Absolute neutrophil count ? 1000/?L, with or without cytokine support Platelet count ? 50,000/?L, with or without transfusion or cytokine support Absolute neutrophil count >= 1,500/mcL (without transfusion or cytokine support) Growth factor or cytokine support Growth factor or cytokine support; Absolute neutrophil count ? 500/µL, with or without cytokine support Absolute neutrophil count greater than 1500/mm^3 without transfusion or cytokine support Growth factor/cytokine support; Absolute neutrophil count >= 1.5 x 10^9/L within 28 days of treatment initiation and must be independent of hematopoietic growth factor support Absolute neutrophil count (ANC) >= 1500/uL (with/without growth factor) Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support, at the screening visit Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support Absolute neutrophil count >= 1,500/mcL without growth factor support, =< 5 days prior to C1D1 Absolute neutrophil count (ANC) ? 1000/uL, with or without chronic granulocyte growth factor support Absolute neutrophil count ? 500/mcL, and have not received any growth factor support for at least 4 weeks prior to screening Absolute neutrophil counts of >= 1500/uL (without growth factor support) results within 7 days before study drug administration Absolute neutrophil count (ANC) >= 1.5 x 10^9/L in absence of growth factor support Patients must have adequate organ and bone marrow function within 14 days prior to registration, as defined by: absolute neutrophil count >= 1,500/mcL, regardless of transfusion or growth factor support Absolute neutrophil count (ANC) >= 500/ul in the absence of growth factor support unless due to compromised bone marrow production from CLL, indicated by >= 80% CLL in marrow Absolute neutrophil >= 1,000/mcL; transfusion and/or growth factor are permitted within any timeframe Absolute neutrophil count >= 1,000/mcL (without growth factor support) Absolute neutrophil count >= 500/mcL (in the absence of growth factor support), within 14 days prior to treatment Absolute neutrophil count >= 1,500/mcL, regardless of transfusion or growth factor support Absolute neutrophil count (ANC) >= 0.5 x 10^9/L without daily use of myeloid growth factor PHASE I: Absolute neutrophil count >= 1,500/mcL without growth factor support PHASE II SCLC: Absolute neutrophil count >= 1,500/mcL without growth factor support UROTHELIAL CARCINOMA EXPANSION COHORT: Absolute neutrophil count >= 1,500/mcL without growth factor support mCRPC EXPANSION COHORT: Absolute neutrophil count >= 1,500/mcL without growth factor support Absolute neutrophil count (ANC) >= 1,000/mcL with no growth factor support in the previous 3 weeks Absolute neutrophil count (ANC) >= 1,500 cells/ul without growth factor support Absolute neutrophil count >= 1.0 x 10^9 cells/L (growth factor use is allowed) Absolute neutrophil count >= 1,200/mcL (without growth factor support) Absolute neutrophil count >= 1.0 K/mcL, without use of growth factor support for 1 week Obtained =< 14 days prior to registration: Absolute neutrophil count (ANC) >= 1000/uL (without growth factor support) Received growth factor support or transfusions to achieve hematology entry criteria (platelets, hemoglobin, absolute neutrophil count) Absolute neutrophil count (ANC) >/= 1,500 cells/ul without growth factor support prior to initial treatment Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support Evidence of myeloid engraftment (eg, absolute neutrophil count ? 0.5 × 10^9/L for 3 consecutive days if ablative therapy was previously used). Use of growth factor supplementation is allowed. Absolute neutrophil count (ANC) >= 1500/ul (without growth factor support) Within 56 days prior to randomization: Absolute neutrophil count (ANC) >= 500 cells/mcL (0.5 x 10^9/L); hence ANC must be >= 500/mcL without myeloid growth factor support Absolute neutrophil count (ANC) ? 0.75 x 10^3/uL without treatment with a myeloid growth factor within 3 days prior to first dose of IP Absolute neutrophil count (ANC) >= 1.2 x 10^9/L without growth factor support Absolute Neutrophil Count (ANC) ? 