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High-accuracy metrology is vitally important in manufacturing ultra-high-quality free-form mirrors designed to manipulate X-ray light with nanometer-scale wavelengths. However, surface topography measurements are instrument dependent, and without the knowledge of how the instrument performs under the practical usage conditions, the measured data contain some degree of uncertainty. Binary Pseudo Random Array (BPRA) “white noise” artifact are effective and useful for characterizing the Instrument Transfer Function (ITF) of surface topography metrology tools and wavefront measurement instrument. BPRA artifact contains features with all spatial frequencies in the instrument bandpass with equal weight. As a result, power spectral density of the patterns has a deterministic white-noise-like character that allows direct determination of the ITF with uniform sensitivity over the entire spatial frequency range. The application examples include electron microscopes, x-ray microscopes, interferometric microscopes, and large field-of-view Fizeau Interferometers. Furthermore, we will introduce the application of BPRA method to characterizing the ITF of Cylindrical Wavefront Interferometry (CWI), by developing the BPRA artifact which matches the radius of curvature of the cylindrical wavefront. The data acquisition and analysis procedures for different applications of the ITF calibration technique developed are also discussed.

Felice Alfonso Nava,1 Alessandra Mangia,2 Marco Riglietta,3 Lorenzo Somaini,4 Francesco Giuseppe Foschi,5 Ernesto Claar,6 Ivana Maida,7 Claudio Ucciferri,8 Francesca Frigerio,9 Candido Hernandez,10 Melania Dovizio,11 Valentina Perrone,11 Luca Degli Esposti,11 Massimo Puoti12 1U.O. Sanità Penitenziaria e Area Dipendenze, Azienda ULSS 6 Euganea, Padova, Italy; 2UOS Epatologia, Istituto di Ricovero e Cura “Casa Sollievo della Sofferenza”, S. Giovanni Rotondo, Italy; 3UOC Dipendenze, ASST Papa Giovanni XXIII, Bergamo, Italy; 4Servizio per le Dipendenze, SERT di Cossato, Biella, Italy; 5UOC Medicina Interna, Ospedale di Faenza, Faenza, Italy; 6UOC Medicina Interna, Ospedale Evangelico “Villa Betania”, Napoli, Italy; 7UOC Malattie Infettive e Parassitarie, Azienda Ospedaliero Universitaria di Sassari, Sassari, Italy; 8Clinica di Malattie Infettive Ospedale “SS Annunziata”, Chieti, Italy; 9Gilead Sciences, Milano, Italy; 10Gilead Sciences, Global Medical Affairs, Stockley Park, London, UB11 1BD, UK; 11CliCon S.R.L. Società Benefit, Health Economics and Outcomes Research, Bologna, Italy; 12SC Malattie Infettive, ASST Grande Ospedale Metropolitano Niguarda, Milano, ItalyCorrespondence: Luca Degli Esposti, CliCon S.r.l. Società Benefit, Health, Economics & Outcomes Research, Via Murri, 9, Bologna, 40137, Italy, Tel +39 544 38393, Fax +39 544 212699, Email luca.degliesposti@clicon.itPurpose: Hepatitis C virus (HCV) spreads from contact with blood of an infected person. HCV infections are common among people who use drugs (PWUDs), when sharing needles, syringes, or other equipment for injected drugs. The advent of pangenotypic direct-antiviral agents (DAA) in 2017 transformed the treatment landscape for HCV, but PWUDs remain a complex and hard-to-treat population with high risk of HCV reinfection. The aim of this real-world analysis was to characterize the demographic and clinical features of PWUDs in Italy, also focusing on comorbidity profile, treatment with DAAs, resource consumptions for the National Health System (NHS).Patients and Methods: During 01/2011– 06/2020, administrative databases of Italian healthcare entities, covering 3,900,000 individuals, were browsed to identify PWUDs with or without HCV infection. Among HCV+ patients, a further stratification was made into treated and untreated with DAAs. The date of PWUD or HCV first diagnosis or DAA first prescription was considered as index-date. Patients were then followed-up for one year. Alcohol-dependency was also investigated.Results: Total 3690 PWUDs were included, of whom 1141 (30.9%) PWUD-HCV+ and 2549 (69.1%) PWUD-HCV-. HCV-positive were significantly older (43.6 vs 38.5 years, p < 0.001), had a worse comorbidity profile (Charlson-index: 0.8 vs 0.4, p < 0.001), and high rates of psychiatric, respiratory, dermatological, musculoskeletal diseases and genitourinary (sexually transmitted) infections. Moreover, they received more drug prescriptions (other than DAAs, like anti-acids, antiepileptics, psycholeptics) and had undergone more frequent hospitalization, predominantly for hepatobiliary, respiratory system and mental disorders. DDA-untreated had significantly higher Charlson-index than DAA-treated (0.9 vs 0.6, p = 0.003). Alcoholism was found in 436 (11.8%) cases.Conclusion: This Italian real-world analysis suggests that PWUDs with HCV infection, especially those untreated with DAAs, show an elevated drug consumption due to their complex clinical profile. These findings could help to ameliorate the healthcare interventions on PWUDs with HCV infection.Keywords: drug abuse, hepatitis C virus, alcohol dependency, real-world evidence

