Patient must be disease-free >= 3 years of prior malignancies with the exception of adequately treated non-melanoma skin cancer, adequately treated in situ carcinoma, low grade prostate carcinoma (Gleason grade =< 6) managed with observation that has been stable for at least 6 months Any concurrent active malignancy requiring treatment (other than basal or squamous cell carcinoma of the skin, carcinoma in situ of the cervix, superficial bladder tumors, or other malignancies curatively treated > 3 years prior to study entry); patients with adenocarcinoma of the prostate that has been surgically treated and with a post-treatment prostate specific antigen (PSA) that is non-detectable will not be excluded Patients with another active malignancy will not be eligible except for:\r\n* Resected basal cell carcinoma and squamous cell carcinoma of the skin, cervical or prostatic intraepithelial neoplasia, and ductal or lobular carcinoma in situ of the breast\r\n* Patients with localized prostate cancer who have received curative intent therapy are also eligible provided:\r\n** Surgically treated patients have an undetectable prostate specific antigen (PSA)\r\n** Patients treated with brachytherapy have a PSA within the institutional normal range\r\n** Patients who have received pelvic external beam radiotherapy are not eligible Diagnosis of other malignancy within 2 years prior to enrollment except adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the bladder, breast, or cervix, or low grade (Gleason ?6) prostate cancer Previous malignant disease (other than Merkel cell carcinoma) diagnosed within 3 years from day 1 of study treatment that could interfere with study endpoints or put patient safety at risk\r\n* (NOTE: Exception will be made for adequately treated basal or squamous cell carcinoma of the skin or carcinoma in situ [skin, bladder, cervical, colorectal, breast] or low grade prostatic intraepithelial neoplasia or grade 1 prostate cancer; any other neoplasm, which is adjudged by the treating investigator to have a low risk of recurrence during the study, could be enrolled only after written approval from the medical monitor) Other malignancy diagnosed or requiring treatment within the past 3 years with the exception of adequately treated basal cell carcinoma, squamous cell skin cancer, carcinoma in-situ of the cervix or breast or very low and low risk prostate cancer in active surveillance. A diagnosis of another active malignancy with the following exceptions: basal or squamous cell carcinoma of the skin, in-situ carcinoma of the cervix, isolated elevation of prostate-specific antigen, indolent secondary malignancies not requiring active therapy, or with the approval of the principal investigator; subjects with a completely treated prior malignancy and no evidence of disease for >= 2 years are eligible Prior malignancy requiring systemic therapy within the last 5 years except for treated basal or squamous cell skin cancer; history of low-grade malignancies with limited potential to progress as determined by the primary investigator may be enrolled Other malignancy within the last 3 years, other than curatively treated basal cell or squamous cell skin cancer, carcinoma in situ of the cervix, organ-confined or treated nonmetastatic prostate cancer with negative prostate-specific antigen, in situ breast carcinoma after complete surgical resection, or superficial transitional cell bladder carcinoma History of other active malignancies other than multiple myeloma within the past 3 years prior to study entry, with the following exceptions: adequately treated in situ carcinoma of the cervix uteri, basal cell carcinoma of the skin or localized squamous cell carcinoma of the skin, localized prostate cancer Gleason grade 6 or lower AND with stable prostate specific antigen (PSA) levels off treatment, previous malignancy confined and surgically resected (or treated with other modalities) with curative intent. Patients with another primary malignancy within 3 years prior to starting study drug, with the exception of adequately treated in-situ carcinoma of the uterine cervix, clinically localized prostate cancer, biochemically relapsed non-metastatic prostate cancer (i.e. prostate specific antigen [PSA] only disease), or skin cancer (such as basal cell carcinoma, squamous cell carcinoma, or non-melanomatous skin cancer) Presence of active 2nd malignancy requiring treatment; 2nd malignancies with low activity which do not require treatment (i.e. low grade prostate cancer, basal cell or squamous cell skin cancer) do not constitute exclusions Previous or concomitant cancers within the past 3 years other than curatively treated carcinoma in situ of the cervix, basal cell carcinoma of the skin, curative treatment for transitional