SepsisPhase 2NCT03278730
Efficacy of Para-Tyrosine Supplementation on the Survival and Clinical Outcome in Patients With Sepsis
A Phase 2 study testing Para-Tyrosine supplementation in people with Sepsis, run by University of Pecs at 2 sites in Hungary.
Trial summary
Meta-and ortho-Tyrosine are known markers of oxidative stress, while the physiological isomer, para-Tyrosine is suggested the antagonize the effects of meta- and ortho-Tyrosine. The changes in the serum levels of meta- and ortho-Tyrosine have been found to be paralel to that of the common sepsis markers. Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- Sepsis
- What is being tested?
- Para-Tyrosine supplementation
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 296 participants
- Where
- 2 sitesHungary
- Study dates
- Jan 2027to 28 Feb 2027
- Phase
- Phase 2
- 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 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Subjects must meet the following inclusion criteria to be eligible for the study:
- Are able to provide written informed consent (either the patient or the person entitled by legislation to consent on behalf of the patient)
- Male and female patients ≥ 18 years
- Have a current primary diagnosis of sepsis based on the the third international consensus definitions for sepsis and septic shock (Sepsis-3)Willing and able to comply with all aspects of the protocol
- Females of childbearing potential must have negtive serum pregnancy test az screening. (All females will be considered to be of childbearing potential unless they are postmenopausal i.e. amenorrheic for at least 12 consecutive months, in the appropriate age group and without other known or suspected cause or have been sterilized surgically i.e. bilateral tubal ligation, total hysterectomy, or bilateral oophorectomy, all with surgery at least 1 month before dosing)
Who cannot join
- Subjects must not have any of the following criteria to be eligible for the study:
- Females who are pregnant (positive β-hCG test at screening) or breastfeeding
- chronic use of steroids or immunosuppressive drugs within the past 3 months
- other therapy influencing the immune system within the past 3 months (radiotherapy, chemotherapy etc.)
- malignant hematologic disease
- jejunal tube feeding
Show all 12Show fewer
- any other significant illness in the medical history ongoing in the preceeding 1 month, which may have an influence on the survival and clinical outcome of the patients (e.g severe chronic heart failure NYHA III-IV., AMI, stroke, major surgery, COPD, renal failure, hepatic failure, hepatic cirrhosis etc.)
- Life expectancy less, than 1 months according to the judgement of the Investigator (even without significant illness, due to age or general status of the patient)
- Hypersensitivity to any of the excipients of the study product
- Known to be human immunodeficiency virus (HIV) positive
- Active viral hepatitis (B or C) as demonstrated by positive serology
- History of drug or alcohol dependency or abuse within approximately the last 2 years
Trial locations and contacts
2 sites in 1 country.
Hungary2 sites
2nd Department of Medicine and Nephrological Center
Pécs, Baranya, 7624
Department of Anaesthesiology and Intensive Care
Pécs, Baranya, 7624
About this study
Official title: Phase 2 Single Center, Randomized, Placebo-controlled, Double-blind, Parallel Group Study to Evaluate Efficacy of Para-Tyrosine Supplementation on the Survival and Clinical Outcome in Patients With Sepsis
Meta-and ortho-Tyrosine are known markers of oxidative stress, while the physiological isomer, para-Tyrosine is suggested the antagonize the effects of meta- and ortho-Tyrosine. The changes in the serum levels of meta- and ortho-Tyrosine have been found to be paralel to that of the common sepsis markers. The hypothesis of the study is, that supplementation of para-Tyrosine (p-Tyr) in the early phase of sepsis may diminish some specific inflammatory procedures and thus may have a favourable impact on the disease progress, and consequently on the mortality.
Read the detailed description
Data suggest, that among the amino acids, the meta- and ortho- isomers of tyrosine are potential markers of oxydative stress. The changes in their serum levels (and urinary excretion) in sepsis were found to be parallel to the changes of the common inflammatory markers, i.e. C-reactive protein (CRP) and pro-calcitonin (PCT). However, para-Tyrosine, which is the isomer physiologically present, seemed to have different kinetics. Furthermore, according to the observations, pathological processes linked to the inflammation could be attenuated or partially or completely reversed by para-tyrosine.
The hypothesis of the study is, that supplementation of para-Tyrosine (p-Tyr) in the early phase of sepsis may diminish some specific inflammatory procedures and thus may have a favourable impact on the disease progress, and consequently on the mortality.
