Trends in racial and gender diversity among adult hemato-oncology trainees over last decade and impact of Covid.

9011 Background: We aim to examine trends in racial and gender diversity of trainees within adult and pediatrics hemato-oncology (H-0) fellowships, and evaluate the impact of COVID on the racial and gender proportions of trainees within H-0 training programs. Methods: Accredited Council for Graduate Medical Education (ACGME) data were queried to identify hemato-oncology trainees between 2014 and 2024. Trainees were identified based on self-reported race and gender. We defined 2016-17 to 2019-20 and 2020-21 to 2023-24 era as pre and post COVID years. Student T-tests were used to assess differences between groups and trends. Results: Average number of the female H-0 fellows (44.1%) is significantly lower compared with men (55.4 %) [p <0.005 ] . There is a slow but steady increase in female representation in H-0 fellowship across the study period as the gender gap has declined from 15.4 % in 2016-2017 to 7.2 % in 2023-2024. There is a non-statistical increase in the proportion of females in H-0 fellowships (44.1%) post covid compared with pre covid era (42.3%) [p = 0.0054]. Blacks (3.4%) represented a lower proportion of H-0 fellows compared to Whites (37.2%, p < 0.005), Asians (34.0%, p<0.005), and Hispanics (5.0%, p<0.005). Asian H-0 fellows saw the highest increase in the percentage (12.7%) from 2014-2015 to 2022-2023 followed by white H-0 fellows (3.4%) while the Hispanics and blacks H-0 fellows (2.8 and 2.4% respectively) had miniscule increase in the same time frame . There is also a significant increase in Asian H-0 fellows (10.8%) post covid compared to Black fellows (1.5%). Conclusions: This study reveals persistent gender and racial/ethnic disparities within H-0 fellowships in the United States. While the proportion of female trainees has gradually increased in H-0, they remain underrepresented compared to men. Regarding diversity, the data shows underrepresentation of Black and Hispanic individuals in H-0 fellowships, with Asian trainees experiencing the greatest growth. Importantly, the COVID-19 pandemic did not significantly impact these existing disparities. These findings underscore the need for targeted efforts to address systemic barriers limiting diversity and inclusion in the hematology-oncology workforce. Potential strategies include holistic admissions, mentorship programs, and pipeline initiatives to support underrepresented minority students and trainees.