Cesar Giron‐Hernandez,1 Joong Hee Han,2 Roberta Alberio,3 Arun Singh,2 Maria Paz García-Portilla,4 Maurizio Pompili,5 R Karl Knight,2 Ute Richarz,6 Srihari Gopal,2,7 José Antunes8 1EMEA Medical Affairs, Janssen-Cilag, Issy-les-Moulineaux, France; 2Janssen Research & Development, LLC, Titusville, NJ, USA; 3Medical Affairs, Janssen-Cilag, Milan, Italy; 4Department of Psychiatry, Universidad de Oviedo, Instituto Sanitario Del Principado de Asturias (ISPA) and CIBERSAM, Oviedo, Spain; 5Department of Neurosciences, Mental Health, and Sensory Organs, Sant’Andrea Hospital, Sapienza University of Rome, Rome, Italy; 6Janssen Global Services LLC, Cilag Int., Zug, Switzerland; 7Regeneron Pharmaceuticals, Tarrytown, NY, USA; 8EMEA Medical Affairs, Janssen-Cilag, Porto Salvo, PortugalCorrespondence: José Antunes, EMEA Medical Affairs, Janssen-Cilag, Porto Salvo, Portugal, Email jantune1@its.jnj.comPurpose: To examine efficacy and safety of paliperidone palmitate (PP) 6-month (PP6M) vs PP3-month (PP3M) long acting injectable (LAI) in patients with schizophrenia from European sites previously stabilized on PP3M or PP1-month (PP1M).Methods: This post-hoc subgroup analysis used data from a global phase-3 double-blind (DB) randomized non-inferiority study (NCT03345342). Patients were randomized (2:1, respectively) to receive dorsogluteal injections of PP6M (700 mg eq. or 1000 mg eq.) or PP3M (350 mg eq. or 525 mg eq.) in the 12-month DB phase. Primary endpoint was time-to-relapse during the DB phase, using a Kaplan–Meier cumulative survival estimate (non-inferiority margin 95% CI lower bound larger than prespecified as − 10%). Treatment emergent adverse events (TEAEs), physical examinations, and laboratory tests were also evaluated.Results: A total of 384 patients who entered the DB phase were included in European sites (PP6M, n = 260; PP3M, n = 124) with a mean age similar in both groups (mean age [SD] years: PP6M, 40.0 [11.39]; PP3M, 38.8 [10.41]). Baseline characteristics were similar across both groups. The number of patients who experienced a relapse during DB phase were PP6M: 18 (6.9%) vs PP3M: 3 (2.4%) with percentage relapse-free difference of − 4.9% (95% CI: − 9.2%, − 0.5%), thus achieving non-inferiority criteria. Secondary efficacy endpoints indicated comparable improvements. Incidence of TEAEs was similar between PP6M (58.8%) and PP3M (54.8%) groups. Nasopharyngitis, headache, increased weight, and injection-site pain were the most common TEAEs.Conclusion: The efficacy of PP6M was non-inferior to that of PP3M in preventing relapse in the European subgroup previously treated with PP1M or PP3M, which was consistent with the global study. No new safety signals were identified.Keywords: Europe, long-acting injectable, paliperidone palmitate 6-month, relapse-free, schizophrenia