The primary objective of the study is to evaluate, whether oral P-Tyr supplementation reduces mortality compared to placebo group during the ICU stay in patients with sepsis.
The primary endpoint is the comparison of mortality starting from randomization and start of treatment (which should be on the same day) during the period of ICU stay between the active treatment group and placebo group. The secondary objectives of the study are:
to evaluate whether supplementation of p-Tyr has effect on clinical outcome of sepsis compared to placebo in patients receiving appropriate standard care; to evaluate the effect of p-Tyr supplementation on 28-day survival of patients with sepsis; to evaluate, whether the treatment can reduce the time of the ICU stay, to evaluate the effect on overall mortality of patients with sepsis during their hospitalization, to evaluate the effect of p-Tyr supplemetation on the overall hospitalization time, to evaluate the safety of the investigational product. The investigators wish to explore To explore whether serum level of p-Tyr can be maintained with the oral supplementation; dynamics and interrelation of the levels of oxidative stress markers (o- and m-Tyr) and the physiologic isomer of Tyr (p-Tyr) and Phenylalanine (Phe) and the correlation of o-Tyr and m-Tyr serum levels and other parameters of inflammation.
- Conditions
- Sepsis
- Being tested
- Para-Tyrosine supplementation, Placebo solution
- Keywords
- sepsis, para-Tyrosine, ortho-Tyrosine, meta-Tyrosine
- Medical subject headings
- Sepsis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Para-Tyrosine supplementationDrug
Patients will recieve the study drug during their stay at the ICU, but for a maximum of 7 days. The study drug is 3x2 gramms of para-Tyrosine, which will be dispensed and administered in a form of oral suspension via a nasogastric tube.
Placebo solutionDrug
Patients will recieveplacebo during their stay at the ICU, but for a maximum of 7 days. The study drug is 3x2 gramms of placebo, which will be dispensed and administered in a form of oral suspension via a nasogastric tube.
| Study group | Role | What they receive |
|---|---|---|
| Para-Tyrosine intervention | Active comparator | The patients will receive the study drug during their stay at the ICU but for a maximum of 7 days.
Study drug will be dispensed by a nominated member of the study team and administered to the patients by the ICU staff via nasogastric tube in form of oral suspension. The content of the hard capsules will be dissolved in 20 ml of tap water before the dosing.
Drug name: Tyrosine. Strength 500 mg. Oral dose form: hard capsule. Number of Dispensed at frequency of 3x2 g daily. Duration of administration: 4 to 7 days. Receives: Drug: Para-Tyrosine supplementation |
| Placebo | Placebo comparator | The patients will receive the study drug during their stay at the ICU but for a maximum of 7 days.
Study drug will be dispensed by a nominated member of the study team and administered to the patients by the ICU staff via nasogastric tube in form of oral suspension. The content of the hard capsules will be dissolved in 20 ml of tap water before the dosing.
Drug name: Placebo.. Strength N/A. Oral dose form: capsule matching to Tyrosine capsule. Number of Dispnsed an frequency 3x2 g daily. Duration of administration: 4 to 7 days. Receives: Drug: Placebo solution |
What is being measured
The primary outcome is the main question the study is designed to answer.
Mortality
Comparison of mortality starting from randomization and start of treatment (which should be on the same day) during the period of ICU stay between the active treatment group and placebo group.
Measured: 30 days
Secondary outcomes (6)
Effect of para-Tyrosine supplementation on the clinical outcome of sepsis
The investigators wish to evaluate whether supplementation of p-Tyr has effect on clinical outcome (appearance of organ failures due to sepsis: renal failure, respiratory failure, coagulation disorders, hepatic failure, cardiac failure, need for vasopressors, CH balance, nitrogen-balance) of sepsis compared to placebo in patients receiving appropriate standard care. The investigators wish to assess wether para-Tyrosine supplementation can ameliroate the time course and severity of sepsis
Measured: 30 days
Long term effects of para-Tyrosine supplementation on survival
The investigators would like to evaluate the effect of p-Tyr supplementation on 28-day survival of patients with sepsis based on the patients' electronic documentation
Measured: 28 days
Reduction in the time of ICU stay
The investigators shall evaluate, whether the treatment can reduce the time of the ICU stay
Measured: 30 days
Overall mortality
The investigators will evaluate the effect on overall mortality of patients with sepsis during their hospitalization
Measured: 60 days
Hospitalization time
The investigators will evaluate the effect of p-Tyr supplemetation on the overall hospitalization time
Measured: 60 days
Safety and tolerability of para-Tyrosine supplementation (Incidence of Treatment-Emergent Adverse Events)
The investigators wish to evaluate the safety of the investigational product: Treatment-Emergent Adverse Events and Treatment-Emergent Serious Adverse Events shall be recorded, using physiological parameters such as impairment in renal and hepatic function, bone marrow toxicity, severe blood pressure changes, tachycardia etc.
