Patient is currently receiving any of the following medications and cannot be discontinued 7 days prior to enrollment:\r\n* Known strong and moderate inducers or inhibitors of CYP3A4/5, including enzyme inducing anti-convulsant drugs (EIACDs), grapefruit, grapefruit hybrids, pummelos, star-fruit, and Seville oranges\r\n* Substrates of CYP3A4/5 with a narrow therapeutic index\r\n* Herbal preparations/medications (except for vitamins) including, but not limited to: St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, black cohosh and ginseng; patients should stop using all herbal medications and dietary supplements at least 7 days prior to enrollment Participants cannot take any herbal preparations/medications on study or within 7 days prior to first dose of study drug, including but not limited to: St. John‘s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, ginseng Herbal preparations/medications. These herbal medications include, but are not limited to: St. John's wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng. Herbal preparations are not allowed throughout the study; these herbal medications include but are not limited to: St. John's wort, kava, ephedra (ma hung), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto and ginseng; patients should stop using these herbal medications 7 days prior to study enrollment Herbal preparations/medications are not allowed throughout the study, including but not limited to St. John's Wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone, yohimbe, saw palmetto, and ginseng. Patients should stop using these herbal medications 7 days prior to the first dose of AZD4635. Patients receiving any medications or substances that are inhibitors or inducers of CYP3A4, or CYP3A4 substrates need to be reviewed by the principal investigator; continuation of such medications will be at the discretion of the principal investigator; concomitant use of aprepitant or fosaprepitant is prohibited; as grapefruit and Seville oranges are known to contain moderate inhibitors of CYP3A4, these fruits or their products (including marmalade, juice, etc.) should be avoided while taking AZD1775; the use of sensitive substrates of CYP3A4, such as atorvastatin, simvastatin and lovastatin, is also prohibited in this study; herbal preparations are not allowed throughout the study; these herbal medications include but are not limited to: St. John's wort, kava, ephedra (mahung), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto and ginseng Use of herbal preparations/medications (including, but not limited to: St. John’s Wort, Kava, ephedra (ma huang), gingko bilboa, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng within 7 days prior to first dose Herbal preparations are not allowed throughout the study; these herbal medications include, but are not limited to: St. John’s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), Gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450, family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Current use of herbal preparations/medications, including but not limited to: St. John’s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, ginseng; participants should stop using these herbal medications 7 days prior to planned start of study treatment Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the CYP3A inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Herbal preparations are not allowed throughout the study; these herbal medications include but are not limited to: St. John's wort, kava, ephedra (ma hung), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto and ginseng; patients should stop using these herbal medications 7 days prior to first dose of study treatment Herbal preparations are not allowed throughout the study. These herbal medications include but are not limited to: St. John's wort, kava, ephedra (mahung), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto and ginseng. Patients should stop using these herbal medications 7 days prior to first dose of study treatment. Current use of herbal preparations/medications, including but not limited to: St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, ginseng. Participants should stop using these herbal medications 7 days prior to first dose of study drug Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John's wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450, family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Patient must not be taking any herbal supplements during the study (including but not limited to St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng); if a potential patient is taking any herbal supplements, s/he must discontinue prior to beginning study treatment Willing to discontinue all herbal preparations/medications at least 7 days prior to the first dose of study drug and throughout the study; these include, but not limited to, St. John's wort, Kava, ephedra (ma huang), ginkgo biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450 subfamily 3A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Patients who have taken herbal medications and certain fruits within 7 days prior to study enrollment are not eligible; herbal medications include, but are not limited to, St John‘s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, tangelos and ginseng; exclusionary fruits include the cytochrome P450 family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Willing to discontinue all herbal preparations/medications at least 7 days prior to the first dose of study drug and throughout the study; these include, but are not limited to, St. John's wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450, family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pomelos, or exotic citrus fruits Patients who have received herbal medications =< 2 weeks prior to study entry; herbal medications include, but are not limited to: St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng Concomitant use of herbal medications (i.e. St. John’s wort, Kava, ephedra [ma huang], gingko biloba) at least 7 days prior to the first dose of study drug and throughout participation in the trial Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s Wort, Kava, and ephedra (ma huang), dehydroepiandrosterone (DHEA), gingko biloba, yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450, family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Taking herbal medications and certain fruits and juices within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits and juice include the cytochrome P450 3A4 (CYP3A) inhibitors: Seville oranges, grapefruit, and pomelos Current use of or anticipated requirement during the study of prohibited medication(s) (any investigational drug(s), Other anti-cancer therapy (chemotherapy, radiation therapy, immunotherapy, biologic therapy, or hormone therapy other than for replacement), AR antagonists (e.g., bicalutamide, flutamide, nilutamide), 5-alpha reductase inhibitors (e.g., finasteride, dutasteride), Androgens (e.g., testosterone, dihydroepiandrosterone), Herbal medication(s) that may affect PSA levels (e.g., saw palmetto), Other herbal medications including, but not limited to: St. John's wort, kava, ephedra (ma