• Maximum tolerated dose (Phase I) [ Designated as safety issue: Yes ]
  
• Progression-free survival (PFS) at 6 months (Phase II) [ Designated as safety issue: No ]
  

• Objective response rate (Phase II) [ Designated as safety issue: No ]
  
• Median PFS (Phase II) [ Designated as safety issue: No ]
  
• Toxicity (Phase II) [ Designated as safety issue: Yes ]
  
• Pharmacokinetics (Phase II) [ Designated as safety issue: No ]
  

DISEASE CHARACTERISTICS:

• Histologically confirmed intracranial glioblastoma multiforme or gliosarcoma

• Evidence of tumor progression by MRI or CT scan within the past 14 days AND on a steroid dose that has been stable for ≥ 5 days

  • Patients who underwent prior therapy that included interstitial brachytherapy or stereotactic radiosurgery must have confirmation of true progressive disease rather than radiation necrosis by either positron emission tomography or thallium scanning, MR spectroscopy, or surgical documentation of disease

• Recent resection of recurrent or progressive tumor allowed

  • Residual disease is not required
• Treatment for any number of prior relapses, defined as disease progression after initial therapy (i.e., radiotherapy with or without chemotherapy if used as initial treatment), allowed (phase I)

• No more than 3 prior therapies (initial therapy and therapy for 2 relapses) (phase II)

  • Each of the following is considered 1 relapse:

    • Disease progression after initial therapy (i.e., radiotherapy with or without chemotherapy if used as initial therapy)
    • Underwent a surgical resection for relapsed disease and received no anticancer therapy for up to 12 weeks after surgical resection AND then underwent a subsequent surgical resection
    • Received prior therapy for a low-grade glioma, followed by a surgical diagnosis of glioblastoma
• Failed prior radiotherapy
• 15 unstained paraffin slides or 1 tissue block must be available from original surgery, definitive surgery, or surgery closest to the initiation of this study (phase II)

PATIENT CHARACTERISTICS:

• Karnofsky performance status 60-100%
• WBC ≥ 3,000/mm^3
• Absolute neutrophil count ≥ 1,500/mm^3
• Platelet count ≥ 100,000/mm^3
• Hemoglobin ≥ 10 g/dL (transfusion allowed)
• SGOT < 2 times upper limit of normal (ULN)
• Bilirubin < 2 times ULN
• Creatinine < 1.5 mg/dL

• PT/INR ≤ 1.5 (INR < 3.0 for patients on anticoagulation therapy)

  • INR < 1.1 times ULN (for patients on prophylactic anticoagulation therapy [low-dose warfarin])
• Fasting cholesterol < 350 mg/dL (for patients receiving temsirolimus and sorafenib)
• Fasting triglycerides < 400 mg/dL (for patients receiving temsirolimus and sorafenib)
• Well-controlled hypertension (e.g., systolic blood pressure ≤ 140 mm Hg or diastolic pressure ≤ 90 mm Hg) allowed
• Not pregnant or nursing
• Negative pregnancy test
• Fertile patients must use effective barrier contraception during and for at least 2 weeks (women) or 3 months (men) after completion of study treatment
• No peripheral neuropathy > grade 1 (for patients receiving sorafenib and tipifarnib)
• No evidence of bleeding diathesis or coagulopathy
• No history of any other cancer (except nonmelanoma skin cancer or carcinoma in situ of the cervix), unless in complete remission and off all therapy for that disease for ≥ 3 years
• No significant traumatic injury within the past 21 days
• No active infection or serious medical illness that would preclude study treatment
• No condition that would impair ability to swallow pills (e.g., gastrointestinal tract disease resulting in an inability to take oral medication or a requirement for IV alimentation or active peptic ulcer disease)
• No HIV disease
• No allergies to imidazoles (e.g., clotrimazole, ketoconazole, miconazole or econazole) or a history of allergic reactions attributed to any compound of similar chemical or biological composition to tipifarnib (for patients receiving sorafenib and tipifarnib)
• No other disease that would obscure toxicity or dangerously alter drug metabolism

PRIOR CONCURRENT THERAPY:

• See Disease Characteristics
• Recovered from prior therapy
• At least 7 days since prior noncytotoxic agents (e.g., interferon, tamoxifen, thalidomide, or isotretinoin) (radiosensitizer does not count)
• At least 14 days since prior vincristine
• At least 21 days since prior procarbazine or major surgery
• At least 28 days since prior investigational agent or cytotoxic therapy
• At least 42 days since prior nitrosoureas or radiotherapy
• No prior sorafenib, AEE788, or vatalanib
• No prior surgical procedures affecting absorption
• No prior tipifarnib, lonafarnib, or other agents targeting farnesyl transferase (for patients receiving sorafenib and tipifarnib)
• No prior temsirolimus or mTOR-targeting agent (phase II), rapamycin or everolimus, or Akt-pathway inhibitors (for patients receiving sorafenib and temsirolimus)
• No prior erlotinib hydrochloride, AEE788, or other epidermal growth factor receptor targeting agents (phase II) (for patients receiving sorafenib and erlotinib hydrochloride)
• No concurrent enzyme-inducing antiepileptic drugs (e.g., carbamazepine, oxcarbazepine, phenytoin, fosphenytoin, phenobarbital, or primidone)

• No other concurrent CYP3A4 inducers (e.g., rifampin or Hypericum perforatum [St. John's wort])

  • Dexamethasone allowed
• No concurrent hepatic cytochrome p450 enzyme-inducing anticonvulsants
• No other concurrent investigational agents or anticancer therapies, including chemotherapy, radiotherapy, hormonal therapy, or immunotherapy
• No concurrent prophylactic filgrastim (G-CSF) or other hematopoietic colony-stimulating factors

• Full-dose anticoagulants allowed provided both of the following criteria are met:

  • In-range INR (between 2-3) on a stable dose of oral anticoagulant or on a stable dose of low molecular weight heparin
  • No active bleeding or pathological condition that carries a high risk of bleeding (e.g., tumor involving major vessels or known varices)