1.5 x 109/L without growth factor support for 7 days (14 days if received pegfilgrastim). Absolute neutrophil count (ANC) ? 0.75 x 10^9/L in the absence of growth factor in the prior 7 days Absolute neutrophil count (ANC) >= 1.0 x 10^9 /L, independent of growth factor support unless with bone marrow involvement for 14 days Absolute neutrophil count >= 1,500/mcL without growth-factor support during the past month Absolute neutrophil count >= 1.0 x 10^9 cells/L (growth factor use is allowed) Absolute neutrophil count (ANC) > 0.75 x 10^9/L in the absence of growth factor in the prior 7 days At least 4 weeks (28 days) prior to registration: Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support Absolute neutrophil count (ANC) >= 1.0 × 10^9/L (without transfusion support and without hematological growth factor support within 2 weeks of cycle 1 day 1) Absolute neutrophil count (ANC) >= 1.0 x 10^9 /L. No transfusion or growth factor support for one week prior to labs. Absolute neutrophil count >= 1,000/mcL in the absence of growth factor administration Absolute neutrophil count (ANC) >= 1500/ul (without growth factor support) Neutrophils < 1.0 x 10^9/L (neutrophil count should be > 1000 without growth factor support, unless neutropenia is caused by anti-neutrophil antibodies or other manifestation of chronic GVHD) Absolute neutrophil count (ANC) equal or greater to 1000 without growth factor support for at least 5 days Absolute neutrophil count >= 1,500/mcL*\r\n* Participants may be receiving growth factor support to meet these criteria Absolute neutrophil count >= 1.0 K/uL (growth factor support is permissible) Absolute Neutrophil count (ANC) ? 1.0 x 109/L without daily use of myeloid growth factor; and Absolute neutrophil count >= 1,000/mcL independent of growth factor support Absolute neutrophil count >= 1.0 x 10^9/L (without growth factor support) Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (growth factor support is allowed to reach this goal) Absolute neutrophil count (ANC) >= 1.5 x 10^9/L without growth factor support Absolute neutrophil count (ANC) >= 500/ul without growth factor or transfusional support Absolute neutrophil count (ANC) >= 1000/ul without growth factor or transfusional support Subjects must have the following laboratory values: Absolute Neutrophil Count (ANC) ? 1.5 x 109/L without growth factor support for 7 days (14 days if subject received pegfilgrastim). Absolute neutrophil count (ANC) >= 1.5 X 10^9/L without (w/o) myeloid growth factor support for 7 days preceding lab assessment, obtained within 14 days prior to PET scan Absolute neutrophil count (ANC) ?1.5 x 109/L (in absence of growth factor support) Absolute neutrophil count (ANC) >= 1000/mm^3, independent of growth factor support, documented within 14 days of registration Absolute neutrophil count (ANC) > 1,000 cells/dL (1.0 x 10e9/L) (growth factor cannot be used within the previous 7 days) Absolute neutrophil count ?1,000/mm3 without growth factor use ? 7 days prior to treatment (cycle 1 day 1, C1D1) Absolute neutrophil count (ANC): >= 750/mm^3, must be at least 7days after last dose of growth factor Absolute neutrophil count < 1000 cells/mm^3. No growth factors allowed within 1 week of enrollment Absolute neutrophil count (ANC) ? 1,000 cells/mm3 (1.0 x 109/L) (Growth factors cannot be used within 10 days (14 days for pegfilgrastim) prior to initiation of therapy) Absolute neutrophil count > 1000/mm^3 without the support of growth factors Absolute neutrophil count (ANC) >= 1,000 cell/mm^3 without growth factor support, obtained =< 14 days prior to registration STRATUM A: Absolute neutrophil count (ANC) >= 1000/mm^3 without growth factor support within 7 days of the test STRATUM B: ANC >= to 1000/mm^3 without growth factor support within 7 days of the test STRATUM C: ANC >= 1,000/mm^3 without growth factor support within 7 days of the test Absolute neutrophil count (ANC) >= 1000/mm^3 independent of growth factor support To be performed within 14 days prior to day 1 of protocol therapy: Absolute neutrophil count (ANC) >= 1,500/mm^3\r\n* NOTE: growth factor support is not permitted to normalize