Economic burden and health-related quality of life in tenosynovial giant-cell tumour patients in Europe: an observational disease registry

Background Tenosynovial Giant-Cell Tumour (TGCT) is a benign clonal neoplastic proliferation arising from the synovium, causing a variety of symptoms and often requiring repetitive surgery. This study aims to define the economic burden-from a societal perspective-associated with TGCT patients and their health-related quality of life (HRQOL) in six European countries. Methods This article analyses data from a multinational, multicentre, prospective observational registry, the TGCT Observational Platform Project (TOPP), involving hospitals and tertiary sarcoma centres from six European countries (Austria, France, Germany, Italy, the Netherlands, and Spain). It includes information on TGCT patients' health-related quality of life and healthcare and non-healthcare resources used at baseline (the 12-month period prior to the patients entering the registry) and after 12 months of follow-up. Results 146 TGCT patients enrolled for the study, of which 137 fulfilled the inclusion criteria. Their mean age was 44.5 years, and 62% were female. The annual average total costs associated with TGCT were euro4866 at baseline and euro5160 at the 12-month follow-up visit. The annual average healthcare costs associated with TGCT were euro4620 at baseline, of which 67% and 18% corresponded to surgery and medical visits, respectively. At the 12-month follow-up, the mean healthcare costs amounted to euro5094, with surgery representing 70% of total costs. Loss of productivity represented, on average, 5% of the total cost at baseline and 1.3% at follow-up. The most-affected HRQOL dimensions, measured with the EQ-5D-5L instrument, were pain or discomfort, mobility, and the performance of usual activities, both at baseline and at the follow-up visit. Regarding HRQOL, patients declared a mean index score of 0.75 at baseline and 0.76 at the 12-month follow-up. Conclusion The results suggest that TGCT places a heavy burden on its sufferers, which increases after one year of follow-up, mainly due to the healthcare resources required-in particular, surgical procedures. As a result, this condition has a high economic impact on healthcare budgets, while the HRQOL of TGCT patients substantially deteriorates over time.Orthopaedics, Trauma Surgery and Rehabilitatio

The diffuse-type tenosynovial giant cell tumor (dt-TGCT) patient journey: a prospective multicenter study

Background: Tenosynovial giant cell tumor (TGCT) is a rare, locally aggressive neoplasm arising from the synovium of joints, bursae, and tendon sheaths affecting small and large joints. It represents a wide spectrum ranging from minimally symptomatic to massively debilitating. Most findings to date are mainly from small, retrospective case series, and thus the morbidity and actual impact of this rare disease remain to be elucidated. This study prospectively explores the management of TGCT in tertiary sarcoma centers.Methods: The TGCT Observational Platform Project registry was a multinational, multicenter, prospective observational study involving 12 tertiary sarcoma centers in 7 European countries, and 2 US sites. This study enrolled for 2 years all consecutive >= 18 years old patients, with histologically diagnosed primary or recurrent cases of diffuse-type TGCT. Patient demographic and clinical characteristics were collected at baseline and every 6 months for 24 months. Quality of life questionnaires (PROMIS-PF and EQ-5D) were also administered at the same time-points. Here we report baseline patient characteristics.Results: 166 patients were enrolled between November 2016 and March 2019. Baseline characteristics were: mean age 44 years (mean age at disease onset: 39 years), 139/166 (83.7%) had prior treatment, 71/166 patients (42.8%) had >= 1 recurrence after treatment of their primary tumor, 76/136 (55.9%) visited a medical specialist >= 5 times, 66/116 (56.9%) missed work in the 24 months prior to baseline, and 17/166 (11.6%) changed employment status or retired prematurely due to disease burden. Prior treatment consisted of surgery (i.e., arthroscopic, open synovectomy) (128/166; 77.1%) and systemic treatments (52/166; 31.3%) with imatinib (19/52; 36.5%) or pexidartinib (27/52; 51.9%). Treatment strategies at baseline visits consisted mainly of watchful waiting (81/166; 48.8%), surgery (41/166; 24.7%), or targeted systemic therapy (37/166; 22.3%). Patients indicated for treatment reported more impairment compared to patients indicated for watchful waiting: worst stiffness NRS 5.16/3.44, worst pain NRS 6.13/5.03, PROMIS-PF 39.48/43.85, and EQ-5D VAS 66.54/71.85.Conclusion: This study confirms that diffuse-type TGCT can highly impact quality of life. A prospective observational registry in rare disease is feasible and can be a tool to collect curated-population reflective data in orphan diseases.Experimentele farmacotherapi

Technology, design and reliability issues in GaAs power devices

The paper gives an overview of.the most important issues concerning technology, design, characterization, modelling and reliability of GaAs power devices with the purpose of highlighting the most critical factors which determine their performances

An experimentally based systematic approach for yield and reliability evaluation in GaAs MMICs

After a critical examination of the state, of the art yield and reliability-evaluation tools, the results are reported of a systematic experimental analysis for the MMIC yield evaluation. The possibility is then proved of determining efficient MMIC reliability evaluation rules. Finally, the main features and the results until now obtained will be reported for an ex­perimental reliability program aimed at giving the Telettra designers the relevant data base

A new method for MMIC parametric yield realistic evaluations

The paper first reports some new results recently obtained at Alcatel-Telettra on the functional yield calculation for large MMICs.The parametric yield evaluation tools usually available for foundry customers are then critically discussed.Subsequently, a very wide and self consistent data base on the MMIC MESFET statistical behaviour is described. Finally, a semiempirical MESFET model is analyzed,which allows accurate forecasts of the MMIC parametric yield by using such data base

High performance GaAs monolithic transimpedance amplifiers for multigigabit per second fiber optic links

A new design approach for MMIC transimpedance amplifiers is described, which allows substantial improvements as noise, gain and stability over the previously reported circuit solutions. An accordingly designed MMIC transimpedance ampli­fier we constructed and tested is described

Design and optimization for industrial production of a 4-8 GHz monolithic amplifier for high-capacity radio links

A MMIC development philosophy for industrial production purpose is first described. The design is then reported for a laboratory prototype of a two stage 4-8 GHz MMIC amplifier to be used in high capacity radio links. Then, the paper describes the overall job (involving a number of design and testing cycles, back end simulations and measured data critical analyses) which was done to make the circuit up to a standard industrial production