Measured: 60 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted12 Sep 2017
- Study startJan 2027 (estimated)
- Primary completion1 Jan 2027 (estimated)
- Study completion28 Feb 2027 (estimated)
Why it stopped: Lack of resources to start
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (25)Papers the sponsor has linked to this study.
- Other trials for SepsisStudies 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
- Phase 2
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Model description
- The objective is to evaluate, whether p-Tyr supplementation reduces the ICU mortality of the patients with sepsis comparing to placebo group
- Masking
- Quadruple blind
- Who is masked
- Participant, Care provider, Investigator, Outcomes assessor
- Enrolment
- 296 participants (estimated)
Sponsor and investigators
- Lead sponsor
- University of Pecs
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, István Wittmann, University of Pecs
- Investigators
- István Wittmann, MD,PhD,DSc, Principal investigator, University of Pecs
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT03278730
- Sponsor's protocol ID
- PTE-2015-02
- Status last verified
- Mar 2025
- First submitted
- 1 Sep 2017
- Last updated
- 30 Mar 2025
- Results posted
- No
- Data monitoring committee
- Yes
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Publications
Brasnyo P, Molnar GA, Mohas M, Marko L, Laczy B, Cseh J, Mikolas E, Szijarto IA, Merei A, Halmai R, Meszaros LG, Sumegi B, Wittmann I. Resveratrol improves insulin sensitivity, reduces oxidative stress and activates the Akt pathway in type 2 diabetic patients. Br J Nutr. 2011 Aug;106(3):383-9. doi: 10.1017/S0007114511000316. Epub 2011 Mar 9.
PubMed 21385509Bernard GR, Wheeler AP, Russell JA, Schein R, Summer WR, Steinberg KP, Fulkerson WJ, Wright PE, Christman BW, Dupont WD, Higgins SB, Swindell BB. The effects of ibuprofen on the physiology and survival of patients with sepsis. The Ibuprofen in Sepsis Study Group. N Engl J Med. 1997 Mar 27;336(13):912-8. doi: 10.1056/NEJM199703273361303.
PubMed 9070471Bone RC, Balk RA, Cerra FB, Dellinger RP, Fein AM, Knaus WA, Schein RM, Sibbald WJ. Definitions for sepsis and organ failure and guidelines for the use of innovative therapies in sepsis. The ACCP/SCCM Consensus Conference Committee. American College of Chest Physicians/Society of Critical Care Medicine. Chest. 1992 Jun;101(6):1644-55. doi: 10.1378/chest.101.6.1644.
PubMed 1303622Dandona P, Mohanty P, Hamouda W, Ghanim H, Aljada A, Garg R, Kumar V. Inhibitory effect of a two day fast on reactive oxygen species (ROS) generation by leucocytes and plasma ortho-tyrosine and meta-tyrosine concentrations. J Clin Endocrinol Metab. 2001 Jun;86(6):2899-902. doi: 10.1210/jcem.86.6.7745.
PubMed 11397907Dellinger RP, Levy MM, Rhodes A, Annane D, Gerlach H, Opal SM, Sevransky JE, Sprung CL, Douglas IS, Jaeschke R, Osborn TM, Nunnally ME, Townsend SR, Reinhart K, Kleinpell RM, Angus DC, Deutschman CS, Machado FR, Rubenfeld GD, Webb S, Beale RJ, Vincent JL, Moreno R; Surviving Sepsis Campaign Guidelines Committee including The Pediatric Subgroup. Surviving Sepsis Campaign: international guidelines for management of severe sepsis and septic shock, 2012. Intensive Care Med. 2013 Feb;39(2):165-228. doi: 10.1007/s00134-012-2769-8. Epub 2013 Jan 30.
