Octreotide Acetate and Recombinant Interferon Alfa-2b or Bevacizumab in Treating Patients With Metastatic or Locally Advanced, High-Risk Neuroendocrine Tumor

* Occasionally, it is not possible to establish tumor grade on fine-needle aspiration (FNA) cytology material; if a new biopsy is needed, a core needle biopsy should be obtained whenever possible

Patient must have high risk disease as defined by at least one of the following:

* Progressive disease

* Refractory carcinoid syndrome while receiving octreotide (defined by \> 2 flushing episodes/day or \> 4 bowel movements/day)

* Atypical histology and more than 6 lesions

* Metastatic gastric carcinoid

Patient must have measurable disease; CT or magnetic resonance imaging (MRI) used for tumor measurement must have been completed within 28 days prior to registration; X-rays, scans or other tests for assessment of non-measurable disease must have been performed within 42 days prior to registration; all disease must be assessed and documented on the Baseline Tumor Assessment Form; these scans also must be submitted for central radiology review

Institutions are required to submit CT/MRI scans and archived tissue for pathology review; furthermore, institutions are required to seek additional patient consent for submission of octreotide scans, and submission of blood and use of archived tissue for correlative studies

If patient consents to the submission of octreotide scans, the patient must also be registered to Registration Step 2

Patient may have had up to one prior regimen of cytotoxic chemotherapy; at least 28 days must have elapsed since completion of prior therapy, and patient must have recovered from all effects

Patient may have had prior hepatic artery embolization; at least 28 days must have elapsed since embolization and there must be residual measurable disease; chemoembolization will be considered as one prior chemotherapy regimen

Patient must not have received prior interferon, bevacizumab or any other therapy targeting VEGF or VEGF receptors

Patient may have received prior therapy targeting stem cell factor receptor (c-kit), abelson murine leukemia viral oncogene homolog 1 (abl), platelet-derived growth factor receptor (PDGFR), mammalian target of rapamycin (mTOR), and somatostatin receptors (not counted toward prior cytotoxic chemotherapy)

Prior radiation is allowed; there must be measurable disease; if prior therapies include peptide receptor radiotherapy, the target lesion(s) must have shown disease progression; at least 28 days must have elapsed since completion of prior therapy, and patient must have recovered from all effects

Patients must have recovered from any prior surgery; one week must have elapsed from the time of a minor surgery and 4 weeks from major surgery

At least 21 days must have elapsed since any prior octreotide LAR depot treatment

Patient must have a Zubrod performance status of 0-2

Absolute neutrophil count (ANC) \> 1,500/mcl

Hemoglobin \> 8 g/dl

Platelets \> 100,000/mcl

Serum bilirubin \< 1.5 x institutional upper limit of normal (IULN)

Serum glutamic oxaloacetic transaminase (SGOT) or serum glutamate pyruvate transaminase (SGPT) =\< 2.5 x IULN

Serum creatinine \< 1.5 mg/dL

Urine protein must be screened by urine analysis for Urine Protein Creatinine (UPC) ratio; for UPC ratio \> 0.5, 24-hour urine protein must be obtained and the level must be \< 1,000 mg for patient enrollment; these results must be obtained within 28 days prior to registration

* Note: UPC ratio of spot urine is an estimation of the 24-hour urine protein excretion - a UPC ratio of 1 is roughly equivalent to a 24-hour urine protein of 1 gm

Patients not on anticoagulation must have prothrombin time (PT) and partial thromboplastin time (PTT) =\< 1.1 x lULN obtained within 28 days prior to registration; patients on full-dose anticoagulation (warfarin or low molecular weight heparin) are eligible provided that both of the following criteria are met:

* The patient has an in-range international normalized ratio (INR) (usually between 2 and 3) on a stable dose of oral anticoagulant or on a stable dose of low molecular weight heparin

* The patient has no active bleeding or pathological condition that carries a high risk of bleeding such as varices

Patient must not have history or evidence of clinically significant peripheral vascular disease such as non-healing peripheral ulcers or claudication

Patient must not have a history of primary brain tumor or metastatic cancer to the brain; brain imaging studies are not required for eligibility if the patient has no neurological signs or symptoms; if brain imaging studies are performed, they must be negative for disease

Patient must not have a history of abdominal fistula, gastrointestinal perforation, or intra-abdominal abscess within 28 days prior to registration

Patient must not have history within the past 5 years or presence of bleeding diathesis or coagulopathy that results in spontaneous bleeding (in the absence of trauma) requiring packed red blood cells (pRBC) transfusion

Patient must not have a serious (requiring active medical therapy with medication or medical device under the supervision of a physician) non-healing wound, ulcer, or bone fracture

Patient must not have recent history (within 6 months prior to registration) of these arterial thromboembolic events: transient ischemic attack, cerebrovascular accident, unstable angina, myocardial infarction, or New York Heart Association grade II or higher congestive heart failure

Patients with a history of hypertension must be well-controlled (blood pressure \< 150/90), on a stable regimen of antihypertensive therapy

Patient must not have hemoglobinopathies (e.g., Thalassemia) or any other cause of hemolytic anemia

Patient must not plan to use any other concurrent chemotherapy, immunotherapy, hepatic artery embolization, hepatic artery chemoembolization, radiofrequency ablation, other tumor ablative procedure or radiotherapy while on protocol treatment

Patient must not be pregnant or nursing because bevacizumab may be harmful to the developing fetus and newborn; male and female patients of reproductive potential must agree to employ an effective barrier method of birth control throughout protocol treatment and for up to 6 months following discontinuation of bevacizumab

No other prior malignancy is allowed except for the following: adequately treated basal cell or squamous cell skin cancer, or other adequately treated in situ cancer, or any other cancer from which the patient has been disease free for five years

All patients must be informed of the investigational nature of this study and must sign and give written informed consent in accordance with institutional and federal guidelines

At the time of patient registration, the treating institution's name and identification (ID) number must be provided to the Data Operations Center in Seattle in order to ensure that the current (within 365 days) date of institutional re view board approval for this study has been entered into the data base

REGISTRATION STEP 2 - SPECT SUBSTUDY

Patient must have registered to the main study

Patient must have consented to the submission of octreotide scans

An octreotide scan obtained within 28 days prior to Registration Step 1 must be available for submission

What this study is about