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Biomedical subjects

F Perrone

Publications and source records attributed to F Perrone.

At least 19 recordsLinked to original sources

Lynch syndrome-associated urothelial carcinoma: clinical and molecular findings from a single-institution cohort.

Lynch syndrome-associated urothelial carcinoma (LS-UC) is a rare and undercharacterized clinical entity. While FGFR3 alterations are well described in sporadic urothelial carcinoma, their prevalence and clinical implications in LS-UC remain unclear. We aimed to provide a comprehensive clinical and molecular characterization of LS-UC. We conducted a retrospective single-center study including patients with Lynch syndrome (LS) and histologically confirmed urothelial carcinoma (UC). Clinical, pathological, treatment, and follow-up data were collected. Targeted next-generation sequencing was performed on available tumor samples to assess genomic alterations, with particular attention to FGFR3 mutations. A total of 27 patients with LS-UC were identified, with a predominance of upper urinary tract involvement (70%). Most tumors were diagnosed at an early stage and initially managed with local treatment. During a median follow-up of 92 months, 48% of patients experienced recurrence, with a median time to recurrence of 37 months. Recurrences were predominantly local and were mainly managed with additional surgical or intravesical treatments. No deaths were attributable to UC at last follow-up. Molecular analysis was feasible in 9 cases. FGFR3 mutations were detected in 67% of evaluable samples, with the recurrent p.Arg248Cys hotspot identified in 55% of cases. Additional alterations involved TP53, SWI/SNF complex genes, and PIK3CA, which co-occurred with FGFR3 p.Arg248Cys. No gene fusions were identified. This study expands the limited molecular and clinical evidence on Lynch syndrome-associated urothelial carcinoma. Beyond confirming the recurrent role of FGFR3 (notably p.Arg248Cys), our comprehensive multigene profiling enriches the current genomic knowledge for this rare population. Multi-center collaborative efforts remain essential to aggregate larger datasets and ultimately guide personalized patient management.

Humans↗

Is epirubicin effective in first-line chemotherapy of metastatic breast cancer (MBC) after an epirubicin-containing adjuvant treatment? A single centre phase III trial.

The aim of the study was to demonstrate the superiority of docetaxel and epirubicin vs docetaxel alone as first-line therapy in metastatic breast cancer patients pretreated with adjuvant or neoadjuvant epirubicin. We compared single agent docetaxel 100 mg m-2 (D) with the combination of docetaxel 80 mg m-2 and epirubicin 75 mg m-2 (ED). The response rate (72 vs 79%), the progression-free survival (median 9 vs 11 months) and the overall survival (median 18 vs 21 months) were not significantly different between the ED (n=26) and D arms (n=25), respectively. Leucopaenia, nausea and stomatitis were significantly worse with ED. In conclusion, epirubicin should not be administered in combination with taxanes in metastatic breast cancer patients relapsed after an anthracycline-based adjuvant or neoadjuvant therapy.

Adult↗

Methodology of clinical trials with new molecular-targeted agents: where do we stand?

In recent years, we have witnessed growing interest in the methodology of clinical trials with molecular-targeted agents. In phase I studies, alternative end points to toxicity have been proposed to define the optimal biological dose: the identification of a 'target effect', the measurement of 'surrogates' for biological activity and the assessment of drug plasma levels. However, these end points are not routinely incorporated into the study design and have rarely formed the primary basis for dose selection. In phase II studies, response rate remains the preferred end point in the early evaluation of new drugs. However, this approach might lead to rejection of potentially useful drugs when significant tumor shrinkage cannot be demonstrated. Therefore, a number of alternative end points have been proposed for agents that are not expected to cause a major tumor regression: time to progression, progression-free survival, overall survival, early progression rate and growth modulation index. In phase III trials, where efficacy in terms of survival remains the most important goal of the research, the major issues are the adequate selection of patients and the optimal clinical setting of evaluation of drugs. In conclusion, many important questions regarding the methodology of clinical research with target-based agents remain open and need to be defined by research in the near future.

Antineoplastic Agents↗

Clinical efficacy and tolerability of alpha-blocker doxazosin as add-on therapy in patients with hypertension and impaired glucose metabolism.

