Concomitant use of known potent cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors such as ketoconazole, itraconazole, ritonavir, indinavir, saquinavir, telithromycin, clarithromycin and nelfinavir Patients must not be receiving any of the following potent CYP3A4 inducers or inhibitors: erythromycin, clarithromycin, ketoconazole, azithromycin, itraconazole, grapefruit juice or St. John’s wort Co-administration with strong CYP3A4 inducers (e.g., phenytoin, rifampin, carbamazepine, St John’s Wort, bosentan, efavirenz, etravirine, modafinil, and nafcillin), strong CYP3A4 inhibitors (e.g., clarithromycin, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, verapamil, and voriconazole), and CYP3A4 substrates (e.g., alfentanil, cyclosporine, dihydroergotamine, ergotamine, everolimus, fentanyl, pimozide, quinidine, sirolimus and tacrolimus) Antifungals: itraconazole, ketoconazole, fluconazole (doses > 200 mg/day), voriconazole The participant requires concomitant treatment with the following inhibitors of CYP3A4:\r\n* Antibiotics: clarithromycin, erythromycin, telithromycin, troleandomycin\r\n* Antifungals: itraconazole, ketoconazole, voriconazole, fluconazole, posaconazole\r\n* Antidepressants: nefazodone\r\n* Antidiuretic: conivaptan\r\n* Gastrointestinal (GI): cimetidine, aprepitant\r\n* Hepatitis C: boceprevir, telaprevir\r\n* Miscellaneous: Seville oranges, grapefruit, or grapefruit juice and/or pummelos, star fruit, exotic citrus fruits, or grapefruit hybrids); use of any of anti-retrovirals (delavirdine) or protease inhibitors (ritonavir, indinavir, lopinavir/ritonavir, saquinavir, nelfinavir) is permitted; specifically, ritonavir and cobicistat is permitted for participants considered for the CYP3A4-inhibitor based ART regimen arm (Stratum A) of the trial; as part of the enrollment/informed consent procedures, the participant will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the participant is considering a new over-the-counter medicine or herbal product Subjects who are currently receiving therapy with a potent cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inducer or inhibitor (e.g. clarithromycin, telithromycin, nefazodone, itraconazole, ketoconazole, atazanavir) Current use of any of the following medications: boceprevir, carbamazepine, ciprofloxacin, cobicistat, conivaptan, enzalutamide, fluvoxamine, itraconazole, ketoconazole, mitotane, phenytoin, posaconazole, rifampin, ritonavir, St. John’s Wort, telaprevir, voriconazole, or zafirlukast Currently taking a strong CYP3A inhibitors that cannot be discontinued prior to trial enrollment and for the duration of trial. This includes but is not is limited to: boceprevir clarithromycin, conivaptan, grapefruit juice, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir. Current use or anticipated inability to avoid use of drugs that are known strong CYP3A4/5 inhibitors (atazanavir, boceprevir, conivaptan, clarithromycin, grapefruit or grapefruit juice, indinavir, itraconazole, ketoconazole, nelfinavir, nefazodone, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, voriconazole) Concomitant medications, any of the following should be considered for exclusion: strong CYP3A4 inhibitors: (Patients must discontinue drug 7 days prior to starting ruxolitinib), including but not limited to boceprevir, clarithromycin, conivaptam, indinavir, itraconazole, ketoconazole, lopinavir, mibefradil, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, or voriconazole; in addition, patients will be instructed to avoid grapefruit or grapefruit juice, starfruit, or Seville oranges Concurrent use of any medications or substances; these include steroids as they may interfere with PF-04518600 (OX40 Ab); also strong CYP3A4/5 inhibitors should be avoided (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, and voriconazole) Patients receiving any medications or substances that are inhibitors or inducers of CYP3A4 are ineligible; the subject requires concomitant treatment with the following inhibitors of CYP3A4:\r\n* Antibiotics: clarithromycin, erythromycin, telithromycin, troleandomycin; specifically, clarithryomycin is permitted for patients considered for this trial\r\n* Antifungals: itraconzaole, ketoconazole, voriconazole, fluconazole, posaconazole\r\n* Antidepressants: nefazodone\r\n* Antidiuretic: conivaptan\r\n* Antiretrovirals: delaviridine or protease inhibitors (ritonavir, indinavir, lopinavir/ritonavir, saquinavir, nelfinavir) or cobicistat-boosted antiretrovirals\r\n* Gastrointestinal (GI): cimetidine, aprepitant\r\n* Hepatitis C: boceprevir, telaprevir\r\n* Miscellaneous: Seville oranges, grapefruit, or grapefruit juice and/or pummelos, star fruit, exotic citrus fruits, or grapefruit hybrids) The subject requires chronic concomitant treatment of strong cytochrome P450, family 3, subfamily A polypeptide 4 (CYP3A4) inducers (e.g., dexamethasone, phenytoin, carbamazepine, rifampin, rifabutin, rifapentine, phenobarbital, and St. John’s Wort); the subject requires chronic concomitant treatment of strong CYP3A4 inhibitors (e.g., indinavir, nelfinavir, ritonavir, clarithromycin, itraconazole, ketoconazole, nefazodone, saquinavir, telithromycin, aprepitant, erythromycin, fluconazole, grapefruit juice, verapamil, diltiazem, cimetidine, amiodarone, chloramphenicol, boceprevir, ciprofloxacin, delavirdine, diethyl-dithiocarbamate, fluvoxamine, gestodene, imatinib, mibefradil, mifepristone, norfloxacin, norfluoxetine, starfruit, telaprevir, voriconazole); as part of the enrollment/informed consent procedures, the patient will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the patient is considering a new over-the-counter medicine or herbal product Patients require chronic concomitant treatment of strong CYP450 3A4 inducers (e.g. dexamethasone, phenytoin, carbamazepine, rifampicin, rifabutin, rifapentine, phenobarbital, St. John’s wort) or inhibitors (eg. ketoconazole, miconazole, itraconazole, voriconazole, posaconazole, clarithromycin, telithromycin, indinavir, saquinavir, ritonavir, nelfinavir, amprenavir, fosamprenavir nefazodone, lopinavir, troleandomycin, mibefradil and conivaptan) Patients must stop taking ritonavir, idinavir, saquinavir, telithromycin, clarithromycin and nelfinavir 1 week prior to registration; Note: topical ketoconazole is permitted Patients must stop taking phenytoin, rifampicin, rifapentine, rifabutin, carbamazepine, nevirapine, modafinil and St John’s wort (hypericum perforatum) 3 weeks prior to registration; patients must stop taking phenobarbitone 5 weeks prior to registration; patients must stop taking all strong CYP3A4 inhibitors, including clarithromycin, telithromycin, nefazodone, itraconazole, ketoconazole, atazanavir, darunavir, indinavir, lopinavir, nelfinavir, ritonavir, saquinavir, and tipranavir, prior to registration Concomitant medications: the following medicines should be avoided on this study:\r\n* Inhibitors: ketoconazole and other imidazole antifungals, erythromycin, fluoxetine, gemfibrozil, cimetidine, ritonavir, saquinavir, indinavir, and nelfinavir\r\n* Inducers: rifampicin, carbamazepine, phenytoin, efavirenz, and nevirapine\r\n* Patients receiving any of the above medications are ineligible Current use or anticipated inability to avoid use of drugs that are known strong cytochrome P450 family 3 subfamily A member 4/5 (CYP3A4/5) inhibitors (atazanavir, boceprevir, conivaptan, clarithromycin, grapefruit or grapefruit juice, indinavir, itraconazole, ketoconazole, nelfinavir, nefazodone, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, voriconazole) The