People experiencing incarceration are often invisible to the public due to the restricted settings in which they reside and receive services. Limited access to criminal justice settings leaves policymakers and healthcare professionals with sparse information to understand the unique needs of this population. The unmet needs of justice-involved individuals are more likely observed by professionals who provide services in correctional settings. We provide three distinct examples of projects conducted within correctional settings and how they formed pathways to interdisciplinary research and community partnerships to address the unique health and social needs of incarcerated individuals. Our partnerships in a variety of correctional settings led to exploratory research of women and men’s prepregnancy health needs, participatory workplace health interventions, and process evaluation of reentry programming. The limitations and challenges to research in correctional settings are considered along with the clinical and policy implications of these projects.

Despite federal regulations mandating the inclusion of underrepresented groups in research, recruiting diverse participants remains challenging. Identifying and implementing solutions to recruitment barriers in real time might increase the participation of underrepresented groups. Hence, the present study created a comprehensive dashboard of barriers to research participation. Barriers to participation were recorded in real time for prospective participants. Overall, 230 prospective participants expressed interest in the study but were unable to join due to one or more barriers. Awareness of the most common obstacles to research in real time will give researchers valuable data to meaningfully modify recruitment methods.

OBJECTIVES/SPECIFIC AIMS: Our goal is to assess age-related changes in osteogenic stem cell populations of bone tissue. We hypothesize that aging mice have reduced osteogenic capacity in response to physical stimulation due to aging-associated decline in osteoprogenitor cell number and their proliferative capacity. METHODS/STUDY POPULATION: Mechanical loading: The NYU School of Medicine Institutional Animal Care and Use Committee approved all procedures. The response of tibial periosteal cells to physical stimulation or mechanical loading was assessed in 16-week-old adult (n=6) and aged 78-week-old female (n=4) mice subjected to 4 consecutive days of strain-matched axial compressive loading (1400 μm, 120 cycles, 2 Hz). Whole Mount Staining: Baseline periosteal cell numbers and nuclear morphology were assessed by whole bone DAPI staining of the antero-medial region of the tibiae in adult and aged mice (n=6). Immunohistochemistry: Tibiae were fixed in 4% PFA, decalcified in 19% EDTA, OCT-embedded, and thickly sectioned (150 μm) at midshaft. Sca1+, Prrx1+, and Ki67+cell numbers were quantified by simultaneous fluorescent immunohistochemical staining from loaded and nonloaded contralateral tibiae. Nonimmune species specific serum served as negative controls. Imaging: 3D image datasets of the periosteum at the antero-medial region of the tibial midshaft were acquired by multi-photon and confocal microscopy. Quantification of Sca1+, Prrx1+, and Ki67+ cells was carried out using Particle Analysis software (ImageJ) and Imaris 7.4.2 Surface Rendering Statistics functions. Cell number was normalized to periosteal area (~0.04 mm2). A Student t-test determined significance at p<0.05. RESULTS/ANTICIPATED RESULTS: At baseline, aged periosteal cell nuclei (DAPI+) area (14% decrease, p<0.0001), nuclei number, and Prrx1+ cell number (22% decrease) was significantly lower compared with adult mice. In loaded adult mice, Prrx1+but not Sca1+cell number increased significantly (35%, p=0.0115). Proliferating Sca1+(top panel) and Prrx1+(top panel) cells also increased with loading, 62%, p=0.0253 and 115%, p=0.0004, respectively, in adult but not aged mice. The percentage of Prrx1+ cells undergoing proliferation (co-expressing Ki67+) in the total Prrx1+ cell population increased significantly with loading (bottom panel). Aged mice did not exhibit significant differences in loaded versus nonloaded controls for all other outcomes. Our data suggest fundamental changes in periosteal cell morphology, number and response to mechanical loading with aging. The significant increase in total Prrx1+ cell number and the number of Prrx1+ cells undergoing proliferation with loading in adult mice, suggest that the Prrx1+ cell population expands through proliferation. In fact, loading resulted in a 2-fold increase in the percentage of Prrx1+ preosteogenic cells undergoing proliferation. Accordingly, the significant age-related decrease in Prrx1+ cells may explain, in part, the attenuation of load-induced bone formation in aged mice. Loading resulted in greater numbers of proliferating Sca1+ cells (the more primitive cell) in adult mice, though this represented only a small percentage (<10%) of the total Sca1+ population. Mechanical loading expands the Prrx1+ pre-osteogenic cell population, but not the more primitive Sca1+ population. However, this load-induced osteogenic effect in the periosteum is not observed in aged mice, which may explain age-related diminishment of load-induced bone formation. DISCUSSION/SIGNIFICANCE OF IMPACT: Mechanical loading presents an inexpensive treatment for increasing bone mass and bone strength, but may be insufficient to prevent or reverse age-related bone loss due to reduced numbers of osteogenic progenitors in the periosteum. Therapeutic approaches targeting the osteogenic capacity of periosteal cells will be required to address declining mechanoresponsiveness with age.

