A multivariate linear regression showed that age at the time of leukemia diagnosis was negatively correlated with the LSBMD SDS (β = −0.049, p = 0.043); BMI SDS and IGF-1 SDS at the time of the DXA examination were positively associated with the LSBMD SDS (β = 0.244, p < 0.001 and β = 0.124, p = 0.041, respectively) (Table 2). The gene discussed is IGF1; the disease is leukemia.