use of strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors, including: itraconazole, clarithromycin, erythromycin, diltiazem, verapamil, delavirdine, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole, grapefruit juice (or grapefruits)\r\n* Note: If a patient is on a strong CYP3A4 inhibitor, they can be reconsidered for enrollment if they can safely stop said medication; a two week or 5 half-lives, whichever is longer, washout will be required prior to enrolling on study; subject may not resume medication while receiving apalutamide Subjects taking the following are not eligible:\r\n* Carbamazepine (e.g., Tegretol)\r\n* Rifabutin (e.g., Mycobutin) or\r\n* Rifampin (e.g., Rifadin)\r\n* Rifapentine (e.g., Priftin)\r\n* St. John's wort\r\n* Clarithromycin (e.g., Biaxin)\r\n* Cyclosporine (e.g. Neoral or Sandimmune)\r\n* Diltiazem (e.g., Cardizem)\r\n* Erythromycin (e.g., Akne-Mycin, Ery-Tab)\r\n* Itraconazole (e.g., Sporanox)\r\n* Ketoconazole (e.g., Nizoral)\r\n* Telithromycin (e.g., Ketek)\r\n* Verapamil (e.g., Calan sustained release [SR], Isoptin, Verelan)\r\n* Voriconazole (e.g., VFEND)\r\n• Tacrolimus (e.g. Prograf) Subjects taking fluconazole, voriconazole, itraconazole, posaconazole, and ketoconazole within 72 hours of study drug starting are not eligible; reinstitution of fluconazole, voriconazole, itraconazole, posaconazole, ketoconazole and diltiazem is permissible 72 hours after the last dose of sirolimus Present use or anticipated need for cytochrome P450 (CYP) family 3, subfamily A, polypeptide 4 (3A4)-inhibiting, CYP3A4-inducing drugs (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, and voriconazole, rifampin, phenytoin, carbamazepine, rifabutin, rifapentine, phenobarbital, and St. John's wort, bosentan, efavirenz, etravirine, modafinil, and nafcillin) Patients receiving concomitant treatment with strong cytochrome P450 family 3 subfamily A member 4 (CYP3A4) inhibitors, unless such drugs are considered critical for the well being of the patient and not adequate alternatives are available; strong CYP3A4 inhibitors include the following medications: itraconazole, ketoconazole, miconazole, voriconazole; amprenavir, atazanavir, fosamprenavir, indinavir, nelfinavir, ritonavir; ciprofloxacin, clarithromycin, diclofenac, doxycycline, enoxacin, isoniazid, ketamine, nefazodone, nicardipine, propofol, quinidine, telithromycin Caution should be exercised when administering paclitaxel (Taxol) concomitantly with medicines known to inhibit (e.g. ketoconazole and other imidazole antifungals, erythromycin, fluoxetine, gemfibrozil, cimetidine, ritonavir, saquinavir, indinavir and nelfinavir) OR induce (e.g. rifampicin, carbamazepine, phenytoin, efavirenz and nevirapine) either CYP2C8 or CYP3A4. Concomitant use of known CYP3A4 inhibitors such as ketoconazole, itraconazole, ritonavir, indinavir, saquinavir, telithromycin, clarithromycin and nelfinavir Treatment with p-glycoprotein inhibitors such as cyclosporine A, elacridar, ketoconazole, ritonavir, saquinavir. Patients may not take any of the following medications while on study, but will be considered eligible if medication is discontinued 72 hours prior to first dose of sirolimus:\r\n* Carbamazepine (e.g. Tegretol)\r\n* Rifabutin (e.g. Mycobutin)\r\n* Rifampin (e.g. Rifadin)\r\n* Rifapentine (e.g. Priftin)\r\n* St. John’s wort\r\n* Clarithromycin (e.g. Biaxin)\r\n* Cyclosporine e.g. (Neoral or Sandimmune)\r\n* Diltiazem (e.g. Cardizem)\r\n* Erythromycin (e.g. Akne-Mycin, Ery-Tab)\r\n* Itraconazole (e.g. Sporanox)\r\n* Fluconazole (e.g. Diflucan)\r\n* Ketoconazole (e.g. Nizoral)\r\n* Telithromycin (e.g. Ketek)\r\n* Verapamil (e.g. Calan SR, Isoptin, Verelan)\r\n* Voriconazole (e.g. VFEND) - can take 72 hours after last dose of sirolimus\r\n* Tacrolimus (e.g. Prograf) Subject is receiving potent inhibitors of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4); for such medications, a wash-out period of >= 7 days is required prior to starting dasatinib unless discontinuation or substitution of such an inhibitor is not in the best interest of the patient as determined by the investigator; these include the following medications: itraconazole, ketoconazole, miconazole, voriconazole; amprenavir, atazanavir, fosamprenavir, indinavir, nelfinavir, ritonavir; ciprofloxacin, clarithromycin, diclofenac, doxycycline, enoxacin, isoniazid, ketamine, nefazodone, nicardipine, propofol, quinidine, telithromycin; in instances where use of these agents is felt to be required for the best management of the patients, inclusion of such a patients should be discussed with principal investigator (PI) and the rationale documented Concomitant use of potent inhibitors of CYP 3A4 including ketoconazole, itraconazole and ritonavir. Consumption of grapefruit juice should also be avoided. Current use or anticipated need for treatment with drugs or foods that are known strong CYP3A4/5 inhibitors including but not limited to atazanavir, clarithromycin, indinavir, itraconazole, ketoconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, and grapefruit or grapefruit juice; the topical use of these medications (if applicable), such as 2% ketoconazole cream, is allowed Patients chronically receiving drugs that are known strong cytochrome P450, family 3, subfamily A, polypeptide 4/5 (CYP3A4/5) inhibitors within 7 days prior to study enrollment, including but not limited to ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole, grapefruit, and grapefruit juice are not eligible Receiving any medications or substances that are strong or moderate inhibitors of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) (indinavir, nelfinavir, atazanavir, ritonavir, clarithromycin, itraconazole, voriconazole, ketoconazole, nefazodone, saquinavir, telithromycin, aprepitant, erythromycin, fluconazole, grapefruit juice, verapamil, diltiazem); use of the aforementioned strong or moderate inhibitors is prohibited < 7 days prior to registration Patient cannot be taking strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors such as:\r\n* Antibiotics: clarithromycin, telithromycin, troleandomycin\r\n* Human immunodeficiency virus (HIV) antiviral protease inhibitors: ritonavir, indinavir, saquinavir, nelfinavir, amprenavir, lopinavir\r\n* Antifungals: itraconazole, ketoconazole, voriconazole, fluconazole\r\n* Antidepressants: nefazodone Subject is taking ketoconazole, voriconazole, itraconazole, erythromycin, telithromycin, clarithromycin, rifampin, rifabutin, bromocriptione, cimetidine, cisapride, clotrimazole, danazol, diltiazem, fluconazole, protease inhibitors (e.g., human immunodeficiency virus [HIV] and hepatitis C that include drugs such as ritonavir, indinavir, boceprevir, and telaprevir), metoclopramide, nicardipine, troleandomycin, verapamil, carbamazepine, phenobarbital, phenytoin, rifapentine, St. John’s wort (hypericum perforatum), and grapefruit juice; patients on metformin will not be excluded Avoid the use of strong CYP3A/PgP inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, nefazodone, saquinavir, telithromycin, ritonavir, indinavir, nelfinavir, voriconazole). Patients receiving potent cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) (such as but not limited to boceprevir, clarithromycin, conivaptan, grapefruit juice, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, mibefradil, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, voriconazole) inhibitors will be excluded from the study Patients must not be receiving any of the following potent cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inducers