cell carcinoma of the bladder, and low risk prostate cancer; except for prostate cancer (which can be observed if low risk), other cancers listed must have been treated in the past 3 years without evidence of recurrence at the time of registration Other malignancy diagnosed or requiring treatment within the past 3 years with the exception of adequately treated basal cell carcinoma, squamous cell skin cancer, carcinoma in-situ of the cervix or breast or very low and low risk prostate cancer in active surveillance Subject has a previous (within 5 years) or current malignancy other than the target cancer with the exception of curatively treated local tumors such as carcinoma in situ of the breast or cervix, basal or squamous cell carcinoma of the skin, or prostate cancer with Gleason Grade < 6 and prostate-specific antigen within normal range. Diagnosis of other malignancy within 5 years, except for adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the breast or cervix, or low-grade (Gleason ?6) prostate cancer Previous or concurrent malignancy with exception of adequately treated basal cell or squamous cell carcinoma, in-situ carcinoma of the cervix or breast, treated curatively and without evidence of recurrence for at least 3 years prior to study drug infusion, or prostate cancer that was treated with prostatectomy or radiotherapy over 2 years before day 1 of protocol therapy and patients whose prostate-specific antigen (PSA) is undetectable at study entry Other malignancy diagnosed or requiring treatment within the past 3 years with the exception of adequately treated basal cell carcinoma, squamous cell skin cancer, carcinoma in-situ of the cervix or breast, or low-risk Gleason grade =< 6 localized prostate cancer not requiring therapy Patients must not have any other malignancies within the past 2 years except for in situ carcinoma of any site, or adequately treated (without recurrence post-resection or post-radiotherapy) carcinoma of the cervix or basal or squamous cell carcinomas of the skin or active non-threatening second malignancy that would not, in the investigator's opinion, potentially interfere with the patient's ability to participate and/or complete this trial; examples include but not limited to: urothelial cancer grade Ta or T1, adenocarcinoma of the prostate treated by active surveillance Presently has a second malignancy other than squamous cell carcinoma of the head and neck (SCCHN), or history of treatment for invasive cancer other than SCCHN in the past 3 years. Exceptions are:\r\n* Previously treated in-situ carcinoma (ie, noninvasive)\r\n* Cervical carcinoma stage 1B or less\r\n* Noninvasive basal cell and squamous cell skin carcinoma\r\n* Radically treated prostate cancer (prostatectomy or radiotherapy) with normal prostate-specific antigen, and not requiring ongoing antiandrogen hormonal therapy History of another primary malignancy within 5 years prior to starting study treatment, except for adequately treated basal or squamous cell carcinoma of the skin or cancer of the cervix in situ; patients with an early stage cancer, now off therapy for at least 3 years may be enrolled with permission of the principal investigator (PI) if that disease is unlikely to interfere with the primary endpoints of this study Prior malignancies within the past 1 year with exception of adequately treated basal cell, squamous cell skin cancer, or thyroid cancer; carcinoma in situ of the cervix or breast; prostate cancer of Gleason grade 6 or less with stable prostate specific antigen (PSA) levels Diagnosis or treatment for any malignancy other than non-Hodgkin lymphoma (NHL) within the 3 years preceding day 1 of the protocol therapy; exceptions are:\r\n* Basal or squamous cell carcinoma of the skin\r\n* In situ malignancy that has been completely resected\r\n* Prostate cancer that was treated with prostatectomy or radiotherapy over 2 years before day 1 of protocol therapy as long as the prostate specific antigen (PSA) is undetectable The subject has a history of unrelated neoplastic disease, which has been deemed active within thirty-six (36) months of the screening evaluation, with the exception of the following:\r\n* Non-invasive non-melanoma skin cancer such as superficial basal cell carcinoma or squamous cell carcinoma\r\n* In female subjects: high-grade or low-grade squamous intraepithelial lesions or equivalent cervical lesions\r\n* In male subjects: tumors of the prostate with a combined Gleason score =< 7 Has a known additional malignancy that has had progression or has required active treatments in the last three years; exceptions include basal cell carcinoma of the skin, squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer; a history of prostate cancer that was treated with surgery is