PubMed 23361625Druml W, Heinzel G, Kleinberger G. Amino acid kinetics in patients with sepsis. Am J Clin Nutr. 2001 May;73(5):908-13. doi: 10.1093/ajcn/73.5.908.
PubMed 11333844Hirose T, Shimizu K, Ogura H, Tasaki O, Hamasaki T, Yamano S, Ohnishi M, Kuwagata Y, Shimazu T. Altered balance of the aminogram in patients with sepsis - the relation to mortality. Clin Nutr. 2014 Feb;33(1):179-82. doi: 10.1016/j.clnu.2013.11.017. Epub 2013 Dec 14.
PubMed 24377412Jensen GL, Miller RH, Talabiska DG, Fish J, Gianferante L. A double-blind, prospective, randomized study of glutamine-enriched compared with standard peptide-based feeding in critically ill patients. Am J Clin Nutr. 1996 Oct;64(4):615-21. doi: 10.1093/ajcn/64.4.615.
PubMed 8839508Jorres RA, Holz O, Zachgo W, Timm P, Koschyk S, Muller B, Grimminger F, Seeger W, Kelly FJ, Dunster C, Frischer T, Lubec G, Waschewski M, Niendorf A, Magnussen H. The effect of repeated ozone exposures on inflammatory markers in bronchoalveolar lavage fluid and mucosal biopsies. Am J Respir Crit Care Med. 2000 Jun;161(6):1855-61. doi: 10.1164/ajrccm.161.6.9908102.
PubMed 10852757Kun S, Mikolas E, Molnar GA, Selley E, Laczy B, Csiky B, Kovacs T, Wittmann I. Association of plasma ortho-tyrosine/para-tyrosine ratio with responsiveness of erythropoiesis-stimulating agent in dialyzed patients. Redox Rep. 2014 Sep;19(5):190-8. doi: 10.1179/1351000214Y.0000000090. Epub 2014 Apr 3.
PubMed 24693974Kun S, Molnar GA, Selley E, Szelig L, Bogar L, Csontos C, Miseta A, Wittmann I. Insulin Therapy of Nondiabetic Septic Patients Is Predicted by para-Tyrosine/Phenylalanine Ratio and by Hydroxyl Radical-Derived Products of Phenylalanine. Oxid Med Cell Longev. 2015;2015:839748. doi: 10.1155/2015/839748. Epub 2015 Oct 20.
PubMed 26576228Singer M, Deutschman CS, Seymour CW, Shankar-Hari M, Annane D, Bauer M, Bellomo R, Bernard GR, Chiche JD, Coopersmith CM, Hotchkiss RS, Levy MM, Marshall JC, Martin GS, Opal SM, Rubenfeld GD, van der Poll T, Vincent JL, Angus DC. The Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3). JAMA. 2016 Feb 23;315(8):801-10. doi: 10.1001/jama.2016.0287.
PubMed 26903338Liebau F, Sundstrom M, van Loon LJ, Wernerman J, Rooyackers O. Short-term amino acid infusion improves protein balance in critically ill patients. Crit Care. 2015 Mar 12;19(1):106. doi: 10.1186/s13054-015-0844-6.
PubMed 25882298Lubec B, Hayn M, Denk W, Bauer G. Brain lipid peroxidation and hydroxy radical attack following the intravenous infusion of hydrogen peroxide in an infant. Free Radic Biol Med. 1996;21(2):219-23. doi: 10.1016/0891-5849(96)00018-4.
PubMed 8818637Mikolas E, Kun S, Laczy B, Molnar GA, Selley E, Koszegi T, Wittmann I. Incorporation of ortho- and meta-tyrosine into cellular proteins leads to erythropoietin-resistance in an erythroid cell line. Kidney Blood Press Res. 2013;38(2-3):217-25. doi: 10.1159/000355770. Epub 2014 Apr 9.
PubMed 24751667
Study at a glance
From the registry record, last updated by the sponsor on 30 Mar 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Phase 2 Single Center, Randomized, Placebo-controlled, Double-blind, Parallel Group Study to Evaluate Efficacy of Para-Tyrosine Supplementation on the Survival and Clinical Outcome in Patients With Sepsis
- ClinicalTrials.gov ID
- NCT03278730
- Acronym / sponsor ID
- PTE-2015-02
- Conditions
- Sepsis
- Keywords
- sepsis, para-Tyrosine, ortho-Tyrosine, meta-Tyrosine
- Phase
- Phase 2
- Study type
- Interventional
- Recruitment status
- SuspendedReason stopped: Lack of resources to start
- Enrolment
- 296 participants (estimated)
- Lead sponsor
- University of PecsUniversity, hospital or other
- Study start
- Jan 2027 (estimated)
- Primary completion
- 1 Jan 2027 (estimated)
- Study completion
- 28 Feb 2027 (estimated)
- First posted
- 12 Sep 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.
