Antineoplastic Agents

All Drugs and Chemicals

Doxorubicin

Liposomal doxorubicin

Hematotoxicity is caused by a number of agents such as a benzene by-product called hydroquinone and the antitumor agent doxorubicin. This is a basic research study, conducted using normal human donors, of mechanisms involved in hematotoxicity and of the protective response of human hematopoietic progenitor cells to hematotoxic agents. Tumor necrosis factor exposure protects these cells from a subsequent exposure to hematotoxic agents. The alteration of gene expression in these cells caused by tumor necrosis factor is being studied. Additionally, the tumor necrosis factor-induced biochemical pathways involved in protection of human hematopoietic progenitor cells will be studied.

Hematotoxic Effects of Particulate Exposure

Hematotoxic Effects of Benzene and Doxorubicin

National Institute of Environmental Health Sciences (NIEHS)

Neoplasms

Respiratory Tract (Lung and Bronchial) Diseases

All Conditions

Blood and Lymph Conditions

Immune System Diseases

Substance Related Disorders

Rare Diseases

Lung Neoplasms

Lymphoma

Leukemia

Leukemia, Myeloid

Leukemia, Myeloid, Acute

Poisoning

Hematologic Diseases

Hematologic Neoplasms

Neoplasms by Histologic Type

Respiratory Tract Neoplasms

Thoracic Neoplasms

Lung Diseases

Respiratory Tract Diseases

Chemically-Induced Disorders

Myeloid Leukemia

Acute Myeloid Leukemia

Lymphosarcoma

Acute Non Lymphoblastic Leukemia

Acute Graft Versus Host Disease

Nathaniel Rothman, M.D.

This study will examine the risks of workplace exposure to benzene, a substance known to lead to cancer of the blood and possibly of the lungs. It is used widely in industries and is a contaminant in the environment. Researchers from the National Cancer Institute and the China Center for Disease Control (formerly Chinese Academy of Preventive Medicine) had done previous studies of workers in manufacturing industries in China of people who worked at least 1 day from 1972 to 1987 in 12 cities in that country. Data were collected of approximately 75,000 workers exposed to benzene and 35,000 who were not, with the purpose of investigating the relationship between benzene exposure and cancer risk. For workers exposed to benzene, there was a significant risk of cancer affecting the blood cells and a 1.8-fold excess of lung cancer among them. This study will expand those findings and also identify the effects of benzene amounts and whether there is a genetic tendency for benzene poisoning. About 3,860 benzene-exposed workers from the 12 cities will be interviewed. Next-of-kin of deceased workers, and a subcohort (additional grouping) of participants will serve as a control group in the research.

Patients who have worked at places where there was exposure to benzene will have a brief physical exam and samples of cells from a mouth rinse and samples from blood will be collected to study the genetic influence on developing blood diseases from workplace exposures.

All participants or next-of-kin, for deceased, will be given a questionnaire about their work history, use of cigarettes and hair dyes, medications they take, and family history of cancer. Interviews of about 40 minutes long will be conducted at participants homes or workplaces, at a time convenient to them, and the interviews will be audiotaped.

Benzene is a known leukemogen and may cause lymphoma as well, but its ability to , cause these conditions below 10 parts per million (ppm) in air are unclear. It is currently regulated in the United States at 1 ppm as an 8-hour time-weighted average and at a 5 ppm short-term exposure level for 15 minutes. There is a critical need to assess risks related to benzene exposure under 10 ppm because it is widely used industrially and a ubiquitous contaminant in the environment.

The National Cancer Institute (NCI) and the Chinese Academy of Preventive Medicine (CAPM), whose name was recently changed to the China Center for Disease Control (CDC) previously established a cohort of 75,000 workers exposed to benzene in 12 cities in China and 35,000 unexposed comparison workers, to investigate the relationship between benzene exposure and cancer risk, from 1972 to 1987. We followed up each worker using factory records and reported results suggesting that benzene exposure under 10 ppm may be associated with increased risk of acute non-lymphocytic cancer and could also be associated with increased risk of lymphoma and lung cancer. We have now laid the groundwork for a further epidemiologic investigation in China to evaluate health risks from lower levels of benzene exposure, particularly as present in the factories during the 1990s. The cohort was followed up through 1999, and through this effort we have identified 3260 subjects for study, including cases (HLD malignancies, n= 161; benzene poisoning, n= 1040; lung cancer, n= 560) and 1500 subjects in a cohort sub-sample to be used as the comparison group. In addition, we have identified a series of cases with benzene poisoning and controls from the same factories outside of the cohort (n = 600).

