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1.
N Engl J Med ; 386(5): 437-448, 2022 02 03.
Article in English | MEDLINE | ID: mdl-35045221

ABSTRACT

BACKGROUND: Standard therapy for advanced endometrial cancer after failure of platinum-based chemotherapy remains unclear. METHODS: In this phase 3 trial, we randomly assigned, in a 1:1 ratio, patients with advanced endometrial cancer who had previously received at least one platinum-based chemotherapy regimen to receive either lenvatinib (20 mg, administered orally once daily) plus pembrolizumab (200 mg, administered intravenously every 3 weeks) or chemotherapy of the treating physician's choice (doxorubicin at 60 mg per square meter of body-surface area, administered intravenously every 3 weeks, or paclitaxel at 80 mg per square meter, administered intravenously weekly [with a cycle of 3 weeks on and 1 week off]). The two primary end points were progression-free survival as assessed on blinded independent central review according to the Response Evaluation Criteria in Solid Tumors, version 1.1, and overall survival. The end points were evaluated in patients with mismatch repair-proficient (pMMR) disease and in all patients. Safety was also assessed. RESULTS: A total of 827 patients (697 with pMMR disease and 130 with mismatch repair-deficient disease) were randomly assigned to receive lenvatinib plus pembrolizumab (411 patients) or chemotherapy (416 patients). The median progression-free survival was longer with lenvatinib plus pembrolizumab than with chemotherapy (pMMR population: 6.6 vs. 3.8 months; hazard ratio for progression or death, 0.60; 95% confidence interval [CI], 0.50 to 0.72; P<0.001; overall: 7.2 vs. 3.8 months; hazard ratio, 0.56; 95% CI, 0.47 to 0.66; P<0.001). The median overall survival was longer with lenvatinib plus pembrolizumab than with chemotherapy (pMMR population: 17.4 vs. 12.0 months; hazard ratio for death, 0.68; 95% CI, 0.56 to 0.84; P<0.001; overall: 18.3 vs. 11.4 months; hazard ratio, 0.62; 95% CI, 0.51 to 0.75; P<0.001). Adverse events of grade 3 or higher occurred in 88.9% of the patients who received lenvatinib plus pembrolizumab and in 72.7% of those who received chemotherapy. CONCLUSIONS: Lenvatinib plus pembrolizumab led to significantly longer progression-free survival and overall survival than chemotherapy among patients with advanced endometrial cancer. (Funded by Eisai and Merck Sharp and Dohme [a subsidiary of Merck]; Study 309-KEYNOTE-775 ClinicalTrials.gov number, NCT03517449.).


Subject(s)
Antibodies, Monoclonal, Humanized/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Endometrial Neoplasms/drug therapy , Phenylurea Compounds/administration & dosage , Quinolines/administration & dosage , Adult , Aged , Aged, 80 and over , Antibodies, Monoclonal, Humanized/adverse effects , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Endometrial Neoplasms/mortality , Female , Humans , Middle Aged , Phenylurea Compounds/adverse effects , Quinolines/adverse effects , Survival Analysis
2.
N Engl J Med ; 384(14): 1289-1300, 2021 04 08.
Article in English | MEDLINE | ID: mdl-33616314

ABSTRACT

BACKGROUND: Lenvatinib in combination with pembrolizumab or everolimus has activity against advanced renal cell carcinoma. The efficacy of these regimens as compared with that of sunitinib is unclear. METHODS: In this phase 3 trial, we randomly assigned (in a 1:1:1 ratio) patients with advanced renal cell carcinoma and no previous systemic therapy to receive lenvatinib (20 mg orally once daily) plus pembrolizumab (200 mg intravenously once every 3 weeks), lenvatinib (18 mg orally once daily) plus everolimus (5 mg orally once daily), or sunitinib (50 mg orally once daily, alternating 4 weeks receiving treatment and 2 weeks without treatment). The primary end point was progression-free survival, as assessed by an independent review committee in accordance with Response Evaluation Criteria in Solid Tumors, version 1.1. Overall survival and safety were also evaluated. RESULTS: A total of 1069 patients were randomly assigned to receive lenvatinib plus pembrolizumab (355 patients), lenvatinib plus everolimus (357), or sunitinib (357). Progression-free survival was longer with lenvatinib plus pembrolizumab than with sunitinib (median, 23.9 vs. 9.2 months; hazard ratio for disease progression or death, 0.39; 95% confidence interval [CI], 0.32 to 0.49; P<0.001) and was longer with lenvatinib plus everolimus than with sunitinib (median, 14.7 vs. 9.2 months; hazard ratio, 0.65; 95% CI, 0.53 to 0.80; P<0.001). Overall survival was longer with lenvatinib plus pembrolizumab than with sunitinib (hazard ratio for death, 0.66; 95% CI, 0.49 to 0.88; P = 0.005) but was not longer with lenvatinib plus everolimus than with sunitinib (hazard ratio, 1.15; 95% CI, 0.88 to 1.50; P = 0.30). Grade 3 or higher adverse events emerged or worsened during treatment in 82.4% of the patients who received lenvatinib plus pembrolizumab, 83.1% of those who received lenvatinib plus everolimus, and 71.8% of those who received sunitinib. Grade 3 or higher adverse events occurring in at least 10% of the patients in any group included hypertension, diarrhea, and elevated lipase levels. CONCLUSIONS: Lenvatinib plus pembrolizumab was associated with significantly longer progression-free survival and overall survival than sunitinib. (Funded by Eisai and Merck Sharp and Dohme; CLEAR ClinicalTrials.gov number, NCT02811861.).


