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Survival of Patients with Multiple Myeloma Treated with Bortezomib-Based Triplets and Autologous Hematopoietic Stem Cell Transplant As First Line in Latin America

Background In transplant-eligible newly diagnosed multiple myeloma (NDMM), triplet combinations including proteasome-inhibitors and immunomodulators are the backbone of induction therapy before autologous stem cell transplant (ASCT). Post-ASCT maintenance with lenalidomide is the standard of care. This approach yields deep responses and long overall survival. In Latin America (LATAM) there is scarce data about the outcome of bortezomib-based triplets and ASCT. The aim of this study was to evaluate overall survival (OS) in Latin American transplant-eligible NDMM patients induced with bortezomib-based triplets and ASCT. Methods Retrospective international multicenter cohort study. Patients older than 18 years with MM, who received bortezomib-based triplets followed by ASCT as first line, between 2010 and 2022 were analyzed. Data were collected from clinical records in a standardized report form. We analyzed clinical characteristics at diagnosis and frontline therapy outcomes. Descriptive statistics were performed. Comparisons of characteristics between groups were made using the Chi-square test, Student´s T-test and ANOVA, as appropriate. Survival analysis was performed using Kaplan-Meier curves, comparisons between groups by Log Rank method, and calculations of the risk relationships by Cox regression. Statistical analysis was performed by using IBM SPSS version 25.0. Results A total of 279 patients with NDMM were included, 124 from Argentina, 20 from Chile, 30 from Mexico, 20 from Paraguay, 43 from Peru, 33 from Uruguay, and 9 from Venezuela. Median age was 57 years (range 29-75) with a male predominance (54.8%). Most patients (58%) were treated in private centers. 56.1% were IgG subtype, 24.8% IgA and 17.3% light chain MM. According to the ISS, 69.2% were classified as ISS II or III. Bone disease was the most frequent myeloma-defining events (75.9%), followed by anemia (61.4%), renal failure (24.2%), and hypercalcemia (20.1%). Fluorescence in situ hybridation (FISH) analysis was performed in 53.4% of patients (only 41% with plasma cell sorting), del17p was the most frequent anomaly found (17.4%), followed by t(4;14) (6%), and t(14;16) (2%). The most frequently used induction regimen was cyclophosphamide-bortezomib-dexamethasone (CyBorD) (38.7%), followed by bortezomib-thalidomide-dexamethasone (VTD) (33.7%), and bortezomib-lenalidomide-dexamethasone (VRD) (27.6%). Very good partial remission (VGPR) or better was achieved in 88.3% for VRD, 81.9% for VTD, and 76.8% for CyBorD (p=0.138). Median time from diagnosis to ASCT was 261.5 days. Only 7 patients received tandem ASCT as first-line consolidation. Maintenance treatment was administered to 88.2% of patients and was based on lenalidomide, thalidomide, bortezomib, and lenalidomide+bortezomib in 67.9%, 16.3%, 8.9% and 3.3%, respectively. Treatments and responses are shown in detail in Table 1. With a median follow-up of 45 months (range 7-140), median progression-free survival (PFS) was 33 months (95% CI, 26.7 - 39.3). Median PFS according to treatment was 21 months (95% CI, 14.3 - 27.7) for VRD, 35 months (95% CI, 22.2 - 47.8) for VTD, and 36 months (95% CI, 28 - 44) for CyBorD, p=0.004. Median OS of the whole cohort was not reached (NR), and 86% at 45 months; 75 months for VRD (95% CI, 44 - 106), and NR for CyBorD and VTD (p=0.284) (Figure 1). In the multivariate analysis hypercalcemia (p=0.01) and extramedullary disease (p=0.03) were the only independent risk factors. Discussion FISH was performed only in half of our patients, and the majority without plasma cell sorting. The main used regimen was CyBorD. Although better PFS was obtained with CyBorD, no significant differences in responses or OS were found between VRD, VTD or CyBorD. The reason why VRD PFS and OS were lower merits further study. We report a high rate of maintenance treatment.

