ClinicalTrials.gg
CompletedNCT00099021Updated Feb 11, 2022Results posted

Pioglitazone Hydrochloride in Preventing Head and Neck Cancer in Patients With Oral Leukoplakia

A Phase 2 interventional study of pioglitazone hydrochloride in Head and Neck Cancer and Oral Leukoplakia, sponsored by National Cancer Institute (NCI). Completed at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2022-02-11.

Primary conditionLeukoplakia, OralRegistry: Head and Neck NeoplasmsReclassifiedWhy we changed it
Registry
Head and Neck Neoplasms — the first condition term the registry derived for this study.
ClinicalTrials.gg
Leukoplakia, Oral
Why
  1. The study's listed conditions name Leukoplakia, Oral, a narrower term within Head and Neck Neoplasms.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by National Cancer Institute (NCI) · Phase 2, Interventional, and Prevention

Phase
Phase 2
Study type
Interventional
Enrollment
21
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-13

Among 20 studies in Leukoplakia, Oral with a site in United States — 1 open to participants now, 3 under way, none of them phase 3. Leukoplakia, Oral · United States.

Enrollment
10th of 15
21 · median 26
Started
2003
with 3 others
Phase 2
11 of 20
1 open now
Registered
3rd of 20
by date
Lead sponsor
7 of 20
National Cancer Institute (NCI)

Among the 20 studies in Leukoplakia, Oral with a site in United States, this one is the 10th largest by enrollment of the 15 interventional ones that give a count, is one of 4 that started in 2003, is one of 11 in phase 2, and was the 3rd registered.

Leukoplakia, Oral

48 studies on the registry are indexed under Leukoplakia, Oral; 11 are open to participants now.

Browse Leukoplakia, Oral studies →

Open to participants now

1 of the 20 studies in Leukoplakia, Oral with a site in United States is open now. Recruiting first, the newest first:

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 7 Leukoplakia, Oral studies recruiting now, 5 set no upper age limit and none stop at 75 or younger; none take children under 18; 1 takes healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 20 studies in Leukoplakia, Oral with a site in United States, or all of them as a file.
02

Study summary

This phase II trial studies how well pioglitazone hydrochloride works in preventing head and neck cancer in patients who have oral leukoplakia. Chemoprevention therapy is the use of certain drugs to try to prevent the development or recurrence of cancer. The use of pioglitazone hydrochloride may be effective in preventing head and neck cancer.

Read the detailed description

PRIMARY OBJECTIVES:

I. Determine whether pioglitazone (pioglitazone hydrochloride) reverses leukoplakia in patients with hyperplastic or dysplastic oral cavity or oropharyngeal leukoplakia.

SECONDARY OBJECTIVES:

I. Determine the safety and tolerability of this drug in these patients.

OUTLINE: This is an open-label study.

Patients receive pioglitazone hydrochloride orally (PO) once daily (QD) for 12 weeks in the absence of disease progression, unacceptable toxicity, or the development of carcinoma.

Patients are followed up at 4, 8, 12, and 16 weeks.

03

Conditions studied

  • Head and Neck Cancer
  • Oral Leukoplakia

Browse trials for

04

In context

Leukoplakia, Oral Reclassified

48 studies on the registry are indexed under Leukoplakia, Oral; 11 are open to participants now.

This study's enrollment of 21 is below the median of 36 across 23 interventional studies indexed under Leukoplakia, Oral.

Browse Leukoplakia, Oral studies →

Lead sponsor

National Cancer Institute (NCI) is the lead sponsor of 3,556 studies on the registry; 336 are open to participants now.

Of its 412 completed or terminated interventional studies of FDA-regulated products, 374 (91%) have results posted.

Compared within Leukoplakia, Oral, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Head and Neck Neoplasms. The counts are of registry records indexed under each term, refreshed daily. How we classify →

05

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

Criteria:

  • 0-2
  • Diagnosis of oral cavity or oropharyngeal leukoplakia meeting 1 of the following criteria:
  • -proven hyperplasia in high-risk anatomic areas (e.g., floor of the mouth, mobile tongue, oropharynx, or in any erythroplakia lesion)
  • Mild, moderate, or severe dysplasia at any site of the oral cavity or oropharynx within the lesion
  • that is clinically characterized by leukoplakia, erythroplakia, or erythroleukoplakia
  • Able to be assessed by bi-directional measurements
  • : More than 3 months
  • >= lower limit of normal for males and females OR
  • Hemoglobin >= 11 g/dL for premenopausal females
  • WBC > 3,000/mm\^3
  • Hepatic: \< 1.5 times (ULN); and ALT \< 1.5 times ULN
  • Renal: BUN \< 1.5 times ULN; Creatinine \< 1.5 times ULN
  • Not pregnant or nursing
  • Negative pregnancy test
  • Fertile patients must use effective barrier
  • No to thiazolidinediones
  • No allergy to pioglitazone or other thiazolidinediones
  • No serious oral infection
  • No invasive carcinoma within the past 60 months except nonmelanoma skin cancer or carcinoma in situ of the cervix
  • No concurrent
  • More than 3 months since prior biologic or immunologic therapy
  • No concurrent insulin for diabetes
  • No prior radiotherapy to the oral cavity
  • More than 3 months since prior chemopreventative agents
  • More than 3 months since prior experimental therapy
  • More than 3 months since prior megadose vitamins or alternative therapy
  • No prior thiazolidinediones
  • No prior participation in this study
  • No concurrent pharmacologic treatment for diabetes
  • Concurrent chronic use of non-steroidal anti-inflammatory drugs allowed
  • count > 125,000/mm\^3
  • Index lesion must be located in an anatomic site accessible by punch biopsy
Terms in these criteria, in plain language(13)

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.

