Tobacco Toxicant ExposurePhase 1NCT01092650
Determining Levels of [D10] Phenanthrene Tetraol in Smokers' Urine
A Phase 1 study testing Deuterated phenanthrene in people with Tobacco Toxicant Exposure, run by University of Minnesota at 1 site in United States.
Trial summary
The purpose of this research study is to better understand how people respond to cancer-causing chemicals in cigarette smoke. Some people are able to get rid of these chemicals as harmless agents while others suffer damage to their cells that can ultimately result in cancer. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Tobacco Toxicant Exposure
- What is being tested?
- Deuterated phenanthrene
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 30 participants
- Where
- 1 siteUnited States
- Study dates
- Sep 2007to Dec 2011
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- smokers and non-smokers
- smoking at least 10 cigarettes daily for the past year (for smokers)
- in good physical health (no unstable medical condition)
- stable, good mental health (not currently, within past 6 months, experiencing unstable or untreated psychiatric diagnosis, including substance abuse, as determined by the DSM-IV criteria).
Who cannot join
- subjects who have, within the past 6 months, experienced unstable or untreated psychiatric diagnoses, including substance abuse, as determined by the DSM-IV criteria.
- subjects using any other tobacco or nicotine products.
- female subjects who are pregnant or nursing.
- subjects with an unstable medical condition.
Trial locations and contacts
1 site in 1 country.
United States1 site
Tobacco Use Research Center
Minneapolis, Minnesota, 55455
About this study
The purpose of this research study is to better understand how people respond to cancer-causing chemicals in cigarette smoke. Some people are able to get rid of these chemicals as harmless agents while others suffer damage to their cells that can ultimately result in cancer. We hope to develop a better understanding of how we can identify the people who are in danger of getting cancer. Participants will complete questionnaires regarding their health and smoking history. We will take blood samples to look at genes which determine how the body breaks down some tobacco-related toxins. Participants will be given a small amount of liquid to drink, containing alcohol, water, and a compound called deuterated phenanthrene (DP), which is found in cigarette smoke and in the environment. Phenanthrene is non-toxic and does not cause cancer, but this compound is broken down by the body in the same way as cancer-causing agents. We will follow the pathway of this compound as it is broken down in the body.
Read the detailed description
Forty apparently healthy smokers and non smokers (20 male, 20 female) will be recruited by advertising in the Twin Cities area. This will be done by the Tobacco Use Research Center. They will be screened in a phone call, then invited to come in for an orientation session at which consent will be obtained. Pregnant smokers will be excluded. They will visit the clinic weekly for 2 months and once monthly for 4 months for a total of 6 months participation.
At each visit they will drink 5 ml of 50:50 ethanol:water containing 10 ug [D10]phenanthrene. They will then collect their 24h urine and return it to the clinic. The urine will be analyzed for [D10]phenanthrene tetraol. The goal of the study is to determine the longitudinal stability of the amount of [D10]phenanthrene-tetraol in urine.
- Conditions
- Tobacco Toxicant Exposure
- Being tested
- Deuterated phenanthrene
- Keywords
- Tobacco toxicants, Polycyclic aromatic hydrocarbons, Smoking
- Medical subject headings
- Smoking
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Deuterated phenanthreneDrug
Deuterated phenanthrene 10 micrograms
| Study group | Role | What they receive |
|---|---|---|
| Smoked | Active comparator | Deuterated Phenanthrene spiked in a study cigarette Receives: Drug: Deuterated phenanthrene |
| Oral | Experimental | Deuterated phenanthrene in an oral dose Receives: Drug: Deuterated phenanthrene |
What is being measured
The primary outcome is the main question the study is designed to answer.
Pharmacokinetics
Deuterated phenanthrene tetraol ([D10]PheT) assessed post dosing for smoked versus oral administration.
Measured: 36 hours post dosing
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Mar 2010 (estimated)
- Study startSep 2007
- Primary completionDec 2011
- Study completionDec 2011
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (31)Papers the sponsor has linked to this study.
- Other trials for Tobacco Toxicant ExposureStudies of the same condition, open and under way.
