Metabolic Side Effects of DrugsEarly Phase 1NCT03383133
Studies of Sulfur Metabolism in Humans
A Early Phase 1 study testing SULT Allosteric Inhibition in people with Metabolic Side Effects of Drugs, run by Albert Einstein College of Medicine at 1 site in United States.
Trial summary
The study test whether the NSAID allosteric site of human sulfotransferase 1A1 (SULT1A1) is operative in humans. The study will test the effects of mefenamic acid (MEF) on the sulfonation of acetaminophen (APAP, a SULT1A1 specific substrate) and dehydroepiandrosterone (DHEA, a SULT2A1 substrate). Read more about this study
- Who is it for?
- Ages 61 to 61 years, men only
- Conditions the study is for
- Metabolic Side Effects of Drugs
- What is being tested?
- SULT Allosteric Inhibition
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 1 participants
- Where
- 1 siteUnited States
- Study dates
- 11 Jan 2018to 2 Feb 2023
- Phase
- Early 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 61 to 61 years
- Men only
- No healthy volunteers
- Adult
Who may be able to join
- Gender - one male
- Age - 61 y.o.
- Healthy
- Agreed to sign the consent form
Who cannot join
- ● None
Trial locations and contacts
1 site in 1 country.
United States1 site
Albert Einstein Collage of Medicine
The Bronx, New York, 10461
About this study
Official title: Allosteric Regulation of Cytosolic Sulfotransferases in Humans
The study test whether the NSAID allosteric site of human sulfotransferase 1A1 (SULT1A1) is operative in humans. The study will test the effects of mefenamic acid (MEF) on the sulfonation of acetaminophen (APAP, a SULT1A1 specific substrate) and dehydroepiandrosterone (DHEA, a SULT2A1 substrate). If the allosteric site is active in vivo, MEF is predicted to result in a decrease in sulfonation of APAP (MEF inhibits SULT with high affinity (Ki = 23 nM), and to have no effect on sulfonation of the DHEA (MEF has little or no effect on SULT2A1 activity).
Read the detailed description
No patient registries associated with this study.
A single, therapeutic dose of acetaminophen (APAP, 1.0 g)) or dehydroepiandrosterone (DHEA, 75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (MEF, 0.75 g). In total, 5 experiments will be performed: 1, APAP alone; 2, DHEA alone; 3, MEF alone; 4, APAP + MEF; and 5, DHEA + MEF. Each experiment will be performed in duplicate. Compounds will be taken prior to eating breakfast. One hour later, the patient has a light breakfast (Cheerios and milk, and a cup of coffee) and eats normally thereafter. Urine samples are collected at 15', 30', 1 h, 2h, 3h, 4h, 5 h, 6h, 7h, 8h, 9h, 10h, 11h, and 12h intervals following dosing. The study subject will attempt to completely empty their bladder at each urine-collection time point. The samples are weighed. A 10 ml aliquot is taken from each time point and the aliquots are stored at -20 °C. Samples (0.5 ml) are then transferred to nuclear magnetic resonance (NMR) tubes and NMR spectra are taken to assess drug metabolites in urine. Proton NMR will be performed using the 600 MHz instrument in the Einstein facility.
- Conditions
- Metabolic Side Effects of Drugs
- Being tested
- SULT Allosteric Inhibition
- Keywords
- sulfotransferase, metabolism, acetaminophen, dehydroepiandrosterone, mefenamic acid, allostery
- Medical subject headings
- Metabolic Side Effects of Drugs and Substances
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
SULT Allosteric InhibitionDrug
A single, therapeutic dose of acetaminophen (APAP, 1.0 g)) or dehydroepiandrosterone (DHEA, 75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (MEF, 0.75 g). In total, 5 experiments will be performed. Each experiment is performed in duplicate. Compounds are taken prior to eating breakfast. One hour later, the patient has a light breakfast and eats normally thereafter. Urine samples are collected at 15', 30', 1 h, 2h, 3h, 4h, 5 h, 6h, 7h, 8h, 9h, 10h, 11h, and 12h intervals following dosing. The samples are weighed. A 10 ml aliquot is taken from each time point and the aliquots are stored at -20 °C. Samples (0.5 ml) are then transferred to NMR tubes spectra are taken to assess drug metabolites in urine.
| Study group | Role | What they receive |
|---|---|---|
| SULT Allosteric Inhibition | Experimental | A single, therapeutic dose of acetaminophen (1.0 g)) or dehydroepiandrosterone (75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (0.75 g). Receives: Drug: SULT Allosteric Inhibition |
What is being measured
The primary outcome is the main question the study is designed to answer.
Acetaminophen and Dehydroepiandrosterone Conjugates
Proton NMR Signals will be used to quantitate conjugates of acetaminophen and dehydroepiandrosterone in urine.
