Interns from BCTIP Cohort 1 will present work from their internships. Zhen Liu: Epidemiology of primary brain tumors using SEER-Medicare data Zihan Wang: DNA methylation change associated with drug use groups in lower back pain population from Quebec Pain Research Network (QPRN) Songyun Zhang: Efficacy of Ustekinumab Dose Interval Shortening in Partial or Unresponsive Crohn's Disease