PARTICIPANTS NOT ON THE HODGKIN LYMPHOMA EXPANSION COHORT: Serum lipase and amylase < 1.5 x ULN, within 2 weeks prior to enrollment PARTICIPANTS ON THE HODGKIN LYMPHOMA EXPANSION COHORT: Serum lipase and amylase < 1.5 x ULN, within 2 weeks prior to enrollment Serum lipase and amylase =< 1.5 x ULN Amylase and lipase =< 2 x ULN Amylase and lipase < 1.5 x ULN obtained ? 14 days prior to randomization Amylase and lipase =< 1.5 ULN; subjects with amylase or lipase > 1.5 ULN may enroll if there are neither clinical nor radiographic signs of pancreatitis Serum lipase and amylase =< 1.5 x ULN. Serum lipase and amylase =< 1.5 x ULN. Serum amylase/lipase =< 1.5 x ULN FULL STUDY INCLUSION CRITERIA: Amylase and lipase =< 1.5 x ULN Serum amylase and lipase =< 2 x ULN Serum amylase and lipase =< 1.5 x ULN Serum amylase and lipase =< 1.5 x institutional ULN Normal serum lipase and amylase (per institutional normal values) Have normal pancreatic status as defined by the following criterion: a. Serum lipase and amylase ? 1.5 × ULN Serum lipase and amylase =< 1.5 x ULN Serum lipase and amylase =< 1.5 x ULN Within 14 days prior to first dose of study drug treatment: Amylase and lipase =< 1.5 x ULN Serum amylase and lipase within normal limits Amylase and/or lipase =< 1.5 x ULN, obtained =< 7 days prior to registration Patients must have a lipase and amylase performed within 7 days prior to sub-study registration Serum amylase and lipase =< 1.5 x the ULN Within 14 days of subject registration: Serum amylase =< 2 x ULN and serum lipase within normal limits Amylase or lipase within normal limit (per institutional standards) Amylase (0-160 U/L) and lipase (0-130 U/L) levels within 1.5 times the range of normal Amylase and lipase =< 1.5 x the upper limit of normal Patients must have a lipase, amylase, TSH with reflex free T3/T4 performed within 7 days prior to sub-study registration; (Note: For the Canadian sites, testing for lipase only is acceptable) Amylase and lipase <=ULN [Applies to Phase 2]. Amylase and lipase ? 2X upper limit of normal Asymptomatic serum amylase or lipase > Grade 2 Adequate pancreatic function, defined as amylase and lipase less than or equal to 1.5 X ULN Amylase and lipase =< 2 times institutional ULN for age Obtained =< 7 days prior to registration:\r\nSerum amylase and lipase =< 1.5 x upper limit of normal (ULN) Serum lipase and amylase =< 2.5 x ULN; NOTE: if subject has tumor involvement in the liver =< 3 x ULN Serum lipase/amylase ?1.5 x ULN Serum amylase > 1.5 x ULN or serum lipase > 1.5 x ULN. Amylase and lipase equal to, or less than, the institutional ULN Amylase and lipase levels =< ULN Amylase and lipase =< 1.5 x ULN Amylase and lipase < 1.5 x of ULN Serum amylase or lipase <1.5 x ULN; Amylase and lipase =< 2 x ULN Amylase and lipase ? 2.5 x ULN (? 5 x ULN for subjects with pancreas involvement with tumor) Serum lipase ? 3 x ULN and serum amylase within the normal range Serum lipase ? 3 x ULN and serum amylase within the normal range Lipase and amylase =< 1.5 x ULN Serum amylase and lipase within normal limits Amylase and lipase ? 1.5 x ULN Amylase and Lipase < 1.5 x normal for age.