BACKGROUND AND AIM: The aim of this trial was to evaluate the effect of doxazosin as add-on therapy in patients with hypertension not adequately controlled on current antihypertensive therapy, and impaired glucose metabolism. The effect of doxazosin administered as add-on therapy was to be considered significant both from clinical and statistical viewpoints if the proportion of patients with adequate control of blood pressure (BP<130/85 mmHg) would be at least 30% after 16 weeks of combined therapy. METHOD AND RESULTS: It was an open, multicenter phase IV study, lasting 19 weeks: 3-week qualifying/placebo run-in period+16-week dose titration/add on therapy period, involving 264 out-patients (158 m and 106 f; mean age+/-SD: 60.9+/-8.6 years; mean BMI+/-SD: basal 29.5+/-5.1, final 30.2+/-4.6) with blood pressure still >130/85 mmHg in spite of the antihypertensive treatment (ACE inhibitors 44%, AT II antagonists 21%, Ca antagonists 12%, other drugs 8%, polytherapy 15%) and affected by type 2 diabetes (n=219), impaired fasting glucose (IFG; n=16) or impaired glucose tolerance (IGT; n=29). Following a run-in, 3-week qualifying phase during which placebo was added to ongoing antihypertensive treatment, 16-week treatment with doxazosin was added at dosages from 1 up to 8 mg/day. Main outcome measures were: the percentage of patients with blood pressure <130/85 mmHg at the end of treatment; the effects of the combination therapy on glyco-lipidic metabolism: fasting plasma glucose, fasting insulin, glycated hemoglobin, insulin resistance (HOMA-R), plasma lipids; and the effect on the 10-year CHD risk (Framingham equation). RESULTS: 35% of patients were responsive (BP<130/85 mmHg) to add-on treatment with doxazosin (CI 90%: 30.3%-40.4%; P<0.05, stat. an. intention to treat). During the run-in phase with placebo, mean SBP/DBP (+/-SD) decreased from 155.6+/-13.2/91.8+/-6.8 mmHg (Week -3) to 151.9+/-12.9/90.1+/-7.2 mmHg (Week -1) and to 151.2+/-11.5/90.1+/-6.9 mmHg (Week 0). During add-on treatment with doxazosin, mean SBP/DBP (+/-SD) further decreased to 144.9+/-15.2/86.3+/-8.3 mmHg (Week 4), 139.7+/-15.3/83.4+/-7.9 mmHg (Week 8), 135.5+/-14.3/81.7+/-7.6 mmHg (Week 12) and 136.4+/-14.5/81.0+/-7.0 mmHg (Week 16). Overall, mean BP changes reached a plateau of about -15 mmHg (SBP) and -9 mmHg (DBP) after 16 weeks of treatment; at each visit the mean decreases from baseline were statistically significant. The following mean values of metabolic parameters were reduced during the study: fasting plasma glucose (-4.1mg/dl; -2.8%), fasting insulin (-2 microU/ml; -12.3%; P<0.05), glycated hemoglobin (-0.12%; -1.7%), HOMA-R (-1.03; -18.2%; P<0.05), total cholesterol (-1.85 mg/dl; -1.1%), LDL cholesterol (-1.35 mg/dl; -0.8%) and triglycerides (-5.64 mg/dl; -2.4%); mean HDL cholesterol increased (+1.79 mg/dl; +3.9%; P<0.01). At the end of study treatment, the percentage of patients with lab values returned within normal ranges, in comparison with basal values, was statistically significant (P<0.05) for the following parameters: fasting plasma glucose (6.3%), fasting insulin (7.5%), LDL cholesterol (6.0%). Ten-year CHD risk (+/-SD) decreased from 16.4+/-7.8% to 13.6+/-7.4% (final vs. basal: -2.87+/-3.9; -17%; P<0.01). Six patients (2.3%) reported 8 adverse drug reactions: dizziness (3), edema (2), headache (2), asthenia (1). In one out of these 6 patients, in whom doxazosin was associated to the ACE inhibitor quinapril, adverse reaction (peripheral edema) led to treatment withdrawal. CONCLUSION: In patients not responsive to antihypertensive treatment and concomitantly affected by impaired glucose metabolism, achievement of target BP was obtained in more than one third of cases after 16-week add-on treatment with doxazosin. Changes in glyco-lipidic parameters and reduction of 10-year CHD risk observed during the study, although of moderate extent, confirm the overall favourable effect of antihypertensive combinations including doxazosin.

Adrenergic alpha-Antagonists↗

Modulation of 5-fluorouracil as adjuvant systemic chemotherapy in colorectal cancer: the IGCS-COL multicentre, randomised, phase III study.

