Serum creatinine =< . x upper limit of normal (ULN) or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used, within days before the first dose of cabozantinib Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min within days before the first dose of cabozantinib. For creatinine clearance estimation, the Cockcroft and Gault equation should be used Creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation. STUDY TREATMENT: Creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation within days prior to the first study treatment. Obtained within days prior to the first dose of cabozantinib: serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min. For creatinine clearance estimation, the Cockcroft and Gault equation should be used. Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft?Gault glomerular filtration rate estimation Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation. Serum creatinine =< . x ULN OR creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation, obtained within days prior to first study treatment Within days before the first dose of study treatment: Serum creatinine =< . x the ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Obtained within days prior to the first study treatment (cycle , day ): serum creatinine =< . x ULN or creatinine clearance =< mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Within days prior to registration: Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min on the basis of measured CrCl from a -hour urine collection or Cockcroft-Gault glomerular filtration rate estimation Within days prior to the first study treatment (cycle , day ): Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Serum creatinine ?. x ULN or creatinine clearance ? mL/min based on either urine collection or Cockcroft Gault estimation. Serum creatinine ? . x ULN or creatinine clearance ? mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation within days prior to the first study treatment (cycle , day ) Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Within days prior to the first dose of cabozantinib: Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min (for creatinine clearance estimation, the Cockcroft and Gault equation should be used) Serum creatinine =< . x ULN OR creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Within days prior to the first study treatment (cycle , day ): Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation. Creatinine ? x ULN OR creatinine clearance > mL/min based on the Cockroft-Gault glomerular filtration rate (GFR) estimation within days prior to registration RENAL COHORT: Laboratory values as follows within days before the first dose of daratumumab: serum creatinine clearance (CrCl) ? mL/min; dialysis patients will be excluded; for creatinine clearance estimation, the Cockcroft and Gault equation should be used BLADDER: Clinical laboratory values at screening: serum creatinine clearance (CrCl) ? mL/min; dialysis patients will be excluded; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Within days before the first dose of cabozantinib: Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine ? . x ULN or creatinine clearance ? mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation: Creatinine clearance > mL/min (assessed by Cockcroft Gault estimation) Within days prior to the first study treatment (cycle , day ): Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Creatinine clearance > mL/min (assessed by Cockcroft Gault estimation) Obtained within days prior to the first study treatment (cycle , day ); serum creatinine ? . x ULN or creatinine clearance ? mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Serum creatinine =< . X ULN or creatinine clearance >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN or creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation (obtained within days prior to the first study treatment [course , day ]) Alkaline phosphatase . ULN with the following exception: Patients with liver or bone inv ULN or creatinine clearance mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation: ( age) (weight in kg) (. if female) (serum creatinine in mg/dL) Serum creatinine =< . x ULN OR creatinine clearance >= mL/min/. m^ by Cockcroft-Gault estimation Within days prior to first study treatment: Serum creatinine =< . x ULN OR creatinine clearance >= mL/min on the basis of the Cockcroft-Gault glomerular filtration rate estimation Serum creatinine =< . x ULN or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Serum creatinine =< . x ULN, or creatinine clearance (CrCl) >= mL/min; for creatinine clearance estimation, the Cockcroft and Gault equation should be used Measured or calculated creatinine clearance >= milliliters per minute (mL/min) on the basis of the Cockcroft-Gault glomerular filtration rate estimation Cancer-Specific Inclusion Criteria: Creatinine clearance > mL/min (assessed by Cockcroft Gault estimation) and creatinine < . x ULN Creatinine clearance >= mL/min (assessed by Cockcroft Gault estimation)