Absolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mclXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,000 cells/mcL within 42 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mclXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mL within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1500/mcL (1.5 x 10^9/L) obtained within 2 weeks prior to registrationXx_NEWLINE_xXRE-REGISTRATION ELIGIBILITY CRITERIA (STEP 2): Absolute neutrophil count (ANC) >= 1.0 x 10^9/LXx_NEWLINE_xXAbsolute neutrophil count (ANC) greater than or equal to 1,500/mclXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,200/mcL (subjects may be treated with hematopoietic growth factors to achieve or maintain this level)Xx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcl obtained within 28 days prior to sub-study registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1.5 x 10^9/L measured within 28 days prior to randomizationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 750/mcl within 28 days prior to registrationXx_NEWLINE_xXObtained within 28 days prior to registration: Absolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,000/mcL; must be obtained within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXAbsolute neutrophil count (ANC) of >= 1,500/mL within 21 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXWithin 14 days prior to registration: Absolute neutrophil count (ANC) >= 1,500/mcLXx_NEWLINE_xXCLINICAL/LABORATORY CRITERIA: Absolute neutrophil count (ANC) >= 1500/mcL; these results must be obtained within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) greater than or equal to 1,500/mcl, within 14 days prior to registration; this ANC cannot have been induced by granulocyte colony stimulating factorsXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mclXx_NEWLINE_xXObtained within 28 days prior to registration: Absolute neutrophil count (ANC) >= 1,500/mclXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1.5 x 10^9/L within 14 days prior to registration.Xx_NEWLINE_xXWithin 28 days prior to registration: ANC >= 1,000/mcLXx_NEWLINE_xXWithin 14 days prior to registration: Absolute neutrophil count (ANC) >= 1,500/mclXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500 microliter (mcL)Xx_NEWLINE_xXWithin less than or equal to 14 days prior to registration: Absolute neutrophil count (ANC) >= 1.5 x 10^9/LXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500 microliter (mcL), obtained within 28 days prior to step 2 registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcL within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcL within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1,500/mcL within 28 days prior to registrationXx_NEWLINE_xXAbsolute neutrophil count (ANC) >= 1 x 10^9/L within 30 days of day 1 of studyXx_NEWLINE_xX