- More trials run by University of MinnesotaThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Enrolment
- 30 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Minnesota
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Stephen S Hecht, Ph.D., Principal investigator, Masonic Cancer Center, University of Minnesota
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01092650
- Sponsor's protocol ID
- 0707M13481
- Status last verified
- Oct 2014
- First submitted
- 23 Mar 2010
- Last updated
- 27 Oct 2014
- Results posted
- No
- Data monitoring committee
- Yes
Publications
ATSDR (Agency for Toxic Substances and Disease Registry). 1990. Toxicological Profile for Polycyclic Aromatic Hydrocarbons. Acenaphthene, Acenaphthylene, Anthracene, Benzo(a)anthracene, Benzo(a)pyrene, Benzo(b)fluoranthene, Benzo(g,i,h)perylene, Benzo(k)fluoranthene, Chrysene, Dibenzo(a,h)anthracene, Fluoranthene, Fluorene, Indeno(1,2,3-c,d)pyrene, Phenanthrene, Pyrene. Prepared by Clement International Corporation, under Contract No. 205-88-0608. ATSDR/TP-90-20.
Bock, F.G. and T.L. Dao. 1961. Factors affecting the polynuclear hydrocarbon level in rat mammary glands. Cancer Res. 21: 1024-1029.
BOYLAND E, SIMS P. Metabolism of polycyclic compounds. 21. The metabolism of phenanthrene in rabbits and rats: dihydrodihydroxy compounds and related glucosiduronic acids. Biochem J. 1962 Sep;84(3):571-82. doi: 10.1042/bj0840571. No abstract available.
PubMed 13872198BOYLAND E, WOLF G. Metabolism of polycyclic compounds. 6. Conversion of phenanthrene into dihydroxydihydrophenanthrenes. Biochem J. 1950 Jun-Jul;47(1):64-9. doi: 10.1042/bj0470064. No abstract available.
PubMed 14791307Budavari, S., M.J. O'Neil and A. Smith (Eds.). 1989. The Merck Index. Merck & Co., Inc. Rahway, NJ, pp. 1143-1144.
Buening MK, Levin W, Karle JM, Yagi H, Jerina DM, Conney AH. Tumorigenicity of bay-region epoxides and other derivatives of chrysene and phenanthrene in newborn mice. Cancer Res. 1979 Dec;39(12):5063-8. No abstract available.
PubMed 498133Chang, L.H. 1943. The fecal excretion of polycyclic hydrocarbons following their administration to the rat. J.. biol. Chem. 151: 93-99.
Chaturapit S, Holder GM. Studies on the hepatic microsomal metabolism of (14C) phenanthrene. Biochem Pharmacol. 1978;27(14):1865-71. doi: 10.1016/0006-2952(78)90034-5. No abstract available.
PubMed 708468FALK HL, KOTIN P, THOMPSON S. INHIBITION OF CARCINOGENESIS. THE EFFECT OF HYDROCARBONS AND RELATED COMPOUNDS. Arch Environ Health. 1964 Aug;9:169-79. doi: 10.1080/00039896.1964.10663816. No abstract available.
PubMed 14155051GRANT G, ROE FJ. THE EFFECT OF PHENANTHRENE ON TUMOUR INDUCTION BY 3,4-BENZOPYRENE ADMINISTERED TO NEWLY BORN MICE. Br J Cancer. 1963 Jun;17(2):261-5. doi: 10.1038/bjc.1963.37. No abstract available.
PubMed 14042727HUGGINS C, YANG NC. Induction and extinction of mammary cancer. A striking effect of hydrocarbons permits analysis of mechanisms of causes and cure of breast cancer. Science. 1962 Jul 27;137(3526):257-62. doi: 10.1126/science.137.3526.257. No abstract available.
PubMed 14449781Polynuclear aromatic compounds, Part 1, Chemical, environmental and experimental data. IARC Monogr Eval Carcinog Risk Chem Hum. 1983 Dec;32:1-453. No abstract available.