Subject(s)
Antibodies, Monoclonal, Humanized/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Renal Cell/drug therapy , Everolimus/administration & dosage , Kidney Neoplasms/drug therapy , Phenylurea Compounds/administration & dosage , Programmed Cell Death 1 Receptor/antagonists & inhibitors , Quinolines/administration & dosage , Adult , Aged , Aged, 80 and over , Antibodies, Monoclonal, Humanized/adverse effects , Antineoplastic Agents/adverse effects , Antineoplastic Agents/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Carcinoma, Renal Cell/mortality , Everolimus/adverse effects , Female , Humans , Kidney Neoplasms/mortality , Male , Middle Aged , Phenylurea Compounds/adverse effects , Progression-Free Survival , Protein Kinase Inhibitors/therapeutic use , Quinolines/adverse effects , Sunitinib/adverse effects , Sunitinib/therapeutic use , Survival Analysis
3.
Lancet Oncol ; 22(7): 946-958, 2021 07.
Article in English | MEDLINE | ID: mdl-34143969

ABSTRACT

BACKGROUND: Despite advances in the first-line treatment of metastatic renal cell carcinoma (RCC), there is an unmet need for options to address disease progression during or after treatment with immune checkpoint inhibitors (ICIs). Pembrolizumab and lenvatinib are active as monotherapies in RCC; thus, we aimed to evaluate the combination of lenvatinib plus pembrolizumab in these patients. METHODS: We report results of the metastatic RCC cohort from an open-label phase 1b/2 study of lenvatinib plus pembrolizumab in patients aged at least 18 years with selected solid tumours and an Eastern Cooperative Oncology Group performance status of 0-1. Oral lenvatinib at 20 mg was given once daily along with intravenous pembrolizumab at 200 mg once every 3 weeks. Patients remained on study drug treatment until disease progression, development of unacceptable toxicity, or withdrawal of consent. Efficacy was analysed in patients with clear cell metastatic RCC receiving study drug by previous therapy grouping: treatment naive, previously treated ICI naive (previously treated with at least one line of therapy but not with an anti-PD-1 or anti-PD-L1 ICI), and ICI pretreated (ie, anti-PD-1 or anti-PD-L1) patients. Safety was analysed in all enrolled and treated patients. The primary endpoint was the objective response rate at week 24 per immune-related Response Evaluation Criteria In Solid Tumors (irRECIST) by investigator assessment. This trial is registered with ClinicalTrials.gov (NCT02501096) and with the EU Clinical Trials Register (EudraCT2017-000300-26), and is closed to new participants. FINDINGS: Between July 21, 2015, and Oct 16, 2019, 145 patients were enrolled in the study. Two patients had non-clear cell RCC and were excluded from the efficacy analysis (one in the treatment-naive group and one in the ICI-pretreated group); thus, the population evaluated for efficacy comprised 143 patients (n=22 in the treatment-naive group, n=17 in the previously treated ICI-naive group, and n=104 in the ICI-pretreated group). All 145 enrolled patients were included in the safety analysis. The median follow-up was 19·8 months (IQR 14·3-28·4). The number of patients with an objective response at week 24 by irRECIST was 16 (72·7%, 95% CI 49·8-89·3) of 22 treatment-naive patients, seven (41·2%, 18·4-67·1) of 17 previously treated ICI-naive patients, and 58 (55·8%, 45·7-65·5) of 104 ICI-pretreated patients. Of 145 patients, 82 (57%) had grade 3 treatment-related adverse events and ten (7%) had grade 4 treatment-related adverse events. The most common grade 3 treatment-related adverse event was hypertension (30 [21%] of 145 patients). Treatment-related serious adverse events occurred in 36 (25%) patients, and there were three treatment-related deaths (upper gastrointestinal haemorrhage, sudden death, and pneumonia). INTERPRETATION: Lenvatinib plus pembrolizumab showed encouraging antitumour activity and a manageable safety profile and might be an option for post-ICI treatment of metastatic RCC. FUNDING: Eisai and Merck Sharp & Dohme.


