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Spots Global Cancer Trial Database for Relationship Between Mitochondrial Dysfunction and Fatique in Cancer Patients Following External Beam Radiation Therapy

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Trial Identification

Brief Title: Relationship Between Mitochondrial Dysfunction and Fatique in Cancer Patients Following External Beam Radiation Therapy

Official Title: Relationship Between Mitochondrial Dysfunction and Fatique in Cancer Patients Following External Beam Radiation Therapy

Study ID: NCT01143467

Conditions

Cancer
Fatigue

Interventions

Study Description

Brief Summary: Background: - Fatigue is a very common early and late side effect of cancer treatment, including radiation therapy. The cause of fatigue is poorly understood, making it hard to diagnose and treat. More research is necessary to understand why patients receiving cancer treatment experience fatigue. Changes in mitochondria, parts of body cells that help provide energy to the cell, may contribute to fatigue. Researchers are interested in looking at blood chemicals and mitochondrial genes of cancer patients to study those associated with fatigue. Objectives: - To study the relationship between fatigue and the effects of cancer treatment. Eligibility: * Men at least 18 years of age who have been diagnosed with localized prostate cancer and are scheduled to receive external beam radiation therapy. * Participants on study 09-NR-0088, Molecular-Genetic Correlates of Fatigue in Cancer Patients Receiving External Beam Radiation Therapy, are also eligible. Design: * This study requires three outpatient visits to the NIH Clinical Center. * Participants will be seen before they start radiation treatment, at the middle of treatment, and at the end of treatment. Each visit will take less than 30 minutes to complete. * Participants will complete questionnaires that ask about fatigue and depression. * Participants will provide blood samples for research testing and potential HIV testing. * No treatment will be provided as part of this protocol.

Detailed Description: Fatigue is a common early and chronic adverse effect of radiation but its correlates and prevalence are poorly understood. Over 40% of cancer patients receive radiation therapy during the management of their disease. While external beam intensity modulated radiation therapy (EBRT/IMRT) successfully increases disease-free survival rates and life expectancy, ionizing radiation leads to increased treatment-related adverse effects including fatigue. Multidimensional causes and mechanisms of cancer-related fatigue remain unclear, and early biomarkers prognostic for radiation-induced fatigue have not been identified. There is evidence that an increase in reactive oxygen species (ROS) formation will cause cellular damage resulting in dysfunction to mitochondria. ROS are considered one of the major direct causes of ionizing radiation-induced damage, resulting in a number of adverse effects (e.g. fatigue, nausea, vomiting, diarrhea, peripheral neuropathy, and cognitive function impairment) that reduce the efficacy of treatment. Mitochondrial dysfunction is involved in all clinical conditions including fatigue which are associated with the deficient energy metabolism of oxidative phosphorylation. Mitochondria are vulnerable to ROS which are generated endogenously (e.g. mitochondrial superoxide) and exogenously (e.g. ionizing radiation, inflammation). Once mitochondrial proteins are damaged, the affinity of substrates or enzymes is decreased resulting in mitochondrial dysfunction including reduced ATP production, increased ROS generation, and initiated apoptosis signaling. While mitochondrial dysfunction has been implicated in a variety of clinical fatigue states, the physiological pathways and pathophysiological mechanisms are complicated and remain unclear. The primary purpose of this study is to explore the relationships between mitochondrial dysfunction and fatigue in prostate cancer patients receiving EBRT. Specific aims include: (1) identify mitochondrial-related gene expression profile changes over time; (2) quantify the severity of perceived fatigue before, during and at the end of radiation therapy; (3) determine possible pathways and early biomarkers of mitochondrial dysfunction related to fatigue in patients with prostate cancer receiving EBR. Blood samples and self-administrated questionnaires are collected at baseline, midpoint and the end of EBRT. Human mitochondrial PCR array will be utilized to identify differential regulation of genes involved in mitochondrial dysfunction at the different time points compared with gene expression from the baseline samples.

Eligibility

Minimum Age: 18 Years

Eligible Ages: ADULT, OLDER_ADULT

Sex: MALE

Healthy Volunteers: No

Locations

National Institutes of Health Clinical Center, 9000 Rockville Pike, Bethesda, Maryland, United States

Contact Details

Name: Leorey N Saligan, C.R.N.P.

Affiliation: National Institute of Nursing Research (NINR)

Role: PRINCIPAL_INVESTIGATOR

Useful links and downloads for this trial

Clinicaltrials.gov

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