Dinaciclib and Akt Inhibitor MK2206 in Treating Patients With Pancreatic Cancer That Cannot Be Removed by Surgery

A Phase I Trial of Dinaciclib (SCH727965) and MK-2206 in Metastatic Pancreatic Cancer With an Expansion Cohort in Advanced Pancreatic Cancer

This randomized phase I trial studies the side effects and best dose of dinaciclib and Akt inhibitor MK2206 in treating patients with pancreatic cancer that cannot be removed by surgery. Dinaciclib and Akt inhibitor MK2206 may stop the growth of tumor cells by blocking some of the enzymes needed for cell growth.

PRIMARY OBJECTIVES:

I. Determine the maximum tolerated dose (MTD), safety, and toxicity of the combination of MK-2206 (Akt inhibitor MK2206) and dinaciclib in patients with advanced pancreatic adenocarcinoma (Level 2.5, determined August 2015: Dinaciclib 9 mg/m2 intravenously [IV]; MK-2206 135 mg orally [PO]).

SECONDARY OBJECTIVES:

I. Assess the preliminary efficacy of the combination of MK-2206 and dinaciclib in metastatic pancreatic cancer patients as determined by disease control rate in an expansion cohort of patients at the MTD.

II. Characterize the pharmacokinetic (PK) profile of the combination of MK-2206 and dinaciclib.

III. Analyze pre-treatment tumor specimens for activation of retrovirus-associated deoxyribonucleic acid (DNA) sequence (RAS) downstream pathway signaling as potential predictors of treatment benefit.

IV. Correlate post-treatment pharmacodynamic (PD) changes in phosphorylated extracellular signal-regulated kinase (p-ERK), phosphorylated-v-akt murine thymoma viral oncogene homolog 1 (p-AKT), p-ribosomal protein S6 kinase (S6), phosphorylated DNA-directed ribonucleic acid (RNA) polymerase II subunit RPB1 (pPOLR2), phosphorylated retinoblastoma protein (pRB), proliferation-related Ki-67 antigen (Ki-67), and cleaved caspase-3 in tumor biopsies and peripheral blood mononuclear cells with MK-2206 and dinaciclib exposure and treatment response to demonstrate proof-of-concept and assess for post-treatment predictive biomarkers.

V. To assess the effect of polymorphic variations in candidate genes (cytochrome P450 3A4/5 [CYP3A4/5], ATP-binding cassette, sub-family B [MDR/TAP], member 1 [ABCB1]) and other genetic alterations that may be discovered during the conduct of the study, on MK-2206 and dinaciclib disposition, toxicity, and efficacy.

OUTLINE: This is a dose-escalation study. Patients are randomized to 1 of 2 treatment arms.

ARM A: Patients receive dinaciclib IV over 2 hours on day 1 of course 1.

ARM B: Patients receive Akt inhibitor MK2206 PO on day 1 of course 1.

After day 1, all patients receive Akt inhibitor MK2206 PO on days 1, 8, and 15 and dinaciclib IV over 2 hours on days 1, 8, and 15. Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up periodically.

Inclusion Criteria:

• Patients must have a histologically confirmed, unresectable pancreatic adenocarcinoma
• Patients must have already received or refused 1st-line treatment
• Measurable disease will be required; biopsiable disease will be required
• Eastern Cooperative Oncology Group (ECOG) performance status =< 1
• Life expectancy of greater than 16 weeks
• Leukocytes >= 3,000/mcL
• Absolute neutrophil count >= 1,500/mcL
• Platelets >= 100,000/mcL
• Total bilirubin =< 1.5 institutional upper limit of normal (IULN)
• Aspartate aminotransferase (AST)(serum glutamic oxaloacetic transaminase [SGOT])/alanine aminotransferase (ALT)(serum glutamate pyruvate transaminase [SGPT]) =< 2.5 X IULN if no liver metastasis or =< 5 X IULN if liver metastases are present
• Creatinine not to be above IULN OR creatinine clearance >= 60 mL/min/1.73 m^2 for patients with creatinine levels above institutional normal
• Women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately; men treated or enrolled on this protocol must also agree to use adequate contraception prior to the study, for the duration of study participation, and 4 months after completion of MK-2206 and dinaciclib administration
• Patients must be able to swallow whole tablets (for MK-2206); nasogastric or gastrostomy (G) tube administration is not allowed; tablets must not be crushed or chewed
• Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

• Patients who have had chemotherapy or radiotherapy within 4 weeks (6 weeks for nitrosoureas or mitomycin C) prior to entering the study or those who have not recovered to =< grade 1 (or =< tolerable grade 2 for neuropathy) adverse events due to agents administered more than 4 weeks earlier

• Patients who are receiving any other investigational agents

• Patients with known brain metastases should be excluded from this clinical trial

• History of allergic reactions attributed to compounds of similar chemical or biologic composition to dinaciclib or to MK-2206

• Patients receiving any medications or substances that are strong inhibitors/inducers, sensitive substrates, or substrates with a narrow therapeutic index of cytochrome P450, family 3, subfamily A, polypeptide 4 (CYP3A4) or permeability glycoprotein (P-gp) are ineligible; caution should be exercised when dosing dinaciclib and/or MK-2206 concurrently with CYP3A4 or P-gp substrates, inhibitors/inducers; if subjects are taken off a forbidden medicine, a one-week washout is required for inhibitors and two weeks for inducers; subjects on Coumadin are eligible but more frequent monitoring of the international normalized ratio (INR) (weekly during the first cycle, then at least each cycle thereafter) is recommended; as part of the enrollment/informed consent procedures, the patient will be counseled on the risk of interactions with other agents, and what to do if new medications need to be prescribed or if the patient is considering a new over-the-counter medicine or herbal product

• Patients with diabetes or in risk for hyperglycemia should not be excluded from trials with MK-2206, but the hyperglycemia should be well controlled before the patient enters the trial (glycosylated hemoglobin [Hba1c] < 7.5)

• Concurrent medications associated with a risk of corrected QT (QTc) prolongation and/or torsades de pointes are not allowed; those medications listed as reported but lacking substantial evidence for causing QTc prolongation and torsades de pointes will be allowed, although if an alternative medication can be substituted, that would be preferable; for this study, a baseline electrocardiogram (EKG) will be performed and will be repeated during cycle 1 and then every 3 cycles while on treatment

• Patients with current evidence of significant cardiovascular disease (New York Heart Association class III or IV cardiac disease), symptomatic congestive heart failure, dilated/hypertrophic or restrictive cardiomyopathy, myocardial infarction (within the past 6 months), unstable angina, unstable arrhythmia or a need for anti-arrhythmic therapy (use of medications for rate control for atrial fibrillation is allowed such as calcium channel blockers and beta-blockers, if stable medication for at least last month prior to initiation of MK-2206 treatment and medication not listed as causing torsades de pointes), or evidence of acute ischemia on electrocardiogram (ECG); marked baseline prolongation of QT/QTc interval, e.g., repeated demonstration of a QTc interval > 450 msec*; long QT syndrome; the required use of concomitant medication that may cause torsades de pointes or may cause a significant prolongation of the QTc

  • Note: Due to difficulties assessing QTc in patients with heart block, they may be eligible if deemed safe by a cardiologist

• Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements

• Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with MK-2206 and/or dinaciclib

• Human immunodeficiency virus (HIV)-positive patients on combination antiretroviral therapy are ineligible

• Clinically significant ascites