The X Factor in Immunity: Sex Differences Shaped by the X Chromosome

This document discusses the sex differences in immune responses, noting that females generally have stronger immune responses than males. These differences are influenced by both sex hormones and sex chromosome differences, particularly the X chromosome. The paper reviews recent findings on the role of X-linked genes and epigenetic mechanisms like X-Chromosome Inactivation (XCI) in shaping immune responses. It also examines dosage-sensitive X-linked genes linked to female-biased autoimmune diseases and explores sex differences in immune signaling, viral infections, and vaccine responses. The ultimate goal is to use these insights to develop sex-specific therapeutic interventions for immune-related diseases.