acceptable, provided that the following criteria are met: stage T2N0M0 or lower; prostate specific antigen (PSA) undetectable for 1 year while off androgen deprivation therapy; patients on active surveillance for low grade prostate cancer are allowed to participate DONOR: Any malignancies in the 2 years prior to baseline, excluding: basal cell carcinoma, in situ malignancy, low-risk prostate cancer, cervix cancer after curative therapy Active malignancy within the last 3 years, except for adequately treated basal cell carcinoma, squamous cell skin cancer, low-risk prostate cancer (i.e. prostate-specific antigen [PSA] =< 10, Gleason sum =< 6), or carcinoma in situ of the cervix or breast Known additional malignancy that is progressing or requires active treatment excepting basal cell carcinoma of the skin, squamous cell carcinoma of the skin that has undergone potentially curative therapy or in situ cervical cancer. A history of prostate cancer that was treated with definitive intent (surgically or through radiation therapy) is acceptable provided that the following criteria are met: Stage T2N0M0 or lower; Gleason score ?7 and prostatic-specific antigen (PSA) undetectable for at least 1 year while off androgen deprivation therapy that was either treated with definitive intent or untreated in active surveillance that has been stable for the past year prior to study allocation Known additional malignancies within the past 3 years (excluding basal of squamous cell skin cancers, carcinoma in situ (CIS) or localized prostate cancer that has been treated or is being observed) Non-hematologic malignancy within the past 3 years aside from the following exceptions: \r\n* Adequately treated basal cell or squamous cell skin cancer \r\n* Carcinoma in situ of the cervix \r\n* Prostate cancer < Gleason grade 6 with a stable prostate specific antigen (PSA) \r\n* Successfully treated in situ carcinoma of the breast PHASE II STUDY METASTATIC CASTRATE-RESISTANT PROSTATE CANCER COHORT 4 ELIGIBILITY CRITERIA (MEDI+O ONLY):\r\nPatients with any other concomitant or prior invasive malignancies are ineligible, however, patients with prior cancer treated with a curative intent with no evidence of recurrent disease 2 years following diagnosis and judged by the investigator to be at low risk of recurrence are eligible; patients with treated limited stage basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the breast are eligible Any concomitant or prior invasive malignancies with the following curatively treated exceptions:\r\n* Treated limited stage basal cell or squamous cell carcinoma of the skin\r\n* Carcinoma in situ of the breast or cervix\r\n* Primary endometrial cancer meeting the following conditions: stage not greater than IA, grade 1 or 2, no more than superficial myometrial invasion, without vascular or lymphatic invasion; no poorly differentiated subtypes, including papillary serous/serous, clear cell, or other International Federation of Gynecology and Obstetrics (FIGO) grade 3 lesions\r\n* Prior cancer treated with a curative intent with no evidence of recurrent disease 3 years following diagnosis and judged by the investigator to be at low risk of recurrence History of other active malignancies < 3 years prior to screening except basal cell carcinoma, low grade Gleason score ? 6 prostate cancer that has been removed with undetectable prostate-specific antigen (PSA), and in situ cervical carcinoma. Invasive malignancy other than ameloblastoma within 3 years, excluding curatively treated basal cell carcinoma, and other highly curable cancers such as early stage cutaneous squamous cell carcinoma (T1 NO) cervical carcinoma in situ (CIS), early stage prostate cancer, thyroid cancer, breast cancer, or history of malignancy with confirmed activating RAS mutation at any time Less than 2-years disease free from another primary malignancy (other than squamous or basal cell carcinoma of the skin, \in-situ\ carcinoma of the cervix or breast, superficial bladder carcinoma, or previously treated localized prostate cancer with normal prostate-specific antigen [PSA] levels); patients are not considered to have a \currently active\ malignancy if they have completed anti-cancer therapy, are considered by their physician to be at less than 30% risk of relapse and at least 2 years have lapsed Patients with other known malignancies within the past three years except: i. adequately treated basal or squamous cell skin cancer; ii. carcinoma in situ of the cervix; iii. prostate cancer with Gleason score < 6 with stable prostate-specific antigen (PSA) over the past three months; iv. breast cancer in situ with full surgical resection Noninvasive basal cell and squamous cell skin carcinoma Radically treated prostate cancer (prostatectomy or radiotherapy) with normal prostate-specific antigen, and not requiring ongoing antiandrogen hormonal therapy Presence of active 2nd malignancy requiring treatment; 2nd malignancies with low activity which do not require treatment (i.e. low grade prostate cancer, basal cell or squamous cell skin cancer) do not constitute exclusions Subject has a prior history of other malignancies unless disease free for ? 