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Abstract: Effective mentorship is a pivotal factor in shaping the career trajectory of trainees interested in classical hematology (CH), which is of critical importance due to the anticipated decline in the CH workforce. However, there is a lack of mentorship opportunities within CH compared with medical oncology. To address this need, a year-long external mentorship program was implemented through the American Society of Hematology Medical Educators Institute. Thirty-five hematology/oncology fellows interested in CH and 34 academically productive faculty mentors from different institutions across North America were paired in a meticulous process that considered individual interests, experiences, and background. Pairs were expected to meet virtually once a month. Participation in a scholarly project was optional. A mixed-methods sequential explanatory design was used to evaluate the program using mentee and mentor surveys, a mentee interview, and a mentee focus group. Thirty-three mentee-mentor pairs (94.2%) completed the program. Sixty-three percent of mentee respondents worked on a scholarly project with their mentor; several mentees earned publications, grants, and awards. Mentee perception that their assigned mentor was a good match was associated with a perceived positive impact on confidence (P = .0423), career development (P = .0423), and professional identity (P = .0302). Furthermore, 23 mentees (66%) accepted CH faculty positions after fellowship. All mentor respondents believed that this program would increase retention in CH. This mentorship program demonstrates a productive, beneficial way of connecting mentees and mentors from different institutions to improve the careers of CH trainees, with the ultimate goal of increasing retention in CH., (© 2024 by The American Society of Hematology. Licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0), permitting only noncommercial, nonderivative use with attribution. All other rights reserved.)

Avatrombopag is a newer thrombopoietin receptor agonist (TPO-RA) currently approved to treat chronic ITP (duration >12 months). No studies have yet evaluated the safety and effectiveness of avatrombopag in newly diagnosed ITP (duration <3 months) or persistent ITP (duration 3-12 months), and so its use in these populations is presently off-label worldwide. We hypothesize that avatrombopag has similar safety and effectiveness irrespective of ITP disease phase. To evaluate this, we performed a multicenter observational cohort study of adults with ITP treated with avatrombopag, comparing patient outcomes by disease phase (newly diagnosed/persistent versus chronic). Seventy-five patients were included, 23 with newly diagnosed/persistent ITP (17.7 patient-years of avatrombopag treatment) and 52 with chronic ITP (65.3 patient-years of avatrombopag treatment). On avatrombopag, 91% of newly diagnosed/persistent patients versus 96% of chronic patients (p = .58) achieved a platelet response (≥50 × 10 9 /L) and 86% versus 81% of patients (p = .78) achieved a complete response (≥100 × 10 9 /L). Median platelet counts on avatrombopag were similar between the two groups (165 × 10 9 /L vs. 129 × 10 9 /L, p = .57). Response durability was high and similar in both groups. No patients in the newly diagnosed/persistent group had a major bleeding event, thromboembolic event or avatrombopag discontinuation for adverse events, compared with 4, 1, and 2, respectively, in the chronic group. Thrombocytosis (platelets ≥400 × 10 9 /L) incidence was similar in the two groups. No other drug-related adverse events occurred in either group. Avatrombopag was safe and effective in patients with newly diagnosed and persistent ITP, with outcomes numerically, statistically, and clinically similar to patients receiving avatrombopag for chronic ITP., (© 2023 Wiley Periodicals LLC.)