We propose to contact next-of-kin of deceased subjects (essentially all cancer cases and some members of the sub-cohort are deceased), for questionnaire-based evaluation of benzene and other exposures, and to contact living subjects (primarily the benzene poisoning cases and the sub-cohort sample) for collection of questionnaires and biologic samples. The questionnaires (formatted for direct interview of living subjects or for next-of-kin) will collect information on potential confounders needed in the analysis of benzene's effects and information on work experience outside of the study cohort factories. The biologic sample collection (13 ml blood and buccal cell rinse) will provide material primarily for study of genetic polymorphisms potentially associated with benzene metabolism and disease status. The polymorphisms being studied are relatively common in the Chinese population and may be associated with a relatively modest increase in risk (1.5 to 2-fold). Written informed consent will be obtained from all next-of-kin and all live study subjects. We will attempt to enroll 3,860 study subjects or next-of-kin. The study will be carried out with Drs. Gui-Lan Li and Song-Nian Yin and colleagues from the China CDC, Beijing, China.

A Case-Cohort Study of Hematopoietic Malignancies and Related Disorders and Lung Cancer in Benzene-Exposed Workers in China

A Case - Cohort Study of Hematopoietic Malignancies and Related Disorders and Lung Cancer in Benzene-Exposed Workers in China

Benzene poisoning, Hemapoietic Malignancies and related disorders, Lung cancer

China for Disease Control (CDC)

National Cancer Institute (NCI)

Controlled Exposure to Environmental Contaminant

The research is to evaluate benzene metabolism after exposure at levels that can be found in the environment, such as the higher end concentrations in the air inside cars and buses while being driven in heavy traffic and inside private and public parking garages. To do so breath, urine, and blood samples prior to, during and after being exposed to benzene as well as benzene levels and benzene metabolites present are measured.

The research is to evaluate benzene metabolism after exposure at levels that can be found in the environment, such as the higher end concentrations in the air inside cars and buses while being driven in heavy traffic and inside private and public parking garages. To do so breath, urine, and blood samples prior to, during and after being exposed to benzene as well as benzene levels and benzene metabolites present are measured. The exposures take place in the Controlled Environmental Facility operated by the Environmental and Occupational Health Sciences Institute (EOHSI). This allows us to control the exact benzene air level and to use benzene containing 13C, a stable (non-radioactive) form of carbon, one of the atoms that make up benzene. Isotopes are different forms of the same atom. Using 13C will allow us to tell the difference between the benzene and the compounds it changes to in the body that come from our experiment compared to what is present in your body from other sources. In addition to just benzene exposure on some days the subject is also be exposed to methyl tertiary butyl ether (MTBE), another component of gasoline, to take an iron supplement pill and/or to take vitamins C and E pills. How benzene is metabolized or changed in the body will be compared for these differences to better understand how the body deals with benzene.

Modulation of Benzene Metabolism by Exposure to Environment

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Hematotoxic Effects of Particulate Exposure	NCT00015483	Cancer		18 Years - 55 Years	National Institute of Environmental Health Sciences (NIEHS)
A Case-Cohort Study of Hematopoietic Malignancies and Related Disorders and Lung Cancer in Benzene-Exposed Workers in China	NCT00559065	Lung Cancer Lymphoma Acute Non-Lymph... Benzene Poisoni... Leukemia		21 Years - 90 Years	National Institutes of Health Clinical Center (CC)
Modulation of Benzene Metabolism by Exposure to Environment	NCT00041860	Lung Diseases Cancer	Controlled Expo...	-	National Institute of Environmental Health Sciences (NIEHS)
A Case-Cohort Study of Hematopoietic Malignancies and Related Disorders and Lung Cancer in Benzene-Exposed Workers in China	NCT00559065	Lung Cancer Lymphoma Acute Non-Lymph... Benzene Poisoni... Leukemia		21 Years - 90 Years	National Institutes of Health Clinical Center (CC)

Spots Global Cancer Trial Database for benzene

Every month we try and update this database with for benzene cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Spots Global Cancer Trial Database for benzene

Every month we try and update this database with for benzene cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for benzene cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.