5 years, except for basal cell or squamous cell carcinoma of the skin, carcinoma in situ of the cervix or breast, or localized prostate cancer with Gleason score < 7 with stable prostate specific antigen (PSA) levels. Diagnosis of any other malignancy within 2 years prior to enrollment. However, adequately treated basal cell or squamous cell skin cancer or non-invasive superficial bladder cancer or carcinoma in situ of the bladder, breast or cervix; or prostate cancer of low grade (Gleason ?6) or surveillance without any plans for treatment intervention (e.g., surgery, radiation, or castration) are allowed; Diagnosis of any other malignancy within 2 years prior to study enrollment, except for adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the breast, bladder, or cervix, or low-grade prostate cancer or other early-stage low-risk cancers. History of non-lymphoid malignancy except for the following:\r\n* Adequately treated local basal cell or squamous cell carcinoma of the skin, cervical carcinoma in situ, superficial bladder cancer, asymptomatic prostate cancer without known metastatic disease and with no requirement for therapy or requirement only hormonal therapy and with normal prostate specific antigen for > 1 year prior to the start of pembrolizumab, or any other cancer that has been in complete remission without treatment for ? 5 years prior to enrollment Any concomitant or prior invasive malignancies with the following curatively treated exceptions:\r\n* Treated limited stage basal cell or squamous cell carcinoma of the skin\r\n* Carcinoma in situ of the breast or cervix\r\n* Primary endometrial cancer meeting the following conditions: stage not greater than IA, grade 1 or 2, no more than superficial myometrial invasion, without vascular or lymphatic invasion; no poorly differentiated subtypes, including papillary serous/serous, clear cell, or other Federation of Gynecology and Obstetrics (FIGO) grade 3 lesions\r\n* Prior cancer treated with a curative intent with no evidence of recurrent disease 5 years following diagnosis and judged by the investigator to be at low risk of recurrence Other active malignancy (=< 3 years) prior to registration; exceptions: basal cell skin cancer or carcinoma-in-situ of the cervix or low-risk prostate cancer after curative therapy Patients with other malignancy within the last 3 years, other than curatively treated basal cell or squamous cell skin cancer, carcinoma in situ of the cervix, organ-confined or treated nonmetastatic prostate cancer with negative prostate-specific antigen, in situ breast carcinoma after complete surgical resection, or superficial transitional cell bladder carcinoma Patients with treated limited stage basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the breast or cervix are eligible; patients with stage IA endometrial cancer are eligible if the following conditions are met: without vascular or lymphatic invasion AND no serous, clear cell or grade 3 histology; patients with early stage I or II cancers treated with curative intent who have no evidence of recurrent cancer 3 years following diagnosis and judged by the investigator to be at low risk or recurrence are eligible Non-hematologic malignancy within the past 3 years aside from the following exceptions:\r\n* Adequately treated basal cell or squamous cell skin cancer\r\n* Carcinoma in situ of the cervix \r\n* Prostate cancer < Gleason grade 6 with a stable prostate-specific antigen test (PSA)\r\n* Successfully treated in situ carcinoma of the breast Participants with previous history of another malignant condition are excluded, except for localized cancers that have been adequately treated; this includes completely resected basal cell carcinoma or squamous cell carcinoma of the skin, in situ malignancy (e.g. ductal carcinoma in situ [DCIS] of the breast), good risk prostate cancer after curative therapy and/or considered appropriate for watchful waiting (e.g. Gleason 6 or less, T2 or less and prostate-specific antigen [PSA] < 10) , and stage I cervical cancer; if invasive malignancy was experienced 2 or more years ago and confirmed as cured, these participants may be considered for the study on case by case basis with PI discussion and approval Diagnosis of any other malignancy within 3 years prior to registration, except for adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the