OBJECTIVES/GOALS: As the clinical and translational research enterprise evolves toward addressing health equity and the science of translational science, the CE Brokers are exploring new avenues for impacting the CTSA consortium. METHODS/STUDY POPULATION: Since 2013, managers of Community Engagement (CE) programs across the NCATS CTSA institutes have met monthly to build connections, share knowledge, and advocate for the boundary spanner role. As the clinical and translational research enterprise evolves toward addressing health equity and the science of translational science, the CE Brokers are exploring new avenues for impacting the CTSA consortium. The CE Brokers are composed of 140 individuals from 58 CTSA-associated institutions, and have a long history that has fostered rich, trusting relationships. The growth and strength of this group has primed it to pivot with the new NCATS direction to contribute meaningfully to the science of community engagement and continue the work of improving health equity within the communities we serve. RESULTS/ANTICIPATED RESULTS: In 2022; we surveyed its members about their roles and responsibilities; the ways the network has contributed to their hub’s adoption and development of best practices and innovations; resources and lessons learned; the creation of opportunities for members to collaboratively conduct and disseminate original research; and research on the science of CE. Grounding ourselves in this initial data, we have developed interview questions to take the inquiry further, by gathering qualitative data on the impact of the group: How the Brokers group impacted them personally and professionally; How the Brokers impacted the work of their CTSA; In three words, describe the group; How could the CE Brokers contribute to the science of community engagement? DISCUSSION/SIGNIFICANCE: Together, we will identify themes supported by quotes to inform how the CE Broker group is most effectively moving the CTSAs’ mission forward and how it can be improved. These will be shared at the Translational Science Meeting, 2023.

OBJECTIVES/GOALS: Non-operative management is preferred for pediatric solid organ injury (SOI). Despite this children treated at adult trauma centers (ATC) are more likely to be treated surgically and have worse outcomes than those treated at pediatric trauma centers (PTC). We hypothesize there are disparities by sex and race in management of pediatric SOI at ATC vs PTC. METHODS/STUDY POPULATION: Retrospective review of the National Trauma Data Bank (NTDB) from 2010-2018 was conducted. Inclusion criteria were age£18 and injury to spleen, liver or kidney. Outcomes at American College of Surgeons accredited ATC, PTC, and combined ATC/PTC trauma centers were evaluated. The primary outcome was operative management. Secondary outcomes include length of stay, and in-hospital complications. Multivariate logistical regression adjusting for race, sex, and insurance type will be performed. RESULTS/ANTICIPATED RESULTS: 40,111 children were treated for SOI from 2010-2018. 39.3% were treated at an ATC and 26.4% at a PTC. Of children treated at an ATC, 62% were White, 17% were Black, and 1% were Asian. Children treated at the PTC were 60% White, 20% Black, and 0.9% Asian. Primary insurance type was Medicaid for 33% of patients at an ATC and 39% at PTC. Median length of stay at ATC and PTC was 4 days (2-7) and 3 days (2-6) respectively. 3.85% of patients at ATC underwent splenectomy compared to 0.8% at PTC. It is anticipated that further analysis will demonstrate that ICU admission, transfusion, embolectomy, and other operative interventions will be more prevalent at ATC than MTC. Moreover, we anticipate that multivariate logistical regression will show the odds of receiving operative management at each center differ by race, sex and insurance type. DISCUSSION/SIGNIFICANCE: Initial analysis of the NTDB from 2010-2018 shows that children treated for SOI at ATC receive operative interventions more often than those treated at PTC. Elucidating disparities in SOI care is an important step towards minimizing the impact of these disparities and better allocating resources such that they may be eliminated.

OBJECTIVES/GOALS: The Stanford CTSA Program has started to create Clinical Research Units (CRUs) with the goal to establish CRUs in all clinical departments by the end of 2020. CRUs will be responsible for managing the portfolio of projects proposed and conducted by faculty within departments. CRUs will be responsible for reviewing all clinical research studies. METHODS/STUDY POPULATION: CRUs will be an integral part of the Stanford’s research infrastructure, tasked with 5 key functions to ensure clinical research conducted by Stanford investigators: scientific merit, feasibility, funding, compliance, progress. Each CRU will review all clinical research projects proposed by investigators within the department prior to moving forward with IRB review. Studies will be evaluated annually to ensure compliance with the protocol, applicable laws and regulations, and recruitment goals. The Stanford CTSA will provide guidelines, SOPs and personnel to assist CRUs. In fall 2019, a landscape analysis of SoM clinical departments was conducted to identify:

1. 1) similar existing CRU-like systems,

2. 2) unique needs of departments/divisions for developing CRUs and

3. 3) barriers to implementation.