Subject(s)
Antibodies, Monoclonal, Humanized/therapeutic use , Antineoplastic Agents, Immunological/therapeutic use , Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Renal Cell/drug therapy , Immune Checkpoint Inhibitors/therapeutic use , Kidney Neoplasms/drug therapy , Phenylurea Compounds/therapeutic use , Protein Kinase Inhibitors/therapeutic use , Quinolines/therapeutic use , Aged , Antibodies, Monoclonal, Humanized/adverse effects , Antineoplastic Agents, Immunological/adverse effects , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Carcinoma, Renal Cell/immunology , Carcinoma, Renal Cell/secondary , Europe , Female , Humans , Immune Checkpoint Inhibitors/adverse effects , Kidney Neoplasms/immunology , Kidney Neoplasms/pathology , Male , Middle Aged , Phenylurea Compounds/adverse effects , Protein Kinase Inhibitors/adverse effects , Quinolines/adverse effects , Time Factors , Treatment Outcome , United States
4.
Health Mark Q ; 38(2-3): 70-90, 2021.
Article in English | MEDLINE | ID: mdl-34554045

ABSTRACT

National ID cards have been debated for some time, especially with the recent Covid-19 global pandemic and increases in technological capabilities, coupled with the need for higher national security. This paper is an empirical extension of Smith's work but in light of the current economic and political turmoil. These differences were inspected from a gender perspective, but the distrust was generally universal. As the beneficial reasons why National ID cards should be implemented (e.g., enhanced security, convenience, and enhancing CRM concepts), still many professionals exhibit numerous fears and are concerned with the risks involved.


Subject(s)
COVID-19 , Pandemics , Humans , Pandemics/prevention & control , SARS-CoV-2
5.
PLoS Biol ; 10(9): e1001392, 2012.
Article in English | MEDLINE | ID: mdl-23049479

ABSTRACT

Central place foragers, such as pollinating bees, typically develop circuits (traplines) to visit multiple foraging sites in a manner that minimizes overall travel distance. Despite being taxonomically widespread, these routing behaviours remain poorly understood due to the difficulty of tracking the foraging history of animals in the wild. Here we examine how bumblebees (Bombus terrestris) develop and optimise traplines over large spatial scales by setting up an array of five artificial flowers arranged in a regular pentagon (50 m side length) and fitted with motion-sensitive video cameras to determine the sequence of visitation. Stable traplines that linked together all the flowers in an optimal sequence were typically established after a bee made 26 foraging bouts, during which time only about 20 of the 120 possible routes were tried. Radar tracking of selected flights revealed a dramatic decrease by 80% (ca. 1500 m) of the total travel distance between the first and the last foraging bout. When a flower was removed and replaced by a more distant one, bees engaged in localised search flights, a strategy that can facilitate the discovery of a new flower and its integration into a novel optimal trapline. Based on these observations, we developed and tested an iterative improvement heuristic to capture how bees could learn and refine their routes each time a shorter route is found. Our findings suggest that complex dynamic routing problems can be solved by small-brained animals using simple learning heuristics, without the need for a cognitive map.


Subject(s)
Bees/physiology , Flight, Animal/physiology , Flowers/physiology , Motion , Photography/instrumentation , Pollination/physiology , Radar , Animals , Video Recording
6.
J Clin Oncol ; 41(1): 75-85, 2023 01 01.
Article in English | MEDLINE | ID: mdl-35867951

ABSTRACT

PURPOSE: Effective treatments are needed for melanoma that progresses on inhibitors of programmed cell death protein-1 (PD-1) or its ligand (PD-L1). We conducted the phase II LEAP-004 study to evaluate the combination of the multikinase inhibitor lenvatinib and the PD-1 inhibitor pembrolizumab in this population (ClinicalTrials.gov identifier: NCT03776136). METHODS: Eligible patients with unresectable stage III-IV melanoma with confirmed progressive disease (PD) within 12 weeks of the last dose of a PD-1/L1 inhibitor given alone or with other therapies, including cytotoxic T-cell lymphocyte-associated antigen 4 (CTLA-4) inhibitors, received lenvatinib 20 mg orally once daily plus ≤ 35 doses of pembrolizumab 200 mg intravenously once every 3 weeks until PD or unacceptable toxicity. The primary end point was objective response rate (ORR) per RECIST, version 1.1, by independent central review. RESULTS: A total of 103 patients were enrolled and treated. The median study follow-up was 15.3 months. ORR in the total population was 21.4% (95% CI, 13.9 to 30.5), with three (2.9%) complete responses and 19 (18.4%) partial responses. The median duration of response was 8.3 months (range, 3.2-15.9+). ORR was 33.3% in the 30 patients with PD on prior anti-PD-1 plus anti-CTLA-4 therapy. The median progression-free survival and overall survival in the total population were 4.2 months (95% CI, 3.8 to 7.1) and 14.0 months (95% CI, 10.8 to not reached), respectively. Grade 3-5 treatment-related adverse events occurred in 47 (45.6%) patients, most commonly hypertension (21.4%); one patient died from a treatment-related event (decreased platelet count). CONCLUSION: Lenvatinib plus pembrolizumab provides clinically meaningful, durable responses in patients with advanced melanoma with confirmed PD on prior PD-1/L1 inhibitor-based therapy, including those with PD on anti-PD-1 plus anti-CTLA-4 therapy. The safety profile was as expected. These data support lenvatinib plus pembrolizumab as a potential regimen for this population of high unmet need.


