To Examine The Effects Of Lapatinib On Orally And Intravenously Administered Midazolam In Cancer Patients

A Four-Way Cross-Over Study to Examine the Effects of Lapatinib on the Pharmacokinetics of Orally and Intravenously Administered Midazolam in Cancer Patients

To characterize the effect of repeat oral dose of lapatinib treatment on the pharmacokinetics of a single oral and single intravenous dose of midazolam in adult cancer patients. Also to assess the safety and tolerability of chronic oral lapatinib therapy in cancer patients.

Study Overview

• Status: Completed
• Conditions: Neoplasms, Breast
• Intervention / Treatment: Drug: Midazolam; Drug: Lapatinib

• Study Type: Interventional
• Enrollment (Actual): 24
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • New Hampshire
    • Lebanon, New Hampshire, United States, 03756
      • GSK Investigational Site
  • North Carolina
    • Chapel Hill, North Carolina, United States, 27599
      • GSK Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 70 years (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion criteria:

• Histologically confirmed, solid tumor refractory to standard therapy.
• Tumor for which there is no standard therapy.
• Able to swallow and retain oral medication.
• ECOG (Eastern Cooperative Oncology Group) performance status 0 to 2.
• Provided written informed consent.
• Adequate bone marrow function.
• Serum creatinine is less than or equal to 1.5 mg/dL.
• Calculated creatinine clearance is greater than or equal to 60 ml/min based on Cockcroft and Gault.
• Total bilirubin is greater than or equal to the upper limit of normal of institutional values.
• Aspartate and alanine transaminase is less than or equal to 3 times the upper limit of the institutional values.
• Have a left ventricular ejection fraction (LVEF) greater than or equal to 40% based on electrocardiogram (ECHO) or multiple gated acquisition scan (MUGA).
• Resting oxygen saturations of greater than 90%.

Exclusion criteria:

• Pregnant or lactating female.
• Have malabsorption syndrome, a disease affecting gastrointestinal function.
• Resection of the stomach or small bowel.
• Evidence of symptomatic or uncontrolled brain metastases or leptomeningeal disease.
• Is considered medically unfit for the study by the investigator as a result of the medical interview, physical exam, or screening investigations.
• Have a known immediate or delayed hypersensitivity reaction or idiosyncrasy to drugs chemically related to the investigational product.
• Use of anilinoquinazolines, such as gefitinib [Iressa™], erlotinib [Tarceva™].
• Immediate or delayed hypersensitivity reaction to midazolam or any component of the formulation, including benzyl alcohol (cross-sensitivity with other benzodiazepines may exist).
• Has narrow-angle glaucoma which is a contraindication to midazolam use.
• Has received treatment with any investigational drug in the previous 4 weeks.
• Received chemotherapy, immunotherapy, biologic therapy or hormonal therapy within the past 14 days, with the exception of mitomycin C within the past 6 weeks.
• Currently receiving amiodarone or has received amiodarone in the 6 months prior to screening.
• Is taking regular doses of opiates that in the opinion of the investigator would put the patient at risk of clinically significant respiratory compromise when midazolam is administered.
• Physiological, familial, sociological, or geographical conditions that do not permit compliance with the protocol.
• Has Class II to IV heart failure as defined by the New York Heart Association (NYHA) functional classification system.
• Clinically significant electrocardiogram (ECG) abnormality.
• Clinically assessed to have inadequate venous access for protocol-related blood draws.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Treatment
• Allocation: Randomized
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm

Intervention / Treatment

Experimental: Subjects with cancer; In Part 1 of the study, subjects will be randomized to one of four sequences. All subjects will receive oral or intravenous (IV) midazolam on Days 1, 3, 9 and 11 as per assigned randomization scheme. Starting on Day 4 through Day 11, subjects will receive a daily dose of 1500 milligrams (mg) of oral lapatinib. In Part 2, which will begin on Day 12, the subjects will be required to take 1500 mg of lapatinib daily until removed from the study for disease progression, adverse events, withdrawal of consent, or transfer to another lapatinib study.