RESULTS/ANTICIPATED RESULTS: Challenges the pilot CRU has faced include communication and concerns regarding additional obstacles to conducting research. However, as study teams moved through the initial CRU formation, the feedback was overwhelmingly positive. Study teams were appreciative of the constructive feedback and the support for setting up studies. Results from the landscape analysis identified CRU-like systems in 5 departments and highlighted concerns regarding resources needed to implement CRUs. Based on feedback from the landscape analysis, a faculty and operational lead was identified in each clinical department to oversee CRU implementation. Facilitated by CTSA personnel, CRU leads have met quarterly since April 2019. Meetings consist of discussing expectations, sharing ideas and identifying potential roadblocks. DISCUSSION/SIGNIFICANCE OF IMPACT: CRUs will constitute a new organizational structure that consists of teams of investigators and staff to promote high quality, efficient clinical research and enhance collaborative opportunities. The CRU leadership will champion new initiatives in CTR and create pathways for investigators to access research infrastructure and resources. CONFLICT OF INTEREST DESCRIPTION: NA.

OBJECTIVES/SPECIFIC AIMS: To provide students an opportunity to select health care-oriented course work that reflects both their interests and the increasingly diverse spectrum of health professions education and health care careers. To increase the opportunity for students to enter professional schools and health care professions with enhanced engagement and experience. METHODS/STUDY POPULATION: The 4-credit elective (Selective) curriculum is a component of the 38 credit Duke School of Medicine Master of Science in Biomedical Sciences (MBS) program which is completed over 10.5 months. Students work closely with their advisors to choose activities that reflect their interests. Selectives are offered by an array of schools, institutes, and programs within Duke University, including: the School of Medicine, School of Law, Global Health Institute, Bioethics and Science Policy Master Program, Clinical Research Training Program, Center for Documentary Studies, and Medical Informatics. Students may also pursue directed studies in areas such as health policy, or an inter-professional trip to Honduras. In addition to the course-based Selectives, three research practicum options are offered: Community Engagement, Clinical Research (Duke Office of Clinical Research), and a self-selected mentored research experience. Finally, the MBS program offers 2 in-house specific Selectives: Fundamentals of Learning: Theory and Practice, and Planning for Health Professions Education. RESULTS/ANTICIPATED RESULTS: The MBS program accepted its first cohort of students in June 2015. Two cohorts have graduated and the third has begun (n=30, 2016; n=42, 2017; n=43 enrolled, 2018). Our students come from diverse background with a third from populations historically underrepresented in STEM due to race/ethnicity, and another third underrepresented due to other factors such as low socioeconomic status, first generation to college, LGBQT, and those from rural and immigrant communities. Thus far, Selective distribution has been: Clinical research practicum (7, 2016; 14, 2017; 9, 2018); Mentored research practicum (2, 2016; 1, 2017); Community engagement practicum (7, 2016; 4, 2017; 5, 2018); Planning for health professions educations (14, 2016; 32, 2017; 33, 2018), Fundamentals of learning: Theory and Practice (7, 2016; 17, 2017; 18, 2018); documentary film (1, 2016); inter-professional trip to Honduras (2, 2016, 2, 2017). Since the implementation of the curriculum, at least 53 of 70 students who have applied (76%) were admitted to health professions or other graduate schools despite having lower initial MCAT and undergraduate GPAs in aggregate than the average of students who matriculate to allopathic medical school programs: 41 to medical schools, 3 to dental school, 2 each to osteopathic and physician assistant schools and 1 each to physical therapy, business school and law school. Eighteen of the 2016 graduates, and 21 of the 2017 graduates work in research for their gap year following graduation, the majority being employed in our institution’s research programs providing a pipeline of trained research assistants and coordinators. DISCUSSION/SIGNIFICANCE OF IMPACT: Lessons learned by implementing our curriculum include the following: (1) students are eager to explore different areas of health care; (2) collaboration across schools, centers, departments, institutes, and offices increases our ability to identify common areas of interest; (3) implementing a diverse curriculum can be challenging due to the need for significant organization and planning; (4) the diversity of courses can be a source of confusion when there is a lack of standardization in learner expectations; (5) continued collaboration across, schools, centers, institutes programs, health professions and sections requires a significant amount of time and expertise. However, our programs demonstrate significant positive impacts both on students and at the institutional level. Our program shows that a diverse curriculum leads to a high number of students engaged in pursuing and successfully continuing a health profession education. Institutional benefits include a robust pipeline for a diverse research workforce.

OBJECTIVES/GOALS: To evaluate access to Pre-Exposure Prophylaxis (PrEP) medications for transgender individuals examining how systemic and sociocultural obstacles play a role. Additionally, analyzing the impact of trans-exclusion in clinical trials investigating PrEP efficacy on the trans-HIV care model. METHODS/STUDY POPULATION: By examining the clinicaltrials.gov database, inclusion and exclusion criteria will be collected for Phase III trials of FTC/TAF (Descovy) and FTC/TDF (Truvada) as PrEP for Human Immunodeficiency Virus (HIV). Secondly, trends of physicians’ prescription of PrEP will be analyzed to track post-approval usage and deduce the acceptance and adherence of PrEP by transgender patients. Thirdly, post-approval marketing strategies of PrEP medications will be documented to see key demographics that biopharmaceutical companies are targeting. Finally, relevant literature about trans healthcare will be analyzed to identify key short fallings to support conclusions and justify recommendations for greater transgender clinical trial enrollment and reformations to current standard practices. RESULTS/ANTICIPATED RESULTS: After a preliminary literature review of published Phase III trials for Descovy and Truvada , there is a marked lack of transgender patient enrollment. Contemporary literature argues that this lag in enrollment has downstream effects on trust and acceptance of PrEP as safe and effective by cohorts in the transgender community. The examination of prescribing information for Descovy and Truvada for PrEP reveals a minimal effort to advise doctors of the increased risk for infection in the transgender demographic. Through continued research, I expect to elaborate on the cross-discipline impacts of trans-exclusion, including increased rates of HIV infection, sociocultural and financial barriers to PrEP, and stigmatizing doctor interactions with transgender patients. DISCUSSION/SIGNIFICANCE: The current trans-HIV treatment paradigm lags behind in its sensitivity and nuance, preventing the most equitable distribution of care. Only with more inclusion of transgender individuals in clinical trials can we hope to promote greater awareness and trust for PrEP as effective for HIV.