Subject(s)
Immune Checkpoint Inhibitors , Melanoma , Humans , Immune Checkpoint Inhibitors/therapeutic use , B7-H1 Antigen , Melanoma/drug therapy , Apoptosis Regulatory Proteins/therapeutic use , Melanoma, Cutaneous Malignant
7.
Expert Rev Anticancer Ther ; 22(4): 383-400, 2022 04.
Article in English | MEDLINE | ID: mdl-35260027

ABSTRACT

INTRODUCTION: Lenvatinib is an oral multitargeted tyrosine kinase inhibitor that has shown efficacy and manageable safety across multiple cancer types. The recommended starting doses for lenvatinib differ across cancer types and indications based on whether it is used as monotherapy or as combination therapy. AREAS COVERED: This review covers clinical trials that established the dosing paradigm and efficacy of lenvatinib and defined its adverse-event profile as a monotherapy; or in combination with the mTOR inhibitor, everolimus; or the anti-PD-1 antibody, pembrolizumab; and/or chemotherapy. EXPERT OPINION: Lenvatinib has been established as standard-of-care either as a monotherapy or in combination with other anticancer agents for the treatment of radioiodine-refractory differentiated thyroid carcinoma, hepatocellular carcinoma, renal cell carcinoma, and endometrial carcinoma, and is being investigated further across several other tumor types. The dosing and adverse-event management strategies for lenvatinib have been developed through extensive clinical trial experience. Collectively, the data provide the rationale to start lenvatinib at the recommended doses and then interrupt or dose reduce as necessary to achieve required dose intensity for maximized patient benefit. The adverse-event profile of lenvatinib is consistent with that of other tyrosine kinase inhibitors, and clinicians are encouraged to review and adopt relevant symptom-management strategies.


Subject(s)
Antineoplastic Agents , Carcinoma, Renal Cell , Kidney Neoplasms , Liver Neoplasms , Quinolines , Thyroid Neoplasms , Antineoplastic Agents/adverse effects , Carcinoma, Renal Cell/pathology , Humans , Iodine Radioisotopes , Kidney Neoplasms/drug therapy , Liver Neoplasms/drug therapy , Phenylurea Compounds/adverse effects , Protein Kinase Inhibitors/adverse effects , Quinolines/adverse effects , Thyroid Neoplasms/drug therapy , Thyroid Neoplasms/pathology
8.
Eur Urol ; 82(3): 283-292, 2022 09.
Article in English | MEDLINE | ID: mdl-35210132

ABSTRACT

BACKGROUND: Lenvatinib (18 mg) plus everolimus (5 mg) is approved for patients with advanced renal cell carcinoma (RCC) after one or more prior antiangiogenic therapies. OBJECTIVE: To assess whether a lower starting dose of lenvatinib has comparable efficacy with improved tolerability for patients with advanced RCC treated with lenvatinib plus everolimus. DESIGN, SETTING, AND PARTICIPANTS: A randomized, open-label, phase 2 global trial was conducted in patients with advanced clear cell RCC and disease progression after one prior vascular endothelial growth factor-targeted therapy (prior anti-programmed death-1/programmed death ligand-1 therapy permitted). INTERVENTION: Patients were randomly assigned 1:1 to the 14- or 18-mg lenvatinib starting dose, both in combination with everolimus 5 mg/d. Patients in the 14-mg arm were to be uptitrated to lenvatinib 18 mg at cycle 2, day 1, barring intolerable grade 2 or any grade ≥3 treatment-emergent adverse events (TEAEs) requiring dose reduction occurring in the first 28-d cycle. OUTCOME MEASUREMENTS AND STATISTICAL ANALYSIS: The primary efficacy endpoint was investigator-assessed objective response rate (ORR) as of week 24 (ORRwk24); the noninferiority threshold of the 14- versus 18-mg arm was p ≤ 0.045. The primary safety endpoint was the proportion of patients with intolerable grade 2 or any grade ≥3 TEAEs within 24 wk of randomization. RESULTS AND LIMITATIONS: The ORRwk24 for the 14-mg arm (32% [95% confidence interval {CI} 25-39]) was not noninferior to the ORRwk24 in the 18-mg arm (35% [95% CI 27-42]; odds ratio: 0.88; 90% CI 0.59-1.32; p = 0.3). The proportion of intolerable grade 2 or any grade ≥3 TEAEs was similar between the two arms (14 mg, 83% vs 18 mg, 80%; p = 0.5). The secondary endpoints of overall ORR, progression-free survival, and overall survival numerically favored the 18-mg arm. A limitation of this study was that the study design did not allow for a full comparison of progression-free survival between treatment arms. CONCLUSIONS: The study findings support the approved dosing regimen of lenvatinib 18 mg plus everolimus 5 mg daily for patients with advanced RCC. PATIENT SUMMARY: In this report, we examined two doses of lenvatinib (the approved 18-mg dose and a lower dose of 14 mg) in people with advanced renal cell carcinoma to determine whether the lower dose (which was increased to the approved 18-mg dose after the first treatment cycle) could improve safety without affecting efficacy. The results showed that the efficacy of the lower lenvatinib dose (14 mg) was not the same as that of the approved (18 mg) dose, although safety results were similar, so the approved lenvatinib 18-mg dose should still be used.