Drug: Midazolam; Subjects will receive midazolam by oral or IV route on Days 1, 3, 9 and 11. Oral midazolam was supplied as 3 mg tablets; IV midazolam was supplied as 1 milligram per milliliter (mg/L) sterile solution.; Other Names: GW572016 oral tablets; Drug: Lapatinib; Subjects will receive 1500 mg lapatinib by oral route once daily from Day 4.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area under the concentration versus time curve (AUC) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration. AUC of midazolam in the presence and absence of lapatinib will be determined.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Maximum observed concentration (Cmax) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration. Cmax of midazolam in the presence and absence of lapatinib will be determined.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Clearance (CL) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration. CL of midazolam in the presence and absence of lapatinib will be determined.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Half-life (t½) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration. t1/2 of midazolam in the presence and absence of lapatinib will be determined.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Absolute bioavailability (F) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration. Absolute bioavailability of midazolam in the presence and absence of lapatinib will be determined.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time of maximum observed concentration (tmax) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Volume of distribution (Vss) of midazolam	Blood samples will be collected at indicated time points for the determination of midazolam concentration.	Pre-dose, 2 minutes, 0.25, 0.5, 0.75, 1, 1.5, 2, 3, 4, 6, 8, 10 and 24 hours post-dose on Day 1, Day 3, Day 9 and Day 11
Number of subjects with adverse events (AEs) and serious adverse events (SAEs)	An AE is any untoward medical occurrence in a clinical investigation subject, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An SAE is any untoward medical occurrence that at any dose: results in death; is life-threatening; requires hospitalization or prolongation of existing hospitalization; results in disability/incapacity; is a congenital anomaly/birth defect; important medical events may require medical or surgical intervention to prevent one of the other outcomes listed above.	Up to Month 7
Number of subjects with abnormal clinical chemistry parameters	The following clinical chemistry parameters were evaluated: sodium, potassium, total carbon dioxide (CO2), calcium, total bilirubin, alanine aminotransferase (ALT), aspartate aminotransferase (AST), creatinine and blood urea nitrogen (BUN).	Up to Month 7
Number of subjects with abnormal hematology parameters	The following hematology parameters were evaluated: hemoglobin, hematocrit, red blood cell count, white blood cell count, neutrophil count, lymphocyte count, monocyte count, eosinophil count and basophil count.	Up to Month 7
Number of subjects with abnormal blood pressure	Systolic and diastolic blood pressure will be measured.	Up to Month 7
Number of subjects with abnormal heart rate	Heart rate will be measured.	Up to Month 7

Collaborators and Investigators

• Sponsor: GlaxoSmithKline

Study record dates

Study Major Dates

• Study Start (Actual): November 21, 2005
• Primary Completion (Actual): February 8, 2007
• Study Completion (Actual): February 8, 2007

Study Registration Dates

• First Submitted: November 22, 2005
• First Submitted That Met QC Criteria: November 23, 2005
• First Posted (Estimate): November 24, 2005

Study Record Updates

• Last Update Posted (Actual): December 6, 2017
• Last Update Submitted That Met QC Criteria: December 4, 2017
• Last Verified: December 1, 2017

More Information

Terms related to this study

• Keywords: midazolam; pharmacokinetics; lapatinib
• Additional Relevant MeSH Terms: Skin Diseases; Neoplasms; Neoplasms by Site; Breast Diseases; Breast Neoplasms; Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Central Nervous System Depressants; Enzyme Inhibitors; Anesthetics, Intravenous; Anesthetics, General; Anesthetics; Antineoplastic Agents; Tranquilizing Agents; Psychotropic Drugs; Protein Kinase Inhibitors; Hypnotics and Sedatives; Adjuvants, Anesthesia; Anti-Anxiety Agents; GABA Modulators; GABA Agents; Midazolam; Lapatinib
• Other Study ID Numbers: EGF10015