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Inositol in Preventing Lung Cancer in Current or Former Smokers With Bronchial Dysplasia

Phase IIb Randomized Comparative Study of the Efficacy and Safety of Myo-inositol Versus Placebo in Smokers With Bronchial Dysplasia

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00783705
Enrollment
85
Registered
2008-11-03
Start date
2008-11-30
Completion date
2014-05-31
Last updated
2017-12-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-small Cell Lung Cancer, Squamous Lung Dysplasia

Brief summary

This randomized phase II trial is studying inositol to see how well it works compared with a placebo in preventing lung cancer in current or former smokers with bronchial dysplasia. Chemoprevention is the use of certain drugs to keep cancer from forming. The use of inositol may prevent lung cancer. It is not yet known whether inositol is more effective than a placebo in preventing lung cancer in smokers with bronchial dysplasia.

Detailed description

PRIMARY OBJECTIVES: I. To evaluate the efficacy of myo-inositol (inositol) 9 grams by mouth twice a day for 6 months versus placebo to revert bronchial dysplasia in current/former smokers with or without curatively treated Stage 0/I non-small cell lung cancer. SECONDARY OBJECTIVES: I. To further define the mechanism(s) of action of pharmacological doses of myo-inositol as a lung cancer chemopreventive agent by evaluating changes in: the number of dysplastic lesions, Ki-67, caspase-3, peroxisome proliferator-activated receptor (PPAR) gamma, cyclin D1, cyclin E and vascular endothelial growth factor (VEGF) immunostaining in bronchial biopsies; gene expression analysis of ribonucleic acid (RNA) from bronchial brush cells; and changes in inflammatory biomarkers (C-reactive protein \[CRP\], monocyte chemotactic protein-1 \[MCP-1\], myeloid progenitor inhibitory factor-1 \[MPIF-1\] and L-Selectin) levels in bronchoalveolar lavage (BAL) and plasma before and after treatment. II. To collect additional safety and adverse event profiles of participants enrolled in both intervention arms. III. To establish a biospecimen repository archive for future correlative studies. OUTLINE: Patients are stratified according to smoking status (current vs former), prior lung cancer (yes vs no), and number of dysplastic lesions at baseline (1 vs \> 1). Patients are randomized to 1 of 2 treatment arms. ARM I: Patients receive oral inositol once daily for 2 weeks and then twice daily for up to 6 months in the absence of unacceptable toxicity. ARM II: Patients receive oral placebo once daily for 2 weeks and then twice daily for up to 6 months in the absence of unacceptable toxicity. Patients undergo white light and autofluorescence bronchoscopy with bronchoalveolar lavage, bronchial brushings, and biopsies as well as optical coherence tomography imaging and blood sample collection at baseline and after completion of study treatment. Samples are analyzed for tissue biomarkers (e.g., PPAR gamma, Ki-67, caspase-3, cyclin D1, cyclin E, and VEGF) by immunohistochemistry (IHC); cytokine levels (e.g., CRP, MCP-1, MPIF-1, and L-selectin) by ELISA; and gene expression profiles of RNA by microarray. After completion of study treatment, patients are followed within 30 days.

Interventions

OTHERplacebo

Given orally

Given orally

Sponsors

National Cancer Institute (NCI)
Lead SponsorNIH

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender
ALL
Age
45 Years to 79 Years
Healthy volunteers
No