OBJECTIVES/SPECIFIC AIMS: Alcohol craving, particularly in response to stress and alcohol cues, can lead to relapse in alcohol-dependent individuals. Hypothalamus-pituitary-adrenal (HPA) axis markers such as the cortisol to corticotrophin (CORT:ACTH) ratio have been shown to be a significant predictor of alcohol relapse. Our objective was to evaluate the influence of HPA-axis measures on intravenous alcohol self-administration (IV-ASA) in binge and nonbinge drinkers. METHODS/STUDY POPULATION: Healthy, non-dependent binge drinkers (n=14) and nonbinge drinkers (n=11) participated in this study. They underwent 3 personalized imagery sessions, where they heard 5-minute personalized audio scripts designed to trigger stress, alcohol craving, and neutral-relaxation states. Immediately following these cues, participants were given access to alcohol using a novel IV-ASA paradigm for 120 minutes. Serial blood samples were collected for cortisol and ACTH levels. Subjective measures were collected serially using the Subjective Units of Distress Scale (SUDS), Drug Effects Questionnaire (DEQ), and Alcohol Urge Questionnaire (AUQ). Analyses were conducted using linear regression. RESULTS/ANTICIPATED RESULTS: Results showed that peak and average ACTH levels as well as the CORT:ACTH ratio during the early phase of the IV-ASA session following the stress and alcohol cues were significantly higher than the neutral script; this effect was seen primarily in binge drinkers. After script administration, a greater change from baseline for ACTH predicted time to peak BrAC during IV-ASA. Gender and binge group predicted AUQ MAX (peak alcohol craving over the entire study session) and WANT MAX (peak “want more alcohol” scores over the session). There was a significant correlation between IV-ASA and increased ACTH peak and average values in binge drinkers. The DEQ and AUQ measures were positively correlated with ACTH peak and ACTH change from baseline. DISCUSSION/SIGNIFICANCE OF IMPACT: These findings, to our knowledge, are the first demonstration that exposure to both stress and alcohol cues lead to an increase in ACTH during cue-induced IV-ASA, particularly in binge drinkers. These results suggest that changes in HPA-axis reactivity following stress and alcohol may be important determinants of alcohol consumption in non-dependent binge drinkers.

OBJECTIVES/GOALS: Clinical Issue/ Practice Problem: A high turnover rate for research nurses was identified between 2017-2022 in the clinical research center at an urban Midwest academic health center. Inexperienced staff and high turnover are barriers to maintaining high-quality research integrity, efficacy, and safety for research projects and participants. METHODS/STUDY POPULATION: Project Implementation: A formal mentorship program was developed based on a curriculum from the International Association of Clinical Research Nursing Scope and Standards of Practice. The six-week project was implemented for research nurses with less than 2 years of experience. Mentees were paired with senior research nurses and met one-on-one weekly. Mentees completed the Anticipated Turnover Scale (ATS) survey in week 1 and week 6. All program participants completed a final evaluation survey. RESULTS/ANTICIPATED RESULTS: Outcomes: There was a one-point average reduction in pre- and post-ATS survey scores. This result supports the theory that mentees were less likely to leave their research role after a formal mentorship program. Qualitative results from the final evaluation survey demonstrate the program had a positive impact and benefits for both the mentees and the mentors. DISCUSSION/SIGNIFICANCE: Clinical Implications: By decreasing turnover rates, a highly competent and knowledgeable research nursing staff is attained to ensure appropriate nursing action and safety profiles for novel therapies.