baseline ANC parameters, however subsequent growth factor administration is permitted as standard supportive care Absolute neutrophil count (ANC) > 1,000/mm^3 independent of growth factor support Absolute neutrophil count (ANC) >= 1,000 cells/mm^3 without growth factors within 1 week of the initiation of treatment Absolute neutrophil count (ANC) < 1,000/mm3 without growth factor support within 7 days prior to testing Participants with an absolute neutrophil count (ANC) >= 1000/mm^3, within 21 days of initiation of protocol therapy; growth factor within 7 days of screening is not allowed to meet ANC eligibility criteria Participants with an absolute neutrophil count (ANC) < 1000/mm^3, within 21 days of initiation of protocol therapy; growth factor within 7 days of screening is not allowed to meet ANC eligibility criteria Absolute neutrophil count (ANC) >= 1,000/mm^3 without transfusion or growth factor support for at least 1 week Obtained =< 14 days prior to registration: Absolute neutrophil count (ANC) >= 1,000 cell/mm^3 without growth factor support Within 14 days prior to planned start of treatment: Absolute neutrophil count (ANC) >= 1000/mm^3\r\n* Growth factor is not permitted within 14 days of ANC assessment unless cytopenia is secondary to disease involvement Absolute neutrophil count (ANC) >= 1000/mm^3 independent of growth factor support Absolute neutrophil count (ANC) ? 1.5 K/mm^3 (must be stable off any growth factor within 4 weeks of first study drug administration) PART 2 GROUP 1 INCLUSION CRITERIA: Peripheral absolute neutrophil count (ANC) >= 1000/mm^3 (1.0 x 10^9/L) without granulocyte growth factor for >= 7 days PART 2 GROUP 2A INCLUSION CRITERIA: Peripheral ANC >= 1000/mm^3 (1.0 x 10^9/L) without granulocyte growth factor for >= 7 days PART 2 GROUP 3 INCLUSION CRITERIA: Peripheral ANC >= 1000/mm^3 (1.0 x 10^9/L) without granulocyte growth factor for >= 7 days Absolute neutrophil count >= 1000 cells/mm^3, with or without transfusion support; NOTE: If the patient’s bone marrow biopsy shows greater than or equal to 50% plasma cells, absolute neutrophil count (ANC) > 500 cells/mm^3 (transfusion support or growth factor support is acceptable) Absolute neutrophil count >= 1,000/mm^3 without growth factor use =< 7 days prior to C1D1 Absolute neutrophil count (ANC) >= 1,000 cells/mm^3 without growth factors within 1 week of the initiation of treatment Absolute neutrophil count (ANC) >= 1000/mm^3; growth factor is not permitted within 14 days of neutrophil assessment Absolute neutrophil count (ANC) >= 1000/mm^3 or >= 750/mm^3 in the setting of marrow involvement by disease (independent of growth factor or transfusion support) An absolute neutrophil count (ANC) > 1,000/mm^3 (patients who have bone marrow infiltration by MCL are eligible if their ANC is >= 500/mm^3 [growth factor allowed]; these patients should be discussed with either the principal investigator [PI] or Co-PI of the study for final approval) Absolute neutrophil count (ANC) ? 1000/mm3, independent of growth factor support; Absolute neutrophil count (ANC) 550/cu mm (off myeloid growth factors) Absolute neutrophil count (ANC) >= 1,000/mm^3 without growth factor support Relapsed/refractory MCL: Absolute neutrophil count (ANC) >= 500/mm^3; (patients who have bone marrow infiltration by MCL are eligible if their ANC is >= 500/mm^3 [growth factor allowed]; these patients should be discussed with either the principal investigator [PI] or Co-PI of the study for final approval) Absolute neutrophil count (ANC) >= 1.0 x 10^9/L; screening ANC should be independent of growth factor support for over one week for all patients Within 14 days prior to day 1 of protocol therapy unless otherwise stated: Absolute neutrophil count (ANC) >= 1,000/mm^3\r\n* NOTE: Growth factor is not permitted within 14 days of ANC assessment unless cytopenia is secondary to disease involvement Absolute neutrophil count (ANC) >= 1,500/mm^3 (without transfusion or growth factor support) To be performed within 28 days prior to day 1 of protocol therapy: Absolute neutrophil count (ANC) >= 1500/mm^3\r\n* NOTE: Growth factor is