ABSTRACT IMPACT: Rapid launch of a virtual internship can address clinical and translational science training needs of the New Jersey Alliance for Clinical and Translational Science (NJ ACTS) workforce during a pandemic. OBJECTIVES/GOALS: The global pandemic has necessitated innovate strategies for training clinical and translational scientists. With trainees largely restricted from campus, the Workforce Development Core of the NJ ACTS Hub sought to develop and evaluate a virtual 8-week internship program for professional and graduate students within the NJ ACTS community. METHODS/STUDY POPULATION: Establishment of the internship required a systematic approach to 1) recruiting projects and supervisors, 2) collecting and evaluating 90 applications, 3) screening and selecting finalists, and 4) onboarding interns that spanned 7 weeks. Core Leads and Researchers within NJ ACTS developed 8 projects to be performed remotely by 11 interns. Leads and co-leads from the Team Science, Special Populations, Community Engagement, Informatics, and TL1 Cores and Programs designed projects. During the internship, participants engaged in a series of career development training and one-on-one mentoring through weekly meetings. The internship culminated in a final symposium open to the entire clinical and translational science community. RESULTS/ANTICIPATED RESULTS: Interns spanned different educational programs - pharmacy (36%), medicine (18%), and undergrad (9%)/graduate education (36%). Interns included women (63%), students from underrepresented backgrounds (27%) and students who were first in their family to pursue advanced education (18%). Project topics included competency assessment, COVID-19 clinical trials, marketing materials, community engagement salons, eSource for clinical trials, team science projects, and REDCap utilization. Using a 4-point Likert scale to evaluate competencies, the baseline strengths of interns included team-based science (mean/SD: 3.5 ±0.7). Trainings were designed to address gaps in intern skills including developing written and graphical abstracts (mean/SD: 2.2 ±0.9) and effective LinkedIn pages (mean/SD: 2.4 ±1.0). DISCUSSION/SIGNIFICANCE OF FINDINGS: Taken together, the rapid development and launch of a virtual internship program can increase participation of trainees in CTSA Hub research activities and address gaps in their clinical and translational skill set. Plans are to host virtual internships each semester to enhance workforce training and collaboration across Hub Cores.

OBJECTIVES/GOALS: The Association for Clinical and Translational Science (ACTS) offers important inter-institutional communities through Special Interest Groups (SIGs). New to the SIG ecosystem is the Justice, Equity, Diversity, and Inclusion (JEDI) SIG. METHODS/STUDY POPULATION: Formed in 2022, the JEDI SIG is a growing community of individuals seeking to develop papers and products relating to improving health equity and workforce diversity within the Translational Science Community. Within this context, diversity is broadly defined to include groups at a negative power differential within US society. RESULTS/ANTICIPATED RESULTS: Comprised of 54 individuals spanning 29 institutions as of our first meeting in October 2022, the JEDI SIG is a welcoming group for ACTS members looking to make a difference. We have developed working groups to develop SIG-directed projects, and we look forward to expanding our activities in the future. DISCUSSION/SIGNIFICANCE: In this poster we will share key information about the new JEDI SIG including monthly meeting times, current activities, and ideas for future work.

OBJECTIVES/SPECIFIC AIMS: The primary goal of this project is to verify murine findings in the human setting. METHODS/STUDY POPULATION: The methods include primary cell isolation and culture, FACS, adoptive transfer, 3D-cell culture, histology, immunofluorescence, xenograft, and tissue recombination. The study population includes patients undergoing radical prostatectomy due to hyperplasia or adjacent bladder or prostate cancer. RESULTS/ANTICIPATED RESULTS: Having verified similar sensitivities to androgen receptor (AR) inhibitors between naive murine and human basal prostate stem cells, we anticipate that autoimmune inflammation in humans affects the response of basal prostate stem cells in a manner similar to the murine setting as well. This includes increased proliferation, differentiation, and response to AR inhibitors. DISCUSSION/SIGNIFICANCE OF IMPACT: The identification of survival mechanisms used by basal prostate stem cells in an androgen deprived environment may give insight to the process by which prostate cancer becomes androgen independent. The effect of inflammation on proliferation, survival, and AR signaling in these cells may also provide information relevant to cancer initiation and progression.