Inclusion criteria

* Histologically confirmed bronchial dysplasia in ≥ 1 site AND meets one of the following criteria: * Current or former smoker with ≥ a 30 pack-year smoking history and no history of lung cancer * Stage 0 or I non-small cell lung cancer (NSCLC) curatively treated by surgery (local ablation or resection), adjuvant chemotherapy, or radiotherapy with a ≥ 30 pack-year smoking history * At least 6 months since prior surgery, adjuvant chemotherapy, or radiotherapy * No current evidence of lung cancer by CT scan * No non-calcified lung nodules ≥ 10 mm diameter on spiral CT scan unless cancer is ruled out by PET/CT scan or by biopsy * ECOG performance status 0-1 * Hemoglobin normal * Leukocyte count ≥ 3,000/mm³ * Absolute neutrophil count ≥ 1,500/mm³ * Platelet count ≥ 100,000/mm³ * Total bilirubin ≤ 1.5 times upper limit of normal (ULN) * Alkaline phosphatase ≤ 1.5 times ULN * ALT and AST ≤ 1.5 times ULN * BUN ≤ 1.5 times ULN * Chloride ≤ 1.5 times ULN * Total CO\_2 ≤ 1.5 times ULN * Sodium ≤ 1.5 times ULN * Calcium ≤ 1.5 times ULN * Potassium ≤ 1.5 times ULN * Phosphorus ≤ 1.5 times ULN * Creatinine ≤ 1.5 times ULN OR creatinine clearance ≥ 30mL/min * Fasting blood glucose normal * Not pregnant or nursing * Negative pregnancy test * Fertile patients must use effective contraception * No cancer within the past 3 years except stage 0 or I NSCLC, nonmelanomatous skin cancer, localized prostate cancer, carcinoma in situ of the cervix, or superficial bladder cancer that was treated \> 6 months ago * No concurrent uncontrolled illness including, but not limited to, any of the following: * Ongoing or active infection * Symptomatic congestive heart failure * Unstable angina pectoris * Cardiac arrhythmia * Severe chronic obstructive pulmonary disease requiring supplemental oxygen * Uncontrolled hypertension * Psychiatric illness or social situation that would limit compliance with study requirements * No schizophrenia or bipolar disorder * No diabetes * No requirement for supplemental oxygen (continuous or intermittent) * SaO\_2 ≥ 90% on room air * No history of allergic reactions attributed to inositol * No history of allergies to any ingredient in the study agent or placebo * No other concurrent investigational agents * At least 7 days since prior anticoagulant use (e.g., coumadin or heparin) * More than 6 months since prior participation in another chemoprevention clinical trial * No prior pneumonectomy * No prior solid organ transplantation * No concurrent lithium, carbamazepine, or valproate * No concurrent use of other natural health products containing inositol

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.From baseline up to 6 monthsThe definitions of responses are: Complete response: regression of all dysplastic lesion (DL) found at baseline to lesions that were no worse than hyperplasia and no new DL that were mild dysplasia or worse; Partial response: regression of some but not all of the DL with no new lesions that are mild dysplasia or worse; Progressive disease: progression of one or more sites by two or more grades or new DL that were mild dysplasia or worse; Stable disease: no complete response, partial response or progression.
Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.From baseline up to 6 monthsThe definitions of responses are: Complete response: the regression of a dysplastic lesion (DL) of any grade to one classified as being hyperplastic/normal; Progressive disease: appearance of lesions that were classified as mild dysplasia or worse; Stable disease: lesions that are not classified as complete response or progressive disease

Secondary

MeasureTime frameDescription
Change in Gene Expression Profiles of RNA in Bronchial Brush Cell Samples as Assessed by MicroarrayFrom baseline up to 6 months
Change in Inflammatory Biomarkers Levels (CC-16) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (IL-6) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (CCL-2) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (MPO) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (CC18) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (SFTPD) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (Total Glutathione) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)From baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Percent Change in the Number of Bronchial Dysplastic Lesions Before and After TreatmentFrom baseline up to 6 monthsThe change in the number of bronchial dysplastic lesions is defined as disappearance or appearance of lesions.
Change in Inflammatory Biomarkers Levels (CRP) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (IL-6) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (CCL-2) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (MPO) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (Nitrotyrosine) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (CC18) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (SFTPD) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Change in Inflammatory Biomarkers Levels (CC-16) in Plasma Samples as Assessed by ELISAFrom baseline up to 6 monthsThe biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).
Mean Percent Change in Ki-67 Expression Level in the Bronchial Biopsies With DysplasiaFrom baseline up to 6 months

Countries

Canada, United States

Participant flow

Recruitment details

448 subjects were pre-registered through 3 Cancer Prevention Network (CPN) member organizations from 2008 to 2013.

Pre-assignment details

363 subjects were excluded from pre-assignment: 342 ineligible via bronchoscopy, 3 participant decision, 13 lab values out of range, 1 screening time line issue and 4 suspicious of cancer.

