Citations

BACKGROUND: Among accepted US heart organs, listing centers accept organ offers earliest for White women, followed by Black women, White men, and Black men. Understanding the relationships of center- and geographic-level decisions is necessary to understand waitlist disparities. We sought to determine whether listing center and geography are associated with the first heart organ acceptance by candidate race, since race demographics vary regionally across the United States. METHODS: Using the United Network for Organ Sharing data sets, we identified first organ offers for Black and White candidates listed for heart transplant (October 18, 2018 to September 30, 2024) and compared models with and without listing center effects adjusted for candidate-, donor-, and offer-level variables. RESULTS: Among 20 668 candidates (31.6% Black, 68.4% White, 26.5% women), the adjusted odds of first offer acceptance were lower for Black candidates compared with White candidates (odds ratio, 0.84 [95% CI, 0.76–0.94]; P =0.001) when listing center was not included in the model; but after adjusting for listing center effects, odds were similar by race (odds ratio, 0.98 [95% CI, 0.88–1.10]; P =0.78). There were no clear geographic patterns by center, but centers with lower proportions of Black candidates had higher acceptance rates. CONCLUSIONS: Variability in overall acceptance rate among listing centers explains the lower first offer acceptance for Black compared with White heart candidates. Baseline acceptance rates were linked to the center-level proportion of Black candidates but not geography. Investigation of strategies to systemically improve early acceptance of good heart organs may reduce Black and White disparities in wait time duration.

Abstract The hallmark of heparin-induced thrombocytopenia (HIT) is the presence of immunoglobulin G (IgG) antibodies against platelet factor 4/heparin (PF4/H) complexes, typically detected by PF4/H enzyme-linked immunosorbent assay (ELISA); thus, negative ELISA results are commonly used to exclude this diagnosis. Here, we report a prevalent yet previously unrecognized subset of antibodies that are undetectable by PF4/H ELISA (ELISA−) but activate platelets in the PF4-dependent P-selectin expression assay (PEA+). In 11 patients with clinically confirmed HIT who tested positive in both PF4/H ELISA and platelet activation assays, ELISA−PEA+ antibodies accounted for 65% ± 19% of total platelet-activating IgG activity and coexisted with ELISA+PEA+ antibodies. Consistent with this finding, single-cell cloning from 7 patients with HIT identified 23 PEA+ antibody-producing B-cell clones, of which 17 were ELISA−, outnumbering the ELISA+ clones. Functionally, ELISA−PEA+ antibodies closely resembled ELISA+PEA+ antibodies: platelet binding and activation required exogenous PF4 and were inhibited by FcγRIIA blockade, high-dose heparin, or Fab fragments made from ELISA+PEA+ antibodies. Importantly, these antibodies induced thrombocytopenia in a humanized mouse model of HIT. Despite lacking PF4/H reactivity in ELISAs, they recognize PF4 on platelets and showed no appreciable binding to neutrophil-activating peptide-2, interleukin-8, or PF4 alone. Structurally, these antibodies were heterogeneous, with a subset sharing heavy-chain features with ELISA+PEA+ antibodies. Collectively, our findings demonstrate that ELISA−PEA+ antibodies are a common, previously unrecognized feature of HIT, with functional relevance, supporting the possibility that they play an important, perhaps even central, role in HIT pathogenesis. Defining their prevalence, kinetics, and clinical impact deserves high priority for further investigation.

