Fadi Haddad, MD, The University of Texas MD Anderson Cancer Center, Houston, TX, discusses a study investigating the effect of prior bariatric surgery on outcomes in patients with CML. The findings suggest that, even when controlling for Sokal score, BMI, comorbidities, and other factors, patients with a history of bariatric surgery had worse overall survival, required more TKIs, and took longer to achieve a major molecular response than patients with no historic of bariatric surgery.