Objectives/Goals: Clinical research professional (CRP) managers often struggle to onboard effectively in the rapid timelines necessary. We developed a competency-based, standardized, onboarding program using a 3-factor adult learning approach and designed to be easily adaptable, broadly shared, and readily implemented across a variety of research environments. Methods/Study Population: The Duke competency-based onboarding program for CRPs was developed through an iterative process with input from research community members. Initially, 97 courses were mapped to clinical research competencies using the Joint Taskforce for Clinical Trial Competency framework to identify training gaps and establish a structured learning framework. The onboarding program includes three key components: role specific Express Start modules (self-paced e-learning), Onboarding Learning Plans (a customizable timeline for competency-mapped trainings), and Engagement Activity Packets (guides for manager-driven applied learning in specific competency areas). An additional cohort-based mentorship program (RPN+) includes 4 months of mentored group learning and seminars designed for new professionals. Results/Anticipated Results: Since launch in 2021, 521 new employees have registered an Onboarding Learning Plan representing more than 55% of new CRPs. Additionally, nearly 85% of new CRPs have completed the Express Start role-specific online modules. 54% of new CRPs have enrolled in RPN+ (launched in 2022) and have included members from 22 of 24 clinical research units. Users have reflected the range of clinical research staff roles at Duke, with the majority being clinical research coordinators. A significant predominance of participants found the programs beneficial and would recommend to others. Since launch, program materials have been shared with 64 external groups and institutions via 91 requests. Discussion/Significance of Impact: Duke’s CRP onboarding program addresses organizational, technical, and social aspects through Express Start, Onboarding Learning Plans, and the RPN+ mentoring program. Aligned with the JTFCTC framework, and designed for broad implementation, it successfully promotes competency-based growth and optimizes time for both managers and employees.

OBJECTIVES/SPECIFIC AIMS: Women with pulmonary arterial hypertension (PAH) exhibit superior right ventricular (RV) function and survival compared with men, a phenomenon attributed to poorly understood cardioprotective effects of 17β-estradiol (E2). We hypothesize that E2, through ERα, attenuates PH-induced RV dysfunction by upregulating the pro-contractile and pro-angiogenic peptide apelin. This ERα-mediated increase in apelin is mediated by the myocardial remodeling effector bone morphogenetic protein receptor 2 (BMPR2). METHODS/STUDY POPULATION: ERα, BMPR2, and apelin were measured (western blot) in RVs from patients with PAH-induced RV failure and in RV homogenates from male or female Sprague-Dawley rats with sugen/hypoxia (SuHx) or monocrotaline (MCT)-induced PH. H9c2 rat cardiomyoblasts and cardiac endothelial cells were stressed with TNF-α (10 ng/mL) or staurosporine (50 nM)±E2 (100 nM; 24 h). ERα-, BMPR2-, and apelin-dependence were evaluated by siRNA (5 pM). Downstream apelin target and pro-survival factor ERK1/2 expression was measured (western blot). p<0.05 by ANOVA was considered significant. RESULTS/ANTICIPATED RESULTS: ERα correlated positively with BMPR2 and apelin expression in SuHx-RVs and human RVs. Treatment of SuHx-PH rats with E2 or ERα agonist increased RV BMPR2 and apelin, whereas RV apelin was decreased in E2-treated hypoxic ERα knockout mice (p<0.05), but not in ERβ knockout mice. In H9c2 cells, E2 or ERα agonist attenuated TNF-α- or staurosporine-induced decreases in BMPR2, apelin, and phospho-ERK1/2 (p<0.05 for all endpoints). E2 protection was lost in presence of siRNA directed against ERα, BMPR2, or apelin (p<0.05). ERα was necessary for E2-mediated increases in BMPR2, apelin, and ERK1/2, and BMPR2 was required for the E2-mediated increase in apelin (p<0.05 for siRNA vs. scramble). ERα, BMPR2, and apelin protein was increased in decompensated human RVs but downstream phospho-ERK signaling was disrupted. DISCUSSION/SIGNIFICANCE OF IMPACT: E2, via ERα, increases BMPR2 and apelin in the failing RV and in stressed rat cardiomyoblasts. The E2-mediated increase in apelin is BMPR2-dependent and likely occurs through direct binding of ERα to the BMPR2 promoter. Harnessing this E2-ERα-BMPR2-apelin axis during RV compensation may lead to novel, RV-targeted therapies for PAH patients of either sex.