or inhibitors: erythromycin, clarithromycin, azithromycin, ketoconazole, itraconazole, voriconazole, posaconazole, grapefruit juice or St. John’s wort The patient requires treatment with a medication that is a strong inhibitor of CYP3A4 (boceprevir, clarithromycin, conivaptan, grapefruit juice, indinavir, itraconazole, ketoconazole, lopinavir/ritonavir, mibefradil, nefazodone, nelfinavir, posaconazole, ritonavir, saquinavir, telaprevir, telithromycin, or voriconazole). Patients currently receiving treatment with strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors and treatment that cannot be either discontinued or switched to a different medication prior to starting study drug; patients receiving any medications or substances that are strong inhibitors of CYP3A4; all azoles but fluconazole are discouraged to be used in patients requiring treatment with antifungal antibiotics; use of the following strong inhibitors is prohibited =< 7 days prior to registration\r\n* Strong inhibitors of CYP3A4/5; > 5-fold increase in the plasma area under the curve (AUC) values or more than 80% decrease in clearance\r\n** Boceprevir (Victrelis)\r\n** Clarithromycin (Biaxin, Biaxin XL)\r\n** Conivaptan (Vaprisol)\r\n** Indinavir (Crixivan)\r\n** Itraconazole (Sporanox)\r\n** Ketoconazole (Nizoral)\r\n** Lopinavir/Ritonavir (Kaletra)\r\n** Mibefradil\r\n** Nefazodone (Serzone)\r\n** Nelfinavir (Viracept)\r\n** Posaconazole (Noxafil)\r\n** Ritonavir (Novir, Kaletra)\r\n** Saquinivir (Fortovase, Invirase)\r\n** Telaprevir (Incivek)\r\n** Telithromycin (Ketek)\r\n** Voriconazole (Vfend)\r\n** Troleandomycin\r\n** Cobicistat\r\n** Tipranavir Subjects taking the following are not eligible: \r\n* Carbamazepine (e.g., Tegretol) \r\n* Rifabutin (e.g., Mycobutin) or \r\n* Rifampin (e.g., Rifadin) \r\n* Rifapentine (e.g., Priftin) \r\n* St. John's wort \r\n* Clarithromycin (e.g., Biaxin) \r\n* Cyclosporine (e.g. Neoral or Sandimmune) \r\n* Diltiazem (e.g., Cardizem) \r\n* Erythromycin (e.g., Akne-Mycin, Ery-Tab) \r\n* Itraconazole (e.g., Sporanox) \r\n* Ketoconazole (e.g., Nizoral) \r\n* Telithromycin (e.g., Ketek) \r\n* Verapamil (e.g., Calan SR, Isoptin, Verelan) \r\n* Voriconazole (e.g., VFEND) \r\n* Tacrolimus (e.g. Prograf)\r\n* Subjects taking fluconazole, voriconazole, itraconazole, posaconazole, and ketoconazole within 72 hours of study entry are not eligible; reinstitution of fluconazole, voriconazole, itraconazole, posaconazole, ketoconazole and diltiazem is permissible 72 hours after the last dose of sirolimus Patients currently receiving treatment with strong CYP3A4 inhibitors and treatment that cannot be either discontinued or switched to a different medication prior to starting study drug; patients receiving any medications or substances that are strong or moderate inhibitors of CYP3A4\r\n* Use of the following strong or moderate inhibitors is prohibited =< 7 days prior to registration; concurrent use is not allowed simultaneously with nilotinib during the study\r\n** Strong inhibitors of CYP3A4/5 > 5-fold increase in the plasma area under the curve (AUC) values or more than 80% decrease in clearance\r\n*** Boceprevir (Victrelis)\r\n*** Clarithromycin (Biaxin, Biaxin XL)\r\n*** Conivaptan (Vaprisol)\r\n*** Grapefruit juice\r\n*** Indinavir (Crixivan)\r\n*** Itraconazole (Sporanox)\r\n*** Ketoconazole (Nizoral)\r\n*** Lopinavir/ritonavir (Kaletra)\r\n*** Mibefradil\r\n*** Nefazodone (Serzone)\r\n*** Nelfinavir (Viracept)\r\n*** Posaconazole (Noxafil)\r\n*** Ritonavir (Novir, Kaletra)\r\n*** Saquinivir (Fortovase, Invirase)\r\n*** Telaprevir (Incivek)\r\n*** Telithromycin (Ketek)\r\n*** Voriconazole (Vfend)\r\n** Moderate inhibitors of CYP3A4/5 > 2-fold in the plasma AUC values or 50-80% decrease in