Citations

Abstract Background Low titer group O whole blood (LTOWB) use across the United States is increasing. This simulation calculated the number of female donors who would qualify for LTOWB donation if HLA‐antibody screening was implemented in different strategies. Methods Using US nativity data and information on blood donors from 2023, a model was constructed that calculated how many of these donors would be males and nulliparous females, neither of which require HLA‐antibody screening before LTOWB donation. The model then calculated how many parous females would be HLA‐antibody sensitized based on each woman's parity in three antibody screening scenarios: all parous women, all parous women ≥50 years old, and all parous women older than the 99th percentile of the age of final birth. These calculations were performed for RhD‐negative and RhD‐positive donors. Results The model calculated that there would be 222,239 RhD‐negative male and 74,655 nulliparous RhD‐negative female donors. If all group O RhD‐negative parous females were screened, 109,479 were calculated to not be HLA‐sensitized for a total of 406,373 LTOWB eligible donors. If only the group O RhD‐negative females ≥50 years were screened, 59,138 donors would not be HLA‐sensitized for a total of 356,032 LTOWB eligible donors. If only the group O RhD‐negative females ≥42 years, the 99th percentile for last birth age, were screened, 80,375 donors would not be HLA‐sensitized for a total of 377,269 LTOWB eligible donors. Higher numbers of LTOWB donors were realized when RhD‐positive males and females were modeled. Conclusion HLA‐antibody screening realizes additional LTOWB donors.

Importance Recent case reports suggest that B antigen–containing blood products may be associated with anaphylactic transfusion reactions in recipients with preformed immunoglobulin E to galactose- α -1,3-galactose (alpha-gal). Objective To test the association of local alpha-gal syndrome (AGS) prevalence and allergic transfusion reaction (ATR) in patients with blood type O. Design, Setting, and Participants In this international, multicenter, retrospective cohort study at academic medical centers, sites were assigned to AGS high- or low-prevalence clusters based on the known geographic distribution of AGS. Data were collected on platelet or plasma transfusions and ATRs during 2020 to 2024. Consecutive patients receiving platelet or plasma transfusions were included. Exposures Patients with blood type O who received B or AB units and patients with blood type O who received O units (reference group) in AGS high- and low-prevalence clusters were compared. Main Outcomes and Measures Before data collection, the hypothesis was that if transfusion-related alpha-gal syndrome (TRAGS) is a true clinical entity, excess ATRs to group B or AB units would be detected in AGS high-prevalence regions exclusively. The main measure was the overall risk ratio (RR) for ATRs to B or AB plasma or platelets in AGS high- vs low-prevalence clusters. Results In total, 558 823 platelet and plasma transfusions at 40 sites in 5 countries were analyzed, of which ATRs occurred in 1744 transfusions (0.3%). In the US AGS high-prevalence cluster (9 sites), significantly more ATRs of any severity occurred among patients with blood type O who received B or AB units vs patients with blood type O who received O units (overall RR, 3.93; 95% CI, 2.96-5.21; P < .001). In contrast, in the primary analysis of the AGS low-prevalence cluster (15 sites), excess ATRs to B or AB units were not detected. In subgroup analyses among patients with blood type O receiving B units, the RR for moderate to severe ATRs was 9.14 (95% CI, 5.39-15.52; P < .001) in the AGS high-prevalence cluster vs 2.15 (95% CI, 1.34-3.47; P = .002) in the AGS low-prevalence cluster. Outside the US, a signal consistent with TRAGS was not detected. Conclusions and Relevance This cohort study provides provocative epidemiologic evidence that TRAGS may be a unique manifestation of AGS and a previously unrecognized risk associated with transfusion. In AGS high-prevalence regions, blood collectors and hospital transfusion services should consider approaches to preventing severe ATRs from B or AB plasma or platelet units.

Abstract Sepsis is a multi-system physiological syndrome defined as a dysregulated host response to infection. Despite recent advances clinicians continue to depend on clinically or physiologically defined syndromes as poor classifiers and therefore fail to accurately predict outcome or responses to treatment. Recent studies suggest that advances in screening, diagnosis, prognosis, and treatment of sepsis can be used to tailor immunomodulatory therapies. In the present narrative review, we critically analyze important academic literature published between January 2025 and June 2026 with a focus on epidemiology, screening, diagnosis, prognosis and personalized management. We believe that sepsis care will soon be defined by the convergence of rapid diagnostics, multi-omics profiling, and artificial intelligence, enabling a shift from generalized treatment approaches toward truly personalized, dynamic patient management. While the scientific and technological foundation for this transformation is emerging rapidly, clinical validation using innovative (adaptive) clinical trial design is required. Successful implementation within routine care will require multidisciplinary collaboration, robust infrastructure, clinician and patient engagement, and healthcare systems capable of integrating innovation into practice. The coming years may see a paradigm shift in sepsis management comparable to advances observed in personalized management of malignancies.