Enteroblastic, hepatoid, and clear cell carcinomas are rare subtypes of colorectal carcinoma (CRC) with histologic and immunohistochemical (IHC) overlap. We assessed 37 CRCs that possibly represent these subtypes. Provisional criteria for each subtype, along with case photomicrographs and IHC data, were circulated among the authors to provide diagnostic interpretations. Based on plurality consensus, the carcinomas were classified as enteroblastic (n=13), hepatoid (n=6), and clear cell (n=18). Unanimous agreement was reached in 18% (3 clear cell, 3 hepatoid). Interobserver analysis revealed a mean pairwise Cohen κ of 0.63 (range: 0.32 to 0.91), with the hepatoid subtype eliciting the greatest consensus. Clear cell areas were the most likely to intermix with areas of conventional CRC ( P <0.001). Seven patients (20%) had inflammatory bowel disease (mostly linked to enteroblastic CRC). Twenty-three of 34 patients (68%) had nodal metastasis, and 12 (32%) had distant metastasis (mostly to the liver) at presentation. Median recurrence-free survival was 17 months, with enteroblastic cases the most likely to recur (54%, P =0.015). Median follow-up length was 27 months, with 14 patients (40%) dying of disease (representing 7 enteroblastic, 4 hepatoid, and 3 clear cell CRC). Mutations were identified in TP53 (n=8) , APC (n=3) , FBXW7 (n=2), and KRAS (n=1). Inflammatory bowel disease significantly worsened recurrence-free survival on multivariate analysis, while distant metastasis significantly worsened both recurrence-free and overall survival on multivariate analysis. Enteroblastic, hepatoid, and clear cell CRC demonstrate morphologic and IHC overlap, leading to interobserver variability in diagnosis. Given potential differences in clinical correlations and outcomes, more refined criteria are likely necessary.

Common sex chromosome aneuploidies (SCAs) often present with cognitive and cardiovascular dysfunction in humans. To address SCA effects on gene expression and DNA methylation in relevant cell types, we differentiated neural precursor cells (NPCs) and cardiomyocytes (CMs) from human induced pluripotent stem cells (hiPSCs) with different numbers of sex chromosomes, including isogenic and independent lines. As expected, the expression of genes that escape X inactivation (escapees) mostly increases with the number of inactive X chromosomes (Xi). However, allelic analysis shows dampening of escapees specifically on the Xi in XXY compared to XX in both NPCs and CMs, revealing a novel type of dosage compensation in SCA. In contrast, Y-linked gene expression is higher in XXY versus XY NPCs, but the opposite is observed in CMs. This may explain the greater number of differentially expressed autosomal genes in NPCs versus CMs with an added Y chromosome, while effects of added X chromosomes are similar between cell types. Concordantly, changes in autosomal DNA methylation are mainly driven by the presence of a Y chromosome. These findings highlight the cell-type specificity of sex-linked and autosomal gene regulation in SCA conditions.

Atopic dermatitis (AD) is a chronic inflammatory skin disease characterized by pruritus and eczematous lesions. Abrocitinib, a selective Janus kinase 1 (JAK1) inhibitor, has recently been approved in India for moderate-to-severe AD in adults. This prospective real-world case series evaluated the effectiveness and safety of abrocitinib in patients with moderate-to-severe AD who showed an inadequate response to cyclosporine. Nine patients (five females, four males; mean age 19.44 ± 7.68 years, range 10–34 years) were included. Three were adolescents or children in whom abrocitinib was used off-label. The mean disease duration was 13.33 ± 8.06 years, and eight patients had a positive family history of AD. Prior treatments included cyclosporine, methotrexate, and systemic corticosteroids. Abrocitinib was prescribed at a mean dose of 177.77 ± 44.09 mg daily (seven patients received 200 mg, two received 100 mg). Effectiveness was assessed at baseline and weeks 2, 4, 8, and 12 using the Eczema Area and Severity Index (EASI), Investigator’s Global Assessment (IGA), and Peak Pruritus Numerical Rating Scale (PP-NRS). Significant and progressive reductions were observed in all scores. Mean EASI decreased from 48.22 ± 7.88 at baseline to 6.33 ± 3.35 at week 12 ( P < 0.0001). IGA scores improved from 4 to 1.22 ± 0.44, while PP-NRS declined from 8.44 ± 0.52 to 2 ± 0.86 by week 12, with significance evident early in treatment. Most patients demonstrated good adherence, and dose adjustments were required in some cases. One patient developed mild thrombocytopenia. Abrocitinib demonstrated rapid, significant clinical improvement and was generally well-tolerated, supporting its role as an effective option for moderate-to-severe AD, particularly in patients with inadequate response to cyclosporine.

