Temozolomide With or Without Capecitabine in Treating Patients With Advanced Pancreatic Neuroendocrine Tumors

Phase 2

Active, not recruiting

Conditions: Gastrinoma
Somatostatinoma
Glucagonoma
Recurrent Islet Cell Carcinoma
Insulinoma
Islet Cell Carcinoma
Pancreatic Polypeptide Tumor

Interventions: Drug: temozolomide
Drug: capecitabine

Registration Number: NCT01824875

Lead Sponsor: ECOG-ACRIN Cancer Research Group

Brief Summary: This randomized phase II trial studies how well giving temozolomide with or without capecitabine works in treating patients with advanced pancreatic neuroendocrine tumors. Drugs used in chemotherapy, such as temozolomide and capecitabine, work in different ways to stop the growth of tumor cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. It is not yet known whether temozolomide is more effective with or without capecitabine in treating patients with advanced pancreatic neuroendocrine tumors.

Detailed Description: PRIMARY OBJECTIVES:

I. To evaluate progression-free survival (PFS) associated with temozolomide alone or temozolomide and capecitabine in patients with advanced pancreatic neuroendocrine tumors.

SECONDARY OBJECTIVES:

I. To evaluate response rates (RR) associated with temozolomide alone or temozolomide and capecitabine treatment in patients with advanced pancreatic neuroendocrine tumors.

II. To evaluate overall survival (OS) associated with temozolomide alone or temozolomide and capecitabine in patients with advanced pancreatic neuroendocrine tumors.

III. To evaluate the toxicity associated with temozolomide alone or temozolomide and capecitabine treatment in patients with advanced pancreatic neuroendocrine tumors.

IV. To evaluate the usefulness of methyl guanine methyltransferase (MGMT) status (by immunohistochemistry \[IHC\] and promoter methylation) for predicting response in pancreatic neuroendocrine tumor patients treated with either temozolomide or temozolomide and capecitabine.

V. To bank radiology images for evaluation of quality, reproducibility, and compliance with computed tomography (CT) methodology.

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM A: Patients receive temozolomide orally (PO) once daily (QD) on days 1-5. Treatment repeats every 28 days for up to 13 courses in the absence of disease progression or unacceptable toxicity.

ARM B: Patients receive capecitabine PO twice daily (BID) on days 1-14 and temozolomide PO QD on days 10-14. Treatment repeats every 28 days for up to 13 courses in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 3 months for 2 years, and then every 6 months for 3 years.

Recruitment & Eligibility

Status: ACTIVE_NOT_RECRUITING

Sex: All

Target Recruitment: 144

Inclusion Criteria

Patient must have histologically or pathologically confirmed locally unresectable or metastatic low or intermediate grade pancreatic neuroendocrine tumor
Patient must have measurable disease by Response Evaluation Criteria in Solid Tumors (RECIST) 1.1 criteria; baseline measurements and evaluations of all sites of disease must be obtained <= 4 weeks prior to randomization and must be acquired by multiphasic CT or contrast magnetic resonance imaging (MRI)
Date of last documented disease progression must be within 12 months from date of randomization
Prior everolimus and/or sunitinib therapy is allowed, so long as it was discontinued >= 4 weeks prior to randomization
Concurrent somatostatin analogues are allowed provided that patients
- Have been on a stable dose for 8 weeks and
- Have documented disease progression on that dose
Chemoembolization is allowed if ≥ 4 weeks from study entry. There are 2 possible scenarios:
- If patient has hepatic disease only: they need to have progressed in the liver since chemoembolization and have measurable disease by RECIST 1.1 in order to be eligible.
- If patient has hepatic and extrahepatic disease: they will need to have progressed inside OR outside the liver and have measureable disease by RECIST 1.1 in order to be eligible.
Leukocytes >= 3,000/mm^3
Absolute neutrophil count >= 1,500/mm^3
Hemoglobin >= 9 g/dL
Platelets >= 100,000/mm^3
Total bilirubin <= institutional upper limit of normal (ULN) or <= 1.5 X institutional ULN (if the patient has liver metastases)
Aspartate aminotransferase (AST) (serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) <= 3 X institutional ULN or (<= 5 X institutional ULN if the patient has liver metastases)
Serum creatinine <= 1.5 X institutional ULN
Patient must have Eastern Cooperative Oncology Group (ECOG) performance status 0-1
Patient must have life expectancy >= 12 weeks all females of childbearing potential must have a blood test or urine study within =< 2 weeks prior to randomization to rule out pregnancy; a female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria:
- Has not undergone a hysterectomy or bilateral oophorectomy; or
- Has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
Women of childbearing potential and sexually active males must be strongly advised to use an accepted and effective method of contraception or to abstain from sexual intercourse for the duration of their participation in the study; should a woman become pregnant while participating in this study, she should inform her treating physician immediately; if a man impregnates a woman while participating in this study, he should inform his treating physician immediately
Patient must be able to swallow pills
Patient must be able to tolerate CT or magnetic resonance (MR) imaging including contrast agents as required for their treatment and the protocol