OBJECTIVES/SPECIFIC AIMS: Clostridium difficile is the most common cause of infectious antibiotic associated diarrhea. It is often refractory to antimicrobial therapy and fecal microbiota transplantation (FMT) is emerging as a therapeutic option. The objective is to characterize the direct effects of FMT on the gut microbiota. METHODS/STUDY POPULATION: Fecal specimens were obtained from a cohort of 29 subjects with recurrent C. difficile infection who received FMTs from 1 of 4 healthy donors as part of a phase 2 trial (Rebiotix). Fecal specimens were collected from the subject before FMT and up to 6 months post FMT. 16S rRNA sequencing and whole-genome shotgun sequencing were used to assess microbial community composition as compared by weighted Unifrac. RESULTS/ANTICIPATED RESULTS: Before treatment, the microbial community of subjects with C. difficile infection was highly distinct from the composition of the healthy donors in terms of metabolic profile. Quantification of phylogenetic community distance from donor by weighted Unifrac distance showed a significant decrease within the 1st week (Wilcoxon rank sum, p<0.01). This metric was predictive of both treatment failures and antibiotic resistance gene count (LR=22.45, p<0.0001). DISCUSSION/SIGNIFICANCE OF IMPACT: We conclude that distance from donor is a useful metric to quantify FMT success and that FMTs are a promising treatment for otherwise untreatable carriage of antibiotic resistance genes and organisms.

OBJECTIVES/SPECIFIC AIMS: Background: Renal transplantation (tx) is the optimal treatment for end-stage renal disease (ESRD) in children, but post-tx urinary tract infections (UTIs) may cause morbidity and reduce allograft survival. Objectives: To quantify the number and risk factors for UTIs in pediatric kidney tx recipients in preparation for an analysis of the morbidity and impact of UTIs on allograft survival. METHODS/STUDY POPULATION: Methods: We identified all patients who underwent kidney tx between 2001 and 2016 (n=390) at Children’s Healthcare of Atlanta (CHOA). Patients were included if they had >1 year of follow-up at CHOA. We conducted an IRB-approved, retrospective review of patient demographics, medical history, and tx outcomes in the 5 years following tx. RESULTS/ANTICIPATED RESULTS: Results: Of the 205 records reviewed to date, we identified 176 eligible patients (61.9% male). Mean age at tx was 11.7±5.5 years. In total, 58.5% had a deceased and 41.5% had a living kidney donor. Obstructive uropathy was the etiology of ESRD in 21.0%. Mean UTIs in all patients was 1.1/patient±2.7. On preliminary analysis, patients with a history of obstructive uropathy were more likely to develop a UTI than patients without (45.9% vs. 25.2%, p=0.014). There is a trend to more UTIs in patients with a history of obstructive uropathy compared with patients without (2.1±3.5 vs. 0.9±2.4, p=0.055). In males, there were more UTIs in patients with a history of obstructive uropathy compared to patients without (1.7±2.9 vs. 0.5±1.5, p=0.024). In all, 23.2% of all patients were on UTI prophylaxis post-tx; trimethoprim-sulfamethoxazole was the prophylactic antibiotic in 54.5%. DISCUSSION/SIGNIFICANCE OF IMPACT: Conclusions: UTIs are common post kidney tx in children, especially in those with a history of obstructive uropathy. The associated morbidity and impact on graft survival are unknown.

Objectives/Goals: Understanding systematic review results help prioritise more valuable studies. However, evaluating whether a systematic review has conclusively answered a question is difficult, and it is unclear which tools are available for such assessments. Thus, we mapped the extent of methods for determining the conclusiveness of systematic review results. Methods/Study Population: We searched Medline (Ovid), EMBASE (Ovid), and Web of Science to find papers with methods to determine whether systematic review results were conclusive or should be updated. The characteristics of primary references for included methods are presented. We classified and summarized available methods. Results/Anticipated Results: A total of 58 unique methods were identified. Many have been published since 2010 and often did not include a worked example. We found 25 mathematical methods for the conclusiveness of meta-analyses, which included cumulative meta-analysis, fail-safe number, fragility index, prediction and machine learning model, simulation-based power, conditional power, and graphical approaches. There were 15 methods for the conclusiveness of cumulative meta-analyses, such as quality control approach, trial sequential analysis, sequential meta-analysis, and law of iterated logarithm. And, 18 methods assessed the conclusiveness of systematic reviews: GRADE framework, the strength of a body of evidence approach, methods for assessing the need to update a systematic review, and methods for specific clinical domains. Discussion/Significance of Impact: We found a wide range of methods that can be used to determine the conclusiveness of systematic review results. End-users of systematic reviews can review our results to find the most appropriate methods for their contexts and decisions.