Subject(s)
Carcinoma, Renal Cell , Kidney Neoplasms , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Carcinoma, Renal Cell/pathology , Everolimus/adverse effects , Humans , Kidney Neoplasms/pathology , Phenylurea Compounds , Quinolines , Vascular Endothelial Growth Factor A
9.
Curr Biol ; 18(7): 514-8, 2008 Apr 08.
Article in English | MEDLINE | ID: mdl-18394893

ABSTRACT

Numerous insect species undertake regular seasonal migrations in order to exploit temporary breeding habitats [1]. These migrations are often achieved by high-altitude windborne movement at night [2-6], facilitating rapid long-distance transport, but seemingly at the cost of frequent displacement in highly disadvantageous directions (the so-called "pied piper" phenomenon [7]). This has lead to uncertainty about the mechanisms migrant insects use to control their migratory directions [8, 9]. Here we show that, far from being at the mercy of the wind, nocturnal moths have unexpectedly complex behavioral mechanisms that guide their migratory flight paths in seasonally-favorable directions. Using entomological radar, we demonstrate that free-flying individuals of the migratory noctuid moth Autographa gamma actively select fast, high-altitude airstreams moving in a direction that is highly beneficial for their autumn migration. They also exhibit common orientation close to the downwind direction, thus maximizing the rectilinear distance traveled. Most unexpectedly, we find that when winds are not closely aligned with the moth's preferred heading (toward the SSW), they compensate for cross-wind drift, thus increasing the probability of reaching their overwintering range. We conclude that nocturnally migrating moths use a compass and an inherited preferred direction to optimize their migratory track.


Subject(s)
Animal Migration/physiology , Flight, Animal/physiology , Moths/physiology , Wind , Animals
10.
Proc Biol Sci ; 278(1721): 3074-80, 2011 Oct 22.
Article in English | MEDLINE | ID: mdl-21389024

ABSTRACT

Vast numbers of insects and passerines achieve long-distance migrations between summer and winter locations by undertaking high-altitude nocturnal flights. Insects such as noctuid moths fly relatively slowly in relation to the surrounding air, with airspeeds approximately one-third of that of passerines. Thus, it has been widely assumed that windborne insect migrants will have comparatively little control over their migration speed and direction compared with migrant birds. We used radar to carry out the first comparative analyses of the flight behaviour and migratory strategies of insects and birds under nearly equivalent natural conditions. Contrary to expectations, noctuid moths attained almost identical ground speeds and travel directions compared with passerines, despite their very different flight powers and sensory capacities. Moths achieved fast travel speeds in seasonally appropriate migration directions by exploiting favourably directed winds and selecting flight altitudes that coincided with the fastest air streams. By contrast, passerines were less selective of wind conditions, relying on self-powered flight in their seasonally preferred direction, often with little or no tailwind assistance. Our results demonstrate that noctuid moths and passerines show contrasting risk-prone and risk-averse migratory strategies in relation to wind. Comparative studies of the flight behaviours of distantly related taxa are critically important for understanding the evolution of animal migration strategies.