The aims of this multicentre, randomised phase III trial were to evaluate: (1) the role of levamisol (LEV); and (2) the role of folinic acid (FA), added to 5-fluorouracil (5FU) in the adjuvant treatment of colorectal cancer. Patients with histologically proven, radically resected stage II or III colon or rectal cancer were eligible. The study had a 2x2 factorial design with four treatment arms: (a) 5FU alone, (b) 5FU+LEV, (c) 5FU+FA, (d) 5FU+LEV+FA, and two planned comparisons, testing the role of LEV and of FA, respectively. From March 1991, to September 1998, 1327 patients were randomised. None of the two comparisons resulted in a significant disease-free (DFS) or overall (OAS) survival advantage. The hazard ratio (HR) of relapse was 0.89 (95% confidence intervals (CI): 0.73-1.09) for patients receiving FA and 0.99 (95% CI 0.80-1.21) for those receiving LEV; corresponding HRs of death were 1.02 (95% CI: 0.80-1.30) and 0.94 (95% CI 0.73-1.20). Nonhaematological toxicity (all grade vomiting, diarrhoea, mucositis, congiuntivitis, skin, fever and fatigue) was significantly worse with FA, while all other toxicities were similar. In the present trial, there was no evidence that the addition of FA or LEV significantly prolongs DFS and OAS of radically resected colorectal cancer patients.

Adult↗

Weekly paclitaxel as first-line chemotherapy in elderly advanced breast cancer patients: a phase II study of the Gruppo Italiano di Oncologia Geriatrica (GIOGer).

BACKGROUND: First-line chemotherapy regimens suitable for elderly advanced breast cancer patients are still not defined. PATIENTS AND METHODS: Women with stage III or IV breast cancer aged > or =70 years were enrolled in a phase II study aimed to evaluate both activity and toxicity of weekly paclitaxel. Among 46 planned patients, at least 18 responses and not more than seven unacceptable toxic events are required for a favourable conclusion. Paclitaxel 80 mg/m(2) was administered weekly for 3 weeks every 28 days. RESULTS: Unacceptable toxicity occurred in seven out of 46 patients evaluated for toxicity [15.2%; exact 95% confidence interval (CI) 7.6% to 28.2%] and was represented by one case of febrile neutropenia, one case of severe allergic reaction and five cases of cardiac toxicity. Among 41 patients evaluated for response, a complete response occurred in two (4.9%) patients and a partial response in 20 (48.8%), with an overall response rate of 53.7% (exact 95% CI 38.7% to 67.9%). The median progression-free survival was 9.7 months (95% CI 8.5-18.7) and median survival was 35.8 months (95% CI 19-not defined). CONCLUSIONS: Weekly paclitaxel is highly active in elderly advanced breast cancer patients. Data on cardiovascular complications, however, indicate the need for a careful monitoring of cardiac function before and during chemotherapy.

Age Factors↗

A randomised clinical trial of two docetaxel regimens (weekly vs 3 week) in the second-line treatment of non-small-cell lung cancer. The DISTAL 01 study.

Docetaxel (75 mg m(-2) 3-weekly) is standard second-line treatment in advanced non-small-cell lung cancer (NSCLC) with significant toxicity. To verify whether a weekly schedule (33.3 mg m(-2) for 6 weeks) improved quality of life (QoL), a phase III study was performed with 220 advanced NSCLC patients, < or =75 years, ECOG PS < or =2. QoL was assessed by EORTC questionnaires and the Daily Diary Card (DDC). No difference was found in global QoL scores at 3 weeks. Pain, cough and hair loss significantly favoured the weekly schedule, while diarrhoea was worse. DDC analysis showed that loss of appetite and overall condition were significantly worse in the 3-week arm in the first week, while nausea and loss of appetite were more severe in the weekly arm in the third week. Response rate and survival were similar, hazard ratio of death in the weekly arm being 1.04 (95% CI 0.77-1.39). A 3-weekly docetaxel was more toxic for leukopenia, neutropenia, febrile neutropenia and hair loss; any grade 3-4 haematologic toxicity was significantly more frequent in the standard arm (25 vs 6%). The weekly schedule could be preferred for patients candidate to receive docetaxel as second-line treatment for advanced NSCLC, because of some QoL advantages, lower toxicity and no evidence of strikingly different effect on survival.

Adult↗

Prevalence and management of pain in Italian patients with advanced non-small-cell lung cancer.