OBJECTIVES/GOALS: The goal of this study was to perform a comparative, multi-reader, retrospective clinical evaluation of prostate multiparametric MRI (mpMRI) at 3 Tesla (3T) vs. 7 Tesla (7T) primarily in terms of prostate cancer localization. Subjective measures of image quality and artifacts were also evaluated. METHODS/STUDY POPULATION: Nineteen subjects were imaged at 3T and 7T between March 2016 and October 2018 under IRB-approved protocols. Four radiologists retrospectively and independently reviewed the data, and completed a two-part assessment for each dataset. First, readers assessed likelihood of cancer using Prostate Imaging Reporting & Data System (PI-RADS) guidelines. Accuracy of cancer detection was compared to findings from prostate biopsy. The numbers of correctly or incorrectly classified sextants were summed across all four readers, then used to summarize detection performance. Second, readers assigned a score on a five-point Likert scale to multiple image quality characteristics for the 3T and 7T datasets. RESULTS/ANTICIPATED RESULTS: Sensitivity and specificity of 3T and 7T datasets for sextant-wise cancer detection were compared by paired two-tailed t-tests. Readers identified more sextants harboring cancer with the 3T datasets while false-positive rates were similar, resulting in significantly higher sensitivity at 3T with no significant differences in specificity. Likert scores for image quality characteristics for 3T and 7T datasets were compared by applying paired two-tailed t-tests to mean scores of the four radiologists for each dataset. Readers generally preferred the 3T datasets, in particular for staging and assessment of extraprostatic extension as well as overall quality of the contrast-enhanced data. DISCUSSION/SIGNIFICANCE OF IMPACT: Readers agreed 7T prostate mpMRI produced images with more anatomic detail, though with equivocal clinical relevance and more pronounced artifacts. Reader unfamiliarity with 7T images is a major extenuating factor. Forthcoming technological developments are anticipated to improve upon the results.

OBJECTIVES/GOALS: Assistive technology (AT) can improve older adults’ function in daily activities. However, Latinos are among the least likely to use AT. Given that primary health care physicians (PCPs) have low awareness about AT, this study aims to evaluate the usability and acceptability of an AT WebAPP among PCPs to increase older Latinos’ access to AT. METHODS/STUDY POPULATION: A team of an established researcher, a sub-graduate faculty and student, and a graduate student will recruit ten PCPs in Puerto Rico and will interview them to explore their current practice in addressing the functional needs of older Spanish-speaking Latinos. The researchers will then train PCPs in the use of a Spanish evidence-based AT WebAPP developed in one of our earlier studies. PCP participants will use the APP with their older patients for 30 days. At the end of the usage period, the analysis will include a mixed method design, consisting of the simultaneous collection of quantitative data using a validated scale followed by qualitative data through individual interviews. Quantitative data will be analyzed with descriptive statistics and qualitative data with thematic content analysis. RESULTS/ANTICIPATED RESULTS: We expect that the AT WebAPP will be rated as particularly useful and acceptable by the PCPs to increase older Latinos’ access to information about AT that could compensate for their physical function disabilities. We also expect that PCPs will offer recommendations for enhancing the design and usability of the AT WebAPP. DISCUSSION/SIGNIFICANCE: Studying the usability and acceptability of this AT WebAPP among PCPs will advance our understanding of its feasibility in enhancing PCPs AT knowledge and recommendations of AT devices for older adults with disabilities in Puerto Rico and in Latino communities in the continental United States.