Measured: 15min, 30min, 1hr, 2hr, 3hr, 4hr, 5hr, 6hr, 7hr, 8hr, 9hr, 10hr, 11hr, and 12hr following administration.
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted26 Dec 2017
- Study start11 Jan 2018
- Primary completion2 Feb 2023
- Study completion2 Feb 2023
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (13)Papers the sponsor has linked to this study.
- Other trials for Metabolic Side Effects of DrugsStudies of the same condition, open and under way.
- 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
- Early Phase 1
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Model description
- This study will involve only a single individual.
- Masking
- None (open label)
- Enrolment
- 1 participants (actual)
Sponsor and investigators
- Lead sponsor
- Albert Einstein College of Medicine
- Sponsor type
- University, hospital or other
- Responsible party
- Sponsor
- Investigators
- Thomas S Leyh, Ph. D., Principal investigator, The Albert Einstein College of Medicine
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03383133
- Sponsor's protocol ID
- 2017-8685
- Status last verified
- Oct 2023
- First submitted
- 19 Dec 2017
- Last updated
- 27 Oct 2023
- Results posted
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No: This study will determine the levels acetaminophen and dehydroepiandrosterone conjugates in the urine of a single individuals. The levels will be published and
Publications
Falany JL, Macrina N, Falany CN. Regulation of MCF-7 breast cancer cell growth by beta-estradiol sulfation. Breast Cancer Res Treat. 2002 Jul;74(2):167-76. doi: 10.1023/a:1016147004188.
PubMed 12186377Parker CR Jr. Dehydroepiandrosterone and dehydroepiandrosterone sulfate production in the human adrenal during development and aging. Steroids. 1999 Sep;64(9):640-7. doi: 10.1016/s0039-128x(99)00046-x.
PubMed 10503722Cook IT, Duniec-Dmuchowski Z, Kocarek TA, Runge-Morris M, Falany CN. 24-hydroxycholesterol sulfation by human cytosolic sulfotransferases: formation of monosulfates and disulfates, molecular modeling, sulfatase sensitivity, and inhibition of liver x receptor activation. Drug Metab Dispos. 2009 Oct;37(10):2069-78. doi: 10.1124/dmd.108.025759. Epub 2009 Jul 9.
PubMed 19589875Visser TJ. Role of sulfation in thyroid hormone metabolism. Chem Biol Interact. 1994 Jun;92(1-3):293-303. doi: 10.1016/0009-2797(94)90071-x.
PubMed 8033262Eisenhofer G, Coughtrie MW, Goldstein DS. Dopamine sulphate: an enigma resolved. Clin Exp Pharmacol Physiol Suppl. 1999 Apr;26:S41-53.
PubMed 10386253Swann J, Murry J, Young JA. Cytosolic sulfotransferase 1A1 regulates HIV-1 minus-strand DNA elongation in primary human monocyte-derived macrophages. Virol J. 2016 Feb 24;13:30. doi: 10.1186/s12985-016-0491-9.
PubMed 26906565Yalcin EB, More V, Neira KL, Lu ZJ, Cherrington NJ, Slitt AL, King RS. Downregulation of sulfotransferase expression and activity in diseased human livers. Drug Metab Dispos. 2013 Sep;41(9):1642-50. doi: 10.1124/dmd.113.050930. Epub 2013 Jun 17.
PubMed 23775849Wang T, Cook I, Leyh TS. The NSAID allosteric site of human cytosolic sulfotransferases. J Biol Chem. 2017 Dec 8;292(49):20305-20312. doi: 10.1074/jbc.M117.817387. Epub 2017 Oct 16.
PubMed 29038294Riches Z, Stanley EL, Bloomer JC, Coughtrie MW. Quantitative evaluation of the expression and activity of five major sulfotransferases (SULTs) in human tissues: the SULT "pie". Drug Metab Dispos. 2009 Nov;37(11):2255-61. doi: 10.1124/dmd.109.028399. Epub 2009 Aug 13.
PubMed 19679676Nagar S, Walther S, Blanchard RL. Sulfotransferase (SULT) 1A1 polymorphic variants *1, *2, and *3 are associated with altered enzymatic activity, cellular phenotype, and protein degradation. Mol Pharmacol. 2006 Jun;69(6):2084-92. doi: 10.1124/mol.105.019240. Epub 2006 Mar 3.
PubMed 16517757Falany CN, Vazquez ME, Kalb JM. Purification and characterization of human liver dehydroepiandrosterone sulphotransferase. Biochem J. 1989 Jun 15;260(3):641-6. doi: 10.1042/bj2600641.
PubMed 2764897Cook I, Wang T, Falany CN, Leyh TS. The allosteric binding sites of sulfotransferase 1A1. Drug Metab Dispos. 2015 Mar;43(3):418-23. doi: 10.1124/dmd.114.061887. Epub 2014 Dec 22.