clearance\r\n*** Amprenavir (Agenerase)\r\n*** Aprepitant (Emend)\r\n*** Atazanavir (Reyataz)\r\n*** Ciprofloxacin (Cipro)\r\n*** Darunavir (Prezista)\r\n*** Diltiazem (Cardizem, Cardizem CD, Cardizem LA, Cardizem SR, Cartia XT, Dilacor XR, Diltia XT, Taztia XT, Tiazac)\r\n*** Erythromycin (Erythrocin, E.E.S. , Ery-Tab, Eryc, EryPed, PCE)\r\n*** Fluconazole (Diflucan)\r\n*** Fosamprenavir (Lexiva)\r\n*** Imatinib (Gleevec)\r\n*** Verapamil (Calan, Calan SR, Covera-HS, Isoptin SR, Verelan, Verelan PM) Concurrent treatment with strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole, grapefruit juice) or inducers (e.g., dexamethasone, phenytoin, carbamazepine, rifampin, rifabutin, rifapentin, phenobarbital, St. John's Wort) Patient must not be receiving any medication that is a strong cytochrome P450 3A4 (CYP3A4) inhibitor beginning 14 days prior to first dose of study drug; strong CYP3A4 inhibitors include (but are not limited to): antibiotics such as clarithromycin, telithromycin, troleandomycin; protease inhibitors such as ritonavir, indinavir, saquinavir, nelfinavir, lopinavir; antifungals such as itraconazole, ketoconazole, voriconazole; and antidepressants such as nefazodone Receiving any medications or substances that are strong or moderate inhibitors of CYP3A4; use of the following strong or moderate inhibitors are prohibited =< 7 days prior to randomization:\r\n* Strong inhibitors of CYP3A4: indinavir (Crixivan), nelfinavir (Viracept), atazanavir (Reyataz), ritonavir (Norvir), clarithromycin (Biaxin, Biaxin XL), itraconazole (Sporanox), ketoconazole (Nizoral), nefazodone (Serzone), saquinavir (Fortovase, Invirase), telithromycin (Ketek)\r\n* Moderate inhibitors of CYP3A4: aprepitant (Emend), erythromycin (Erythrocin, E.E.S, Ery-Tab, Eryc, EryPed, PCE, fluconazole (Diflucan), grapefruit juice, verapamil (Calan, Calan SR, Covera-HS, Isoptin SR, Verelan, Verelan PM), diltiazem (Cardizem, Cardizem CD, Cardizem LA, Cardizem SR, Cartia XT, Dilacor XR, Diltia XT, Taztia XT, Tiazac) Patients must not be receiving any of the following potent CYP3A4 inducers or inhibitors: erythromycin, clarithromycin, ketoconazole, azithromycin, itraconazole, grapefruit juice or St. John’s wort Patients cannot have received cytochrome P450-inducing anticonvulsants (enzyme-inducing antiepileptic drugs [EIADs]; e.g., phenytoin, carbamazepine, phenobarbital, primidone, oxcarbazepine) or similar agents (e.g., rifampin) or P450 inhibiting agents (ketoconazole, itraconazole, clarithromycin, atazanavir, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, voriconazole) within 10 days prior to starting lapatinib Use of any strong CYP3A4 inhibitor such as ketoconazole, itraconazole, clarithromycin, ritonavir, indinavir, nelfinavir, or saquinavir (see Table 6 6) 14 days before the first dose of study drug or during the study Chronic concomitant use of strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole, clarithromycin, indinavir, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, and voriconazole). Concurrent use with strong inhibitors of CYP3A4 (e.g. clarithromycin, grapefruit juice, itraconazole, ketoconazole, nefazodone, posaconazole, telithromycin, and voriconazole) Patients currently receiving treatment with strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors who cannot discontinue such treatment or be switched to a different medication prior to starting study drug are excluded from study entry; strong CYP3A4 inhibitors include the following medications: itraconazole, ketoconazole, miconazole, voriconazole; amprenavir, atazanavir, fosamprenavir, indinavir, nelfinavir, ritonavir; ciprofloxacin, clarithromycin, diclofenac, doxycycline, enoxacin, isoniazid, ketamine, nefazodone, nicardipine, propofol, quinidine, telithromycin Concurrent use