Importance Young adults (YAs; ages 18-39 years) diagnosed with cancer face unique psychosocial challenges, including high distress and poor health-related quality of life (HRQOL). There are few efficacious interventions tailored to their needs. Objective To evaluate the efficacy of Bright IDEAS-YA, a problem-solving skills training intervention tailored for YAs, in reducing distress and improving HRQOL. Design, Setting, and Participants This randomized clinical trial was conducted at 3 academic medical centers and enrolled participants between February 2021 and March 2024. Eligible participants were aged 18 to 39 years, within 4 months of a first cancer diagnosis, and undergoing systemic therapy. Participants completed surveys at baseline and 3, 6, 12, and 24 months. Intervention Bright IDEAS-YA is a 6-session, one-on-one intervention that teaches a structured approach to problem-solving. Enhanced usual care (EUC) included standard psychosocial care plus a list of adolescent and YA resources. Main Outcomes and Measures Primary outcomes were depression and anxiety (Patient-Reported Outcomes Measurement Information System Short Forms) and HRQOL (Functional Assessment of Cancer Therapy-General) at 6 months. Problem-solving ability (Social Problem-Solving Inventory-Revised Short Form) was examined as a mediator. Analyses used linear mixed effects models and mediation analysis. Results Of the 1128 YAs screened, 344 YAs (median [IQR] age, 31.27 [25.78-36.38] years; 251 female [62.5%]) enrolled, with 171 allocated to intervention and 173 allocated to control. Overall, 296 YAs (86.0%) and 280 YAs (81.4%) completed 3- and 6-month surveys, respectively. At 6 months, the intervention group showed significantly greater improvements than EUC in depression (effect size estimate, −3.23 points; 95% CI, −4.93 to −1.53 points; P &amp;lt; .001), anxiety (effect size estimate,−2.43 points; 95% CI, −4.05 to −0.81 points; P = .003), and HRQOL (effect size estimate, 3.40 points; 95% CI, 0.34 to 6.45 points; P = .03). These changes were clinically meaningful. Mediation analyses showed that improvements in depression and anxiety were partially due to increased problem-solving ability, particularly reductions in negative problem orientation. Sex and education were moderators of treatment effect, with the treatment effect on anxiety being greater for males (effect size estimate, −5.29 points; 95% CI, −7.97 to −2.60 points) and the treatment effect on anxiety (effect size estimate, −6.94 points; 95% CI, −10.50 to −3.43 points) and depression (effect size estimate, −7.47 points; 95% CI, −11.20 to −3.74 points; P &amp;lt; .001) being greater for those with lower education. Conclusions and Relevance In this randomized clinical trial of Bright IDEAS-YA, intervention participants had significantly reduced distress and improved HRQOL relative to control. These findings suggest that Bright IDEAS-YA may be offered as supportive care for YAs with cancer to improve psychosocial outcomes. Trial Registration ClinicalTrials.gov Identifier: NCT04585269

ABSTRACT Background Intravesical Bacillus Calmette–Guerin (BCG) is a live attenuated vaccine for tuberculosis. Intravesical BCG (iBCG) administration is a highly effective immunotherapy for non‐muscle invasive bladder cancer (NMIBC). Although live attenuated vaccines are generally contraindicated in solid organ transplant recipients (SOTR), iBCG has been utilized for NMIBC in SOTR. We describe the clinical manifestations, management, and outcomes of disseminated Mycobacterium bovis ‐BCG infection (Mb‐BCGi) following iBCG therapy in SOTR for NMIBC. Methods All adult patients (> 18 years of age) diagnosed with NMIBC who received iBCG across three tertiary referral and transplant centers between 2000 and 2025 were identified. The study cohort consisted of SOTR who had received iBCG for NMIBC and subsequently developed disseminated Mb‐BCGi. English language literature review was performed to identify additional cases. Results A total of 4207 patients received iBCG during the study period. Thirty (0.71%) were SOTR, of whom two (6.7%) developed disseminated Mb‐BCGi, including bloodstream infection and prostate abscesses. Literature review identified two additional disseminated Mb‐BCGi cases in SOTR with lungs, bloodstream, and native kidney involvement, and one fatality. All cases required extended antimycobacterial therapy. Median times from SOT to Mb‐BCGi and from iBCG to Mb‐BCGi were 104 and 8 months, respectively. Conclusion SOTR appear to be at a higher risk of disseminated Mb‐BCGi following iBCG. Administration of iBCG in SOTR with NMIBC warrants careful risk‐benefit assessment and subsequent close monitoring. image