OBJECTIVES/SPECIFIC AIMS: In an effort to elucidate the role of potentially cancer chemopreventive drugs, we leveraged the Mayo Clinic-Karolinska Institute collaboration to create a multidisciplinary team that included an epidemiologist, statisticians, and physicians. We performed a population-based cohort study to examine the association between low dose aspirin, non-aspirin NSAIDs, statins, metformin, other risk factors and the risk of biliary tract cancer (BTC), while assessing confounding by sex. METHODS/STUDY POPULATION: We conducted a nationwide Swedish population-based cohort study using the Swedish Prescribed Drug Registry, which virtually completely enumerates use of prescribed medications nationwide since 2005. BTC diagnosis (intrahepatic cholangiocarcinoma [iCCA], extrahepatic cholangiocarcinoma [eCCA] or gallbladder cancer [GBC]) was ascertained from the Swedish Cancer Registry. Age-scaled Cox models, with exposure as time-varying covariates, were used to calculate hazard ratios (HRs), separately for men and women. RESULTS/ANTICIPATED RESULTS: In the 5.7 million person cohort, the risk of iCCA was significantly lower in men using statins (HR 0.62,95%CI 0.39-1.00, p = 0.05), with a non-significant reduction in women. Statin use was associated with a significantly decreased risk of eCCA in both women (HR 0.60,0.38-0.94, p = 0.03) and men (HR 0.47,0.28-0.80, p = 0.01). Low dose aspirin (HR 0.76,0.60-0.97, p = 0.03) was associated with a lower risk of GBC only in women, while statins (HR 0.72,0.55-0.93, p = 0.01) showed a significantly decreased risk of GBC in women and a non-significant reduction in men. For all BTC subtypes, combined use of low dose aspirin and statins did not confer additional risk reductions beyond those achieved by statins alone. Male and female users of non-aspirin NSAIDs appeared to be at increased risk of BTC and its subtypes. Metformin did not significantly affect risk of BTC. DISCUSSION/SIGNIFICANCE OF IMPACT: Our collaborative efforts allowed us to develop the largest population-based cohort evaluating risk and protective factors for BTC. Our results provide strong evidence in favor of the chemopreventive roles of low dose aspirin and statins in a subtype- and sex-specific manner. Individual risk factors contribute to development of BTC subtypes in different magnitudes. The next steps to translate these findings into clinical practice require randomized clinical trials that validate our results and provide a more complete picture of the risk-benefit ratio.

OBJECTIVES/GOALS: This poster shares a case study on how a group at The Johns Hopkins University formed a translational lab missioned to reinvent currently existing treatments for acute spinal cord injuries, implanting in humans within a five-year window. The poster showcases how a project funded by the Defense Advanced Research Projects Agency has been implemented. METHODS/STUDY POPULATION: The translational team; Holistic Electrical; ultrasonic and Physiological Interventions Unburdening those with Spinal cord injury• (HEPIUS) Lab is composed of many parts as listed below: neurosurgeons; engineers; radiologists; public health specialists; statisticians; patient advocates; ethicists; sonographers; researchers; academic collaborators; and specialized industry partners. Sometimes physically separated; the team has videoconferencing carts across locations to stay connected at every step in the process. The lab facilities were organized with several key facets in mind: research and development (R&D); prototyping; fabrication; verification; and validation (V&V); animal model testing; cadaveric testing accessibility; mock operating room for simulations; and collaboration hubs. RESULTS/ANTICIPATED RESULTS: Due to communications with the US Food and Drug Administration (FDA), DARPA, patient advocates, ethicists, internal review boards, and other bodies, the team has a clear path towards clinical translation. The team has the following stages in progress or scheduled: manufacturing devices, benchtop testing, rat and pig models, biocompatibility testing, cadaveric testing, and clinical use. The lab space was designed to achieve these core functions. For rapid, in-house manufacturing, the lab has unique capabilities including 3D metal printing. For experiments, industry collaborations and equipment acquisitions enable the highest quality research. These technologies are assembled into diagnostic, therapeutic, testing, and manufacturing hubs to drive real change in the lives of many; the patient comes first. DISCUSSION/SIGNIFICANCE: This laboratory, team, and system of operation is aimed to enable novel practices for the clinical translation of spinal cord medical solutions. For researchers interested in launching their own translational work, this poster may serve as a reference, example, and inspiration for similar hopeful university-centered hubs.