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Chronic rhinosinusitis with nasal polyps and allergic rhinitis as different multimorbid treatable traits in asthma.

Respiratory multimorbidities are linked to asthma, such as allergic rhinitis (AR) with early allergic asthma and chronic rhinosinusitis (CRS) with nasal polyps (CRSwNP) with late nonallergic asthma. Our aim was to investigate the association of asthma severity and control with specific upper airway phenotypes. Patients with asthma were prospectively recruited from 23 pulmonology and ear, nose, and throat clinics. Asthma severity and control, as well as upper airway comorbidities (AR and non-AR [NAR], CRSwNP, and CRS without nasal polyps [CRSsNP]) were assessed according to international consensus guidelines definitions. A total of 492 asthmatic patients were included. Half of the asthmatic patients (49.6%) had associated rhinitis (37.0% had AR and 12.6% had NAR) and 36.2% had CRS (16.7% had CRSsNP and 19.5% had CRSwNP), whereas 14.2% had no sinonasal symptoms. Most cases of AR (78%) and NAR (84%) were present in patients with mild-to-moderate asthma, whereas CRSwNP was more frequent in patients with severe asthma (35% [P< .001]), mainly nonatopic asthma (44% [P< .001]). Patients with severe asthma with CRSwNP had worse asthma control, which was correlated (r= 0.249 [P= .034]) with sinus occupancy. Multiple logistic regression analysis showed that late-onset asthma, intolerance of aspirin and/or nonsteroidal anti-inflammatory drugs, and CRSwNP were independently associated with severe asthma. Severe asthma is associated with CRSwNP, with sinus occupancy affecting asthma control. This study has identified 2 main different upper airway treatable traits, AR and CRSwNP, which need further evaluation to improve management and control of patients with asthma.

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Epidemiology and risk factors for the development of infectious complications in newly diagnosed multiple myeloma: a multicenter prospective cohort study in Uruguay

Infections represent a significant cause of morbidity and mortality in patients with multiple myeloma (MM). In Latin America, data on infectious complications in newly diagnosed MM (NDMM) patients are limited. We conducted a multicenter, prospective cohort study of patients with NDMM in Uruguay between June 2019 and December 2020. Patients with active disease, on active therapy and who provided written informed consent were included. Elegible patients were followed for 6 months from the time of diagnosis and before proceeding to autologous stem cell transplantation or until death, whichever occurred first. Our primary endpoint was the number of infectious events that required hospitalization for ≥ 24 h. Of 124 patients with NDMM, 54 (43.5 %) had infectious complications (74 infectious events), the majority (74.3 %) within the first 3 months from diagnosis. The most common sites of infection were urinary (39.2 %) and respiratory tracts (33.8 %). The microbial agent was identified in 60.8 % of patients with Gram-negative bacteria (71.4 %) as the most common pathogen. Viral and fungal infections were infrequent. In the multivariable analysis, the Eastern Cooperative Oncology Group (ECOG) performance status was ≥ 2 (odds ratio [OR], 2.16; 95 % confidence interval [95 %CI], 1.23 - 3.79; p = 0.008) and creatinine ≥ 2 mg/dl (OR, 2.33; 95 %CI, 1.33 - 4.07; p = 0.003) were independent factors associated with bacterial infections. At 6 months, 14 patients (11.3 %) had died, 50 % related to infectious complications. Bacterial infections are a substantial cause of hospital admissions and early death in patients with NDMM. Antibiotic prophylaxis should be considered to reduce infectious complications in patients with MM.