PubMed 6586639Kennaway, E.L. 1924. On the cancer-producing tars and tar-fractions. J. Ind. Hyg. 5: 462-488.
LaVoie EJ, Tulley-Freiler L, Bedenko V, Hoffman D. Mutagenicity, tumor-initiating activity, and metabolism of methylphenanthrenes. Cancer Res. 1981 Sep;41(9 Pt 1):3441-7.
PubMed 7020927Mabey, W.R., J.H. Smith, R.T. Podoll, et al. 1982. Aquatic fate process data for organic priority pollutants. U.S. Environmental Protection Agency, Office of Water Regulations and Standards, Washington, D.C. EPA 440/4-81-014.
Study at a glance
From the registry record, last updated by the sponsor on 27 Oct 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Determining Levels of [D10] Phenanthrene Tetraol in Smokers' Urine
- ClinicalTrials.gov ID
- NCT01092650
- Acronym / sponsor ID
- 0707M13481
- Conditions
- Tobacco Toxicant Exposure
- Keywords
- Tobacco toxicants, Polycyclic aromatic hydrocarbons, Smoking
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 30 participants (estimated)
- Lead sponsor
- University of MinnesotaUniversity, hospital or other
- Study start
- Sep 2007
- Primary completion
- Dec 2011 (actual)
- Study completion
- Dec 2011 (actual)
- First posted
- 25 Mar 2010 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this research study is to better understand how people respond to cancer-causing chemicals in cigarette smoke. Some people are able to get rid of these chemicals as harmless agents while others suffer damage to their cells that can ultimately result in cancer. We hope to develop a better understanding of how we can identify the people who are in danger of getting cancer. Participants will complete questionnaires regarding their health and smoking history. We will take blood samples to look at genes which determine how the body breaks down some tobacco-related toxins. Participants will be given a small amount of liquid to drink, containing alcohol, water, and a compound called deuterated phenanthrene (DP), which is found in cigarette smoke and in the environment. Phenanthrene is non-toxic and does not cause cancer, but this compound is broken down by the body in the same way as cancer-causing agents. We will follow the pathway of this compound as it is broken down in the body.
Detailed description
Forty apparently healthy smokers and non smokers (20 male, 20 female) will be recruited by advertising in the Twin Cities area. This will be done by the Tobacco Use Research Center. They will be screened in a phone call, then invited to come in for an orientation session at which consent will be obtained. Pregnant smokers will be excluded. They will visit the clinic weekly for 2 months and once monthly for 4 months for a total of 6 months participation.
At each visit they will drink 5 ml of 50:50 ethanol:water containing 10 ug [D10]phenanthrene. They will then collect their 24h urine and return it to the clinic. The urine will be analyzed for [D10]phenanthrene tetraol. The goal of the study is to determine the longitudinal stability of the amount of [D10]phenanthrene-tetraol in urine.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Crossover
- Masking
- None (open label)
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Smoked | Active comparator | Drug: Deuterated phenanthreneDeuterated Phenanthrene spiked in a study cigarette |
| Oral | Experimental | Drug: Deuterated phenanthreneDeuterated phenanthrene in an oral dose |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (4 listed)
- smokers and non-smokers
- smoking at least 10 cigarettes daily for the past year (for smokers)
- in good physical health (no unstable medical condition)
- stable, good mental health (not currently, within past 6 months, experiencing unstable or untreated psychiatric diagnosis, including substance abuse, as determined by the DSM-IV criteria).
Key exclusion criteria (4 listed)
- subjects who have, within the past 6 months, experienced unstable or untreated psychiatric diagnoses, including substance abuse, as determined by the DSM-IV criteria.
- subjects using any other tobacco or nicotine products.
- female subjects who are pregnant or nursing.
- subjects with an unstable medical condition.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Deuterated phenanthreneDeuterated phenanthrene 10 micrograms | Drug | Oral, Smoked |
Primary outcome
Pharmacokinetics
Time frame: 36 hours post dosing
Deuterated phenanthrene tetraol ([D10]PheT) assessed post dosing for smoked versus oral administration.
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Oct 2014.