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.

0
Fully active, no restrictions.
1
Limited in strenuous activity, but walking and able to do light work, such as housework or office work.
2
Walking and able to look after yourself, but unable to work; up and about more than half of waking hours.
3
Able to look after yourself only in part; in bed or a chair more than half of waking hours.
4
Unable to look after yourself at all; in bed or a chair all day.

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.

Biopsy and archival tissue

A biopsy takes a small piece of tissue to examine. “Archival tissue” is a sample already taken, for example at diagnosis, and kept by the hospital.

Whether a stored sample will do depends on when it was taken, how much there is and what the study needs. Ask whether the study accepts your stored sample or needs a new biopsy.

Measurable disease

The amount of disease can be tracked with a defined measurement, so the study can see whether it shrinks or grows. It might be a tumour measured on a scan or, in some blood cancers such as myeloma, a marker measured in blood or urine.

The criteria or the study team say which measurement counts — having no tumour visible on a scan does not by itself rule you out.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

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).

Postmenopausal

Periods have stopped for good: usually no period for 12 months in a row without another medical reason, sometimes confirmed by a blood test (FSH).

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.

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.

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.

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.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

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.

06

Study design

Phase
Phase 2
Primary purpose
Prevention
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
21 participants (actual)

Study arms

  • Experimental
    Prevention (pioglitazone hydrochloride)

    Patients receive pioglitazone hydrochloride PO QD for 12 weeks in the absence of disease progression, unacceptable toxicity, or the development of carcinoma.

    Drug: pioglitazone hydrochloride

Interventions

07

What researchers measure

Primary outcomes

  1. Patients' Overall Response

    Overall Response= reviewing both the clinical and histological responses and assigning the worst category. Complete Response (CR) = Clinical CR and Histologic CR, or Histologic CR Partial Response (PR) = Clinical CR or PR and Histologic PR or Stable Disease (SD) Stable Disease (SD) = Clinical SD and Histologic PR or SD Progressive Disease (PD) = Clinical PD and/or Histologic PD

    Time frame: Week 16 (4 weeks post dose)

Secondary outcomes

  1. Patients' Clinical Response

    Determined by measurement of lesions- Complete Response (CR)= disappearance of all lesions, Partial Response (PR)= \>or= 50% decrease in sum of lesions, Stable Disease (SD) = does not meet CR,PR or Progressive Disease (PD), and PD= \>or= 25% increase in sum of lesions

    Time frame: Week 16 (4 weeks post dose)

  2. Patients' Histological (Tissue) Response

    Determined by biopsy results before and 4 weeks after treatment: Complete Response (CR) =complete reversal of dysplasia or hyperplasia, Partial Response (PR) = \>or=50% decrease in sum of lesions, no increase in 1 or more lesions and no new lesion occurs, Stable Disease (SD0 = not CR, PR or Progressive Disease (PD), PD = \>or= 25% increase in sum of lesions or new lesion or progression to invasive carcinoma.

    Time frame: Week 16 (4 weeks post dose)

Other outcomes

  1. Interleukin 6, 8 and Vascular Endothelial Growth Factors Elaboration in the Oral Cavity and Serum

    Quantitative studies of serum and saliva components for a pre and post treatment possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  2. Quantitative Oil Red O, AP2 (FABP4) and FABP5 Staining

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  3. Involucrin and Transglutaminase Staining

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  4. Cyclin D1 and p21 Immune Histochemistry

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  5. Cyclooxygenase-2 Staining

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  6. Piogliotazone Gamma Immune Histochemistry

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  7. Ki 67 Labeling Index

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  8. Apotosis (Cell Death)

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

  9. Nf Kappa B p65

    Immune histochemistry / tissue staining for a possible biomarker.

    Time frame: Pre (Day 0) and Post (Week 12) Treatment

08

Results

Posted Nov 25, 2009
Limitations and caveats
Study was closed prior to full accrual because results were very good and funding was discontinued (R-01 application was filed.) Immunohistochemistry (Outcomes #4 through #12) were not done due to laboratory limitations of time.