breast or of the cervix or melanoma in-situ or low grade (Gleason 6 or below) prostate cancer on surveillance with no plans for treatment intervention (eg, surgery, radiation or castration) Patients who have been diagnosed or treated for another malignancy within 3 years prior to registration are not eligible aside from these exceptions: completely resected basal cell carcinoma or squamous cell carcinoma of the skin, an in situ malignancy, or low-risk prostate cancer after curative therapy; if a patient had a prior MPN that evolved to a blast phase, but with treatment, reverted to myelofibrosis at the time of screening, these patients (pts) are considered eligible at the discretion of the principal investigator (PI), if not considered suitable for stem cell transplantation Participant has a history of other active malignancies, including myelodysplastic syndrome (MDS), within the past 3 years prior to study entry, with the following exceptions: Adequately treated in situ carcinoma of the cervix uteri or the breast, basal cell carcinoma of the skin or localized squamous cell carcinoma of the skin, prostate cancer Gleason grade 6 or lower AND with stable Prostate Specific Antigen (PSA) levels off treatment, previous malignancy with no evidence of disease confined and surgically resected (or treated with other modalities) with curative intent and unlikely to impact survival during the duration of the study Other malignancies within the past 3 years except for the following: adequately treated cervical or vulvar carcinoma in situ, treated basal cell or squamous carcinoma of the skin, superficial bladder tumors (Ta, Tis & T1), ductal carcinoma in situ (DCIS) of the breast and low grade prostate cancer; any cancer curatively treated > 3 years prior to entry with no clinical evidence of recurrence is permitted Subjects with a history of another primary malignancy =< 3 years ago, with the exception of inactive basal, squamous cell carcinoma of the skin or superficial melanoma only requiring excision, prostate cancer with a prostate specific antigen (PSA) that has not increased for at least 3 months, carcinoma in situ of the cervix Subject has a previous (within 5 years) or current malignancy other than the target cancer with the exception of curatively treated local tumors such as carcinoma in situ of the breast or cervix, basal or squamous cell carcinoma of the skin, or prostate cancer with Gleason Grade < 6 and prostate-specific antigen within normal range. Modifications to Eligibility Criteria for the following specific tumor types: Phase 2A will be limited to enrolling the following tumor types: Less than 2-year disease free from another primary malignancy (other than squamous or basal cell carcinoma of the skin, “in-situ” carcinoma of the cervix or breast, superficial bladder carcinoma, or previously treated localized prostate cancer with normal PSA levels); patients who have had completed all anti-cancer treatment for another primary malignancy more than 2 years prior to screening are eligible if they are not considered to have a “currently active” malignancy based on having less than a 30% risk of relapse Patients with treated limited stage basal cell or squamous cell carcinoma of the skin or carcinoma in situ of the breast or cervix are eligible; patients with stage IA endometrial cancer are eligible if the following conditions are met: without vascular or lymphatic invasion AND no serous, clear cell or grade 3 histology; patients with early stage I or II cancers treated with curative intent who have no evidence of recurrent cancer 3 years following diagnosis and judged by the investigator to be at low risk of recurrence are eligible Prior malignancies within the past 3 years with exception of adequately treated basal cell, squamous cell skin cancer, or thyroid cancer; carcinoma in situ of the cervix or breast; prostate cancer of Gleason grade 6 or less with stable prostate-specific antigen (PSA) levels Active cancer (either concurrent or within the last year of starting study treatment) that requires therapy (eg, surgical, chemotherapy, or radiation therapy), with the exception of adequately treated basal or squamous cell carcinoma of the skin, melanoma in-situ, carcinoma in-situ of the cervix or breast, or prostate carcinoma with a prostate-specific antigen value <0.2 ng/mL. Participants with any concomitant or prior invasive malignancies are ineligible with the following exceptions:\r\n* Treated limited-stage basal cell or squamous cell carcinoma of the skin\r\n* Carcinoma in situ of the breast or cervix\r\n* Primary endometrial cancer meeting the following conditions: stage not greater than IA, grade 1 or 2, no more than superficial myometrial invasion, without vascular or lymphatic invasion; no poorly