with strong inhibitors of CYP3A4 (e.g. clarithromycin, grapefruit juice, itraconazole, ketoconazole, nefazadone, posaconazole, telithromycin, and voriconazole) The following medications may not be taken within 24 hours of the first dose of study agent or at any time while a participant is taking study agent\r\n* Coumadin\r\n* Strong CYP3A4 inhibitors including ketoconazole, atazanavir, boceprevir, ceritinib, clarithromycin, cobicistat, darunavir, dasabuvir, idelalisib, indinavir, itraconazole, lopinavir, nefazodone, nelfinavir, ombitasvir, paritaprevir, posaconazole, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, and grapefruit or grapefruit juice\r\n* CYP3A4 inducers including rifampicin, rifabutin, rifapentine, phenytoin, carbamazepine, phenobarbital, primidone, enzalutamide, fosphenytoin, lumacaftor, mitotane, and St. John's wort\r\n* Agents which decrease gastric acid are allowed but should be avoided if possible\r\n* Participants may resume inhibitors or inducers of CYP3A4 > 14 days after their last dose of study agent The participant requires concomitant treatment with the following inhibitors of CYP3A4:\r\n* Antibiotics: clarithromycin, erythromycin, telithromycin, troleandomycin\r\n* Antifungals: itraconazole, ketoconazole, voriconazole, fluconazole, posaconazole\r\n* Antidepressants: nefazodone\r\n* Antidiuretic: conivaptan\r\n* Gastrointestinal (GI): cimetidine, aprepitant\r\n* Hepatitis C: boceprevir, telaprevir\r\n* Miscellaneous: Seville oranges, grapefruit, or grapefruit juice and/or pummelos, star fruit, exotic citrus fruits, or grapefruit hybrids); use of any of anti-retrovirals (delavirdine) or protease inhibitors (ritonavir, indinavir, lopinavir/ritonavir, saquinavir, nelfinavir) is permitted; specifically, ritonavir and cobicistat is permitted for participants considered for the CYP3A4-inhibitor based ART regimen arm (Stratum A) of the trial Concurrent use of:\r\n* Strong CYP3A4 inhibitors: including but not limited to ketoconazole, itraconazole, clarithromycin, atazanavir, nefazodone, saquinavir, telithromycin, ritonavir, amprenavir, indinavir, nelfinavir, delavirdine and voriconazole\r\n* Strong CYP3A4 inducers: including but not limited to rifampin, rifabutin, rifapentine, phenobarbital, phenytoin, carbamazepine, and St. John's wort\r\n* Therapeutic doses of anticoagulants (low dose warfarin up to 2 mg daily for DVT prophylaxis is permitted)\r\n* Grapefruit and grapefruit juice\r\n**(Note: Alternative therapies should be used when available; if use of a strong CYP3A4 inhibitor or inducer is necessary, this must be approved by the principal investigator and documented in source documents) Patients must not be receiving any of the following potent cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inducers or inhibitors: erythromycin, clarithromycin, ketoconazole, azithromycin, itraconazole, grapefruit juice or St. John's Wort Use of ketoconazole, itraconazole, ritonavir, cyclosporine, carbamazepine, phenytoin, phenobarbital within 2 weeks prior to and while on study therapy Use of the following strong inhibitors are prohibited =< 7 days prior to registration\r\n* Boceprevir (Victrelis™)\r\n* Clarithromycin (Biaxin®, Biaxin XL®)\r\n* Conivaptan (Vaprisol®)\r\n* Grapefruit juice\r\n* Indinavir (Crixivan®)\r\n* Itraconazole (Sporanox®)\r\n* Ketoconazole (Nizoral®)\r\n* Lopinavir/ritonavir (Kaletra®)\r\n* Mibefradil\r\n* Nefazodone (Serzone®)\r\n* Nelfinavir (Viracept®)\r\n* Posaconazole (Noxafil®)\r\n* Ritonavir (Norvir®)\r\n* Saquinavir (Invirase®)\r\n* Telaprevir (Incivek®)\r\n* Telithromycin (Ketek®) Receiving any medications or substances that are strong or moderate inhibitors of cytochrome P450 family 3, subfamily A, polypeptide 4 (CYP3A4); use of the following strong or moderate inhibitors are