PubMed 25534770Vietri M, De Santi C, Pietrabissa A, Mosca F, Pacifici GM. Inhibition of human liver phenol sulfotransferase by nonsteroidal anti-inflammatory drugs. Eur J Clin Pharmacol. 2000 Apr;56(1):81-7. doi: 10.1007/s002280050725.
PubMed 10853883
Study at a glance
From the registry record, last updated by the sponsor on 27 Oct 2023. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Allosteric Regulation of Cytosolic Sulfotransferases in Humans
- ClinicalTrials.gov ID
- NCT03383133
- Acronym / sponsor ID
- 2017-8685
- Conditions
- Metabolic Side Effects of Drugs
- Keywords
- sulfotransferase, metabolism, acetaminophen, dehydroepiandrosterone, mefenamic acid, allostery
- Phase
- Early Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 1 participants (actual)
- Lead sponsor
- Albert Einstein College of MedicineUniversity, hospital or other
- Study start
- 11 Jan 2018 (actual)
- Primary completion
- 2 Feb 2023 (actual)
- Study completion
- 2 Feb 2023 (actual)
- First posted
- 26 Dec 2017 (actual)
- 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 study test whether the NSAID allosteric site of human sulfotransferase 1A1 (SULT1A1) is operative in humans. The study will test the effects of mefenamic acid (MEF) on the sulfonation of acetaminophen (APAP, a SULT1A1 specific substrate) and dehydroepiandrosterone (DHEA, a SULT2A1 substrate). If the allosteric site is active in vivo, MEF is predicted to result in a decrease in sulfonation of APAP (MEF inhibits SULT with high affinity (Ki = 23 nM), and to have no effect on sulfonation of the DHEA (MEF has little or no effect on SULT2A1 activity).
Detailed description
No patient registries associated with this study.
A single, therapeutic dose of acetaminophen (APAP, 1.0 g)) or dehydroepiandrosterone (DHEA, 75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (MEF, 0.75 g). In total, 5 experiments will be performed: 1, APAP alone; 2, DHEA alone; 3, MEF alone; 4, APAP + MEF; and 5, DHEA + MEF. Each experiment will be performed in duplicate. Compounds will be taken prior to eating breakfast. One hour later, the patient has a light breakfast (Cheerios and milk, and a cup of coffee) and eats normally thereafter. Urine samples are collected at 15', 30', 1 h, 2h, 3h, 4h, 5 h, 6h, 7h, 8h, 9h, 10h, 11h, and 12h intervals following dosing. The study subject will attempt to completely empty their bladder at each urine-collection time point. The samples are weighed. A 10 ml aliquot is taken from each time point and the aliquots are stored at -20 °C. Samples (0.5 ml) are then transferred to nuclear magnetic resonance (NMR) tubes and NMR spectra are taken to assess drug metabolites in urine. Proton NMR will be performed using the 600 MHz instrument in the Einstein facility.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
- Model description
- This study will involve only a single individual.
| Arm | Type | Receives |
|---|---|---|
| SULT Allosteric Inhibition | Experimental | Drug: SULT Allosteric InhibitionA single, therapeutic dose of acetaminophen (1.0 g)) or dehydroepiandrosterone (75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (0.75 g). |
Who may qualify
- Ages
- 61 to 61 years
- Sex
- Male only
- Healthy volunteers
- Not accepted
- Age groups
- Adult
Key inclusion criteria (4 listed)
- Gender - one male
- Age - 61 y.o.
- Healthy
- Agreed to sign the consent form
Key exclusion criteria (1 listed)
- ● None
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 |
|---|---|---|
| SULT Allosteric InhibitionA single, therapeutic dose of acetaminophen (APAP, 1.0 g)) or dehydroepiandrosterone (DHEA, 75 mg) is taken orally (with 375 ml of water) either alone or simultaneously with a single, oral, therapeutic dose of mefenamic acid (MEF, 0.75 g). In total, 5 experiments will be performed. Each experiment is performed in duplicate. Compounds are taken prior to eating breakfast. One hour later, the patient has a light breakfast and eats normally thereafter. Urine samples are collected at 15', 30', 1 h, 2h, 3h, 4h, 5 h, 6h, 7h, 8h, 9h, 10h, 11h, and 12h intervals following dosing. The samples are weighed. A 10 ml aliquot is taken from each time point and the aliquots are stored at -20 °C. Samples (0.5 ml) are then transferred to NMR tubes spectra are taken to assess drug metabolites in urine. | Drug | SULT Allosteric Inhibition |
Primary outcome
Acetaminophen and Dehydroepiandrosterone Conjugates
Time frame: 15min, 30min, 1hr, 2hr, 3hr, 4hr, 5hr, 6hr, 7hr, 8hr, 9hr, 10hr, 11hr, and 12hr following administration.