Abstract Purpose: B7-H3 (CD276) represents a promising therapeutic target tested in high-risk localized and treatment-refractory metastatic prostate cancer. To guide therapeutic development and treatment strategies, we examined prostate tumors and evaluated expression, molecular features, and overall survival (OS), accounting for tissue site, hormone sensitivity status, and race. Experimental Design: A total of 8,157 prostate cancer samples with paired DNA/RNA were analyzed based on annotations by tissue site, self-reported race, and disease state: hormone-sensitive prostate cancer (HSPC), castration-resistant prostate cancer (CRPC), or neuroendocrine prostate cancer (NEPC). Expression quartiles were B7-H3–high (&gt;75th percentile) or B7-H3–low (&lt;25th percentile). The OS was evaluated using Kaplan–Meier and Cox proportional hazards models. Results: B7-H3 expression was broadly maintained but varied by tumor site, hormone sensitivity status, and race. High expression aligned with AR-associated transcription factors (HOXB13 and FOXA1), AR-associated pathogenic dysregulations (AR-V7, SPOP, FOXA1, and TMPRSS2:ERG fusions), and actionable surface antigens (TROP2 and NECTIN-4). Weak correlations were found for lineage-plastic program regulators (EZH2, SOX2, and ASCL1) and NEPC-associated surface antigens (DLL3 and CEACAM5). High B7-H3 expression in primary tumors and HSPCs portended adverse OS [hazard ratio (HR), 1.342 and 1.30; confidence interval (CI), 1.19–1.512 and 1.15–1.46; q &lt; 0.0001] although it was favorable in metastatic tumors (HR, 0.823; CI, 0.719–0.942; q = 0.0048). No significant differences in OS were observed among CRPCs and NEPCs, although OS varied by race, with the poorest survival in Asian/Pacific Islander patients with metastatic prostate cancer (HR, 3.72; CI, 1.49–9.29; q = 0.012). Conclusions: Maintained B7-H3 expression in various prostate cancer settings supports its viability as a target. The associations with AR-related molecular factors, surface antigens, and investigative targets for cell therapy or antibody–drug conjugates suggest potential dual-targeting strategies. See related article by Sharma et al., p. 3365

Background: Multidisciplinary team (MDT) care facilitates coordinated expertise that leads to improved patient safety and outcomes. Yet, no prior study has quantified reported benefits from plastic surgery–inclusive MDTs across several procedures. We thereby hypothesized that plastic surgery–inclusive MDTs would lead to better surgical outcomes following cranioplasty, spine surgery, abdominoperineal resection, abdominal wall reconstruction, and extremity reconstruction, compared with the primary specialties acting alone. Methods: Following Preferred Reporting Items for Systematic Reviews and Meta-analysis guidelines, we searched PubMed, Embase, Scopus, and Web of Science for comparative studies comparing outcomes of care provided by plastic surgery–inclusive MDT and non–plastic surgery–inclusive MDT. Results: Thirty studies with a total of 9614 patients were included. Plastic surgery–inclusive MDT care was associated with reduced odds of wound complications in abdominoperineal resection (odds ratio [OR] = 0.65; 95% confidence interval [CI], 0.47–0.90) and spine procedures (OR = 0.57; 95% CI, 0.33–0.97). In addition, plastic surgery–inclusive MDT care for extremity reconstruction and abdominal wall reconstruction was associated with lower odds of wound complications ([OR = 0.24; 95% CI, 0.12–0.46] [OR = 0.33; 95% CI, 0.12–0.90]), reoperation ([OR = 0.13; 95% CI, 0.04–0.49] [OR = 0.26; 95% CI, 0.03–2.39]), and shorter length of stay (mean difference, −19.5 and −0.62, respectively). Conclusions: Plastic surgery–inclusive MDT care significantly reduces wound complication and reoperation rates across complex surgical procedures. These findings support the formal integration of plastic surgeons within MDTs to improve patient outcomes and surgical safety.