Meta-and ortho-Tyrosine are known markers of oxidative stress, while the physiological isomer, para-Tyrosine is suggested the antagonize the effects of meta- and ortho-Tyrosine. The changes in the serum levels of meta- and ortho-Tyrosine have been found to be paralel to that of the common sepsis markers. The hypothesis of the study is, that supplementation of para-Tyrosine (p-Tyr) in the early phase of sepsis may diminish some specific inflammatory procedures and thus may have a favourable impact on the disease progress, and consequently on the mortality.
Detailed description
Data suggest, that among the amino acids, the meta- and ortho- isomers of tyrosine are potential markers of oxydative stress. The changes in their serum levels (and urinary excretion) in sepsis were found to be parallel to the changes of the common inflammatory markers, i.e. C-reactive protein (CRP) and pro-calcitonin (PCT). However, para-Tyrosine, which is the isomer physiologically present, seemed to have different kinetics. Furthermore, according to the observations, pathological processes linked to the inflammation could be attenuated or partially or completely reversed by para-tyrosine.
The hypothesis of the study is, that supplementation of para-Tyrosine (p-Tyr) in the early phase of sepsis may diminish some specific inflammatory procedures and thus may have a favourable impact on the disease progress, and consequently on the mortality.
The primary objective of the study is to evaluate, whether oral P-Tyr supplementation reduces mortality compared to placebo group during the ICU stay in patients with sepsis.
The primary endpoint is the comparison of mortality starting from randomization and start of treatment (which should be on the same day) during the period of ICU stay between the active treatment group and placebo group. The secondary objectives of the study are:
to evaluate whether supplementation of p-Tyr has effect on clinical outcome of sepsis compared to placebo in patients receiving appropriate standard care; to evaluate the effect of p-Tyr supplementation on 28-day survival of patients with sepsis; to evaluate, whether the treatment can reduce the time of the ICU stay, to evaluate the effect on overall mortality of patients with sepsis during their hospitalization, to evaluate the effect of p-Tyr supplemetation on the overall hospitalization time, to evaluate the safety of the investigational product. The investigators wish to explore To explore whether serum level of p-Tyr can be maintained with the oral supplementation; dynamics and interrelation of the levels of oxidative stress markers (o- and m-Tyr) and the physiologic isomer of Tyr (p-Tyr) and Phenylalanine (Phe) and the correlation of o-Tyr and m-Tyr serum levels and other parameters of inflammation.
Study design
- Primary purpose
- Prevention
- Allocation
- Randomised
- Intervention model
- Parallel groups
- Masking
- Quadruple blind (participant, care provider, investigator, outcomes assessor)
- Number of arms
- 2
- Model description
- The objective is to evaluate, whether p-Tyr supplementation reduces the ICU mortality of the patients with sepsis comparing to placebo group
| Arm | Type | Receives |
|---|---|---|
| Para-Tyrosine intervention | Active comparator | Drug: Para-Tyrosine supplementationThe patients will receive the study drug during their stay at the ICU but for a maximum of 7 days. Study drug will be dispensed by a nominated member of the study team and administered to the patients by the ICU staff via nasogastric tube in form of oral suspension. The content of the hard capsules will be dissolved in 20 ml of tap water before the dosing. Drug name: Tyrosine. Strength 500 mg. Oral dose form: hard capsule. Number of Dispensed at frequency of 3x2 g daily. Duration of administration: 4 to 7 days. |
| Placebo | Placebo comparator | Drug: Placebo solutionThe patients will receive the study drug during their stay at the ICU but for a maximum of 7 days. Study drug will be dispensed by a nominated member of the study team and administered to the patients by the ICU staff via nasogastric tube in form of oral suspension. The content of the hard capsules will be dissolved in 20 ml of tap water before the dosing. Drug name: Placebo.. Strength N/A. Oral dose form: capsule matching to Tyrosine capsule. Number of Dispnsed an frequency 3x2 g daily. Duration of administration: 4 to 7 days. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (5 listed)
- Are able to provide written informed consent (either the patient or the person entitled by legislation to consent on behalf of the patient)
- Male and female patients ≥ 18 years
- Have a current primary diagnosis of sepsis based on the the third international consensus definitions for sepsis and septic shock (Sepsis-3)Willing and able to comply with all aspects of the protocol
- Females of childbearing potential must have negtive serum pregnancy test az screening. (All females will be considered to be of childbearing potential unless they are postmenopausal i.e. amenorrheic for at least 12 consecutive months, in the appropriate age group and without other known or suspected cause or have been sterilized surgically i.e. bilateral tubal ligation, total hysterectomy, or bilateral oophorectomy, all with surgery at least 1 month before dosing)
Key exclusion criteria (12 listed)
- Females who are pregnant (positive β-hCG test at screening) or breastfeeding
- chronic use of steroids or immunosuppressive drugs within the past 3 months
- other therapy influencing the immune system within the past 3 months (radiotherapy, chemotherapy etc.)
