Trial record 1 of 1 for:
Study of Cabozantinib (XL184) Versus Mitoxantrone Plus Prednisone in Men With Previously Treated Symptomatic Castration-resistant Prostate Cancer (COMET-2)
This study has been terminated.
(Stopped after the outcome of cabozantinib Phase 3 CRPC study XL184-307.)
Information provided by (Responsible Party):
First received: January 13, 2012
Last updated: February 19, 2015
Last verified: February 2015
Bone metastases and associated pain are a major cause of morbidity and mortality in castration-resistant prostate cancer (CRPC). Most approved therapies have shown some ability to reduce soft tissue lesions but none meaningfully impacts bone metastases (as demonstrated by lack of resolution of lesions on bone scan with these agents) or the pain associated with these metastases.
This study will evaluate the effect of cabozantinib versus mitoxantrone plus prednisone on pain response and bone scan response in men with CRPC.
Castration Resistant Prostate Cancer
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
||A Phase 3, Randomized, Double-blind, Controlled Trial of Cabozantinib (XL184) Versus Mitoxantrone Plus Prednisone in Men With Previously Treated Symptomatic Castration-resistant Prostate Cancer
Primary Outcome Measures:
Secondary Outcome Measures:
| Study Start Date:
| Study Completion Date:
| Primary Completion Date:
||October 2014 (Final data collection date for primary outcome measure)
Subjects randomized to the cabozantinib arm will also receive placebo mitoxantrone injections (color-matched with methylene blue) and placebo prednisone capsules.
There will be a maximum of 10 infusions for mitoxantrone placebo.
Tablets taken orally once daily.
Active Comparator: Mitoxantrone/prednisone
Subjects randomized to the mitoxantrone + prednisone arm will also receive placebo cabozantinib tablets.
There will be a maximum of 10 infusions for mitoxantrone.
Given by IV once every 3 weeks.
Taken twice a day orally by mouth. Commercially-obtained prednisone tablets will be over-encapsulated in order to blind identity.
|Ages Eligible for Study:
||18 Years and older (Adult, Senior)
|Genders Eligible for Study:
|Accepts Healthy Volunteers:
- Histological or cytological diagnosis of castration resistant prostate cancer (serum testosterone less than 50 ng/dL).
- Evidence of bone metastasis related to prostate cancer on bone scans.
- Documented pain from bone metastases that requires opioid narcotic intervention.
- Adopted a narcotic regimen that consists of one sustained release opioid agent taken daily for chronic pain and one immediate release opioid agent for breakthrough pain.
- Received prior docetaxel and either abiraterone or MDV3100 treatment and has evidence of investigator assessed prostate cancer progression on each agent independently.
- Maintenance of LHRH agonist or antagonist unless treated with orchiectomy.
- Recovered from toxicities related to any prior treatments, unless the toxicities are clinically non significant or easily manageable.
- Adequate organ and marrow function.
- A left-ventricular ejection fraction (LVEF) of >/= 50% assessed by echocardiogram or MUGA (multigated acquisition scan).
- Capable of understanding and complying with the protocol requirements (including having the ability to access an interactive voice recognition system and self-report pain and narcotic use) and signed the informed consent form.
- Sexually active fertile patients and their partners must agree to use medically accepted methods of contraception (eg, barrier methods, including male condom, female condom, or diaphragm with spermicidal gel) during the course of the study and for 3 months after the last dose of study treatment.
- Prior treatment with cabozantinib or mitoxantrone.
- Treatment with docetaxel, abiraterone, or MDV3100 in the last 2 weeks; or with any other type of cytotoxic or investigational anticancer agent in the last 2 weeks.
- Radiation therapy in the last 4 weeks (includes radiation targeting bone metastases), radionuclide treatment in the last 6 weeks, or radiation therapy to the thoracic cavity (unless radiation targets bone metastases) in the past 3 months.
- Treatment with serotonergic psychiatric medication(s) in the last 2 weeks (5 weeks for fluoxetine).
- Known brain metastases or uncontrolled epidural disease.
- Requires concomitant treatment, in therapeutic doses, with anticoagulants such as warfarin or warfarin-related agents, heparin, thrombin or FXa (coagulation factor X) inhibitors, or antiplatelet agents (eg, clopidogrel). Low dose aspirin (above low dose levels for cardioprotection per local applicable guidelines), low-dose warfarin (≤ 1 mg/day), and prophylactic low molecular weight heparin are permitted.
- Uncontrolled, significant intercurrent illness including, but not limited to, cardiovascular disorders, gastrointestinal disorders, active infections, non-healing wounds, recent surgery.
- Clinically significant hematemesis or hemoptysis of > 0.5 teaspoon of red blood, or other signs indicative of pulmonary hemorrhage in the last 3 months, or history of other significant bleeding in the past 6 months.
- Cavitating pulmonary lesion(s) or a lesion invading or encasing a major blood vessel.
- Corrected QT interval (QTc) > 500 ms in the last 4 weeks.
- Unable to swallow capsules or tablets or tolerate infusions.
- Previously-identified allergy or hypersensitivity to components of the study treatment formulations investigator or designee.
- History of another malignancy (except non-melanoma skin cancer, adequately treated stage I colon cancer, superficial transitional carcinoma of the bladder) in the past 2 years.
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For general information, see Learn About Clinical Studies.
Please refer to this study by its ClinicalTrials.gov identifier: NCT01522443
History of Changes
|Other Study ID Numbers:
|Study First Received:
||January 13, 2012
||February 19, 2015
||United States: Food and Drug Administration
Canada: Health Canada
United Kingdom: Medicines and Healthcare Products Regulatory Agency
Australia: Department of Health and Ageing Therapeutic Goods Administration
Ireland: Irish Medicines Board
Keywords provided by Exelixis:
castration resistant prostate cancer
Additional relevant MeSH terms:
ClinicalTrials.gov processed this record on August 25, 2016
Genital Neoplasms, Male
Neoplasms by Site
Genital Diseases, Male
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Antineoplastic Agents, Hormonal
Sensory System Agents
Peripheral Nervous System Agents
Topoisomerase II Inhibitors
Molecular Mechanisms of Pharmacological Action