Proton NMR Signals will be used to quantitate conjugates of acetaminophen and dehydroepiandrosterone in urine.
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 2023.
- Background: PubMed 12186377Falany JL, Macrina N, Falany CN. Regulation of MCF-7 breast cancer cell growth by beta-estradiol sulfation. Breast Cancer Res Treat. 2002 Jul;74(2):167-76. doi: 10.1023/a:1016147004188.
- Background: PubMed 10503722Parker CR Jr. Dehydroepiandrosterone and dehydroepiandrosterone sulfate production in the human adrenal during development and aging. Steroids. 1999 Sep;64(9):640-7. doi: 10.1016/s0039-128x(99)00046-x.
- Background: PubMed 19589875Cook IT, Duniec-Dmuchowski Z, Kocarek TA, Runge-Morris M, Falany CN. 24-hydroxycholesterol sulfation by human cytosolic sulfotransferases: formation of monosulfates and disulfates, molecular modeling, sulfatase sensitivity, and inhibition of liver x receptor activation. Drug Metab Dispos. 2009 Oct;37(10):2069-78. doi: 10.1124/dmd.108.025759. Epub 2009 Jul 9.
- Background: PubMed 8033262Visser TJ. Role of sulfation in thyroid hormone metabolism. Chem Biol Interact. 1994 Jun;92(1-3):293-303. doi: 10.1016/0009-2797(94)90071-x.
- Background: PubMed 10386253Eisenhofer G, Coughtrie MW, Goldstein DS. Dopamine sulphate: an enigma resolved. Clin Exp Pharmacol Physiol Suppl. 1999 Apr;26:S41-53.
- Background: PubMed 26906565Swann J, Murry J, Young JA. Cytosolic sulfotransferase 1A1 regulates HIV-1 minus-strand DNA elongation in primary human monocyte-derived macrophages. Virol J. 2016 Feb 24;13:30. doi: 10.1186/s12985-016-0491-9.
- Background: PubMed 23775849Yalcin EB, More V, Neira KL, Lu ZJ, Cherrington NJ, Slitt AL, King RS. Downregulation of sulfotransferase expression and activity in diseased human livers. Drug Metab Dispos. 2013 Sep;41(9):1642-50. doi: 10.1124/dmd.113.050930. Epub 2013 Jun 17.
- Background: PubMed 29038294Wang T, Cook I, Leyh TS. The NSAID allosteric site of human cytosolic sulfotransferases. J Biol Chem. 2017 Dec 8;292(49):20305-20312. doi: 10.1074/jbc.M117.817387. Epub 2017 Oct 16.
- Background: PubMed 19679676Riches Z, Stanley EL, Bloomer JC, Coughtrie MW. Quantitative evaluation of the expression and activity of five major sulfotransferases (SULTs) in human tissues: the SULT "pie". Drug Metab Dispos. 2009 Nov;37(11):2255-61. doi: 10.1124/dmd.109.028399. Epub 2009 Aug 13.
- Background: PubMed 16517757Nagar S, Walther S, Blanchard RL. Sulfotransferase (SULT) 1A1 polymorphic variants *1, *2, and *3 are associated with altered enzymatic activity, cellular phenotype, and protein degradation. Mol Pharmacol. 2006 Jun;69(6):2084-92. doi: 10.1124/mol.105.019240. Epub 2006 Mar 3.
- Background: PubMed 2764897Falany CN, Vazquez ME, Kalb JM. Purification and characterization of human liver dehydroepiandrosterone sulphotransferase. Biochem J. 1989 Jun 15;260(3):641-6. doi: 10.1042/bj2600641.
- Background: PubMed 25534770Cook I, Wang T, Falany CN, Leyh TS. The allosteric binding sites of sulfotransferase 1A1. Drug Metab Dispos. 2015 Mar;43(3):418-23. doi: 10.1124/dmd.114.061887. Epub 2014 Dec 22.
- Individual participant dataSharing planned: No. This study will determine the levels acetaminophen and dehydroepiandrosterone conjugates in the urine of a single individuals. The levels will be published and
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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.
Thomas S Leyh, Ph. D. principal investigator
The Albert Einstein College of Medicine
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Early Phase 1 study testing SULT Allosteric Inhibition in people with Metabolic Side Effects of Drugs, run by Albert Einstein College of Medicine 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 1 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 2023. 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?
Early Phase 1 (sometimes called Phase 0) studies give a very small amount of a treatment to a few people, mainly to see how the body handles it.
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?
Acetaminophen and Dehydroepiandrosterone Conjugates (time frame: 15min, 30min, 1hr, 2hr, 3hr, 4hr, 5hr, 6hr, 7hr, 8hr, 9hr, 10hr, 11hr, and 12hr following administration.). 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 NCT03383133, which also lists 13 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 2023.