Study of XL281 in Adults With Solid Tumors

Sponsor

Exelixis (Industry)

Overall Status

Completed

CT.gov ID

NCT00451880

Collaborator

(none)

180

Enrollment

Locations

Arms

Duration (Months)

Patients Per Site

0.5

Patients Per Site Per Month

Study Details

Study Description

Brief Summary

The purpose of this study is to determine the safest dose of the multiple Raf kinase inhibitor (including c-Raf, B-Raf, and the activated mutant B-RafV600E) XL281, how often it should be taken, and how well subjects with cancer tolerate XL281. This study will also determine how the body reacts to XL281 when it is taken with and without food, and with and without Pepcid (famotidine), a drug that inhibits stomach acid production.

Condition or Disease	Intervention/Treatment	Phase
Cancer Non-small-cell Lung Cancer Colorectal Cancer Papillary Thyroid Cancer Melanoma	Drug: XL281 Drug: famotidine	Phase 1

Study Design

Study Type:

Interventional

Anticipated Enrollment :

180 participants

Allocation:

Non-Randomized

Intervention Model:

Single Group Assignment

Masking:

None (Open Label)

Primary Purpose:

Treatment

Official Title:

A Phase 1 Dose-Escalation Study of the Safety and Pharmacokinetics of XL281 Administered Orally to Subjects With Solid Tumors

Study Start Date :

Feb 1, 2007

Actual Primary Completion Date :

Oct 1, 2011

Actual Study Completion Date :

Oct 1, 2011

Arms and Interventions

Arm	Intervention/Treatment
Experimental: Arm 1 XL281 administered once a day	Drug: XL281 Gelatin capsules supplied as 5-, 25-, and 100-mg strengths
Experimental: Arm 2 XL281 administered twice a day	Drug: XL281 Gelatin capsules supplied as 5-, 25-, and 100-mg strengths
Experimental: Arm 3 XL281 administered once a day. Subjects in this arm will be dosed under fed conditions, fasted conditions, and with a concomitant single dose of 40 mg famotidine, during the second, third, and fourth week of the first cycle.	Drug: XL281 Gelatin capsules supplied as 5-, 25-, and 100-mg strengths Drug: famotidine single dose, supplied as 20-mg or 40-mg tablets Other Names: Pepcid®

Arm

Intervention/Treatment

Experimental: Arm 1

XL281 administered once a day

Drug: XL281

Gelatin capsules supplied as 5-, 25-, and 100-mg strengths

Experimental: Arm 2

XL281 administered twice a day

Drug: XL281

Gelatin capsules supplied as 5-, 25-, and 100-mg strengths

Experimental: Arm 3

XL281 administered once a day. Subjects in this arm will be dosed under fed conditions, fasted conditions, and with a concomitant single dose of 40 mg famotidine, during the second, third, and fourth week of the first cycle.

Drug: XL281

Gelatin capsules supplied as 5-, 25-, and 100-mg strengths

Drug: famotidine

single dose, supplied as 20-mg or 40-mg tablets

Other Names:

Pepcid®

Outcome Measures

Primary Outcome Measures

Safety, tolerability, and maximum tolerated dose (MTD) of once daily or twice daily oral administration of XL281 [Assessed at periodic visits]
To assess the pharmacokinetic/pharmacodynamic/preliminary clinical activity relationship following XL281 administration in different tumor types from subjects treated at the MTD [Assessed at periodic visits]
To determine the bioavailability of XL281 under fed and fasted conditions, and with or without the concomitant use of a single dose of famotidine in subjects with solid tumors [Assessed during the second, third, and fourth week of the first cycle of dosing]

Secondary Outcome Measures

Plasma pharmacokinetics of once daily or twice daily oral administration of XL281 [Assessed at periodic visits]

Eligibility Criteria

Criteria

Ages Eligible for Study:

18 Years and Older

Sexes Eligible for Study:

All

Accepts Healthy Volunteers:

Key Inclusion Criteria:

The subject has a histologically confirmed solid tumor that is metastatic or unresectable, and for which standard curative or palliative measures do not exist or are no longer effective, and there are no therapies known to prolong survival. Subjects treated at the MTD (once- or twice- daily) must have a diagnosis of colorectal cancer, non-small-cell lung cancer (no longer recruiting), melanoma, or papillary thyroid cancer. Certain other eligibility requirements must also be met.
The subject is ≥18 years old.
The subject has an Eastern Cooperative Oncology Group (ECOG) performance status ≤2.
The subject has adequate organ and marrow function.
The subject is capable of understanding the protocol and has signed the informed consent document.
Sexually active subjects (male and female) must use medically acceptable methods of contraception during the course of the study and for 3 months after study drug discontinuation.
Female subjects of childbearing potential must have a negative pregnancy test at screening.
The subject has had no other diagnosis of malignancy (unless non-melanoma skin cancer, carcinoma in situ of the cervix, or a malignancy diagnosed ≥5 years ago, and has had no evidence of disease for 5 years prior to screening for this study).
The subject must meet certain other eligibility requirements.

Key Exclusion Criteria:

The subject has received anticancer treatment (eg, chemotherapy, radiotherapy, cytokines, or hormones) within 28 days (6 weeks for nitrosoureas or mitomycin C) before the first dose of study drug.
The subject has received treatment with a small molecule kinase inhibitor or a hormonal therapy (including investigational kinase inhibitors or hormones) within a certain amount of time before the first dose of study drug.
The subject has received any other investigational agent within 28 days of first dose of XL281.
The subject has not recovered to Grade ≤1 from adverse events (AEs) or to within 10% of baseline values due to investigational or other agents administered more than 30 days prior to study enrollment. Some irreversible toxicities from previous treatment may be allowed.
The subject requires treatment with antacids (continual treatment), proton pump inhibitors, or H2 receptor antagonists.
The subject has a primary brain tumor or known brain metastases.
The subject has an 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.
The subject is pregnant or breastfeeding.
The subject is known to be positive for the human immunodeficiency virus (HIV).
The subject has an allergy or hypersensitivity to components of the XL281 formulation or to famotidine.
The subject is unable or unwilling to abide by the study protocol or cooperate fully with the investigator or designee.
The subject is receiving anticoagulation with warfarin or coumarin-related compounds (low-dose warfarin ≤ 1 mg/day, heparin, and low-molecular weight heparin are permitted)
The subject must meet certain other eligibility requirements.

Contacts and Locations

Locations

	Site	City	State	Country	Postal Code
1	Premiere Oncology of Arizona	Scottsdale	Arizona	United States	85260
2	H. Lee Moffitt Cancer Center & Research Institute	Tampa	Florida	United States	33612
3	Barbara Ann Karmanos Cancer Institute	Detroit	Michigan	United States	48201
4	Memorial Sloan Kettering Cancer Center	New York	New York	United States	10021
5	Sarah Cannon Research Institute	Nashville	Tennessee	United States	37203
6	Mary Crowley Cancer Research Center	Dallas	Texas	United States	75246