prohibited =< 7 days prior to registration\r\n* Strong inhibitors of CYP3A4:\r\n** > 5-fold increase in the plasma area under the curve (AUC) values or more than 80% decrease in clearance\r\n** Indinavir (Crixivan)\r\n** Nelfinavir (Viracept)\r\n** Atazanavir (Reyataz)\r\n** Ritonavir (Norvir)\r\n** Clarithromycin (Biaxin, Biaxin XL)\r\n** Itraconazole (Sporanox)\r\n** Ketoconazole (Nizoral)\r\n** Nefazodone (Serzone)\r\n** Saquinavir (Fortovase, Invirase)\r\n** Telithromycin (Ketek)\r\n* Moderate Inhibitors of CYP3A4\r\n** > 2-fold increase in the plasma AUC values or 50-80% decrease in clearance\r\n** Aprepitant (Emend)\r\n** Erythromycin (Erythrocin, E.E.S., Ery-Tab, Eryc, EryPed, PCE)\r\n** Fluconazole (Diflucan)\r\n** Grapefruit juice\r\n** Verapamil (Calan, Calan SR, Covera-HS, Isoptin SR, Verelan, Verelan PM)\r\n** Diltiazem (Cardizem, Cardizem CD, Cardizem LA, Cardizem SR, Cartia XT, Dilacor XR, Diltia XT, Taztia XT, Tiazac) Use of any of the following medications within the past 6 months: clarithromycin, telithromycin, chloramphenicol, itraconazole, nefazodone, cobicistat Patients on drugs with strong CYP 3A4 inhibitors within the previous two weeks (ketoconazole, clarithromycin, itraconazole, nefazodone, telithromycin) The subject requires concomitant treatment with the following inhibitors of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4):\r\n* Antibiotics: clarithromycin, erythromycin, telithromycin, troleandomycin\r\n* Antifungals: itraconzaole, ketoconazole, voriconazole, fluconazole, posaconazole\r\n* Antidepressants: nefazodone\r\n* Antidiuretic: conivaptan\r\n* Anti-retrovirals: delaviridine or protease inhibitors (ritonavir, indinavir, lopinavir/ritonavir, saquinavir, nelfinavir) or cobicistat-boosted antiretrovirals\r\n* Gastrointestinal (GI): cimetidine, aprepitant\r\n* Hepatitis C: boceprevir, telaprevir\r\n* Miscellaneous: Seville oranges, grapefruit, or grapefruit juice and/or pummelos, star fruit, exotic citrus fruits, or grapefruit hybrids Use of potent CYP3A4 inhibitors, including but not limited to ketoconazole, atazanavir, clarithromycin, indinavir,\r\nitraconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, and grapefruit or grapefruit juice Use of potent CYP3A4 inhibitors, such as ketoconazole, atazanavir, clarithromycin, indinavir, itraconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, and grapefruit or grapefruit juice Prior or current use of statin medication, or current use of gemfibrozil, cyclosporine, danazol, lomitapide, verapamil, diltiazem, dronedarone, amiodarone, amlodipine, ranolazine, or strong cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) inhibitors (e.g., itraconazole, ketoconazole, posaconazole, voriconazole, human immunodeficiency virus [HIV] protease inhibitors, boceprevir, telaprevir, erythromycin, clarithromycin, telithromycin, nefazodone, or cobicistat-containing products) Current use of the following cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP 3A4) inhibitors are not allowed: boceprevir, clarithromycin, cyclosporine (oral), darunavir plus ritonavir, fosamprenavir, fosamprenavir plus ritonavir, gemfibrozil, grapefruit juice > 1 liter per day, itraconazole, lopinavir plus ritonavir, nelfinavir, saquinavir plus ritonavir, telaprevir, tipranavir plus ritonavir Use of drugs or foods that are known strong CYP3A4 inhibitors, including but not limited to atazanavir, clarithromycin, indinavir, itraconazole, ketoconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, and grapefruit or grapefruit juice. strong CYP3A inhibitors (including, but not limited to, atazanavir, clarithromycin, indinavir, itraconazole, ketoconazole, nefazodone, nelfinavir, ritonavir, saquinavir, telithromycin, troleandomycin, voriconazole, grapefruit, grapefruit juice)