not permitted within 14 days of ANC assessment unless cytopenia is secondary to disease involvement Absolute neutrophil count (ANC) >= 1,000 cell/mm^3 without growth factor support within 14 days prior to registration Participants with an absolute neutrophil count (ANC) < 1000/mm^3, within 21 days of initiation of protocol therapy; growth factor within 7 days of screening is not allowed to meet ANC eligibility criteria Absolute neutrophil count (ANC) < 1,000 cells/mm^3 within 21 days of initiation of protocol therapy; growth factor administration is not allowed to meet ANC eligibility criteria ANC ?1000/mm3 (?1.0 × 109/L) without growth factor support for 14 days Within 14 days prior to registration: Absolute neutrophil count (ANC) >= 1,000 cells/mm^3 without growth factor support Within 72 h of initiating study treatment: Absolute neutrophil count (ANC) >= 1000/mm^3; Note: transfusions of blood and blood products as well as growth factor support are prohibited within 14 days prior to the first dose of study treatment Within 28 days prior to signing informed consent: Absolute neutrophil count (ANC) >= 1,000/mm^3, independent of growth factor support Subjects with an absolute neutrophil count (ANC) < 1000 cells/mm3; growth factors may not be used to meet ANC eligibility criteria Absolute neutrophil count (ANC) ? 1000/mm3 (screening ANC should be independent of growth factor support for ? 1 week) Participants with an absolute neutrophil count (ANC) < 1000 cells/mm^3 at time of screening evaluation; growth factor may not be used to meet ANC eligibility criteria within 14 days of obtaining screening evaluation Absolute neutrophil count (ANC) > 1000/mm^3 without growth factors or transfusions Absolute neutrophil count (ANC) > 1,500/mm^3; (patients who have bone marrow infiltration by MCL are eligible if their ANC is >= 1000/mm^3 [growth factor not allowed] or their platelet level is >= 50,000/mm^3) Participants with an absolute neutrophil count (ANC) < 1500 cells/mm^3 at time of screening evaluation; growth factor may not be used to meet ANC eligibility criteria within 7 days of obtaining screening evaluation Absolute neutrophil count (ANC) > 1,500 (growth factors permitted) Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (>= 1500/mm^3) may be supported by transfusion and/or hematopoetic growth factors Absolute neutrophil count (ANC) >= 1.5 x 10^9/L (growth factors not permitted to make eligible) Absolute neutrophil count (ANC) >= 1,000 cells/mm^3 (without platelet transfusion or myeloid growth factor support within two weeks of screening) Absolute neutrophil count (ANC) > 1,000/mm^3; (patients who have bone marrow infiltration by MCL are eligible if their ANC is 500/mm^3 [growth factor allowed] or their platelet level is equal to or > than 30,000/mm^3) Absolute neutrophil count (ANC) >= 1500 cells/mm3 without growth factor support Absolute neutrophil count ? 1,500/mm3 (not supported by growth factors in the preceding 21 days); Peripheral absolute neutrophil count (ANC) >= 1000/mm^3; \r\n* Note: must be > 7 days from use of hematopoietic growth factor or 21 days from pegfilgastrim Absolute neutrophil count (ANC) < 1,000/mm3 without growth factor support within 7 days prior to testing Absolute neutrophil count (ANC) ? 1,500/µL (without growth factors) Absolute neutrophil count >=1,500 per cubic millimeter (/mm^3), not supported by growth factor Absolute neutrophil count (ANC) >= 1500/mm^3 (1.5 x 10^9/L) (participants receiving transfusion, erythropoietin, or myeloid growth factor support will be eligible for this study) Absolute neutrophil count (ANC) ? 1000/mm³ within 21 days prior to randomization. Screening ANC should be independent of growth factor support for ? 1 week. Absolute neutrophil count (ANC) >= 1,000 cells/dL (1.0 x 10^9/L) (growth factors cannot be used within 7 days of first drug administration) Absolute neutrophil count >1000 cells/mm^3 without growth factors for 7 days. Absolute neutrophil count >= 500 cells/mm^3 (0.5 x 10^9/L); growth factor allowed to achieve Absolute neutrophil count (ANC) > 1000/mm^3 without growth factors or transfusions