differentiated subtypes, including papillary serous, clear cell, or other International Federation of Gynecology and Obstetrics (FIGO) grade 3 lesions\r\n* Prior cancer treated with curative intent with no evidence of recurrent disease 3 years following diagnosis and judged by the investigator to be at low risk of recurrence Patients with an active malignancy requiring treatment in the next 12 months (except for basal or squamous cell carcinoma, or in situ cancer of the cervix or breast, and asymptomatic prostate cancer) Diagnosis of any non-RCC malignancy occurring within 2 years prior to the date of randomization except for adequately treated basal cell or squamous cell skin cancer, or carcinoma in situ of the breast or of the cervix or low grade prostate cancer with no plans for treatment intervention Malignancy within 3 years before day 1, other than the trial indication multiple myeloma and excluding treated non-melanoma skin cancer, superficial bladder cancer, carcinoma in-situ of the cervix and prostate carcinoma ? Gleason Grade 6 with stable prostate specific antigen (PSA) levels History of other malignancy < 5 years with the exception of basal cell or squamous cell carcinoma of the skin treated with local resection only, limited stage prostate cancer treated with surgery or radiation therapy with currently undetectable prostate-specific antigen (PSA), or carcinoma in situ of the cervix EXPANSION COHORT ONLY: History of another malignancy within 3 years, except the following: cured basal/squamous cell carcinoma of the skin, excised carcinoma in situ of the cervix; a history of prostate cancer that was identified incidentally following cystoprostatectomy or cystectomy for bladder cancer is acceptable provided that that following criteria are met: \r\n* Stage T2N0M0 or lower \r\n* Gleason score =< 7 \r\n* Negative margins at surgery, and \r\n* PSA undetectable after surgery Active malignancy (except for RCC, definitively treated basal or squamous cell carcinoma of the skin, and carcinoma in-situ of the cervix or bladder) within the past 24 months. Subjects with history of localized & low risk prostate cancer are allowed in the study if they were treated with curative intent and there is no prostate specific antigen (PSA) recurrence within the past 5 years Malignancy within 3 years or active disease requiring treatment other than the target cancer. The exceptions are prostate cancer (Gleason grade < 6 with normalized PSA levels), treated in situ cervical, breast carcinoma, squamous or basal cell skin cancer. Past or current malignancy other than SCCHN, except for:\r\n* Cervical carcinoma stage 1B or less\r\n* Non-invasive basal cell and squamous cell skin carcinoma\r\n* Malignant melanoma with a complete response of a duration of > 10 years \r\n* Radically treated prostate cancer (prostatectomy or radiotherapy) with normal prostate specific antigen (PSA), and not requiring ongoing anti-androgen hormonal therapy\r\n* Other cancer diagnosis with a complete response of duration of > 5 years History of other malignancies within 5 years prior to enrollment except for tumors with a negligible risk for metastasis or death, such as adequately controlled basal cell carcinoma, squamous-cell carcinoma of the skin, carcinoma in situ of the cervix, early-stage bladder cancer, or low-grade endometrial cancer\r\n* Malignancies that have undergone a putative surgical cure (i.e., localized prostate cancer post-prostatectomy) within 5 years prior to enrollment may be discussed with the lead primary investigator Subjects with known history and treatment of malignancy at any site within 2 years of initial prostate cancer diagnosis; with the exception of basal cell carcinoma (BCC) History of incurable malignancy other than NSCLC within the 5 years prior to start of treatment, with the exceptions of adequately treated intraepithelial carcinoma of the cervix uteri; prostate carcinoma with a prostate-specific antigen value < 0.2 ng/mL; or basal or squamous-cell carcinoma of the skin Diagnosis of any other malignancy within 5 years prior to randomization, except for adequately treated basal cell or squamous cell skin cancer, carcinoma in situ of the breast or of the cervix, low grade prostate cancer on surveillance without any plans for treatment intervention, or prostate cancer that has been adequately treated with prostatectomy or radiotherapy and currently with no evidence of disease or symptoms. Prior malignancy, except for adequately treated basal cell or squamous cell carcinoma of the skin, or thyroid cancer; carcinoma in situ of the cervix or breast; prostate cancer of Gleason grade 6 or less with stable prostate-specific antigen (PSA) levels (gonadotropin-releasing hormone [GnRH] analogs or androgen receptor blockers acceptable); or