- malignant hematologic disease
- jejunal tube feeding
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 |
|---|---|---|
| Para-Tyrosine supplementationPatients will recieve the study drug during their stay at the ICU, but for a maximum of 7 days. The study drug is 3x2 gramms of para-Tyrosine, which will be dispensed and administered in a form of oral suspension via a nasogastric tube. | Drug | Para-Tyrosine intervention |
| Placebo solutionPatients will recieveplacebo during their stay at the ICU, but for a maximum of 7 days. The study drug is 3x2 gramms of placebo, which will be dispensed and administered in a form of oral suspension via a nasogastric tube. | Drug | Placebo |
Primary outcome
Mortality
Time frame: 30 days
Comparison of mortality starting from randomization and start of treatment (which should be on the same day) during the period of ICU stay between the active treatment group and placebo group.
6 secondary outcomes
Effect of para-Tyrosine supplementation on the clinical outcome of sepsis
Time frame: 30 days
Long term effects of para-Tyrosine supplementation on survival
Time frame: 28 days
Reduction in the time of ICU stay
Time frame: 30 days
Overall mortality
Time frame: 60 days
Hospitalization time
Time frame: 60 days
Safety and tolerability of para-Tyrosine supplementation (Incidence of Treatment-Emergent Adverse Events)
Time frame: 60 days
Results and safety
Results are not available in the source record.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 30 Mar 2025.
- Background: PubMed 21385509Brasnyo P, Molnar GA, Mohas M, Marko L, Laczy B, Cseh J, Mikolas E, Szijarto IA, Merei A, Halmai R, Meszaros LG, Sumegi B, Wittmann I. Resveratrol improves insulin sensitivity, reduces oxidative stress and activates the Akt pathway in type 2 diabetic patients. Br J Nutr. 2011 Aug;106(3):383-9. doi: 10.1017/S0007114511000316. Epub 2011 Mar 9.
- Background: PubMed 9070471Bernard GR, Wheeler AP, Russell JA, Schein R, Summer WR, Steinberg KP, Fulkerson WJ, Wright PE, Christman BW, Dupont WD, Higgins SB, Swindell BB. The effects of ibuprofen on the physiology and survival of patients with sepsis. The Ibuprofen in Sepsis Study Group. N Engl J Med. 1997 Mar 27;336(13):912-8. doi: 10.1056/NEJM199703273361303.
- Background: PubMed 1303622Bone RC, Balk RA, Cerra FB, Dellinger RP, Fein AM, Knaus WA, Schein RM, Sibbald WJ. Definitions for sepsis and organ failure and guidelines for the use of innovative therapies in sepsis. The ACCP/SCCM Consensus Conference Committee. American College of Chest Physicians/Society of Critical Care Medicine. Chest. 1992 Jun;101(6):1644-55. doi: 10.1378/chest.101.6.1644.
- Background: PubMed 11397907Dandona P, Mohanty P, Hamouda W, Ghanim H, Aljada A, Garg R, Kumar V. Inhibitory effect of a two day fast on reactive oxygen species (ROS) generation by leucocytes and plasma ortho-tyrosine and meta-tyrosine concentrations. J Clin Endocrinol Metab. 2001 Jun;86(6):2899-902. doi: 10.1210/jcem.86.6.7745.
