A Call for Updates to Hormone Therapy Guidelines for Gender-Diverse Adults Assigned Male at Birth.

Gender-affirming hormone therapy for assigned male at birth (AMAB) individuals with gender incongruence typically consists of estradiol with or without an anti-androgen to achieve physical changes and psychological benefits. However, prescribed hormone regimens vary considerably, and high-quality research in this area is extremely limited. Additional evidence-based research evaluating patient-reported outcome measures (PROMs) is needed to fill current knowledge gaps and create a personalized therapeutic approach for AMAB individuals. This editorial provides a critical description of current treatment options, discusses their variability, reviews some discrepancies in guideline-based dosing recommendations, and recommends areas for further study.