A Two-dose Level Clinical Trial of Itraconazole in Patients With Metastatic Prostate Cancer Who Have Had Disease Progression While on Hormonal Therapy

• ClinicalTrials.gov Identifier: NCT00887458
• Recruitment Status: Completed
• First Posted: April 24, 2009
• Results First Posted: January 27, 2014
• Last Update Posted: October 16, 2017
• Sponsor: Johns Hopkins University
• Collaborator: Memorial Sloan Kettering Cancer Center
• Information provided by (Responsible Party): Johns Hopkins University

Study Description

Brief Summary:

This research is being done to test an investigational drug, called itraconazole, in the treatment of prostate cancer. Itraconazole is approved by the Food and Drug Administration (FDA) for the treatment of various fungal infections such as fingernail/toenail infections and other more serious fungal infections. The word "investigational" means that itraconazole is not approved for use in people with cancer. However, the FDA is allowing the use of itraconazole in this research study. Itraconazole has been shown to have activity against cancer (including prostate cancer) in the laboratory, but has not been tested against cancer in humans.

The purpose of this study is to find out:

• If itraconazole is safe when given at two different doses
• How itraconazole affects prostate specific antigen (PSA): a blood test that measures substances released by prostate cancer
• Whether itraconazole can delay further prostate cancer growth and spread
• How itraconazole affects other markers of prostate cancer

Condition or disease	Intervention/treatment	Phase
Prostate Cancer	Drug: Itraconazole 200 mg; Drug: Itraconazole 300mg	Phase 2

Detailed Description:

Itraconazole is an oral, generic, and commercially available antifungal drug with a long safety record when used at doses ranging from 200 to 600 mg daily.

Itraconazole has been shown in cellular and animal models to be a potent angiogenesis inhibitor as well as a Hedgehog pathway antagonist; both pathways are considered important in prostate cancer. Itraconazole has not previously been tested as an antineoplastic agent, but given its well-established safety profile, the gap between further preclinical studies and human clinical trials can be narrowed to accelerate development of this agent as a putative anticancer drug. The investigators hypothesize that itraconazole will prevent PSA progression in a significant proportion of men with metastatic CRPC and that it will have an acceptable safety profile at both doses. Itraconazole may ultimately delay the need for chemotherapy in these men.

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 46 participants
• Allocation: Randomized
• Intervention Model: Parallel Assignment
• Masking: None (Open Label)
• Primary Purpose: Treatment
• Official Title: A Randomized Phase II Clinical Trial of Two Dose-levels of Itraconazole in Patients With Metastatic Castration-resistant Prostate Cancer
• Study Start Date: July 2009
• Actual Primary Completion Date: May 2011
• Actual Study Completion Date: December 2013

Arms and Interventions

Arm	Intervention/treatment
Active Comparator: Low Dose; Itraconazole, 200 mg, by mouth, once daily (200 mg total daily dose)	Drug: Itraconazole 200 mg; Itraconazole, 200 mg, by mouth, once daily (200 mg total daily dose)
Active Comparator: High Dose; Itraconazole, 300 mg, by mouth, twice daily (600 mg total daily dose)	Drug: Itraconazole 300mg; Itraconazole, 300 mg, by mouth, twice daily (600 mg total daily dose)

Outcome Measures

Primary Outcome Measures :

1. To Determine the Proportion of Patients With Metastatic CRPC Who do Not Have Prostate Specific Antigen (PSA) Progression After 24 Weeks of Therapy With One of Two Dose-levels of Itraconazole: 200 mg or 600 mg Daily. [ Time Frame: Up to 24 weeks ]
   To Determine the Proportion of Patients With Metastatic CRPC Who do Not Have Prostate Specific Antigen (PSA) Progression After 24 Weeks of Therapy. "PSA progression" is defined as a 25% increase in PSA over baseline [or nadir (lowest)] and an increase in absolute PSA level by at least 2 ng/mL, both confirmed by a second value at least 4 weeks later.

Secondary Outcome Measures :

1. To Determine the Proportion of Men With ≥ 50% PSA Reduction From Baseline. [ Time Frame: Baseline and approximately 2 years from open enrollment ]
   Will be reported as the percentage of men with ≥ 50% PSA reduction from baseline.

Eligibility Criteria

• Ages Eligible for Study: 18 Years and older (Adult, Older Adult)
• Sexes Eligible for Study: Male
• Accepts Healthy Volunteers: No

Criteria

Inclusion Criteria:

• Histologically or cytologically confirmed prostate adenocarcinoma.
• Presence of distant metastases on bone scan, CT scan, or MRI scan.
• Progression after androgen deprivation (and anti-androgen withdrawal).
• Rising serum PSA (Prostate Cancer Working Group (PCWG2) definition).
• Castrate levels of serum testosterone (i.e., ≤ 50 ng/dL).
• Age > 18 years.
• ECOG performance status score ≤ 2, and/or Karnofsky score ≥ 50%.
• Life expectancy > 6 months.
• Adequate kidney, liver, and bone marrow function.
• Willingness to sign informed consent and adhere to study requirements.

Exclusion Criteria:

• Recent surgery, radiation therapy, combined androgen blockade, or investigational therapies in the last 8 weeks.
• Previous chemotherapy for metastatic prostate cancer.
• Concomitant use of second-line hormonal agents (e.g., ketoconazole, DES)
• Current use of corticosteroids, except if on a stable dose for ≥ 3 months.
• History of malabsorption syndrome (may affect itraconazole absorption).
• Allergic reactions to itraconazole or similar compounds.
• Concurrent use of drugs that interact with the CYP3A4 system (caution only).
• Presence of known brain metastases.
• Prior malignancy in the last 3 years, with some exceptions.
• Uncontrolled major infectious, cardiac, or pulmonary illnesses.
• Prolonged corrected QT interval (> 450 msec) on electrocardiography.

Contacts and Locations

Locations

United States, Maryland

Johns Hopkins Hospital

Baltimore, Maryland, United States, 21231

United States, Michigan

University of Michigan Comprehensive Cancer Center

Ann Arbor, Michigan, United States, 48109

Karmanos Cancer Center

Detroit, Michigan, United States, 48201

United States, New York

Memorial Sloan-Kettering Cancer Center

New York, New York, United States, 10021

Sponsors and Collaborators

Johns Hopkins University

Memorial Sloan Kettering Cancer Center

Investigators

• Principal Investigator: Michael A Carducci, MD; Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins

More Information

• Responsible Party: Johns Hopkins University
• ClinicalTrials.gov Identifier: NCT00887458
• Other Study ID Numbers: J0932; JHMI-IRB number: NA_00027099
• First Posted: April 24, 2009
• Results First Posted: January 27, 2014
• Last Update Posted: October 16, 2017
• Last Verified: September 2017

Keywords provided by Johns Hopkins University:

metastatic prostate cancer; castration resistant prostate cancer; rising PSA

Additional relevant MeSH terms:

Prostatic Neoplasms; Genital Neoplasms, Male; Urogenital Neoplasms; Neoplasms by Site; Neoplasms; Prostatic Diseases; Itraconazole; Hydroxyitraconazole; Antifungal Agents; Anti-Infective Agents; 14-alpha Demethylase Inhibitors; Cytochrome P-450 Enzyme Inhibitors; Enzyme Inhibitors; Molecular Mechanisms of Pharmacological Action; Steroid Synthesis Inhibitors; Hormone Antagonists; Hormones, Hormone Substitutes, and Hormone Antagonists; Physiological Effects of Drugs; Cytochrome P-450 CYP3A Inhibitors