OBJECTIVES/SPECIFIC AIMS: To determine if an educational intervention designed to increase respiratory therapists’ knowledge of the modified early warning score (MEWS) would influence their intention to use the MEWS. METHODS/STUDY POPULATION: A web-based self-administered survey based on the constructs of the TAM as well as awareness, attitude, and job-relevance was developed and validated using traditional scale development process and distributed to 75 respiratory therapists (RTs) from the respiratory care department of Rush University Medical Center. RTs were recruited for participation in the study using consecutive sampling. The RTs were then given a training session on the MEWS after which they were again asked to complete the survey. RESULTS/ANTICIPATED RESULTS: The response rate to both the pre and post survey was 60 percent. Of the 46 participants recruited to the study, the educational intervention elicited an increase in the MEWS knowledge score in 45 participants compared with the knowledge score prior to the educational intervention. Additionally, there was an increase in the behavioral intention score post intervention in 30 participants compared with the behavioral intention score before the educational intervention. A Wilcoxon signed-rank test determined that there was a statistically significant median increase in MEWS knowledge score (2.0) post educational intervention (4.0) compared with pre-educational intervention (2.0), p<0.0005. There was also a statistically significant median increase in behavioral intention score (0.667) pre-educational intervention (4.0) compared with posteducational intervention (3.0), p<0.0005. DISCUSSION/SIGNIFICANCE OF IMPACT: Numerous studies over the last 4 decades have demonstrated that change in behavioral intention is a good predictor of change in behavior. Consequently, the increase in the respiratory therapists’ behavioral intention score post MEWS education suggests that they may be more inclined to incorporate the MEWS score in their assessment of patients if they are educated about its clinical relevance. Additionally, the study results verified key postulates of the TAM, suggesting that the TAM is an appropriate model for assessing respiratory therapists’ perception and reaction to new systems, and may also help respiratory care managers develop new mechanisms that facilitate respiratory therapists’ adoption of new systems and processes.

OBJECTIVES/GOALS: Few preclinical models exist to study how tumors transition from prolonged stable disease ('equilibrium') to progressive disease ('escape'). We characterized a new murine tumor model the exhibits such behavior, and sought to identify and validate the role of unique tumor-infiltrating immune cell subsets in this process. METHODS/STUDY POPULATION: We evaluated growth of NPK-C1 (originally LM7304; received from Dr. Cory Abate-Shen at Columbia University), a cell line developed from spontaneous prostate cancer lung metastases in NPK mice (Nkx3.1CreERT2/+Ptenflox/floxKrasLSL-G12D/+R26R-LSL-YFP/+), in immune competent (C57BL/6) and immune deficient mice (J/Nu). We determined the role of CD4 and CD8 T cells in regulating the 'equilibrium to escape’ growth dynamics of NPK-C1 via in vivo cell depletions at key inflection points of tumor growth. To deeply profile the immune contexture of NPK-C1 at these inflection points, we developed a 28-color immunophenotyping panel for use on a Cytek Aurora spectral flow cytometer. We performed dimensionality reduction and clustering analyses on these data using tSNE and FlowSOM algorithms within FlowJo (v10.6). RESULTS/ANTICIPATED RESULTS: We found that activated CD4 effector T cells are enriched in regressing NPK-C1 tumors, highlighting a role for CD4 T cells in antitumor immunity. CD8 T cells are also important for NPK-C1 control; specifically central memory-like cytotoxic CD8 T cells. Depletion of either CD4 or CD8 T cells during the equilibrium phase of NPK-C1 growth confirmed the role of these cells in antagonizing NPK-C1 escape. Tregs as a whole were counterintuitively enriched in regressing tumors, however high dimensional analysis reveals their significant phenotypic diversity, with a number of Treg subpopulations enriched in progressing tumors. In the myeloid compartment, we found that iNOS+ DC-like cells are enriched in regressing tumors, while CD103+ DCs are associated with late stage tumor progression. DISCUSSION/SIGNIFICANCE: In total, these analyses of the NPK-C1 model provide novel insights into the roles of lymphoid and myeloid populations throughout key phases of tumor/immune co-evolution, and highlight a role for multi-dimensional flow cytometry-based analyses to more deeply understand immune cell dynamics in the tumor microenvironment.

ABSTRACT IMPACT: NJ ACTS provides mentored coaching in NIH grant writing for early stage investigators. OBJECTIVES/GOALS: Launching an independent academic careers requires the ability to effectively communicate the purpose and impact of biomedical research in order to obtain extramural funding. We sought to develop and evaluate an interactive grant writing group of junior faculty and senior postdoctoral fellows mentored by trained coaches. METHODS/STUDY POPULATION: Participants meet monthly for 1 hour to peer review Specific Aims pages for grant applications to NIH and private foundations. Sessions are moderated by two senior faculty trained as coaches by the National Research Mentoring Network. Participant grant submission and review of the program are collected annually. RESULTS/ANTICIPATED RESULTS: From 2019-2020, 15 faculty and 2 postdoctoral fellows participated in the grant writing group with an average of 5.7 participants each month. Over the year, participants submitted 53 grant applications (68% submitted to NIH with the majority being R21 or R01 grant mechanisms). Half of grants submitted were discussed during peer review sessions. Of the grants reviewed, 42% were funded or near/below the funding payline. Using a 5-point Likert scale, participants highly rated the quality of coaching (mean/SD: 4.9 ±0.2), time discussing their research (mean/SD: 4.5 ±0.8), and the input from other participants (mean/SD: 4.5 ±0.5). DISCUSSION/SIGNIFICANCE OF FINDINGS: In conclusion, a monthly meeting of junior investigators hosted by two grant writing coaches is an effective means to receive peer review of grant application aims and support submissions for extramural funding.