other cancers from which the subject has been disease-free for at least five years Patients with a prior malignancy within the last 5 years (except for basal or squamous cell carcinoma, in situ cancer of the cervix, or early stage prostate or bladder carcinomas) Concomitant malignancies except carcinoma in situ, basal or squamous cell skin carcinoma; low grade prostate cancer treated with prostatectomy more than 10 years ago; early stage melanoma treated with complete surgical excision more than 5 years ago; carcinoma in situ of cervix treated with cone procedure more than 8 years ago History of any other prior lymphoid malignancy other than the registrational histology or any other non-lymphoid malignancy except for the following: adequately treated local basal cell or squamous cell carcinoma of the skin, cervical carcinoma in situ, superficial bladder cancer, asymptomatic prostate cancer without known metastatic disease and with no requirement for therapy or requiring only hormonal therapy and with normal prostate specific antigen for ? 1 year prior to the start of study drug, or any other cancer that has been in complete remission without treatment for ? 5 years prior to enrollment History of, or current brain metastasis. Any other malignancy within 5 years prior to randomization with the exception of adequately treated in situ carcinoma of the cervix, uteri, or non-melanomatous skin cancer (all treatment of which should have been completed 6 months prior to enrollment), in situ squamous cell carcinoma of the breast, or incidental prostate cancer. Previous or current malignancies of other histologies within the last 3 years (yrs) prior to randomization; with the exception of cervical cancer in situ, adequately treated basal cell or squamous cell carcinoma of skin or treated low risk prostate cancer Second malignancy within past three years except adequately treated basal or squamous cell skin cancer, carcinoma in situ of the cervix, prostate cancer < Gleason score 6 with stable prostate-specific antigen (PSA) over the past three months, breast cancer in situ with full surgical resection, treated medullary or papillary thyroid cancer Patient has a history of other malignancies unless has undergone definitive treatment more than 5 yrs prior to study and without evidence of recurrent malignant disease (excluding basal cell carcinoma of the skin; superficial carcinoma of the bladder; carcinoma of the prostate with a current prostate-specific antigen <0.1 ng/mL; or cervical intraepithelial neoplasia). Another primary malignancy (other than squamous cell and basal cell carcinoma of the skin, in situ carcinoma of the cervix, or treated prostate cancer with a stable prostate specific antigen [PSA]) for which the patient has not been disease free for at least 3 years History of other malignancy unless the malignancy has been in remission without treatment for >/=2 years prior to enrolment, and except for carcinoma in situ of the cervix, basal or squamous cell skin cancer, surgically treated low-grade prostate cancer, or ductal carcinoma in situ (DCIS) of the breast treated with lymphectomy alone Second primary malignancy (except in situ carcinoma of the cervix or adequately treated nonmelanomatous carcinoma of the skin or other malignancy treated at least 3 years previously with no evidence of recurrence; prior low grade [Gleason score less than 6] localized prostate cancer is allowed). Subjects with a history of prior malignancy other than HL, NHL, or MM that have not been in remission for >5 years, with the exception of basal cell or squamous cell carcinoma, cervical carcinoma in situ on biopsy, or localized prostate cancer (Gleason score <5) History of active malignancy in the past 2 years (excluding basal/squamous cell skin cancer or prostate cancer with a Gleason score 6 or less) History of active malignancy within the past 5 years (excluding basal/squamous cell skin cancer or prostate cancer with a Gleason score 6 or less) Active malignancy within the past 5 years (excluding HCC, basal/squamous cell skin cancer, or prostate cancer with a Gleason score 6 or less) Malignancies other than ACC, non-urothelial bladder/upper tract cancer, nonadenocarcinoma prostate cancer, penile cancer or treatment refractory germ-cell tumor within 5 years of first study treatment with the exception of those with negligible risk of metastases or death and/or treated with expected curative outcome (carcinoma in situ of the cervix, basal or squamous cell skin cancer, localized prostate cancer for patients with malignancies other than non-adenocarcinoma of the prostate, ductal carcinoma in situ of the breast, non muscle invasive urothelial carcinoma of the bladder for patients with malignancies other than non-urothelial bladder cancer)