OBJECTIVES/GOALS: Establishing a career trajectory geared towards undergraduates interested in a biomedical career has led to the development of a Clinical Research Training (CRT) Program. The purpose of this study is to evaluate the student experience of the program. It is our hopes to train the next generation of clinical researchers straight out of undergrad. METHODS/STUDY POPULATION: Establishing the success of the recently established Clinical Research Training Program and creating quality improvement measures has been analyzed with a focus on 5 domains. Outcome quality measurements and evaluation of the following domains have been completed from a student’s experience. These domains include: 1) the capstone course, 2) the internship experience, 3) career development opportunities, 4) hands-on training opportunities, and 5) post-baccalaureate career plans or career attainment. Each of these outcomes have been collected from students who have completed the program as well as students currently enrolled. Data will be obtained via qualitative measures such as course surveys, Likert scale ratings, and evaluation of data-based outcomes. RESULTS/ANTICIPATED RESULTS: In this ongoing study, results will demonstrate there is a percentage of students who were directed into clinical research positions due to their exposure to the clinical research world during their undergraduate training. Transferable skills such as CITI training, knowledge of good clinical practice, and familiarity of current research topics are associated with a higher likelihood to pursue a career in clinical research. Students placed within an associated internship slot with the community partners has also led to an increase in career placement in clinical research. Other factors provided by the course such as establishment of an extensive network, exposure to career pathways related to clinical research, and an increase in cross-trainings that lead to increased advancement in the scientific domain. DISCUSSION/SIGNIFICANCE: To address clinical research workforce gaps by training students during their undergraduate education. Also, by addressing this gap, we can begin to strengthen the career trajectory and goals of students interested in a career in the life sciences. By targeting this workforce, it can lead to an increase in diversity and retention in the workforce.

ABSTRACT IMPACT: The findings suggest that targeting parenting stress in combination with psychoeducation on nutrition and physical activity may have positive effects in improving healthy food choices such as reduction of fast food intake, which may in turn impact the health of toddlers and their families. OBJECTIVES/GOALS: Parent stress is associated with a myriad of unhealthy behaviors including overeating, decreased physical activity, which contribute to increased weight. Several programs have aimed to increase education of nutrition, but few have focused on parent stress to improve healthy food intake. The present study assessed parent stress and fast food intake. METHODS/STUDY POPULATION: Parents who have obesity and had a toddler in the age group of 2-5 years were enrolled for a preventive intervention study to assess the effect of a parent-based intervention to improve family health choices and reduce childhood obesity risk. The sample included 105 participants, mean age 34.80 (6.27) years old, mean body mass index (BMI) 35.51 kg/m2, 39.0% Non-Hispanic White, 20.0% Non-Hispanic Black, 22.9% multiracial, 12.4% Hispanic, and 5.7% other. Stress was assessed using the Perceived Stress Scale (PSS) to assess overall general stress and the Parenting Stress Index (PSI) to assess parent-specific stress. Chaos in the home and fast food intake were also assessed using self-report surveys. RESULTS/ANTICIPATED RESULTS: Preliminary results are based on available data as of October 2020, data collection and recruitment are still in progress. There was a significant correlation between fast food intake with PSS (r=.18, p=.04), chaos (r=.24, p=.02), and PSI (r=.25, p=.01). Using a hierarchical regression model, we entered home chaos in the first block which explained a significant amount of the variability (R2= .06, p=.04). PSS was entered in the second block, which was not significant (R2 change=.01, p=.50), and in the final block PSI was entered and was significant (R2 change=.13, p <.01). DISCUSSION/SIGNIFICANCE OF FINDINGS: The data indicate that parenting stress uniquely predicts fast food intake above and beyond what could be explained by home chaos and general perceived stress. Future analyses will assess a parent-based intervention targeting stress reduction to improve weight and health for the parent and their toddlers in order to reduce childhood obesity risk.

OBJECTIVES/GOALS: As question complexity in science and medicine increase, the need for teams with diverse skill sets grows as well. We identify essential roles and barriers that define the team environment within the National COVID Cohort Collaborative (N3C), an initiative grounded in interdisciplinary team science. METHODS/STUDY POPULATION: This work was compiled through a combination of observations, interviews, and survey responses involving members of the N3C research community, specifically those involved in N3C workstreams and clinical domain teams. Observational data was obtained through participation in N3C workstream activities and domain team research and meetings. The survey included five questions related to team science elements and barriers, as well as contrasting science-based teams and non-science-based teams, such as “What elements are common between both Team-Science and non-Team-Science teams?”, and was sent to members of two domain teams: Immunosuppressed and Compromised and Social Determinants of Health. RESULTS/ANTICIPATED RESULTS: Team science within N3C has a unique structure of roles and barriers that define the team environment of each project. Within each group, team and role management within team science is an ongoing process that occurs even after a team is formed. We obtained 8 survey responses that indicated communication, attribution, team management, collaboration, interdisciplinary diversity, and problem solving were key aspects to successful team science. Additionally, survey respondents identified prominent barriers to successful team science that included bandwidth constraints, lack of a shared scientific language, learning curves, funding, and lack of communication. DISCUSSION/SIGNIFICANCE: Communication was identified as a key component of team science and a prominent barrier, which indicates that successful team science relies on communication between team members. Thus, it is vital that teams identify and commit to using predefined methods of communication to function effectively.