Pain is a highly distressing symptom for patients with advanced cancer. WHO analgesic ladder is widely accepted as a guideline for its treatment. Our aim was to describe pain prevalence among patients diagnosed with advanced non-small-cell lung cancer (NSCLC), impact of pain on quality of life (QoL) and adequacy of pain management. Data of 1021 Italian patients enrolled in three randomised trials of chemotherapy for NSCLC were pooled. QoL was assessed by EORTC QLQ-C30 and LC-13. Analgesic consumption during the 3 weeks following QoL assessment was recorded. Adequacy of pain management was evaluated by the Pain Management Index (PMI). Some pain was reported by 74% of patients (42% mild, 24% moderate and 7% severe); 50% stated pain was affecting daily activities (30% a little, 16% quite a bit, 3% very much). Bone metastases strongly affected presence of pain. Mean global QoL linearly decreased from 64.9 to 36.4 from patients without pain to those with severe pain (P<0.001). According to PMI, 616 out of 752 patients reporting pain (82%) received inadequate analgesic treatment. Bone metastases were associated with improved adequacy and worst pain with reduced adequacy at multivariate analysis. In conclusion, pain is common in patients with advanced NSCLC, significantly affects QoL, and is frequently undertreated. We recommend that: (i). pain self-assessment should be part of oncological clinical practice; (ii). pain control should be a primary goal in clinical practice and in clinical trials; (iii). physicians should receive more training in pain management; (iv). analgesic treatment deserves greater attention in protocols of anticancer treatment.

Adult↗

Treatment of advanced non-small-cell lung cancer patients with ECOG performance status 2: results of an European Experts Panel.

BACKGROUND: Platinum-based combination chemotherapy is currently recommended as the standard treatment for patients with advanced non-small-cell lung cancer (NSCLC), but its benefit seems limited to fit patients with a performance status (PS) of 0 or 1. For PS2 patients, there is no consensus on standard treatment. With the aims of reviewing the evidence supporting each of these therapeutic options, possibly reaching a consensus for treatment of PS2 patients affected by advanced NSCLC in clinical practice, and suggesting the priorities for clinical research in this field, an European Experts Panel took place in Avellino, Italy in April 2003. RESULTS: and conclusions On the basis of current evidence, chemotherapy treatment appears justified for patients with advanced NSCLC and PS2. Single-agent chemotherapy (gemcitabine, vinorelbine, taxanes) could be the preferred option, although carboplatin-based or low-dose cisplatin-based doublets may represent alternative options. Stronger evidence is expected from new clinical research specifically focused on PS2 patients. Single-agent chemotherapy should be the standard arm against which experimental treatments are tested in randomised trials dedicated to PS2 patients. High priority should be given to the evaluation of tolerability and efficacy of platinum-based combinations, and to the testing of new biological agents. Another research priority is the improvement of supportive care. Patients strongly need symptomatic improvement: end points such as symptom relief, clinical benefit and quality of life should have a central position in trials dedicated to PS2 NSCLC patients.

Antineoplastic Agents↗

Supportive care in patients with advanced non-small-cell lung cancer.

The present study describes supportive care (SC) in patients with advanced non-small-cell lung cancer (NSCLC), evaluating whether it is affected by concomitant chemotherapy, patient's performance status (PS) and age. Data of patients enrolled in three randomised trials of first-line chemotherapy, conducted between 1996 and 2001, were pooled. The analysis was limited to the first three cycles of treatment. Supportive care data were available for 1185 out of 1312 (90%) enrolled patients. Gastrointestinal drugs (45.7%), corticosteroids (33.4%) and analgesics (23.8%) were the most frequently observed categories. The mean number of drugs per patient was 2.43; 538 patients (45.4%) assumed three or more supportive drugs. Vinorelbine does not produce substantial variations in the SC pattern, while cisplatin-based treatment requires an overall higher number of supportive drugs, with higher use of antiemetics (41 vs 27%) and antianaemics (10 vs 4%). Patients with worse PS are more exposed to corticosteroids (42 vs 30%). Elderly patients require drugs against concomitant diseases significantly more than adults (20 vs 7%) and are less frequently exposed to antiemetics (12 vs 27%). In conclusion, polypharmacotherapy is a relevant issue in patients with advanced NSCLC. Chemotherapy does not remarkably affect the pattern of SC, except for some drugs against side effects. Elderly patients assume more drugs for concomitant diseases and receive less antiemetics than adults.

