Se-Methyl-Seleno-L-Cysteine or Selenomethionine in Preventing Prostate Cancer in Healthy Participants

This study is ongoing, but not recruiting participants.
Sponsor:
Information provided by (Responsible Party):
National Cancer Institute (NCI)
ClinicalTrials.gov Identifier:
NCT01497431
First received: December 20, 2011
Last updated: September 16, 2014
Last verified: May 2014
  Purpose

This randomized phase I trial studies the side effects and the best dose of Se-methyl-seleno-L-cysteine or selenomethionine in preventing prostate cancer in healthy participants. Chemoprevention is the use of certain drugs to keep cancer from forming. The use of Se-methyl-seleno-L-cysteine or selenomethionine, two different types of selenium compounds, may prevent prostate cancer from forming.


Condition Intervention Phase
Healthy, no Evidence of Disease
Prostate Cancer
Dietary Supplement: selenium
Other: placebo
Other: laboratory biomarker analysis
Other: pharmacological study
Drug: Se-methyl-seleno-L-cysteine
Phase 1

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Investigator)
Primary Purpose: Prevention
Official Title: Phase I Multiple Dose Study of 12-Week Treatment by Se-Methyl-L-Cysteine(MSC) and L SeMet in Adult Males

Resource links provided by NLM:


Further study details as provided by National Cancer Institute (NCI):

Primary Outcome Measures:
  • Clinical toxicity of Se-methyl-seleno-L-cysteine according to the NCI CTCAE version 4.0 [ Time Frame: Up to 112 days ] [ Designated as safety issue: Yes ]
    The safety and tolerability data will be summarized using descriptive statistics, by cohort and for all cohorts combined compared to placebo. Reported adverse events will be looked at for possible differences, where appropriate, using graphical methods.

  • Clinical toxicity of Se-methyl-L-cysteine compared to selenium after multiple doses, according to the NCI CTCAE version 4.0 [ Time Frame: Up to 112 days ] [ Designated as safety issue: Yes ]
    The safety and tolerability data will be summarized using descriptive statistics, by cohort and for all cohorts combined compared to placebo. Reported adverse events will be looked at for possible differences, where appropriate, using graphical methods.


Secondary Outcome Measures:
  • Characterization of the pharmacokinetics of Se in the forms Se-methyl-seleno-L-cysteine and selenium at multiple doses [ Time Frame: At baseline, and at and .5, 1, 1.5, 2, 3, 4, 6, 8, 10 and 12 hrs after dosing on days 1 and between days 70 and 84 ] [ Designated as safety issue: No ]
    The pharmacokinetic variables will be tabulated, and descriptive statistics calculated for each cohort, using established pharmacokinetic analysis methods. Plasma and urine pharmacokinetic parameters will be summarized graphically and by arithmetic or geometric means and coefficients of variations for each cohort.


Enrollment: 66
Study Start Date: November 2011
Primary Completion Date: June 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Arm I (Se-methyl-seleno L-cysteine)
Participants receive Se-methyl-seleno L-cysteine on days 1-84.
Other: laboratory biomarker analysis
Correlative studies
Other: pharmacological study
Correlative studies
Other Name: pharmacological studies
Drug: Se-methyl-seleno-L-cysteine
Given PO
Other Names:
  • methylselenocysteine
  • MSC
Experimental: Arm II (selenomethionine)
Participants receive selenomethionine PO on days 1-84.
Dietary Supplement: selenium
Given PO
Other Name: Se
Other: laboratory biomarker analysis
Correlative studies
Other: pharmacological study
Correlative studies
Other Name: pharmacological studies
Placebo Comparator: Arm III (placebo)
Participants receive placebo PO on days 1-84.
Other: placebo
Given PO
Other Name: PLCB
Other: laboratory biomarker analysis
Correlative studies
Other: pharmacological study
Correlative studies
Other Name: pharmacological studies

Detailed Description:

PRIMARY OBJECTIVES:

I. To determine the individual toxicity profiles of Se-methyl-seleno-L-cysteine (methyl selenocysteine; MSC) and selenomethionine (SeMet) administered to cohorts of men daily for twelve weeks, with dose escalation with each successive cohort.

SECONDARY OBJECTIVES:

I. To measure the pharmacokinetics of selenium, according to form (MSC vs SeMet): MSC and SeMet impacts on plasma, albumin, and urinary concentrations of selenium over 48 hours on dosing days 1 and 84.

II. To evaluate the pharmacodynamics of selenium by form (MSC vs SeMet): plasma, albumin, and urinary Selenoprotein P (Sepp1) concentrations and glutathione peroxidase (GPx) activity over 48 hours on dosing days 1 and 84.