OBJECTIVES/GOALS: Prenatal cannabinoid use is increasing and more studies are needed to describe the neurodevelopmental impact on the fetus. However, pregnant cannabinoid users are a “hidden population,” which makes identification of these individuals for research difficult. Our study will employ three methods of recruitment and evaluate the success of each method. METHODS/STUDY POPULATION: We will recruit a total of 40 women in the third trimester of pregnancy who regularly use cannabinoid products thought to contain tetrahydrocannabinol (THC) and/or cannabidiol (CBD) throughout their pregnancies, and 20 control pregnant women who do not use those products. The purpose of this study is to evaluate the effects of prenatal cannabinoid use on the neurodevelopment of their offspring over the first year of life. We will employ three recruitment methods. First, targeted recruitment will occur in two university-based obstetrical clinics, where the obstetrician will present the study material and contact information. Second, we will utilize social media advertisements targeted to a specific demographic of Facebook users. Finally, we will employ the traditional method of distributing flyers in a non-targeted manner. We will track methods of recruitment success and gather information from the mothers on their preferences for recruitment approaches. RESULTS/ANTICIPATED RESULTS: Recruitment will start in January 2020 and continue for several months. We anticipate that the targeted method will yield the highest number of participants, and participants with the best fit for the inclusion criteria. However, it is possible that those women will be deterred by fear of having their drug use status revealed to their care providers, even though all research activity will occur independently from clinic visits and will not be transmitted to the electronic health record. The inclusion of a control group will also help foster “anonymity” for participants. The social media method has the potential for the greatest reach, but we expect many of these potential participants will fail to meet inclusion/exclusion criteria, as this is not as targeted as the first method. We anticipate a similar issue with the flyer-based approach. DISCUSSION/SIGNIFICANCE OF IMPACT: Optimizing recruitment of hidden and sensitive populations is crucial for clinical and translational research. Our goal is to identify strategies that can lead to best practices for engagement of those populations. Our conclusions could be applied in recruitment of sensitive populations for other clinical and translational research projects.

ABSTRACT IMPACT: Impaired neuromuscular control could lead to the failure in activation and deactivation of the target muscles in a timely manner, with the concurrence of activities of non-targeted muscles. OBJECTIVES/GOALS: Stroke leads to impaired capacity to manipulate objects with the hand in terms of timing and strength of grasp. The influence of abnormal coupling across more proximal arm muscles post stroke on the failure in normal functioning of finger flexor muscle activity is of interest to investigate. METHODS/STUDY POPULATION: We have recruited 12 participants with stroke hemiparesis in the sub-acute or chronic stage. Motor impairment of the arm was assessed using electromyography (EMG) and the Fugl-Meyer Upper Extremity (FMUE) assessment. Participants were requested to flex and relax the metacarpophalangeal (MCP) joints against motorized resistance in response to audible tones to determine timing and strength during flexion. They were asked to flex maximally, as quickly as possible, in response to the first of a pair of tones, and relax as quickly as possible after the second tone. Delays in initiation and termination were evaluated using EMG responses versus a predefined threshold. RESULTS/ANTICIPATED RESULTS: We anticipate greater delays in grasp initiation as well as in grasp termination in participants with a greater extent of abnormal coupling across more proximal muscles of the upper extremity in comparison to participants with a less extent, using the results of the FMUE assessment. Also it is expected that participants with a greater extent of the flexion synergy produce a less extent of force generation. The EMG results will show that activities of more proximal arm muscles precede the initiation of MCP flexion and their activity termination precedes that of MCP flexion, significantly more in participants with a greater extent of the flexion synergy. DISCUSSION/SIGNIFICANCE OF FINDINGS: The flexion synergy over the arm following stroke affects the timing and strength of hand grasp. Impaired neuromuscular control could lead to the failure in activation and deactivation of the target muscles in a timely manner, with the concurrence of activities of non-targeted muscles.