is to describe one centre's experience with the use of CKs and TKIs in the treatment of patients with advanced RCC. MATERIALS AND METHODS: This study was designed as a retrospective chart review of RCC patients who were treated with CKs and/or TKIs in our department between July 1996 and June 2008. Efficacy and toxicity were assessed using World Health Organization (WHO) criteria. The Kaplan-Meier method was used to estimate progression-free (PFS) and overall (OS) survival. RESULTS: Ninety-four patients were classified into three groups depending on the modality of treatment administered: 46 were treated with CKs alone and/or chemotherapy (27 with immunotherapy, one with chemotherapy and 18 with both), 28 with TKIs alone (25 with sunitinib and 13 with sorafenib) and 20 with TKIs in second-line treatment following failure with CKs (17 with sunitinib, eight with sorafenib, four with bevacizumab and one with lapatinib). The median age was 60 years in the CK group and 65 and 62, respectively, in TKI in first and second-line treatment groups. Eighty-five percent of patients treated with CKs and 75% in the TKI group in first-line treatment and 80% in second-line treatment were men. Overall, 89% of patients had favourable risk, and 11% had intermediate risk. All patients were considered evaluable for toxicity. The main grade 3-4 (%) toxicity was asthenia for both groups, (ten in TKIs and 15 in CKs). Other grade 1-2 toxicities were mucositis (39), bleeding (8), hypertension (19), skin toxicity (33) and hypothyroidism (12.5) associated with TKIs; and anaemia (33), cough (29), asthenia (39) and emesis (14) associated with CKs. The objective response rate among 80 patients evaluable for activity was 10.6% with CKs and 46.5% and 35%, respectively, with TKIs in first- and second-line treatments. Disease stabilisation with CKs was recorded at 59% of patients and with TKIs 25% and 50% in first- and second-line treatment groups, respectively. The median progression-free survival (PFS) with CKs was 122 days [95% confidence interval (CI) 82-162] and with TKIs 201 days (65-337) in the first and 346 days (256-436) in second-line treatment groups. The median overall survival (OS) was 229 days (142-316) and 2,074 days (1,152-2,996) for patients treated with CKs and TKIs. CONCLUSIONS: Our results are in line with the activity and survival rates previously reported in the literature regarding the use of TKIs for patients with advanced RCC in first- and second-line treatment, which has demonstrated an acceptable toxicity level (AU)

A phase II trial of first-line sorafenib in patients with metastatic renal cell carcinoma unwilling to receive or with early intolerance to immunotherapy: SOGUG Study 06-01

AIMS: Our aim was to evaluate first-line treatment of metastatic renal cell carcinoma (mRCC) with sorafenib in patients unwilling to receive immunotherapy or with early in

The role of antiangiogenesis therapy: bevacizumab and beyond

The importance of angiogenesis in tumour growth and development is well known. Overexpression of vascular endothelial growth factor (VEGF), the key mediator of angiogenesis, is associated with poor prognosis in cancer. As a result, several therapeutic agents that inhibit the actions of VEGF or its receptors are currently in development for use in advanced solid tumours, such breast, colorectal, lung and renal cancer. Clinical data from trials of anti-VEGF agents in this group of tumours are discussed, with a particular focus on the efficacy and safety of bevacizumab, the anti-VEGF agent at the most advanced stage of development in those tumour types. Future potential uses of bevacizumab in cancer therapy will be discussed (AU)

Generalised erythematous skin eruptions induced by sorafenib: cutaneous toxicity and treatment outcome

A woman diagnosed of a renal cell carcinoma in 1989 had a metastatic kidney cancer localised in subcutaneous nodules, gut and lung in 2007. Sorafenib treatment was initiated a 400 mg orally twice a day. The patient developed generalised erythematous skin eruptions and two weeks later a widespread erythematous maculopapular eruption located exclusively on the legs and arms, along with an objective response. The most likely cause of the generalised erythematous skin eruptions was considered to be sorafenib because of the close temporal relationship between exposure to the drug and onset of symptoms. Furthermore, a relationship between sorafenib skin toxicity and treatment efficacy was observed. This therapeutic efficacy of EGFR inhibitors and cutaneous side effects should be better assessed in large cohorts or trials to determine whether the skin toxicity of patients can be linked to an objective antitumour response (AU)

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Sorafenib TARGET trial results in Spanish patients

INTRODUCTION: Sorafenib improves progression-free survival in advanced clear-cell renal-cell carcinoma patients progressing to first-line therapy, as has been shown in the placebo-controlled international TARGET trial. The aim of this study is to report the results of the patients included in the Spanish centres in this trial. PATIENTS AND METHODS: The records of the patients in the database of the TARGET trial have been reviewed. Data about progression-free survival, overall survival and toxicity have been collected in order to do this subpopulation analysis. RESULTS: A total of 15 patients have been included (sorafenib arm 7, placebo arm 8). A trend to an improved progression-free survival in the sorafenib arm has been observed period Toxicity in the sorafenib arm has been manageable. CONCLUSION: The analysis of these 15 patients has shown efficacy and toxicity results that follow the trend observed for the overall international population (AU)

Molecular biology of renal cell carcinoma

Recent developments in molecular biology have lead to an increased understanding of the events involved in renal cell carcinoma (RCC) carcinogenesis. In this field, basic molecular pathways important to oncogenic transformation secondary to Von Hippel-Lindau (VHL) tumor suppression gene inactivation, associated to clear-cell RCC, have been elucidated. Loss of function of VHL results in the high-expression of pro-angiogenic growth factors, such as vascular endothelial growth factor (VEGF) and platelet derived growth factor (PDGF). New therapies against specific targets in RCC have demonstrated significant clinical activity in patients. These therapeutic approaches are based on the VEGF inhibition by using anti-VEGF monoclonal antibodies (bevacizumab) or multi-kinase inhibitors, that also target PDGF and c-kit tyrosine kinases (sorafenib, sunitinib); or by the inhibition of the mammalian target of rapamycin (mTOR) pathway (temsirolimus). This article reviews current knowledge of molecular pathogenesis of inherited and sporadic RCC (AU)