Familial eosinophilia maps to the cytokine gene cluster on human chromosomal region 5q31-q33. Rioux JD, Stone VA, Daly MJ, et al. Familial eosinophilia maps to the cytokine gene cluster on human chromosomal region 5q31-q33. Am J Hum Genet. 1998;63(4):1086-94. doi:10.1086/302053 Read more