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Dominantly inherited micro-satellite instable cancer – the four Lynch syndromes - an EHTG, PLSD position statement

The recognition of dominantly inherited micro-satellite instable (MSI) cancers caused by pathogenic variants in one of the four mismatch repair (MMR) genes MSH2, MLH1, MSH6 and PMS2 has modified our understanding of carcinogenesis. Inherited loss of function variants in each of these MMR genes cause four dominantly inherited cancer syndromes with different penetrance and expressivities: the four Lynch syndromes. No person has an “average sex “or a pathogenic variant in an “average Lynch syndrome gene” and results that are not stratified by gene and sex will be valid for no one. Carcinogenesis may be a linear process from increased cellular division to localized cancer to metastasis. In addition, in the Lynch syndromes (LS) we now recognize a dynamic balance between two stochastic processes: MSI producing abnormal cells, and the host’s adaptive immune system’s ability to remove them. The latter may explain why colonoscopy surveillance does not reduce the incidence of colorectal cancer in LS, while it may improve the prognosis. Most early onset colon, endometrial and ovarian cancers in LS are now cured and most cancer related deaths are after subsequent cancers in other organs. Aspirin reduces the incidence of colorectal and other cancers in LS. Immunotherapy increases the host immune system’s capability to destroy MSI cancers. Colonoscopy surveillance, aspirin prevention and immunotherapy represent major steps forward in personalized precision medicine to prevent and cure inherited MSI cancer.

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Desinfección y esterilización en odontología frente al COVID-19.

A partir de la declaración de la Organización Mundial de la Salud del comienzo de la pandemia COVID-19 causada por el virus SARS-CoV-2 en marzo de 2020, los profesionales de la salud se vieron expuestos a esta enfermedad altamente contagiosa y potencialmente mortal que generó múltiples desafíos a toda la comunidad científica. Provocando cambios de paradigmas en la atención de los pacientes y en el uso de las barreras de protección personal. A nivel mundial se crearon múltiples protocolos para la atención odontológica a medida que se iba desarrollando e investigando el comportamiento del virus. Esta revisión bibliográfica resume las indicaciones y recomendaciones basadas en las evidencias disponibles para disminuir las posibilidades de contaminación ante la exposición a este virus, incluyendo medidas a utilizar desde el ingreso del paciente, los métodos de protección personal, la descontaminación y esterilización del material, así como también la desinfección del área de trabajo. Aunque se ha hecho un gran esfuerzo por mejorar los procesos de bioseguridad a nivel científico tecnológico, hay evidencias de que el factor humano sigue siendo el eslabón más débil de esta cadena. Recibido para evaluación: diciembre 2022. Aceptado para publicación: junio 2023. Correspondencia: Brigada Aérea “Capitán Boiso Lanza” CAZ 1. Av. Don Pedro de Mendoza 5553. CP. 12300. Montevideo, Uruguay. Tel. 22224400 interno 1404. E-mail de contacto: leti.bonino@gmail.com Este artículo fue aprobado por el Comité Editorial.

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Satisfacción de los usuarios de odontología del centro de salud “Lasso”

Introducción: La satisfacción de los usuarios que reciben atención odontológica en un establecimiento del Ministerio de Salud Pública del Ecuador, debería ser un indicador medido con regularidad. Sin embargo, las publicaciones de los resultados de dichas indagaciones son escasas en el entorno ecuatoriano. Objetivo: determinar el nivel de satisfacción de los usuarios del servicio de odontología del Centro de Salud de Lasso, provincia de Cotopaxi, en relación con el sexo, edad, nivel de instrucción y tipo de seguro con el que contaban los participantes durante el mes de junio del año 2022. Materiales y métodos: El instrumento fue la encuesta SERVQUAL con 22 preguntas de escala tipo Likert, que mide 5 dimensiones, aplicado en dos momentos, antes de la atención odontológica y después de la misma. Resultados: los valores obtenidos nos muestran que el 69,99% se encontraba satisfecho con la atención, y al aplicar la prueba estadística de Chi-Cuadrado para identificar la independencia entre las variables sociodemográficas y la satisfacción, hubo significancia estadística únicamente entre la edad y la satisfacción del usuario. Conclusión: los usuarios del servicio de odontología del Centro de Salud Lasso están satisfechos en su mayoría con la atención odontológica, siendo la dimensión fiabilidad la única que obtuvo un puntaje global menor al 60%.

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