OBJECTIVES/GOALS: This study aims to assess associations over time between several area-based indices of concentration at the extremes and COVID-19 hospitalization and death in Los Angeles County, from January 2020 to June 2023. These measures reflect concentrations of racial/ethnic and economic segregation at the census tract level. METHODS/STUDY POPULATION: Indices of concentration at the extremes (ICEs) for economic segregation, racial/ethnic segregation, and a combination of the two were constructed for each Los Angeles County (LAC) census tract, using 2015-2019 ACS data. The index ranges from -1 to 1 and is the number of advantaged households (HH) minus the number of disadvantaged HH over the total number of HH measured. Economic segregation is HH income over $100,000 vs. below $25,000 per year and racial/ethnic segregation defined as White and Non-Hispanic vs. non-White or Hispanic HH. The distribution of index scores was divided into quintiles (Q1-Q5) for all LAC census tracts. Age-adjusted hospitalization and death rates were derived at the census tract level by quarter (QTR) based on Los Angeles County Department of Public Health surveillance data. RESULTS/ANTICIPATED RESULTS: Age-adjusted hospitalization and death rates were consistently higher across all quarters in Q1 (most deprived) vs. Q5 (most privileged) for all ICE measures. For ICE of economic segregation, the age-adjusted hospitalization and death rate ratios between Q1 and Q5 were 2.12 (range: 1.32 - 4.15; peak 2020 QTR2) and 2.02 (range: 1.46 - 3.21; peak 2021 QTR1), respectively. For ICE of racial segregation, the age-adjusted hospitalization and death rate ratio between Q1 and Q5 was 2.03 (range: 1.08 - 3.95; peak 2020 QTR3) and 1.77 (range: 1.03 - 2.80; peak 2021 QTR1). The ICE of economic/racial segregation combined was the highest, with averages of the age-adjusted hospitalization and death rate ratios between Q1 and Q5 being 2.26 (1.16 - 4.43; peak 2020 QTR2) and 1.99 (range: 1.22 - 3.32; peak 2021 QTR1). DISCUSSION/SIGNIFICANCE: This study assesses the impact of geographic segregation based on indices that quantify the concentration of both deprivation, privilege, and racial/ethnic group, demonstrating that segregation and economic deprivation are consistently associated with higher rates of age-adjusted hospitalization and death from COVID-19 in LAC.

OBJECTIVES/GOALS: The goal of this project was to develop and evaluate a pilot mentor training program for clinical research professionals. This project presents an evidence- and theory-based mentoring program that has been developed, implemented, and evaluated for this group of translational research professions. METHODS/STUDY POPULATION: The curriculum for the program was designed for aspiring mentors and aligned with the topics of existing Entering Mentoring curriculum for translational workforce (Pfund, Branchaw & Handelsman, 2015). Eleven experienced CRPs participated in the pilot training program. The training was delivered in two-hour meetings over eight weeks. Qualitative e-mail interviews and a validated mentoring competency assessment (Fleming et al., 2013) and mentor role assessment (Dilmore, 2010) tool were used for process and outcome evaluation. Cases studies specific to the CRPs work environment were developed and used to facilitate discussions throughout the training. RESULTS/ANTICIPATED RESULTS: Pre- and post-training scores for mentoring competency assessment were compared across six sub-indexes. Paired t-tests showed a significant difference for the maintaining effective communication competency, p = 0.0202. Comparisons of individual items also showed positive changes in the promoting professional development competency, p = 0.0161). Qualitative assessment revealed that most mentor trainees recognized a distinction between a mentor and a supervisor or on-the-job-trainer. Furthermore, most have been informal mentors without a formal role assignment, the need for ongoing mentoring, and potential of mentoring networks. DISCUSSION/SIGNIFICANCE OF IMPACT: CRPs is a diverse group of research support professionals who may hold the roles of research study coordinators, research nurses, regulatory and compliance specialists. Tailored mentoring can provide essential infrastructure for ongoing professional development and support talent retention.