Subject(s)
Animal Migration , Flight, Animal , Moths/physiology , Songbirds/physiology , Air Movements , Altitude , Animals , England , Orientation , Radar , Seasons
11.
Proc Natl Acad Sci U S A ; 105(49): 19090-5, 2008 Dec 09.
Article in English | MEDLINE | ID: mdl-19060191

ABSTRACT

We used harmonic radar to track freely flying Glanville fritillary butterfly (Melitaea cinxia) females within an area of 30 ha. Butterflies originated from large and continuous populations in China and Estonia, and from newly established or old (> 5 years) small local populations in a highly fragmented landscape in Finland. Caterpillars were raised under common garden conditions and unmated females were tested soon after eclosion. The reconstructed flight paths for 66 individuals comprised a total distance of 51 km with high spatial resolution. Butterflies originating from large continuous populations and from old local populations in Finland exhibited similar movement behaviors, whereas butterflies originating from newly established local populations in the fragmented landscape in Finland moved significantly more than the others. There was no difference in the lengths of individual flight bouts, but the new-population females flew more frequently, resulting in longer daily movement tracks. The flight activity of all individuals was affected by environmental conditions, peaking at 19-23 degrees C (depending on population type), in the early afternoon, and during calm weather. Butterflies from all population types showed a strong tendency to follow habitat edges between the open study area and the neighboring woodlands.


Subject(s)
Animal Migration , Butterflies/physiology , Ecology/instrumentation , Ecology/methods , Radar , Age Factors , Animals , Biological Evolution , China , Ecosystem , Estonia , Finland , Flight, Animal , Movement , Population Dynamics
12.
Eur Urol ; 79(2): 177-179, 2021 02.
Article in English | MEDLINE | ID: mdl-33461737

ABSTRACT

Cabazitaxel is used to treat patients with metastatic castration-resistant prostate cancer progressing after docetaxel. It is prepackaged in 60 mg single-dose vials, a quantity much higher than the average prescribed dose, which leads to, substantial drug wastage (DW) and associated costs. To minimize DW we implemented a cost-saving, cohorting strategy where multiple patients scheduled to receive cabazitaxel (at a dose of 20mg/m2 every 3 wks) were cohorted and treated on a single weekday whenever possible. Excess drug from each vial was then saved and used for subsequent patients treated on the same day. The drug cost with cohorting was calculated from the actual number of vials used, and the drug cost without cohorting was estimated by assumingthat one vial was used per treatment. The cost of DW was determined based on the amount of drug that was discarded. All cost calculations also accounted for the discount incentives offered by Sanofi-Aventis. Over a 3-yr period, 74 patients received 402 treatments of cabazitaxel. Multiple patients were treated on 67.4% of the treatment days, and grouping of three patients on one day saved one vial. The estimated total drug cost saved was $394 536 CAD (21.1%). Pending further studies on safety and efficacy, this strategy could potentially be adopted to mitigate DW for cabazitaxel and similarly for other oncology drugs. This would significantly decrease the overall financial burden on patients, institutions, and stakeholders. PATIENT SUMMARY: Cabazitaxel chemotherapy is associated with substantial drug wastage and associated costs. By cohorting patients scheduled to receive cabazitaxel on a single weekday, the total drug cost was decreased by $394 536 CAD (21.1%) over a 3-yr period. Similar strategies could be considered to overcome the prohibitory costs associated with drug wastage for cabazitaxel and other cancer drugs.


Subject(s)
Cost Savings , Drug Costs , Prostatic Neoplasms, Castration-Resistant/drug therapy , Taxoids/economics , Taxoids/therapeutic use , Humans , Male , Neoplasm Metastasis , Prostatic Neoplasms, Castration-Resistant/pathology
13.
Proc Biol Sci ; 277(1682): 765-72, 2010 Mar 07.
Article in English | MEDLINE | ID: mdl-19889697

ABSTRACT

Studies made with both entomological and meteorological radars over the last 40 years have frequently reported the occurrence of insect layers, and that the individuals forming these layers often show a considerable degree of uniformity in their headings--behaviour known as 'common orientation'. The environmental cues used by nocturnal migrants to select and maintain common headings, while flying in low illumination levels at great heights above the ground, and the adaptive benefits of this behaviour have long remained a mystery. Here we show how a wind-mediated mechanism accounts for the common orientation patterns of 'medium-sized' nocturnal insects. Our theory posits a mechanism by which migrants are able to align themselves with the direction of the flow using a turbulence cue, thus adding their air speed to the wind speed and significantly increasing their migration distance. Our mechanism also predicts that insects flying in the Northern Hemisphere will typically be offset to the right of the mean wind line when the atmosphere is stably stratified, with the Ekman spiral in full effect. We report on the first evidence for such offsets, and show that they have significant implications for the accurate prediction of the flight trajectories of migrating nocturnal insects.