Participant flow

Participant flow — Overall Study
MilestonePioglitazone Patients
Started21
Completed21
Not completed0

Outcome measures

PrimaryPatients' Overall Response

Overall Response= reviewing both the clinical and histological responses and assigning the worst category. Complete Response (CR) = Clinical CR and Histologic CR, or Histologic CR Partial Response (PR) = Clinical CR or PR and Histologic PR or Stable Disease (SD) Stable Disease (SD) = Clinical SD and Histologic PR or SD Progressive Disease (PD) = Clinical PD and/or Histologic PD

Time frame:
Week 16 (4 weeks post dose)
Reported as:
Number · Participants
Patients' Overall Response
ParticipantsPioglitazone Patients
Complete Response0
Partial Response15
Stable Disease2
Progressive Disease4
Partial + Complete Response15
SecondaryPatients' Clinical Response

Determined by measurement of lesions- Complete Response (CR)= disappearance of all lesions, Partial Response (PR)= \>or= 50% decrease in sum of lesions, Stable Disease (SD) = does not meet CR,PR or Progressive Disease (PD), and PD= \>or= 25% increase in sum of lesions

Time frame:
Week 16 (4 weeks post dose)
Reported as:
Number · Participants
Patients' Clinical Response
ParticipantsPioglitazone Patients
Complete Response3
Partial Response14
Stable Disease4
Progressive Disease0
Partial + Complete17
SecondaryPatients' Histological (Tissue) Response

Determined by biopsy results before and 4 weeks after treatment: Complete Response (CR) =complete reversal of dysplasia or hyperplasia, Partial Response (PR) = \>or=50% decrease in sum of lesions, no increase in 1 or more lesions and no new lesion occurs, Stable Disease (SD0 = not CR, PR or Progressive Disease (PD), PD = \>or= 25% increase in sum of lesions or new lesion or progression to invasive carcinoma.

Time frame:
Week 16 (4 weeks post dose)
Reported as:
Number · Participants
Patients' Histological (Tissue) Response
ParticipantsPioglitazone Patients
Complete Response1
Partial Response2
Stable Disease14
Progressive Disease4
Partial + Complete Response3
Other pre-specifiedInterleukin 6, 8 and Vascular Endothelial Growth Factors Elaboration in the Oral Cavity and Serum

Quantitative studies of serum and saliva components for a pre and post treatment possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedQuantitative Oil Red O, AP2 (FABP4) and FABP5 Staining

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedInvolucrin and Transglutaminase Staining

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedCyclin D1 and p21 Immune Histochemistry

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedCyclooxygenase-2 Staining

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedPiogliotazone Gamma Immune Histochemistry

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedKi 67 Labeling Index

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedApotosis (Cell Death)

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Other pre-specifiedNf Kappa B p65

Immune histochemistry / tissue staining for a possible biomarker.

Time frame:
Pre (Day 0) and Post (Week 12) Treatment

Results for this outcome have not been posted.

Adverse events

Collected over From first dose of Pioglitazone through Week 16 (end of study).. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Pioglitazone Patients—0/21 (0%)18/21 (85.7%)
Most frequent other events
Showing 10 of 54
Most frequent other events
EventPioglitazone Patients
Peripheral edemaBlood and lymphatic system disorders6/21
HeadacheGeneral disorders5/21
Joint painMusculoskeletal and connective tissue disorders4/21
NauseaGastrointestinal disorders4/21
Upper respiratory infectionInfections and infestations4/21
DiarrheaGastrointestinal disorders3/21
FatigueGeneral disorders3/21
Lightheadness, dizzyNervous system disorders3/21
Muscle stiffness, aches, myalgiaMusculoskeletal and connective tissue disorders3/21
Back painMusculoskeletal and connective tissue disorders2/21

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)Pioglitazone Patients
<=18 years0
Between 18 and 65 years19
>=65 years2
Age, Continuous
Age, Continuous(years)Pioglitazone Patients
Median56.1 (27 to 75)
Sex: Female, Male
Sex: Female, Male(Participants)Pioglitazone Patients
Female12
Male9
Region of Enrollment
Region of Enrollment(participants)Pioglitazone Patients
United States21
09

Study locations

1 site
  • University of Minnesota Medical Center-Fairview
    Minneapolis, Minnesota 55455, United States
10

Timeline

Tracking since Sep 25, 2026
Not marked actual or estimatedDates not marked actual or estimated

The record gives a start of Jun 2003, a primary completion of Jun 2008 and a completion of Jun 2008. It does not say whether these dates are actual or estimated.

Results were first posted in Nov 2009, 1 year 4 months after primary completion.

How these figures are worked out, and which studies are left out of them.

Registered
Dec 8, 2004
First posted
Dec 9, 2004
Start
Jun 2003
Primary completionActual
Jun 27, 2008
CompletionActual
Jun 27, 2008
Results first posted
Nov 25, 2009
Last update
Feb 11, 2022
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 11, 2022, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT00099021
Responsible party
Sponsor
First posted
Dec 9, 2004
Start date
Jun 2003
Primary completion
Jun 27, 2008
Completion
Jun 27, 2008
Results posted
Nov 25, 2009
Last update
Feb 11, 2022

Study contacts

Frank Ondrey
principal investigator · University of Minnesota Medical Center-Fairview
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2022. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Pioglitazone

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