SUMMARY The EZH2 histone methyltransferase mediates the humoral immune response and drives lymphomagenesis through formation of bivalent chromatin domains at critical germinal center (GC) B cell promoters. Herein we show that the actions of EZH2 in driving GC formation and lymphoma precursor lesions require site-specific binding by the BCL6 transcriptional repressor and the presence of a non-canonical PRC1-BCOR-CBX8 complex. The chromodomain protein CBX8 is induced in GC B cells, binds to H3K27me3 at bivalent promoters, and is required for stable association of the complex and the resulting histone modifications. Moreover, oncogenic BCL6 and EZH2 cooperate to accelerate diffuse large B cell lymphoma (DLBCL) development and combinatorial targeting of these repressors results in enhanced anti-lymphoma activity in DLBCLs.

Background: Pediatric emergency telemedicine consultations have been shown to provide support to community emergency departments treating critically ill pediatric patients. However, despite the recognized value of telemedicine, adoption has been slow. To determine why clinicians frequently do not use telemedicine when it is available for pediatric patients, as well as to learn how to improve telemedicine programs, we conducted a qualitative study using stakeholder interviews.Methods: We conducted a qualitative study using grounded theory methodology, with in-depth interviews of referring and accepting physicians and referring, transport, and transfer center nurses. We analyzed data iteratively and adapted the interview guide based on early interviews. We solicited feedback from the participants on the conceptual model.Results: Sixteen interviews were conducted; all respondents had been involved in a telemedicine consultation at least five times, with some having used telemedicine more than 30 times. Analysis resulted in three themes: 1) recognizing and addressing telemedicine biases are central to gaining buy-in; 2) as technology advances, telemedicine processes need to adapt accordingly; and 3) telemedicine increases collaboration among health care providers and patients/families in the patient care process.Conclusions: To improve patient care through increased use of telemedicine for pediatric emergency consultations, processes need to be modified to address provider biases and end-user concerns. Processes should be adapted to allow users to utilize a variety of technologies (including smartphones) and to enable more users, such as nurses, to participate. Finally, telemedicine can be used to improve the patient and family experience by including them in consultations.

Hospital-to-home transitions are critical opportunities to promote patient safety and high-quality care. However, such transitions are often fraught with difficulties associated with increased health care use and poor patient satisfaction. OBJECTIVE: In this review, we determine which pediatric hospital discharge interventions affect subsequent health care use or parental satisfaction compared with usual care. DATA SOURCES: We searched 7 bibliographic databases and 5 pediatric journals. STUDY SELECTION: Inclusion criteria were: (1) available in English, (2) focused on children <18 years of age, (3) pediatric data reported separately from adult data, (4) not focused on normal newborns or pregnancy, (5) discharge intervention implemented in the inpatient setting, and (6) outcomes of health care use or caregiver satisfaction. Reviews, case studies, and commentaries were excluded. DATA EXTRACTION: Two reviewers independently abstracted data using modified Cochrane data collection forms and assessed quality using modified Downs and Black checklists. RESULTS: Seventy one articles met inclusion criteria. Although most interventions improved satisfaction, interventions variably reduced use. Interventions focused on follow-up care, discharge planning, teach back-based parental education, and contingency planning were associated with reduced use across patient groups. Bundled care coordination and family engagement interventions were associated with lower use in patients with chronic illnesses and neonates. LIMITATIONS: Variability limited findings and reduced generalizability. CONCLUSIONS: In this review, we highlight the utility of a pediatric discharge bundle in reducing health care use. Coordinating follow-up, discharge planning, teach back-based parental education, and contingency planning are potential foci for future efforts to improve hospitalto-home transitions.

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