OBJECTIVES/SPECIFIC AIMS: To create prevention strategies targeting ARA and CDA, it is critical to educate and mold adolescent recognition, behavioral intentions, and attitudes regarding healthy dating relationships. Thus, the purpose of this study was to examine if high school students’ recognition of ARA, the students’ behavioral intentional to intervene during ARA episode of someone they know, and the students’ attitudes about the importance of healthy relationship serve as a protective factors against experiencing ARA. Aim 1: Do baseline (T1) recognition, behavioral intentions, and attitudes serve as protective factors against experiencing ARA in high school students at 3-month follow-up (T2)? Aim 2: Do baseline (T1) recognition, behavioral intentions, and attitudes serve as protective factors against CDA in high school students at 3-month follow- up (T2)? METHODS/STUDY POPULATION: To examine the relationships between recognition, behavioral intentions, and attitudes of ARA and CDA, a secondary analysis using a descriptive correlational design was used to analyze electronic survey data from a large randomized controlled parent study. The parent study consisted of 1,011 high school students ages 14 to 19 years who sought health service through one of eight school-based health clinics in California. This secondary analysis consisted of 819 students, with 640 (78.1%) female, 178 (21.7%) males, and 1 (0.2%) transgender participant. There were 42 (5.1%) Caucasians, 141 (17.2%) Asians, 218 (26.7%) African Americans, 313 (38.2%) Hispanics, 42 (5.1%) American Indians/Alaskan Natives, and 63 (7.7%) students who responded multi-racial. To measure recognition of ARA, a 10-item, 5-point Likert scale was used with responses ranging from 1=“not abusive” to 5=“extremely abusive” (Cronbach’s a = 0.85). To assess behavioral intentions to intervene, a 5-item, 5-point Likert scale was used to ask participants how likely they would be to stop the ARA behavior if they witness a peer perpetrating ARA with responses ranging from 1=“very unlikely” to 5=“very likely” (Cronbach’s a = 0.89). A 6-item, 3-point Likert healthy relationship tool measured participants’ attitudes regarding healthy relationship with responses ranging from 1=“not important” to 3=“very important”. Both ARA and CDA were assessed using a “yes/no” response choice for the lastthree months. To account for the hierarchical nature of the data analysis, a binary logistic regression was used in SPSS 24. To take into account the clustering coefficients of the eight different school clinics and as well as the parent study’s intervention and control groups, these clusters were examined as co-variates. Sex, race, and age were included as covariates, also. RESULTS/ANTICIPATED RESULTS: The relationship status of high school students consisted of 262 (32.0%) who were single, 97 (11.8%) who were going out, dating, or hooking up with more than one person, 423 (51.7%) who were seriously dating one person, and 37 (4.5%) who were not sure. At 3-month follow-up assessment, 111 (13.6%) of high school students experienced ARA, and 476 (58.1%) experienced CDA. The mean recognition of ARA score was 3.90 + 0.67, mean behavioral intentions score was 4.00 + 0.83, and mean attitudes score was 2.54 + 0.37. When examining the full ARA model including all three predicators controlling for the demographics and group assignment, none of the predictor variables were significant (p>0.05) in predicting ARA in high school students. Also, all three predictors were not significant in predicting ARA in the main effects model. When examining the full CDA model, with no interaction, all three predictors were significant. Recognition had 0.784 decrease odds (95% CI = 0633-0.971, p = 0.026) of predicting CDA. However the odds of CDA increase non-linearly up to the mean (2.537709) for the attitudes variable after which the odds then decreases non-linearly. The odds of CDA is increasing non-linearly up to 3.073913 for the behavioral intention variable after which the odds then decrease non-linearly. DISCUSSION/SIGNIFICANCE OF IMPACT: Adolescence is typically a time of exploration, transition, and social development. Researchers should investigate the efficacy of ARA and CDA prevention programs that focus on recognition, behavioral intentions, and attitudes to educate adolescents on healthy relationships. Results showed that behavioral intention to intervene and attitudes about healthy relationship can serve as protective factors against CDA. From our data, more students experienced CDA compared to ARA. Thus, it may by useful to recognize the use of technology as a social force within the adolescent culture in defining adolescents’ experiences of healthy relationships and potential experience of CDA.

OBJECTIVES/SPECIFIC AIMS: According to the US census, there are 3.3 million Americans who have to use wheelchairs in order to maintain their mobility. About 50% of these patients develop a pressure ulcer at some point during their life time. Three major factors contribute to pressure ulceration; pressure, tissue temperature, and maceration due to sweating. The objective of this study is to develop a temperature regulating wheelchair cushion in order to address elevated tissue temperatures and related sweating. METHODS/STUDY POPULATION: We instrumented a wheelchair with cooling elements, a water filled cushion and a pump. The pump moves the water through the cooling elements where water temperature drops down to 15°C. The water then moves to the cushion where it cools the tissue and then back to the cooling elements. RESULTS/ANTICIPATED RESULTS: We recruited 1 healthy subject to sit on the instrumented wheelchair and then obtained thermographs of the cushion surface using an infrared thermal camera. After 1 minute of sitting on the cushion the minimum temperature was recorded as 27°C. After 10 minutes the temperature dropped to 23.3°C. DISCUSSION/SIGNIFICANCE OF IMPACT: In this ongoing proof-of-concept study we are investigating if circulating chilled water inside a wheelchair cushion is a feasible method to regulate tissue temperatures at the 25–28°C range. This range has been shown to delay ulceration under loading conditions that simulate sitting on a wheelchair. Initial results indicate that this may be an effective ulcer prevention method.

