Assessment of measurable residual disease (often referred to as “minimal residual disease”) has emerged as a highly sensitive indicator of disease burden during and at the end of treatment and has been correlated with time-to-event outcomes in chronic lymphocytic leukemia. Undetectable-measurable residual disease status at the end of treatment demonstrated independent prognostic significance in chronic lymphocytic leukemia, correlating with favorable progression-free and overall survival with chemoimmunotherapy. Given its utility in evaluating depth of response, determining measurable residual disease status is now a focus of outcomes in chronic lymphocytic leukemia clinical trials. Increased adoption of measurable residual disease assessment calls for standards for nomenclature and outcomes data reporting. In addition, many basic questions have not been systematically addressed. Here, we present the work of an international, multidisciplinary, 174-member panel convened to identify critical questions on key issues pertaining to measurable residual disease in chronic lymphocytic leukemia, review evaluable data, develop unified answers in conjunction with local expert input, and provide recommendations for future studies. Recommendations are presented regarding methodology for measurable residual disease determination, assay requirements and in which tissue to assess measurable residual disease, timing and frequency of assessment, use of measurable residual disease in clinical practice versus clinical trials, and the future usefulness of measurable residual disease assessment. Nomenclature is also proposed. Adoption of these recommendations will work toward standardizing data acquisition and interpretation in future studies with new treatments with the ultimate objective of improving outcomes and curing chronic lymphocytic leukemia.

IMPORTANCEOpioid prescriptions for treatment of pain in emergency departments (EDs) are associated with long-term opioid use. The temporal pattern of opioid prescribing in the context of the opioid epidemic remains unknown. OBJECTIVE To examine the temporal pattern of opioid prescribing within an ED for varying pain conditions between 2009 and 2018. DESIGN, SETTING, AND PARTICIPANTS A population-based, cross-sectional study was conducted at the ED of an urban academic medical center. All patients treated within that ED between January 1, 2009, and December 31, 2018, were included. MAIN OUTCOMES AND MEASURESThe proportion of patients prescribed an opioid for treatment of pain in the ED temporally by condition, condition type, patient demographics, and physician prescriber.

Tyrosine kinase inhibitors (TKIs) have dramatically changed the survival of chronic myeloid leukemia (CML) patients, and treatment-free remission (TFR) has recently emerged as a new goal of CML treatment. The aim of this work was to develop recommendations for TKI discontinuation in Latin America (LA), outside of clinical trials. A working group of CML experts from LA discussed 22 questions regarding TFR and reached a consensus for TFR recommendations in the region. TFR is indicated in patients in first chronic phase, with typical BCR-ABL transcripts, under TKI treatment of a minimum of 5 years, in sustained deep molecular response (DMR; molecular response 4.5 [MR4.5]) for 2 years. Sustained DMR must be demonstrated on at least 4 international reporting scale quantitative polymerase chain reaction (PCR) tests, separated by at least 3 months, in the immediate prior 2 years. After second-line therapy, TFR is indicated in previously intolerant, not resistant, patients. Molecular monitoring is recommended monthly for the first 6 months, every 2 to 3 months from months 7 to 12, and every 3 months during the second year, indefinitely. Treatment should be reintroduced if major molecular response is lost. Monitoring of withdrawal syndrome, glucose levels, and lipid profile is recommended after discontinuation. After TKI reintroduction, molecular monitoring is indicated every 2 to 3 months until MR4.0 achievement; later, every 3 to 6 months. For the TFR attempt, having standardized and reliable BCR-ABL PCR tests is mandatory. These recommendations will be useful for safe discontinuation in daily practice and will benefit patients who wish to stop treatment in emergent regions, in particular, with TKI-related chronic adverse events.

Introducción y Objetivos. Las NMPC son relativamente raras, con incidencias que varían entre 0,47-1,03/100.000 habitantes, es importante para el país conocer las características clínicas de estos pacientes. Se presenta el primer reporte del trabajo del registro colombiano de NMPC. Materiales y métodos. Estudio observacional multicéntrico retrospectivo y prospectivo en ocho centros del país, de abril de 2013 a diciembre de 2014. Las variables cualitativas se presentan con frecuencias absolutas y relativas; y las cuantitativas se resumen en medidas de tendencia central y dispersión. Resultados. 11 centros fueron aprobados, 8 ingresaron pacientes. En los primeros 179 casos reportados el 50 % eran hombres, la edad promedio al diagnóstico 58,7 años (rango: 19-92). 93 son Trombocitemia Esencial (TE), 55 Policitemia Vera (PV), 31 Mielofibrosis (MF). 41% tenían esplenomegalia al diagnóstico. 20% tuvieron complicaciones trombóticas y 12,85% sangrado. Solo en 57,5% se realizó JAK, de ellos en 53,5% positivo, en especial solo 60% de las PV. 8% de los casos no tenían estudio de médula ósea, 29,3% tiene algún grado de fibrosis. El hallazgo más frecuente fue hiperplasia megacariocítica en 59,78%. Más del 50% de pacientes estaban sintomáticos al diagnóstico. Solo 11% no recibieron tratamiento farmacológico; los más frecuentes fueron Hidroxiurea en 149 y ASA en 79 casos. Con promedio de seguimiento de 52,6 meses; 97,21% de los pacientes están vivos. Conclusiones. Los hallazgos sugieren que algunas características de las NMPC podrían ser diferentes a lo reportado en otras series, lo que valida la importancia del esfuerzo de recoger información local.

Background: An estimated 43,390 breast augmentation surgeries (86,780 implants) and 1486 breast implant reconstructions are performed annually in Colombia, representing the second-most breast surgery destination in South America, the fourth in the western hemisphere, and the fifth country worldwide. No previous reports have evaluated the incidence of breast implant–associated anaplastic large cell lymphoma (BIA-ALCL) epidemiology or outcomes in a Hispanic population. Published data on the incidence of this disease in Colombia are unknown; therefore, a National Joint Multidisciplinary Committee was developed between the Colombian scientific societies of Mastology, Plastic Surgery, Hemato-Oncology, and the Invima (The National Food and Drug Surveillance Institute) to track national cases of BIA-ALCL. Materials and Methods: We performed a retrospective review (survey-based study) of historical cases since 2011–2019, and a prospective collection of all patients with a confirmed World Health Organization diagnosis of BIA-ALCL identified in a newly established National Registry of BIA-ALCL. The trial was approved by Institutional Review Board (IRB).