ABSTRACT Genetic counselors describe their professional identity as who they are (personal characteristics and attributes), what they do (actions and skills), and what they possess (training and knowledge). A shared multidimensional perspective highlights the transferability of their skills across diverse roles and settings. This qualitative study aimed to identify factors that influence genetic counselors' perceptions and formation of their professional identities. Using Social Identity Theory as a theoretical framework, semi‐structured recorded interviews were conducted with 50 genetic counselors who were purposefully sampled to ensure diversity of personal demographics (gender, race/ethnicity, sexual orientation, disability, and caregiver status), as well as years, settings, and roles in genetic counseling practice. Transcripts were coded and subjected to codebook thematic analysis using NVivo. Professional identity was influenced by internal validation (sense of purpose in work, pride, and confidence), external validation (from other colleagues, work system, degree of autonomy, and patients), one's personal identities (demographics, life experiences, and persona), and connections with others (professional network, peer support, role models, and giving back). Alignment and misalignment of these factors and the perceived collective identity of the profession impacted genetic counselors' sense of belonging to the profession both positively and negatively, respectively. Continued efforts to diversify the profession, as well as expanded opportunities for genetic counselors to work in new settings and roles, require critical reflection and discussion about the collective identity of the genetic counseling profession. The findings of this study can inform the recruitment, training, credentialing, continuing education, and retention of genetic counselors to ensure that genetic counselors, regardless of their personal identities or their work roles or settings, develop and maintain a sense of belonging and commitment to the profession and its values. In turn, the support of professional identity formation can positively impact genetic counselors' job satisfaction, competency, and delivery of healthcare to their patients and the populations they serve.

ABSTRACT Pediatric radiation therapy presents unique challenges compared to adult treatments, including those of immobilization, potential need for sedation, and the critical importance of accurate, reproducible positioning. Additionally, heightened attention to imaging doses is necessary to minimize long‐term toxicity in survivors. Many of these challenges must be addressed during the process of simulation. This report provides guidelines for pediatric radiotherapy simulation from the Children's Oncology Group. These guidelines cover all anatomic sites and include recommendations for photon and proton therapies, as well as specialized procedures such as stereotactic body radiation therapy, brachytherapy, and total body irradiation. These guidelines are presented as recommendations rather than prescriptive standards as the practice will vary depending on patient age, diagnosis, clinical judgment, and institutional resources.

Abstract Genetic studies have significantly advanced our understanding of tauopathies, yet the genetic aetiology of Pick’s disease, a rare 3-Repeat tauopathy, remains unclear. The MAPT p.A152T variant has been identified as a risk factor for Alzheimer’s disease and progressive supranuclear palsy, but its role in Pick’s disease is unknown. In this study, we examined the prevalence of MAPT p.A152T in the largest series of neuropathologically confirmed Pick’s disease cases to date (n = 401). Through genotyping, we identified a single mutation carrier in the Pick’s disease cohort (minor allele frequency = 0.12%). We previously reported MAPT p.A152T at a 0.20% frequency in healthy controls (n = 2456), suggesting that it does not associate with 3-Repeat tauopathy risk. To further investigate the effect of the variant on MAPT transcript expression, we used bulk RNA sequencing in Alzheimer’s disease and progressive supranuclear palsy A152T mutation carriers. We did not detect significant differences in 4-Repeat tau levels, though preliminary trends may indicate more nuanced effects that need to be examined with long-read sequencing in a larger series. Overall, our study suggests that MAPT p.A152T does not increase Pick’s disease risk and may instead be linked to 4-Repeat or mixed tau pathologies, warranting further functional investigation.

Summary Outcomes for high‐risk paediatric classic Hodgkin lymphoma (cHL) improved with the addition of brentuximab vedotin (Bv) to doxorubicin, vincristine, etoposide, prednisone and cyclophosphamide (AVEPC) chemotherapy. We evaluated the prognostic implications of distant extra‐nodal sites contributing to stage IV disease. On AHOD1331 (NCT02166463), patients aged 2–21 years with high‐risk cHL (stage IIB with bulk/IIIB/IVA/IVB) were randomized to 5 cycles of doxorubicin, bleomycin, vincristine, etoposide, prednisone and cyclophosphamide (ABVE‐PC) versus Bv‐AVEPC. Patients with stage IV disease, determined by protocol‐defined and centrally reviewed Positron Emission Tomography ‐ Computed Tomography (PET‐CT), were identified. Baseline characteristics and progression‐free survival (PFS) were compared by pattern of stage IV involvement (lung, bone, bone marrow, multiple sites and others). A total of 340 patients (median age 15 years) with stage IV disease were included. Of these patients, 173 (51%) received ABVE‐PC and 167 (49%) Bv‐AVEPC. PFS was highest with lung‐only involvement (4‐year PFS 88.6%) and lowest with bone marrow‐only involvement (4‐year PFS 71.9%). Compared to ABVE‐PC, Bv‐AVEPC improved PFS among all stage IV patients (hazard ratio [HR] 0.53, 90% confidence interval (CI) 0.33–0.85) and in the lung‐only and bone‐only subgroups. However, no PFS benefit was observed in those with bone marrow‐only involvement. Among paediatric patients with stage IV cHL, Bv‐AVEPC improved PFS across most patterns of stage IV disease, except in those with bone marrow involvement. These results will guide efforts to improve outcomes among children with stage IV cHL.