huang), gingko biloba, yohimbe and ginseng) Patients who have taken herbal medications and certain fruits within 7 days prior to starting study drug; herbal medications include, but are not limited to St. John’s wort, Kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; fruits include the cytochrome P450, family 3, subfamily A (CYP3A) inhibitors Seville oranges, grapefruit, pummelos, or exotic citrus fruits Patients may not use natural herbal products or other “folk remedies” while participating in this study; herbal medications include, but are not limited to St. John’s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng Herbal preparations are not allowed throughout the study; these herbal medications include, but are not limited to: St. John’s wort, kava, ephedra (ma huang), gingko biloba, dehydroepiandrosterone (DHEA), yohimbe, saw palmetto, and ginseng; not willing to avoid grapefruit, grapefruit juices, grapefruit hybrids, Seville oranges, pummelos, and exotic citrus fruits from 14 days prior to the dose of study medication and during the entire study due to potential CYP3A4 interaction with the study medication; orange juice is allowed Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, cannabis, S. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto or ginseng)\r\n* Raloxifene is allowed for patients taking it for bone health Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* Concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)\r\n* Anticoagulants or antiplatelet agents except for low-dose, 81 mg aspirin Current use of a prohibited medication. The following medications or non-drug therapies are prohibited\r\n* Other anti-cancer therapy while on study treatment. (note: megestrol [Megace] if used as an appetite stimulant is allowed).\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy. Prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis.\r\n* Because the composition, PK, and metabolism of many herbal supplements are unknown, the concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng).\r\n* Patients receiving any medications or substances that are strong inhibitors or inducers of CYP3A or CYP2C8 are ineligible. Current use of, or intended ongoing treatment with: herbal remedies (e.g., St. John’s wort), or strong inhibitors or inducers of P-glycoprotein (Pgp) or breast cancer resistance protein 1 (Bcrp1) should also be excluded. Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John's wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (Note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study; (note: megestrol [Megace] if used as an appetite stimulant is allowed; thyroid-stimulating hormone [TSH] suppressive therapy is also allowed; palliative radiation therapy to non-target lesions is also allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* Concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)\r\n* Current use of a prohibited medication; patients receiving any medications or substances that are strong inhibitors or inducers of CYP3A or CYP2C8 are ineligible; current use of, or intended ongoing treatment with: herbal remedies (e.g., St. John’s wort), or strong inhibitors or inducers of P-glycoprotein (Pgp) or breast cancer resistance protein 1 (Bcrp1) should also be excluded Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)\r\n* The following concomitant medications are not allowed during navitoclax administration: warfarin, clopidogrel (Plavix), ibuprofen, tirofiban (Aggrastat), and other anticoagulants, drugs, or herbal supplements that affect platelet function are excluded, with the exception of low-dose anticoagulation medications (such as heparin) that are used to maintain the patency of a central intravenous catheter; aspirin will not be allowed within 7 days prior to the first dose of navitoclax or during navitoclax administration; however, subjects who have previously received aspirin therapy for thrombosis prevention may resume a low dose (i.e., maximum 100 mg QD) of aspirin if platelet counts are stable (>= 50,000/mm^3) through 6 weeks of navitoclax administration; all decisions regarding treatment with aspirin therapy will be determined by the investigator in conjunction with the medical monitor Concurrent investigational agent or anticancer therapy\r\n* Note: megestrol [Megace] if used as an appetite stimulant is allowed\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited: the concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to enrollment; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* Concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s Wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) PRIOR/CONCURRENT THERAPY CRITERIA: The concurrent use of all herbal supplements is prohibited during the study (including but not limited to St. John’s Wort, kava, ephedra [ma huang], ginko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Patients may not be receiving any other anti-cancer or investigational agents\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited: a) other anti-cancer therapy while on study treatment, b) the concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng) Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment\r\n* Prophylactic use of bisphosphonates in patients without bone disease, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, cannabis, St. John’s wort, kava, ephedra [ma huang], ginkgo biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)\r\n* Raloxifene is allowed for patients taking it for bone health Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment (megestrol if used as an appetite stimulant is allowed)\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, yohimbe, saw palmetto, or ginseng)\r\n* Patients receiving strong inhibitors or inducers of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) are ineligible Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (Note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* The concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)\r\n** Note: for proliferative disease, hydroxyurea will be allowed during weeks 1 and 2 of cycle 1 of study; hydroxyurea may be started or the dose changed during that 2-week period if it is clinically indicated; if a subject not previously on a stable dose of hydroxyurea needs to begin hydroxyurea or a subject on a stable dose needs to have their dose increased during the first 2 weeks, the investigator will notify the clinical team that this has been initiated Current use of a prohibited medication; the following medications or non-drug therapies are prohibited:\r\n* Other anti-cancer therapy while on study treatment; (note: megestrol [Megace] if used as an appetite stimulant is allowed)\r\n* Concurrent treatment with bisphosphonates is permitted; however, treatment must be initiated prior to the first dose of study therapy; prophylactic use of bisphosphonates in patients without bone disease is not permitted, except for the treatment of osteoporosis\r\n* Concurrent use of all herbal supplements is prohibited during the study (including, but not limited to, St. John’s wort, kava, ephedra [ma huang], gingko biloba, dehydroepiandrosterone [DHEA], yohimbe, saw palmetto, or ginseng)