Adult↗

Experimental dosimetry of a 32P catheter-based endovascular brachytherapy source.

The experimental dosimetry in a water phantom of a 32P linear source, 20 mm in length, used for the brachytherapy of coronary vessels is reported. The source content activity, A, was determined by means of a calibrated well ion-chamber and the value was compared with the contained activity reported in the manufacturer's certification. In this field of brachytherapy dosimetry, radiochromic film supplies a high enough spatial resolution. A highly sensitive radiochromic film, that presents only one active layer, was used in this work for the source dosimetry in a water phantom. The radiochromic film was characterized by electron beams produced by a clinical linac. A Monte Carlo calculation of beta spectra in water at different distances along the source transverse bisector axis allowed to take into account the low dependence of film response from the electron beam energy. The adopted experimental set-up, with the source in its catheter positioned on the film plane inside the water phantom, supplies accurate dosimetric information. The measured dose rate to water per unit of source activity at reference distance, D(r0, theta0)/A, in units of cGy s(-1) GBq(-1), was in agreement with the value reported in the manufacturer's certification within the experimental uncertainty. The radial dose function, g(r), is in good agreement with the literature data. The anisotropy function F(r, theta) is also reported. The analysis of the dose profile obtained at 2 mm from the source longitudinal axis shows that the uniformity is within 10% along 75% of the 20 mm treatment length. The adopted experimental set-up seems to be adequate for the quality control procedure of the dose homogeneity distribution in the water medium.

Algorithms↗

Elevated risk for MPNST in NF1 microdeletion patients.

An NF1 microdeletion is the single most commonly reported mutation in individuals with neurofibromatosis type 1 (NF1). Individuals with an NF1 microdeletion have, as a group, more neurofibromas at a younger age than the group of all individuals with NF1. We report that NF1 microdeletion individuals additionally have a substantially higher lifetime risk for the development of malignant peripheral nerve sheath tumors than individuals with NF1 who do not have an NF1 microdeletion. This should be taken into account in the medical follow-up of individuals with an NF1 microdeletion.

Adolescent↗

Analysis of body water compartments after a short sauna bath using bioelectric impedance analysis.

Studies have suggested that long-term sauna bathing may lower blood pressure in persons with hypertension by causing a direct loss of extracellular water and plasma minerals. The objective of the present study was to evaluate the effect of short-term sauna bathing on body water compartments as estimated by bioelectric impedance analysis (BIA). We recruited 15 men [mean age (+/-SD) of 23.93+/-5.12 years and mean body mass index (BMI) of 23.25+/-2.84 kg/m(2)] and 10 women matched for age and BMI. Total body resistance, reactance, and impedance were measured for all participants using BIA, at baseline, after a short sauna bath, and after a rest period. Total, extracellular, and intracellular water compartments were calculated using BIA formulae. There were no significant differences for any of the body water compartments when comparing the measurements taken before and after the sauna bath and after the rest period. However, it remains to be determined whether or not BIA is sensitive to rapid changes in water volume.

Adult↗

A standard dosimetry procedure for 192Ir sources used for endovascular brachytherapy.

The experimental dosimetry of a high dose rate (HDR) 192Ir source used for the brachytherapy of peripheral vessels is reported. The direct determination of the reference air kerma rate Kr agrees, within the experimental uncertainty, with the results obtained by a well ionization chamber calibrated at the NIST and the manufacturer's certification. A highly sensitive (HS) radiochromic film (RCF), that presents only one active layer, was used for the source dosimetry in a water phantom. The adopted experimental set-up, with the source in its catheter positioned on the RCF plane, seems to have given better accuracy of the RCF optical density measurements. The agreement between the measurement of the dose rate constant DKr (10 mm, pi/2) and the literature data confirmed the coherence of the HS RCF calibration obtained by the kerma in air measurements. The RCF measurements supplied dosimetric information about the dose to water per reference air kerma rate D(r, theta)/Kr along the source transverse bisector axis, the radial dose function g(r) and the anisotropy function F(r, theta). The value D(2 mm, pi/2)/Kr = 22.4 +/- 1.2 cGy h(-1)/(microGy h(-1)) is supplied with a dose uncertainty that is essentially due to the indeterminacy of the source position in the catheter. The data of the radial and anisotropy functions have been compared with Monte Carlo determinations reported in the literature.

Anisotropy↗