Stefano Fagiuoli,1 Pierluigi Toniutto,2 Nicola Coppola,3 Domenica Daniela Ancona,4 Margherita Andretta,5 Fausto Bartolini,6 Fulvio Ferrante,7 Alessandro Lupi,8 Stefano Palcic,9 Francesca Vittoria Rizzi,10 Davide Re,11 Gema Alvarez Nieto,12 Candido Hernandez,13 Francesca Frigerio,14 Valentina Perrone,14 Luca Degli Esposti,14 Alessandra Mangia15 1Department of Medicine and Surgery, University of Milan Bicocca & Gastroenterology Hepatology and Transplantation Unit, ASST Papa Giovanni XXIII, Bergamo, Italy; 2Hepatology and Liver Transplantation Unit, Azienda Ospedaliero Universitaria, Udine, Italy; 3Infectious Diseases Unit, University of Campania L. Vanvitelli, Naples, Italy; 4Dipartimento Farmaceutico ASL BAT, Trani, Italy; 5UOC Assistenza Farmaceutica Territoriale, Azienda Ulss 8 Berica, Vicenza, Italy; 6Dipartimento Farmaceutico-Usl Umbria 2, Terni, Italy; 7Dipartimento Diagnostica Ed Assistenza Farmaceutica – ASL Frosinone, Frosinone, Italy; 8Struttura Complessa Di Cardiologia – ASL VCO, Omegna, Italy; 9Farmaceutica Territoriale- Azienda Sanitaria Universitaria Integrata Giuliano-Isontina (ASUGI), Trieste, Italy; 10UOS Farmacovigilanza e Monitoraggio Spesa Farmaceutica- ASL BAT, Trani, Italy; 11Servizio Farmaceutico Territoriale ASL Teramo, Teramo, Italy; 12Gilead Sciences, Medical Affairs Italy, Milan, Italy; 13Gilead Sciences, Global Medical Affairs, London, UK; 14Clicon S.r.l., Health Economics and Outcomes Research, Bologna, Italy; 15Gastroenterology and Transplant Hepatology, Papa Giovanni XXIII Hospital, Bergamo, 24127, ItalyCorrespondence: Luca Degli Esposti, CliCon S.r.l. Società Benefit, Health, Economics & Outcomes Research, Via Murri, 9, Bologna, 40137, Italy, Tel +390544 38393, Email luca.degliesposti@clicon.itPurpose: The study aims at investigating the impact of polymedication and aging in the prevalence of multiple drug-drug interactions (DDIs) on HCV patients treated with sofosbuvir/velpatasvir (SOF/VEL) or glecaprevir/pibrentasvir (GLE/PIB).Patients and Methods: This is a retrospective analysis based on administrative data covering around 6.9 million individuals. Patients treated with SOF/VEL or GLE/PIB over November 2017–March 2020 were included. Index date corresponded to SOF/VEL or GLE/PIB first prescription during such period; patients were followed up for treatment duration. Analyses were then focused on patients with ≥ 2 comedications at risk of multiple DDIs. The severity and the effect of multiple DDI were identified using the Liverpool University tool.Results: A total of 2057 patients with SOF/VEL and 2128 with GLE/PIB were selected. Mean age of SOF/VEL patients was 58.5 years, higher than GLE/PIB ones (52.5 years) (p < 0.001), and patients > 50 years were more present in SOF/VEL vs GLE/PIB cohorts: 72% vs 58%, (p < 0.001). Most prescribed co-medications were cardiovascular, alimentary and nervous system drugs. Proportion of patients with ≥ 2 comedications was higher in SOF/VEL compared to GLE/PIB cohort (56.5% vs 32.3%, p < 0.001). Those at high-risk of multiple DDIs accounted for 11.6% (N = 135) of SOF/VEL and 19.6% (N = 135) of GLE/PIB (p < 0.001) patients with ≥ 2 comedications. Among them, the potential effect of DDI was a decrease of DAA serum levels (11% of SOF/VEL and GLE/PIB patients) and an increased concentration of comedication serum levels (14% of SOF/VEL and 42% of GLE/PIB patients).Conclusion: This real-world analysis provided a thorough characterization on the burden of polymedication regimens in HCV patients treated with SOF/VEL or GLE/PIB that expose such patients to an increased risk of DDIs. In our sample population, SOF/VEL regimen was more frequently detected on elderly patients and on those with ≥ 2 comedications at risk of multi-DDI, ie, among patients characterized by higher rates of comorbidities and polypharmacy.Keywords: administrative database, glecaprevir/pibrentasvir, hepatitis C, sofosbuvir/velpatasvir, polymedication

The development of polymeric optical materials with a higher refractive index, transparency in the visible spectrum region and easier processability is increasingly desirable for advanced optical applications such as microlenses, image sensors, and organic light-emitting diodes. Most acrylates have a low refractive index (around 1.50) which does not meet the high performance requirements of advanced optical materials. In this research, three novel acrylates were synthesized via a facile one-step approach and used to fabricate optical transparent polymers. All of the polymers reveal good optical properties including high transparency (≥90%) in the visible spectrum region and high refractive index values (1.6363) at 550 nm. Moreover, nanostructures of these acrylate polymers with various feature sizes including nanogratings and photonic crystals were successfully fabricated using nanoimprint lithography. These results indicate that these acrylates can be used in a wide range of optical and optoelectronic devices where nanopatterned films with high refractive index and transparency are required.

Pamela Wurmann,1 Claudio Karsulovic,1,2 Francisca Sabugo,1 Claudia Hernandez,1 Pedro Zamorano Soto,1 Macarena Mac-Namara1 1Rheumatology Section, Hospital Clínico Universidad de Chile, Santiago, Chile; 2Laboratorio de Inmunomudulacion Neuroendocrina, Biomedical Sciences Institute, Universidad de Chile, Santiago, ChileCorrespondence: Claudio Karsulovic, Sección de Reumatología, Hospital Clínico de la Universidad de Chile, Santos Dumont 999, Independencia, Santiago, Región Metropolitana, 8380456, Chile, Email ckarsulovic@gmail.com