TAPUR: Testing the Use of Food and Drug Administration (FDA) Approved Drugs That Target a Specific Abnormality in a Tumor Gene in People With Advanced Stage Cancer

Inclusion Criteria: * 12 years of age or older (\*Restrictions apply. Not all therapies are available for patients \<18) * Histologically-proven locally advanced or metastatic solid tumor, multiple myeloma or B cell non-Hodgkin lymphoma who is no longer benefiting from standard anti-cancer treatment or for whom, in the opinion of the treating physician, no such treatment is available or indicated (except under the circumstance in which the TAPUR arm is designed to provide additional evidence to support an existing FDA indication). * Performance status 0-2 (Per Eastern Cooperative Oncology Group (ECOG) criteria) * Patients must have acceptable organ function as defined below. However, as noted above, drug-specific inclusion/exclusion criteria specified in the protocol appendix for each agent will take precedence for this and all inclusion criteria: 1. Absolute neutrophil count ≥ 1500 µl 2. Hemoglobin ≥ 9.0 g/dl 3. Platelets ≥ 75,000/µl 4. Total bilirubin \< 2.0 mg/ dl, except in patients with Gilbert's Syndrome 5. Aspartate aminotransferase (AST) serum glutamic-oxaloacetic transaminase (SGOT) and alanine aminotransferase (ALT) serum glutamic-pyruvic transaminase (SGPT) \< 2.5 x institutional upper limit of normal (ULN) (or \< 5 x ULN in patients with known hepatic metastases) 6. Serum creatinine ≤ 1.5 × ULN or calculated or measured creatinine clearance ≥ 50 mL/min/1.73 m2 * Patients must have disease that can be objectively measured by physical, laboratory or radiographic exam (per RECIST v1.1 for solid tumor, Lugano criteria for non-Hodgkin lymphoma or International Myeloma Working Group criteria for multiple myeloma). * Results must be available from a genomic test or immunohistochemistry (IHC) test for protein expression performed in a Clinical Laboratory Improvement Amendments (CLIA)-certified and College of American Pathologists (CAP)-accredited or New York State accredited (for labs offering services to residents of NY) laboratory. Labs that have registered the test with the NIH Genetic Testing Registry or that provide a report that has been designated as optimized for TAPUR participation are preferred, but not required. The genomic or IHC test used to qualify a patient for participation in TAPUR may have been performed on any specimen of the patient's tumor obtained at any point during the patient's care at the discretion of the patient's treating physician. Genomic assays performed on cell-free DNA in plasma ("liquid biopsies") will also be acceptable if the genomic analysis is performed in a laboratory that meets the criteria described above. * Ability to understand and the willingness to sign a written informed consent/assent document. * Have a tumor genomic profile for which single agent treatment with one of the FDA approved targeted anti-cancer drugs included in this study has potential clinical benefit based on the criteria described in protocol. * For orally administered drugs, the patient must be able to swallow and tolerate oral medication and must have no known malabsorption syndrome. * Because of the risks of drug treatment to the developing fetus, women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) for the duration of study participation, and for four months following completion of study therapy. Should a woman become pregnant or suspect she is pregnant while participating in this study or if she is the partner of a male participant in this study and becomes pregnant while he is participating in this study, she should inform her or her partner's treating physician immediately as well as her obstetrician. Female study patients who become pregnant must immediately discontinue treatment with any study therapy. Male patients should avoid impregnating a female partner. Male study patients, even if surgically sterilized, (i.e. post-vasectomy) must agree to one of the following: practice effective barrier contraception during the entire study treatment period and for a specified amount of time the last dose of study treatment, or completely abstain from sexual intercourse. Note: TAPUR does not explicitly exclude any type of solid tumor, but the patient must have measurable and evaluable disease per RECIST v1.1. Exclusion Criteria: * Patients whose disease is not measurable or cannot be assessed by radiographic imaging or physical examination (e.g., elevated serum tumor marker only) are not eligible * Patients with primary brain tumors or new, untreated or progressive leptomeningeal metastases are excluded * Patients with previously treated brain metastases or previously treated leptomeningeal disease are eligible, provided that the patient has not experienced a seizure or had a clinically significant change in neurological status within the 1 months prior to registration. All patients with previously treated brain metastases must be clinically stable for at least 1 month after completion of treatment and off steroid treatment for one month prior to study enrollment. * Patients with known progressive brain metastases are eligible but additional eligibility criteria apply. Note: there are additional exclusion criteria that may apply