Based on limited published evidence, REX1BD is a protein with binding capacity involved in heterochromatin organization. REX1BD regulates position-dependent silencing within heterochromatin repeats through interaction with 14-3-3 protein, coordinating RNAi and HDAC pathways to modulate epigenetic landscapes 1. REX1BD was identified as a component of the RISK4LEP blood transcriptomic signature, which prospectively predicts leprosy development 4-61 months before clinical diagnosis in household contacts of leprosy patients 2. The specific molecular mechanisms underlying its role in disease pathogenesis remain unclear.