- BackgroundATSDR (Agency for Toxic Substances and Disease Registry). 1990. Toxicological Profile for Polycyclic Aromatic Hydrocarbons. Acenaphthene, Acenaphthylene, Anthracene, Benzo(a)anthracene, Benzo(a)pyrene, Benzo(b)fluoranthene, Benzo(g,i,h)perylene, Benzo(k)fluoranthene, Chrysene, Dibenzo(a,h)anthracene, Fluoranthene, Fluorene, Indeno(1,2,3-c,d)pyrene, Phenanthrene, Pyrene. Prepared by Clement International Corporation, under Contract No. 205-88-0608. ATSDR/TP-90-20.
- BackgroundBock, F.G. and T.L. Dao. 1961. Factors affecting the polynuclear hydrocarbon level in rat mammary glands. Cancer Res. 21: 1024-1029.
- Background: PubMed 13872198BOYLAND E, SIMS P. Metabolism of polycyclic compounds. 21. The metabolism of phenanthrene in rabbits and rats: dihydrodihydroxy compounds and related glucosiduronic acids. Biochem J. 1962 Sep;84(3):571-82. doi: 10.1042/bj0840571. No abstract available.
- Background: PubMed 14791307BOYLAND E, WOLF G. Metabolism of polycyclic compounds. 6. Conversion of phenanthrene into dihydroxydihydrophenanthrenes. Biochem J. 1950 Jun-Jul;47(1):64-9. doi: 10.1042/bj0470064. No abstract available.
- BackgroundBudavari, S., M.J. O'Neil and A. Smith (Eds.). 1989. The Merck Index. Merck & Co., Inc. Rahway, NJ, pp. 1143-1144.
- Background: PubMed 498133Buening MK, Levin W, Karle JM, Yagi H, Jerina DM, Conney AH. Tumorigenicity of bay-region epoxides and other derivatives of chrysene and phenanthrene in newborn mice. Cancer Res. 1979 Dec;39(12):5063-8. No abstract available.
- BackgroundChang, L.H. 1943. The fecal excretion of polycyclic hydrocarbons following their administration to the rat. J.. biol. Chem. 151: 93-99.
- Background: PubMed 708468Chaturapit S, Holder GM. Studies on the hepatic microsomal metabolism of (14C) phenanthrene. Biochem Pharmacol. 1978;27(14):1865-71. doi: 10.1016/0006-2952(78)90034-5. No abstract available.
- Background: PubMed 14155051FALK HL, KOTIN P, THOMPSON S. INHIBITION OF CARCINOGENESIS. THE EFFECT OF HYDROCARBONS AND RELATED COMPOUNDS. Arch Environ Health. 1964 Aug;9:169-79. doi: 10.1080/00039896.1964.10663816. No abstract available.
- Background: PubMed 14042727GRANT G, ROE FJ. THE EFFECT OF PHENANTHRENE ON TUMOUR INDUCTION BY 3,4-BENZOPYRENE ADMINISTERED TO NEWLY BORN MICE. Br J Cancer. 1963 Jun;17(2):261-5. doi: 10.1038/bjc.1963.37. No abstract available.
- Background: PubMed 14449781HUGGINS C, YANG NC. Induction and extinction of mammary cancer. A striking effect of hydrocarbons permits analysis of mechanisms of causes and cure of breast cancer. Science. 1962 Jul 27;137(3526):257-62. doi: 10.1126/science.137.3526.257. No abstract available.
- Background: PubMed 6586639Polynuclear aromatic compounds, Part 1, Chemical, environmental and experimental data. IARC Monogr Eval Carcinog Risk Chem Hum. 1983 Dec;32:1-453. No abstract available.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Stephen S Hecht, Ph.D. principal investigator
Masonic Cancer Center, University of Minnesota
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing Deuterated phenanthrene in people with Tobacco Toxicant Exposure, run by University of Minnesota at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 4 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Oct 2014. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Pharmacokinetics (time frame: 36 hours post dosing). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01092650, which also lists 31 linked publications.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Oct 2014.