Subject(s)
Altitude , Animal Migration , Darkness , Flight, Animal/physiology , Insecta/physiology , Wind , Animals , Moths/physiology , Orientation
14.
Ecology ; 90(8): 2223-32, 2009 Aug.
Article in English | MEDLINE | ID: mdl-19739384

ABSTRACT

Dispersal is a key life-history trait, especially in species inhabiting fragmented landscapes. The process of dispersal is affected by a suite of morphological, physiological, and behavioral traits, all of which have a more or less complex genetic basis and are affected by the prevailing environmental conditions. To be able to identify genetic and phenotypic effects on dispersal, movements have to be recorded over relevant spatial and temporal scales. We used harmonic radar to track free-flying Glanville fritillary butterflies (Melitaea cinxia) released in the field and reconstructed their flight tracks for several hours. Flight track lengths for individual butterflies ranged from tens of meters to several kilometers. Butterflies were most mobile at midday and in intermediate temperatures. Flight metabolic rate (MR), measured prior to the tracking, explained variation in mobility at all scales studied. One-third of the variation in the distance moved in one hour could be attributed to variation in flight MR. Heterozygous individuals at a single nucleotide polymorphism in the phosphoglucose isomerase (Pgi) gene moved longer distances in the morning and at lower ambient temperatures than homozygous individuals. A similar genotype x temperature interaction was found to affect the metabolic rate. Our results establish connections from molecular variation in a single gene to flight physiology and movement behavior at the landscape level. These results indicate a fitness advantage to the heterozygous genotype in low temperatures and suggest a mechanism by which varying environmental conditions maintain genetic polymorphism in populations.


Subject(s)
Butterflies/genetics , Butterflies/metabolism , Cytochrome P-450 Enzyme System/metabolism , Genotype , Intramolecular Oxidoreductases/metabolism , Animals , Energy Metabolism , Female , Gene Expression Regulation, Enzymologic , Temperature
15.
Health Mark Q ; 25(4): 361-82, 2008.
Article in English | MEDLINE | ID: mdl-19064477

ABSTRACT

Application of the strategic leverage of Resource Based View of the Firm (RBV) directly advocates that a company's competitive advantage is derived from its ability to assemble and exploit an appropriate combination of resources (both tangible and intangible assets). The three companies that were selected were Pittsburgh-based companies that were within relatively easy access, representing healthcare service-related industries, and can be reviewed for the principles of the RBV. The particular firms represented a variety of establishments and included Baptist Homes (a long-term care facility), University of Pittsburgh Medical Center (UPMC)(a provider of hospital and other health services), and GlaxoSmithKline, Consumer Healthcare, North America (GSK-CHNA)(a global provider of healthcare products and services). Through the case studies, it was found that not all intangible assets are strategic, and by extension, not all measures of reputation are strategic either. For an intangible asset to be considered strategic, in this case reputation, it must be valuable, rare, imperfectly imitable, and non-substitutable.


Subject(s)
Commerce/standards , Health Services/standards , Marketing of Health Services/standards , Academic Medical Centers/standards , Commerce/economics , Financial Management/standards , Health Care Sector/economics , Health Care Sector/standards , Health Services/economics , Michigan , Nursing Homes/standards , Organizational Culture , United States
16.
Health Mark Q ; 25(3): 217-40, 2008.
Article in English | MEDLINE | ID: mdl-19042545

ABSTRACT

The limitations, immeasurable, and seemly unquantifiable aspects of the healthcare service industry, make it imperative that quality assurance programs include total quality management (TQM) and automatic identification and data capture (AIDC)-related technologies. Most of standards used in TQM and AIDC require data, to measure improvement and achieve standardization. Major difference between managing a service firm and managing a product-manufacturing firm is the difficulty of achieving consistently high quality. Examination of two different healthcare service providers in the Pittsburgh, Pennsylvania area offers different views as to the implementation and practice of total quality management techniques and AIDC integration. Since the healthcare service industry must take into account its high customization needs, there are positive steps to make the hospital structure itself more patient friendly and quality related; hence improving its heath-marketing strategies to the general public.


Subject(s)
Data Collection/methods , Health Services/standards , Total Quality Management , Accreditation , Electronic Data Processing , Health Services Administration/standards , Hospitals, Veterans/organization & administration , Medical Errors/prevention & control , Monitoring, Physiologic , United States
17.
Ecology ; 88(8): 1955-61, 2007 Aug.
Article in English | MEDLINE | ID: mdl-17824426

ABSTRACT

Honey bees (Apis mellifera) are regularly faced with the task of navigating back to their hives from remote food sources. They have evolved several methods to do this, including compass-directed "vector" flights and the use of landmarks. If these hive-centered mechanisms are disrupted, bees revert to searching for the hive, but the nature and efficiency of their searching strategy have hitherto been unknown. We used harmonic radar to record the flight paths of honey bees that were searching for their hives. Our subsequent analysis of these paths revealed that they can be represented by a series of straight line segments that have a scale-free, Lévy distribution with an inverse-square-law tail. We show that these results, combined with the "no preferred direction" characteristic of the segments, demonstrate that the bees were flying an optimal search pattern. Lévy movements have already been identified in a number of other animals. Our results are the best reported example where the movements are mostly attributable to the adoption of an optimal, scale-free searching strategy.


