A Phase 2 interventional study of Taurine in Oral Mucositis (Ulcerative) Due to Radiation and Nasopharyngeal Carcinoma (NPC), sponsored by Sun Yat-sen University. Recruiting at 1 site in China. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-10-30.
Sponsored by Sun Yat-sen University · Phase 2, Interventional, and Prevention
This clinical trial aims to understand whether taurine can prevent and reduce severe radiation-induced oral mucositis in patients with nasopharyngeal carcinoma undergoing radiotherapy.
306 studies on the registry are indexed under Stomatitis; 75 are open to participants now.
This study's planned enrollment of 130 is above the median of 60 across 276 interventional studies indexed under Stomatitis.
Browse Stomatitis studies →Sun Yat-sen University is the lead sponsor of 1,690 studies on the registry; 619 are open to participants now.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Histologically or cytologically confirmed
The diagnosis was confirmed by looking at a sample under a microscope: tissue from a biopsy or surgery (histology), or cells from a fluid or needle sample (cytology).
Your pathology report is the document that shows this.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Metastases
Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECOG performance status
A scale of how much an illness limits everyday activity. For people being assessed to join a study, scores run from 0 (fully active) to 4; lower is more active.
Studies most often ask for 0–1 or 0–2. Your doctor gives the score; the WHO scale uses the same steps. The full scale also has 5, which records death.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hemoglobin (Hb)
The protein in red blood cells that carries oxygen. A low level is anaemia, which can cause tiredness and breathlessness. Measured in g/dL or g/L (9 g/dL is 90 g/L).
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Absolute neutrophil count (ANC)
The number of neutrophils, white blood cells that help fight infection, in a given amount of blood. Too few raises the risk of infection.
It is a count, not a percentage of the white cells. Limits are written in units that mean the same: ≥ 1.5 × 10⁹/L is ≥ 1,500 per mm³ (µL). Each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Platelets
Blood cells that help blood clot. Too few raises the risk of bleeding and bruising. A usual adult range is about 150–400 × 10⁹/L (150,000–400,000 per µL); each lab has its own reference range.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Bilirubin
A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.
Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ULN (upper limit of normal)
The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.
“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ALT and AST (liver enzymes)
Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.
Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Creatinine clearance (CrCl)
How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
ECG (electrocardiogram)
A recording of the heart’s electrical activity, taken with stickers on the chest, arms and legs. It takes a few minutes and does not hurt.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Hypersensitivity
An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Excipients
The other ingredients in a medicine besides the active drug, such as fillers, colours or preservatives.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Childbearing potential
Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).
Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Contraception
Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.
Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Immunosuppression
A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.
Read whether the line is about a condition or about medicines, and which medicines and doses it means.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Oral taurine 1 g twice daily, starting 3 days before radiotherapy until 1 week after completion of radiotherapy, plus standard of care for RIOM.
Drug: Taurine
Patients in the control arm will receive the standard of care for RIOM.
Oral taurine 1 g twice daily, administered from 3 days before the start of radiotherapy until 1 week after the completion of radiotherapy.
Incidence of Severe Radiation-Induced Oral Mucositis
The incidence of Grade ≥3 radiation-induced oral mucositis (RIOM) in the experimental and control groups, as assessed using the Radiation Therapy Oncology Group (RTOG) acute RIOM grading scale.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Onset Time of Severe Radiation-Induced Oral Mucositis
The interval from the start of radiotherapy to the first occurrence of severe radiation-induced oral mucositis (RIOM). Severe RIOM is defined as Grade ≥3 according to the Radiation Therapy Oncology Group (RTOG) acute RIOM grading scale.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Duration of Severe Radiation-Induced Oral Mucositis
The interval from the first occurrence of severe acute radiation-induced oral mucositis (RIOM) to its resolution to Grade ≤2, as assessed according to the Radiation Therapy Oncology Group (RTOG) acute RIOM grading scale. Severe RIOM is defined as Grade ≥3 on the RTOG acute RIOM grading scale.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy.
Recovery Rate of Severe Radiation-Induced Oral Mucositis
The proportion of patients whose severe acute radiation-induced oral mucositis (RIOM) resolves to Grade ≤2 during the overall observation period, as assessed according to the Radiation Therapy Oncology Group (RTOG) acute RIOM grading scale. Severe RIOM is defined as Grade ≥3 on the RTOG acute RIOM grading scale.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Incidence of Radiation-Induced Oral Mucositis
The proportion of patients who develop any-grade acute radiation-induced oral mucositis (RIOM) (Grade ≥1) during the overall observation period, as assessed according to the Radiation Therapy Oncology Group (RTOG) acute RIOM grading scale.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Incidence of Radiotherapy Interruption
The proportion of patients who experience a radiotherapy interruption of 5 or more consecutive days during the radiotherapy period due to acute radiation-induced oral mucositis (RIOM) or other related adverse events.
Time frame: From the start of radiotherapy through completion of radiotherapy, an average of 7 weeks.
Quality of life (QoL)
Quality of life related to head and neck symptoms will be assessed using the European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire-Head and Neck Module (EORTC QLQ-H\&N35), version 1.0. This questionnaire comprises 35 items, including seven multi-item scales and 11 single-item measures. All scales and items will be scored according to the official EORTC Scoring Manual and linearly transformed to a 0 to 100 scale, with higher scores indicating greater symptom burden and poorer quality of life.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Numeric Rating Scale for Pain
Oral mucositis-related pain was assessed in all participants using the Numeric Rating Scale (NRS), an 11-point scale ranging from 0 to 10, where 0 indicates no pain and 10 indicates the worst pain imaginable. Higher scores indicate worse pain.
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Safety as Assessed by CTCAE
Adverse events were monitored and recorded according to the Common Terminology Criteria for Adverse Events (CTCAE), version 5.0
Time frame: From the start of radiotherapy to 4 weeks after completion of radiotherapy
Plan to share: No
No publications or documents are linked to this record.
Started May 2026 (actual). Primary completion is estimated for Mar 2027, 10 months after the start.
Of 39 phase 2 interventional studies under Stomatitis, half reached primary completion within 35 months of starting (the median), counting those still running; a quarter within 10 and three quarters within 48. This study's planned 10 months is below that.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
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Studies of the drug tested here: Taurine