OBJECTIVES/SPECIFIC AIMS: Trichuris trichiura, is a leading cause of chronic colitis worldwide, resulting in growth stunting, anemia, and cognitive deficits, predominately in children. Our long-term goal is to develop a vaccine against T. trichiura. Both T. trichiura and the closely related Trichuris muris release excretory/secretory (ES) macromolecules from the stichosome organ, which facilitates intracellular invasion into the cecum. We exploited the high degree of genetic sequence homology between T. trichiura and T. muris to evaluate T. muris stichosome proteins as vaccine candidates. METHODS/STUDY POPULATION: Through immunological screening of the T. muris stichosome cDNA library and T. muris ES macromolecules generated in culture, we identified, cloned, and expressed several vaccine candidates. In ranking these antigens, we selected the most promising recombinant proteins, WAP and CAP-1, and vaccinated AKR mice to evaluate the immunogenicity and efficacy of our candidate. In addition, we collected 240 serum samples in the T. trichiura endemic region of Honduras to measure the recognition of WAP and CAP-1 in naturally infected human. RESULTS/ANTICIPATED RESULTS: We measured a statistically significant reduction in larval worm burden in WAP and ES vaccinated mice, but not CAP-1, by microscopy and real-time PCR of T. muris DNA. We found a significant relationship between antigen-specific IgG1:IgG2a ratio in the mouse serum and degree of protection. Mouse splenocytes, vaccine-sensitized draining lymph nodes, and mesenteric lymph nodes were antigen-stimulated and their secreted Th1, Th2, and Th17 cytokines were measured by Luminex®. Stimulated mouse lymphoid cells were further analysed for T helper, T cytotoxic, and central/effector memory T cells by Flow Cytometry. Human IgG1, IgG2, and IgE antibody titers against WAP and CAP-1 were measured by ELISA. DISCUSSION/SIGNIFICANCE OF IMPACT: In our study, we describe the T cell dependent mechanism of humoral immunity of 2 promising ES-derived vaccines recombinant proteins, WAP and CAP-1. We evaluated the immune response, indicating a driving a Th2-induced humoral response necessary for protection. We further predict protection and allergenicity of WAP in humans using serum from a cohort in an T. trichiura endemic region.

Objectives/Goals: This poster describes the scientific rationale, needs assessment, programmatic elements, and impact of a community of practice (CoP) focusing on advancing equity in the science and practice of mentorship. Methods/Study Population: In 2023, the University of Wisconsin Institute for Clinical and Translational Research received NIH R13 funding to host a conference, the Science of Effective Mentorship (Asquith, McDaniels, et.al., 2023). Approximately 150 researchers and program leaders from Clinical and Translational Science Awards (CTSA) Hubs and beyond attended. Data were collected before, during, and after the conference, providing the authors with an initial idea of community needs. As a result, a mentorship CoP was formed. In the subsequent 18 months, a steering and advisory committee established a program of virtual, topic-focused virtual events every 3 months as well as a community website, with increasing attendance and utilization. A survey was disseminated after the completion of one year, and a focus group was held during the last virtual gathering. Results/Anticipated Results: The demand for infrastructure to support a national community of practice will be demonstrated. The demographic and positional diversity (e.g. role within a CTSA Hub) will highlight the opportunities of convening this diverse community. Organizational challenges and opportunities will be highlighted. Assessment data will reveal the broad range of needs and interests of participants. Aggregate demographic, professional, and participation data about community of practice members will be shared, as well as the governance and programmatic elements of this community of practice. Evaluation results from the first year of activity will be displayed. Needs for sustainability will be discussed. Discussion/Significance of Impact: CoPs are not new in the CTR space. Membership in a CoP may reduce isolation individuals feel as they negotiate the important work of equity in the biomedical workforce. Members of this community of practice share the expertise and commitment to promoting equity in the biomedical workforce through supporting robust culture of mentorship.

OBJECTIVES/GOALS: This study aims to determine 1) which urine biomarkers of kidney health measured in the ambulatory setting predict incident hospitalization; 2) to determine whether time-updated measures of ambulatory urine biomarkers and their changes/trajectories have added value over baseline alone. METHODS/STUDY POPULATION: Participants in the Predictors of Acute Renal Injury Study (PARIS), a prospective cohort of 478 HIV+ patients followed at the Johns Hopkins HIV Clinic, had sociodemographic, clinical data, and biosamples taken until hospitalization or up to 3 years annually. Among those hospitalized, clinical data and biosamples were collected serially during hospitalization and at 3 and 12 months post-discharge. For each of the 10 biomarkers measured, we will evaluate the association of the biomarker and risk of incident hospitalization using Cox hazards regression, adjusting for sociodemographics, comorbidities, HIV history, and medications. Biomarkers will be evaluated at baseline and as time-updated and change over time. RESULTS/ANTICIPATED RESULTS: We anticipate that higher baseline levels and increasing levels of urine albumin, α1M, β2M, NGAL, IL-18, KIM-1, MCP-1, YKL-40 will be independently associated with increased risk of incident hospitalization whereas higher and increasing levels of uromodulin and EGF will be associated with lower risk of incident hospitalization. These biomarkers collectively capture the following dimensions of kidney health: endothelial injury, tubular injury and function, inflammation, and fibrosis. We anticipate increased risk of incident hospitalization in HIV+ persons in the highest tertile of baseline, time-updated, and change over time biomarkers, relative to those within the lowest tertile. DISCUSSION/SIGNIFICANCE: This study will improve our understanding of the evolution of biomarkers of kidney health from the ambulatory to the hospitalized setting and will quantify the clinical implications of subclinical kidney damage among people living with HIV, a high-risk patient population with unique kidney pathophysiology.