Exclusion Criteria

Small cell carcinoma
Prior temozolomide, dacarbazine (DTIC), or capecitabine, or 5-FU (fluorouracil) therapy
Receiving any other investigational agents while on study treatment
Receiving Coumadin while on treatment; other anticoagulants are allowed
Patients with either clinically apparent central nervous system metastases or carcinomatous meningitis are ineligible
Active or uncontrolled infection or serious medical or psychiatric illness
History of allergic reactions attributed to compounds of similar chemical or biologic composition to temozolomide or capecitabine
Absorption issues that would limit the ability to absorb study agents
Patients with a history of the following within 12 months of study entry:
- Arterial thromboembolic events
- Unstable angina
- Myocardial Infarction
Symptomatic peripheral vascular disease
Patients with previous or concurrent malignancy; exceptions are made for patients who meet any of the following conditions:
- Non-melanoma skin cancer, in situ cervical cancer, or breast cancer in situ OR
- Prior malignancy completely excised or removed and patient has been continuously disease free for > 5 years OR
- Prior malignancy cured by non-surgical modalities and patient has been continuously disease free for > 5 years
Pregnant or breast-feeding

Study & Design

Study Type: INTERVENTIONAL

Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
Arm A (temozolomide)	temozolomide	Patients receive temozolomide PO QD on days 1-5. Treatment repeats every 28 days for up to 13 courses in the absence of disease progression or unacceptable toxicity.
Arm B (temozolomide and capecitabine)	temozolomide	Patients receive capecitabine PO BID on days 1-14 and temozolomide PO QD on days 10-14. Treatment repeats every 28 days for up to 13 courses in the absence of disease progression or unacceptable toxicity.
Arm B (temozolomide and capecitabine)	capecitabine	Patients receive capecitabine PO BID on days 1-14 and temozolomide PO QD on days 10-14. Treatment repeats every 28 days for up to 13 courses in the absence of disease progression or unacceptable toxicity.

Primary Outcome Measures

Name	Time	Method
Progression-free Survival	Assessed every 3 months for 3 years and then every 6 months for years 3-5	Progression-free survival (PFS) is defined as the time from randomization to progression or death without evidence of progression. Progression was evaluated using the revised Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1) and defined as at least a 20% increase in the sum of the diameters of target lesions, taking as reference the smallest sum on study (this includes the baseline sum if that is the smallest on study). In addition to the relative increase of 20%, the sum must also demonstrate an absolute increase of at least 5 mm. Kaplan-Meier method was used to estimate PFS.

Secondary Outcome Measures

Name	Time	Method
Overall Survival	Assessed every 3 months for 3 years and then every 6 months for years 3-5	Overall survival is defined as time from randomization to death or date last known alive.
Proportion of Patients With Response	Assessed every 3 months for 3 years and then every 6 months for years 3-5	Response was evaluated using the revised Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1) and defined as either complete response (CR) or partial response (PR). CR is defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR is defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters.
Association Between Methyl Guanine Methyltransferase (MGMT) Status by Immunohistochemistry (IHC) and Response	Assessed every 3 months for 3 years and then every 6 months for years 3-5	Response was evaluated using the revised Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1) and defined as either complete response (CR) or partial response (PR). CR is defined as disappearance of all target lesions. PR is defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. MGMT status was determined by IHC using paraffin-embedded sections of 4µm. A score (H-score) was generated based on the findings and scoring was performed by two pathologists. This H-score ranges from 0 (no staining in the tumor) to 300 (diffuse intense staining of the tumor). The highest score was used if there was disagreement. H-scores were grouped into 3 standard categories for MGMT status: Category 1 - \<=50 Category 2 - 51-100 Category 3 - \>100
Association Between Methyl Guanine Methyltransferase (MGMT) Status by Promoter Methylation and Response	Assessed every 3 months for 3 years and then every 6 months for years 3-5	Response was evaluated using the revised Response Evaluation Criteria in Solid Tumors (RECIST) guideline (version 1.1) and defined as either complete response (CR) or partial response (PR). CR is defined as disappearance of all target lesions. Any pathological lymph nodes (whether target or non-target) must have reduction in short axis to \< 10 mm. PR is defined as at least a 30% decrease in the sum of the diameters of target lesions, taking as reference the baseline sum diameters. MGMT status is determined by promoter methylation, a clinically validated methylation-specific polymerase chain reaction (PCR) analysis. A tumor sample is considered positive for MGMT promoter methylation if an 80bp band is detected in the methylated PCR reaction. It would be considered MGMT negative if an 80bp band is not detected in the methylated PCR reaction.

Trial Locations

Locations (321): Kaiser Anaheim Medical Center
🇺🇸
Anaheim, California, United States
Kaiser Permanente-Deer Valley Medical Center
🇺🇸
Antioch, California, United States
Kaiser Permanente Medical Group - Baldwin Park
🇺🇸
Baldwin Park, California, United States
Kaiser Foundation Hospital
🇺🇸
Bellflower, California, United States
Alta Bates Summit Medical Center-Herrick Campus
🇺🇸
Berkeley, California, United States
Mills - Peninsula Hospitals
🇺🇸
Burlingame, California, United States
Kaiser Permanente Hospital
🇺🇸
Fontana, California, United States
Kaiser Permanente, Fremont
🇺🇸
Fremont, California, United States
Kaiser Permanente
🇺🇸
Woodland Hills, California, United States
Kaiser Permanente - Harbor City
🇺🇸
Harbor City, California, United States
Scroll for more (311 remaining)
Kaiser Anaheim Medical Center
🇺🇸Anaheim, California, United States