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PURPOSE: To determine the characteristics of current US Otolaryngology-Head and Neck Surgery (Oto-HNS) residents and their medical school. METHODS: Data were manually collected between Dec 2022 and Jan 2023 for 1649 residents attending 163 US-based ACGME accredited Oto-HNS residency programs, reflecting the 2018-2022 cohort. All data were collected from publicly available sources including residency and medical school program websites, web of science, and professional networking sites (ex: LinkedIn, Doximity). Data were analyzed to determine the "feeder" schools which contributed the greatest number and percent of residents. Using univariable linear regression models, we characterized factors which were associated with feeder school status. RESULTS: Of 1649 residents analyzed, 364 (22 %) matched to their home program and 918 (56 %) stayed in the region of their medical school. The median [IQR] number of published papers and abstracts was 5 [3, 9] with an h-index of 2 [1,4]. Factors associated with producing a greater percent of Oto-HNS residents include presence of an interest group, presence of a home program, USNWR research rank of the medical school, Doximity reputation rank of the home residency program, average pre-residency h-index of the school's graduates, and total NIH research funding (each p < 0.001). CONCLUSIONS: In the changing landscape of residency applications after the USMLE Step 1 exam's transition in January 2022 to pass/fail scoring, it is important to objectively characterize current Oto-HNS residents. Findings from this study will inform prospective residents and residency programs seeking to improve access to Oto-HNS. Future small-scale studies may help further identify driving factors within medical school curricula.

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Introduction: Virtual platforms can increase access to global health (GH) education and cross-cultural communication. The Cleveland-Cusco Connection (CCC) is a virtual GH elective between medical schools in the USA and Peru. This elective was held annually from 2020 to 2023, with monthly virtual sessions held in English and Spanish to facilitate bidirectional learning about healthcare systems, culture, and barriers to care in both nations. Using student surveys throughout the electives, we report the outcomes, barriers, and changes of the CCC over 3 years. Methods: We administered pre- and post-elective surveys to students in the elective in their native languages. We evaluated self-reported non-native language skills, health systems, GH knowledge, and cultural sensitivity. We also surveyed students about course efficacy in achieving learning objectives and areas for improvement. We performed non-parametric statistical analyses to evaluate trends in survey responses. Results: Over three academic years, 92 students participated in CCC. Students from the US had statistically significant increases in their self-reported understanding of the Peruvian healthcare and medical education systems (p = 0.013). US students also saw an increase in cultural sensitivity scores, with statistically significant increases in the knowledge (p = 0.035) and motivation components (p = 0.031). The most frequently reported challenges encountered throughout the course included: competing coursework assignments, scheduling conflicts, and language barriers. Discussion: Cross-cultural virtual electives demonstrate effectiveness in teaching trainees about international healthcare systems and can improve cultural sensitivity. Strategies to improve the elective include reducing workload, improving engagement for partner countries, and teaching bilingually. Supplementary Information: The online version contains supplementary material available at 10.1007/s40670-023-01941-6.

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Cyclin-dependent kinase 7 (CDK7) is a master regulatory kinase that drives cell cycle progression and stimulates expression of oncogenes in a myriad of cancers. Inhibitors of CDK7 (CDK7i) are currently in clinical trials; however, as with many cancer therapies, patients will most likely experience recurrent disease due to acquired resistance. Identifying targets underlying CDK7i resistance will facilitate prospective development of new therapies that can circumvent such resistance. Here we utilized triple-negative breast cancer as a model to discern mechanisms of resistance as it has been previously shown to be highly responsive to CDK7 inhibitors. After generating cell lines with acquired resistance, high-throughput RNA sequencing revealed significant upregulation of genes associated with efflux pumps and transforming growth factor-beta (TGF-ß) signaling pathways. Genetic silencing or pharmacological inhibition of ABCG2, an efflux pump associated with multidrug resistance, resensitized resistant cells to CDK7i, indicating a reliance on these transporters. Expression of activin A (INHBA), a member of the TGF-ß family of ligands, was also induced, whereas its intrinsic inhibitor, follistatin (FST), was repressed. In resistant cells, increased phosphorylation of SMAD3, a downstream mediator, confirmed an increase in activin signaling, and phosphorylated SMAD3 directly bound the ABCG2 promoter regulatory region. Finally, pharmacological inhibition of TGF-ß/activin receptors or genetic silencing of SMAD4, a transcriptional partner of SMAD3, reversed the upregulation of ABCG2 in resistant cells and phenocopied ABCG2 inhibition. This study reveals that inhibiting the TGF-ß/Activin-ABCG2 pathway is a potential avenue for preventing or overcoming resistance to CDK7 inhibitors.

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