- Background: PubMed 23361625Dellinger RP, Levy MM, Rhodes A, Annane D, Gerlach H, Opal SM, Sevransky JE, Sprung CL, Douglas IS, Jaeschke R, Osborn TM, Nunnally ME, Townsend SR, Reinhart K, Kleinpell RM, Angus DC, Deutschman CS, Machado FR, Rubenfeld GD, Webb S, Beale RJ, Vincent JL, Moreno R; Surviving Sepsis Campaign Guidelines Committee including The Pediatric Subgroup. Surviving Sepsis Campaign: international guidelines for management of severe sepsis and septic shock, 2012. Intensive Care Med. 2013 Feb;39(2):165-228. doi: 10.1007/s00134-012-2769-8. Epub 2013 Jan 30.
- Background: PubMed 11333844Druml W, Heinzel G, Kleinberger G. Amino acid kinetics in patients with sepsis. Am J Clin Nutr. 2001 May;73(5):908-13. doi: 10.1093/ajcn/73.5.908.
- Background: PubMed 24377412Hirose T, Shimizu K, Ogura H, Tasaki O, Hamasaki T, Yamano S, Ohnishi M, Kuwagata Y, Shimazu T. Altered balance of the aminogram in patients with sepsis - the relation to mortality. Clin Nutr. 2014 Feb;33(1):179-82. doi: 10.1016/j.clnu.2013.11.017. Epub 2013 Dec 14.
- Background: PubMed 8839508Jensen GL, Miller RH, Talabiska DG, Fish J, Gianferante L. A double-blind, prospective, randomized study of glutamine-enriched compared with standard peptide-based feeding in critically ill patients. Am J Clin Nutr. 1996 Oct;64(4):615-21. doi: 10.1093/ajcn/64.4.615.
- Background: PubMed 10852757Jorres RA, Holz O, Zachgo W, Timm P, Koschyk S, Muller B, Grimminger F, Seeger W, Kelly FJ, Dunster C, Frischer T, Lubec G, Waschewski M, Niendorf A, Magnussen H. The effect of repeated ozone exposures on inflammatory markers in bronchoalveolar lavage fluid and mucosal biopsies. Am J Respir Crit Care Med. 2000 Jun;161(6):1855-61. doi: 10.1164/ajrccm.161.6.9908102.
- Background: PubMed 24693974Kun S, Mikolas E, Molnar GA, Selley E, Laczy B, Csiky B, Kovacs T, Wittmann I. Association of plasma ortho-tyrosine/para-tyrosine ratio with responsiveness of erythropoiesis-stimulating agent in dialyzed patients. Redox Rep. 2014 Sep;19(5):190-8. doi: 10.1179/1351000214Y.0000000090. Epub 2014 Apr 3.
- Background: PubMed 26576228Kun S, Molnar GA, Selley E, Szelig L, Bogar L, Csontos C, Miseta A, Wittmann I. Insulin Therapy of Nondiabetic Septic Patients Is Predicted by para-Tyrosine/Phenylalanine Ratio and by Hydroxyl Radical-Derived Products of Phenylalanine. Oxid Med Cell Longev. 2015;2015:839748. doi: 10.1155/2015/839748. Epub 2015 Oct 20.
- Background: PubMed 26903338Singer M, Deutschman CS, Seymour CW, Shankar-Hari M, Annane D, Bauer M, Bellomo R, Bernard GR, Chiche JD, Coopersmith CM, Hotchkiss RS, Levy MM, Marshall JC, Martin GS, Opal SM, Rubenfeld GD, van der Poll T, Vincent JL, Angus DC. The Third International Consensus Definitions for Sepsis and Septic Shock (Sepsis-3). JAMA. 2016 Feb 23;315(8):801-10. doi: 10.1001/jama.2016.0287.
- Individual participant dataSharing planned: No
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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.
István Wittmann, MD,PhD,DSc principal investigator
University of Pecs
2 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 2 study testing Para-Tyrosine supplementation in people with Sepsis, run by University of Pecs at 2 sites in Hungary.
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 5 inclusion and 12 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: paused, as of the sponsor's last update on 30 Mar 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 2 sites in Hungary. 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. Some participants in this study may receive a placebo. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Results are not available in the source record.
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?
Mortality (time frame: 30 days). 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 NCT03278730, which also lists 25 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 30 Mar 2025.