- ICH GCP
- US Clinical Trials Registry
- Klinisk forsøg NCT01437033
Breath Test for Chemicals (Volatile Organic Compounds)
A Pilot Study of a Breath Test for Assessment of Volatile Organic Compounds
Background:
- Some types of cancer, like cancer of the esophagus, are difficult to detect at an early stage. A possible detection method involves collecting breath samples to look for chemicals that may be signs of cancer. However, more research is needed to determine how different chemicals appear in different breath samples. This study will involve healthy volunteers.
Objectives:
- To study chemicals appearing in breath samples of healthy volunteers.
Eligibility:
- Healthy volunteers between 30 and 60 years of age.
Design:
- Participants will fast overnight (midnight to morning) and then provide two breath samples taken 5 minutes apart.
- Breath samples will be collected on days 1, 49, and 98 of the study
Studieoversigt
Status
Betingelser
Detaljeret beskrivelse
Background:
Although breath tests are common for specific uses where the biomarker is highly concentrated (e .g. alcohol, urea for Helicobacter prylori infection), lower concentration compounds in the breath can also provide information on exogenous exposures and endogenous metabolic processes.
Employing standardized collection techniques and high sensitivity measurement technologies have shown that breath profiles can accurately identify people with diseases such as breast cancer and lung cancer.
Breath profiling technologies have great potential as non-invasive tools for diagnosis and risk stratification of precancerous disease as well as elucidation of the causes of cancer.
Prior to using breath profiles for these purposes it is essential to assess how much of the breath profile and which parts of the breath profile are relatively stable over a period of time.
Objectives:
The primary objective of this pilot study is to assess the intra-individual variability of breath profiles sampled over a period of 98 days.
Eligibility:
DCEG volunteers aged 30-60 years, inclusive.
Design:
Pilot study.
Five DCEG volunteers will be enrolled for this study.
We will assess breath profiles sampled in duplicate at three time periods (days 1, 49 and 98).
We will calculate a coefficients of variation (CV) to determine the proportion and parts of the breath profile which have values less than 10% when collected on the same day,49 days apart, and 98 days apart.
Undersøgelsestype
Tilmelding (Faktiske)
Kontakter og lokationer
Studiesteder
-
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Maryland
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Bethesda, Maryland, Forenede Stater, 20892
- National Cancer Institute (NCI), 9000 Rockville Pike
-
-
Deltagelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
Tager imod sunde frivillige
Køn, der er berettiget til at studere
Beskrivelse
- INCLUSION CRITERIA:
DCEG volunteers aged 30-60 years, inclusive.
EXCLUSION CRITERIA:
Aged less than 30 years. Aged 61 years or older. Individuals who identify themselves to be in any one of the following categories over the next 4 month period:
- Plan to initial a large change in their daily amount of physical activity
- Plan to make large changes to their diet (reduce caloric intake, become a vegetarian etc)
- May possibly move away from the area for a new job, sabbatical, retirement etc
- Plan to attempt to become pregnant
- Have limited availability for any reason including prolonged vacation or business travel
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
Hvad måler undersøgelsen?
Primære resultatmål
Resultatmål |
Tidsramme |
|---|---|
|
Statistics of robustness (CV, ICCs)
Tidsramme: 98 days
|
98 days
|
Samarbejdspartnere og efterforskere
Sponsor
Efterforskere
- Ledende efterforsker: Michael B Cook, M.D., National Cancer Institute (NCI)
Publikationer og nyttige links
Generelle publikationer
- Cook MB, Dawsey SM, Diaw L, Blaser MJ, Perez-Perez GI, Abnet CC, Taylor PR, Albanes D, Virtamo J, Kamangar F. Serum pepsinogens and Helicobacter pylori in relation to the risk of esophageal squamous cell carcinoma in the alpha-tocopherol, beta-carotene cancer prevention study. Cancer Epidemiol Biomarkers Prev. 2010 Aug;19(8):1966-75. doi: 10.1158/1055-9965.EPI-10-0270. Epub 2010 Jul 20.
- Vizcaino AP, Moreno V, Lambert R, Parkin DM. Time trends incidence of both major histologic types of esophageal carcinomas in selected countries, 1973-1995. Int J Cancer. 2002 Jun 20;99(6):860-8. doi: 10.1002/ijc.10427. Erratum In: Int J Cancer 2002 Oct 20;101(6):599.
- Perera FP. Cancer: the big questions to address in coming years. Cancer Epidemiol Biomarkers Prev. 2011 Apr;20(4):571-3. doi: 10.1158/1055-9965.EPI-11-0184. No abstract available.
Datoer for undersøgelser
Studer store datoer
Studiestart
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først opslået (Skøn)
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Andre undersøgelses-id-numre
- 999911243
- 11-C-N243
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