OBJECTIVES/GOALS: Writing self-efficacy & self-regulation are tied to publication & grant submission” writers high in these traits are more productive. We investigated if participating in Shut Up & Write! would produce statistically significant gains in self-efficacy & self-regulation when comparing pre/post surveys. METHODS/STUDY POPULATION: 47 US med students, TL1/KL2, & early-career faculty expressed interest in participating. We conducted a 12-week, 1 hr/week Shut Up & Write!-style (SUAW) activity, held on Zoom, and measured the effect using a pre-post survey adapted from the Writer Self-Perception Scale. Matched pairs t-tests (I2=0.05) to test for significant differences between pre- and post-test means were conducted on 3 subscales. The 3 subscales reflected writing attitudes (self-efficacy), writing strategies (self-regulation), and avoiding writing distractions (self-regulation). Subscales showed acceptable internal consistency with Cronbach’s alphas of 0.80, 0.71, and 0.72. RESULTS/ANTICIPATED RESULTS: 24/37 (65%) completed pre-post surveys. 81% presented as female. 60% were NIH-defined URB and/or were from MSIs. 60% previously participated in an activity similar to SUAW. Sum scale statistics for those who previously participated were significant for the self-efficacy subscale (p=0.020) and writing strategies subscale (p=0.041). Sum scale statistics for those who had not previously participated were significant for the writing strategies subscale (p=0.002). We saw no difference in the avoiding writing distractions subscale. 80% were very satisfied/satisfied with SUAW (I really loved these sessions” they helped me to identify a writing goal that could actually be accomplished in an hour.) DISCUSSION/SIGNIFICANCE: We found significant differences in self-efficacy & self-regulation, building upon findings from a 2021 pilot, and providing evidence that regular participation in an activity like SUAW produces increased self-efficacy and self-regulation and may increase manuscript and grant-writing productivity