III. To store plasma and formed elements (red cells plus platelets) for future analysis of methyl selenol and other key selenium species, when those assays become available.

OUTLINE: This is a dose-escalation study. Participants are randomized to 1 of 3 treatment arms.

ARM I: Participants receive Se-methyl-seleno-L-cysteine orally (PO) on days 1-84.

ARM II: Participants receive selenomethionine PO on days 1-84.

ARM III: Participants receive placebo PO on days 1-84.

After completion of study treatment, patients are followed up on day 112.

  Eligibility

Ages Eligible for Study:   40 Years to 80 Years
Genders Eligible for Study:   Male
Accepts Healthy Volunteers:   Yes
Criteria

Inclusion Criteria:

  • Total body weight between 50 and 115 kg (110 and 250 lbs)
  • Hemoglobin (Hgb) > 12 mg/dL
  • Platelet count > 100,000/μL
  • Absolute neutrophil count (ANC) > 1000/μL
  • Creatinine =< institutional upper limit of normal (ULN)
  • Serum glutamate pyruvate transaminase (SGPT) and serum glutamic oxaloacetic transaminase (SGOT) < 2.0 x ULN
  • Total bilirubin =< ULN (participants with a higher level of bilirubin presumed due to familial metabolism will be considered on an individual basis)
  • Life expectancy greater than 3 years
  • Participants must agree to use adequate contraception (barrier method of birth control; abstinence) from time of screening until study completion (i.e., for at least 2 weeks after last dose of study drug)
  • Ability to understand and the willingness to sign a written informed consent document
  • Agree to refrain from use of selenium (Se) supplements (other than the 100 mcg dose common in multivitamins) or Se-containing drugs while on study between 30 days before study drug initiation and Day 84

Exclusion Criteria:

  • Not willing to remain at Roswell Park Cancer Institute (RPCI), and in follow up, as required
  • Presence of medical conditions which, in the opinion of the investigator, would place either the participant or the integrity of the data at risk
  • Serum creatinine > ULN, SGOT or SGPT >= 2.0 x ULN, or bilirubin > ULN
  • Treatment with an investigational drug within 30 days prior to the dose of study drug
  • Use of selenium [Se] supplements greater than the 100 mcg dose common in multivitamins between 30 days before study drug initiation and Day 84
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to investigational agent (e.g., reaction to other Se supplements)
  • Participants who have donated 1 unit of blood within 30 days prior to the first dose of investigational agent
  • Eastern Cooperative Oncology Group (ECOG) performance status > 1
  • Diagnosed with cancer, other than non-melanoma skin cancer, in last 2 years
  • Under treatment for any cancer
  • Use of glucose-lowering agents or a condition that would make a fast from 10:00 pm the evening before until 11:00 am on days 1 and 84 hazardous
  • American Urological Association (AUA) total symptom score > 10 or any individual symptom score of greater than or equal to 4
  • Psychiatric illness which would prevent compliance with the intervention or would prevent the patient from providing informed consent
  • Medical conditions which in the opinion of the treating physician would make this protocol unreasonably hazardous for the participant
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01497431

Locations
United States, Illinois
Northwestern University
Chicago, Illinois, United States, 60611
United States, New York
Roswell Park Cancer Institute
Buffalo, New York, United States, 14263
United States, Tennessee
Vanderbilt-Ingram Cancer Center
Nashville, Tennessee, United States, 37232
Sponsors and Collaborators
Investigators
Principal Investigator: Raymond Bergan Northwestern University
  More Information

No publications provided

Responsible Party: National Cancer Institute (NCI)
ClinicalTrials.gov Identifier: NCT01497431     History of Changes
Other Study ID Numbers: NCI-2012-00085, NCI-2012-00085, CDR0000717828, I 182210, NWU09-4-03, P30CA060553, N01CN35157
Study First Received: December 20, 2011
Last Updated: September 16, 2014
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Prostatic Neoplasms
Genital Neoplasms, Male
Urogenital Neoplasms
Neoplasms by Site
Neoplasms
Genital Diseases, Male
Prostatic Diseases
Selenomethylselenocysteine
Selenium
Anticarcinogenic Agents
Protective Agents
Physiological Effects of Drugs
Pharmacologic Actions
Antineoplastic Agents
Therapeutic Uses
Antioxidants
Molecular Mechanisms of Pharmacological Action
Trace Elements
Micronutrients
Growth Substances

ClinicalTrials.gov processed this record on October 01, 2014