Subject(s)
Bees/physiology , Behavior, Animal , Homing Behavior/physiology , Spatial Behavior , Animals , Maps as Topic , Memory
19.
Article in English | MEDLINE | ID: mdl-16875097

ABSTRACT

PURPOSE: With the number of prescriptions rising nationally each year, it is surprising that Web-based technology is not fully embraced in the pharmacy industry as an aid to quality-assuring prescribing processes. Traditional prescription handling is done in a manual fashion with physicians hand-writing prescriptions for the patients during an office visit, giving the patient the responsibility of taking the prescription to a pharmacy or mailing the prescription to a mail order company for fulfillment. Electronic prescribing (e-prescribing) has the ability not only to streamline the prescription writing process, but also to reduce the number of errors that may be incurred with hand-written prescriptions. The purpose of this paper is to investigate these phenomena in the U.S.A. DESIGN/METHODOLOGY/APPROACH: A number of hypotheses were tested using principal-components analysis (PCA) and factor analyses. As a result, a total of 55 fully employed, professional and semi-professional service management and internet users, representing a college-educated and knowledge-based sample derived from the metropolitan section of Pittsburgh, was selected. FINDINGS: The six major constructs generated from the factor loadings in descending order of importance were: profit and risk factors, shipping and handling, saving, customer relationship management (CRM) and ethics, age, and awareness. The dependent variable chosen to be regressed against these major independent factor-based constructs was willingness to purchase prescriptions online. The overall relationship was found to be statistically significant (F = 2.971, p = 0.015) in predicting willingness to use e-prescribing options based on the various independent constructs. However, when testing the various standardized beta coefficients in the linear model, only the factor score-based construct CRM and ethics was found to significantly contribute to predicting the willingness to purchase prescriptions online (t = -3.074, p = 0.003). RESEARCH LIMITATIONS/IMPLICATIONS: Although this study appears to represent the e-prescribing process in the U.S.A., the sample size and region studied are only one slice of the general population. Practical implications - Unfortunately, the adoption of e-prescribing has been difficult to attain owing to numerous barriers throughout the industry. Such acceptance barriers include lack of technology trust, associated system costs, and risk of un-securing patient health and medical information. ORIGINALITY/VALUE: This article documents that increasing numbers of pharmacies today are building their IT-infrastructures to accept electronic prescriptions and it may soon be the preferred method for physicians to write prescriptions. It is with great anticipation that this technology will also enhance the prescription-writing abilities of prescribing physicians globally, giving them electronic access to patient medical records and resources that will assist them in prescribing the correct drug for the patient.


Subject(s)
Diffusion of Innovation , Drug Prescriptions , Internet , Adolescent , Adult , Data Collection , Female , Humans , Male , Middle Aged , Pennsylvania , Pharmaceutical Services , United States
20.
Anticancer Res ; 36(9): 4489-92, 2016 09.
Article in English | MEDLINE | ID: mdl-27630286

ABSTRACT

BACKGROUND/AIM: Carbonic anhydrase IX (CA9) catalyses the interconversion of carbon dioxide to carbonic acid and bicarbonate and is considered a putative biomarker of tumour hypoxia. We set out to evaluate the prognostic significance of CA9 in prostate cancer. PATIENTS AND METHODS: Plasma samples were assessed from 68 men with high-risk localised prostate cancer treated with radical prostatectomy (RP) or radiotherapy (RT), and 20 men with castration-resistant prostate cancer (CRPC) treated with docetaxel chemotherapy between 2010 and 2012 at the Princess Margaret Cancer Centre, Canada. RESULTS: Of the 68 patients with high-risk localised prostate cancer, 57 underwent RP and 11 underwent RT. Baseline CA9 was not associated with recurrence or prostate-specific antigen in either group (p=0.98 and 0.20, respectively). CA9 levels before chemotherapy correlated with overall survival (r=-0.37; two-sided p=0.11). CONCLUSION: Baseline CA9 in men with CRPC may portend a more aggressive prostate cancer phenotype with poorer survival.


Subject(s)
Antigens, Neoplasm/blood , Carbonic Anhydrase IX/blood , Neoplasm Recurrence, Local/blood , Neoplasm Recurrence, Local/diagnosis , Prostatic Neoplasms, Castration-Resistant/blood , Prostatic Neoplasms, Castration-Resistant/diagnosis , Prostatic Neoplasms/blood , Prostatic Neoplasms/diagnosis , Aged , Antineoplastic Agents/therapeutic use , Biomarkers, Tumor , Docetaxel , Gene Expression Regulation, Neoplastic , Humans , Male , Middle Aged , Neoplasm Metastasis , Phenotype , Prognosis , Prostate-Specific Antigen/blood , Prostatectomy , Prostatic Neoplasms/mortality , Prostatic Neoplasms, Castration-Resistant/mortality , Taxoids/therapeutic use , Treatment Outcome
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