Participants by arm

ArmCount
Arm A (Myo-inositol)
Patients receive oral inositol once daily for 2 weeks and then twice daily for up to 6 months in the absence of unacceptable toxicity.
44
Arm B (Placebo)
Patients receive oral placebo once daily for 2 weeks and then twice daily for up to 6 months in the absence of unacceptable toxicity.
41
Total85

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event20
Overall StudyLost to Follow-up13
Overall StudyWithdrawal by Subject32

Baseline characteristics

CharacteristicArm B (Placebo)TotalArm A (Myo-inositol)
Age, Continuous58.0 years58.0 years58.5 years
Alcohol Intake
1 or fewer drinks per day
11 participants38 participants27 participants
Alcohol Intake
2-3 drinks per day
13 participants20 participants7 participants
Alcohol Intake
4 or more drinks per day
4 participants5 participants1 participants
Alcohol Intake
None
13 participants22 participants9 participants
Body Mass Index, kg/m^226.0 kg/m^226.5 kg/m^227.2 kg/m^2
Dysplastic Lesions Identified
1 Dysplastic lesion
19 participants41 participants22 participants
Dysplastic Lesions Identified
>1 Dysplastic lesions
22 participants44 participants22 participants
Most Advanced Histology
Mild dysplasia
13 participants28 participants15 participants
Most Advanced Histology
Moderate dysplasia
22 participants50 participants28 participants
Most Advanced Histology
Severe dysplasia
6 participants7 participants1 participants
Mucosal Biopsies Obtained7.0 biopsies7.0 biopsies6.0 biopsies
Prior NSAID (nonsteroidal anti-inflammatory drugs) Use
No
29 participants57 participants28 participants
Prior NSAID (nonsteroidal anti-inflammatory drugs) Use
Yes
12 participants28 participants16 participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
3 Participants5 Participants2 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
38 Participants80 Participants42 Participants
Region of Enrollment
Canada
33 participants69 participants36 participants
Region of Enrollment
United States
8 participants16 participants8 participants
Sex: Female, Male
Female
13 Participants23 Participants10 Participants
Sex: Female, Male
Male
28 Participants62 Participants34 Participants
Smoking Status
Current
26 participants53 participants27 participants
Smoking Status
Former
15 participants32 participants17 participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
36 / 4432 / 41
serious
Total, serious adverse events
1 / 440 / 41

Outcome results

Primary

Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.

The definitions of responses are: Complete response: the regression of a dysplastic lesion (DL) of any grade to one classified as being hyperplastic/normal; Progressive disease: appearance of lesions that were classified as mild dysplasia or worse; Stable disease: lesions that are not classified as complete response or progressive disease

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy.

ArmMeasureGroupValue (NUMBER)
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Complete response10.2 percentage of participants
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Stable disease15.9 percentage of participants
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Progressive disease12.5 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Complete response7.4 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Stable disease22.6 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Lesion-specific Analysis.Progressive disease10.3 percentage of participants
Comparison: Generalized estimating equation model on lesions (progressive disease vs. complete response/stable disease) was used to account for intra-patient correlation in the lesion-specific analysis.p-value: 0.3995% CI: [0.7, 3]Generalized estimating equation model
Primary

Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.

The definitions of responses are: Complete response: regression of all dysplastic lesion (DL) found at baseline to lesions that were no worse than hyperplasia and no new DL that were mild dysplasia or worse; Partial response: regression of some but not all of the DL with no new lesions that are mild dysplasia or worse; Progressive disease: progression of one or more sites by two or more grades or new DL that were mild dysplasia or worse; Stable disease: no complete response, partial response or progression.

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy.

ArmMeasureGroupValue (NUMBER)
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Complete response26.3 percentage of participants
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Partial response10.5 percentage of participants
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Stable disease15.8 percentage of participants
Arm A (Myo-inositol)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Progressive disease47.4 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Progressive disease33.3 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Complete response13.9 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Stable disease36.1 percentage of participants
Arm B (Placebo)Percentage of Participants With Response Determined by Change in the Histologic Grade of Bronchial Dysplasia as Measured by Mucosal Biopsy Samples on Participant-specific Analysis.Partial response16.7 percentage of participants
Secondary

Change in Gene Expression Profiles of RNA in Bronchial Brush Cell Samples as Assessed by Microarray

Time frame: From baseline up to 6 months

Population: Data were not collected due to a study team decision not to analyze this endpoint.

Secondary

Change in Inflammatory Biomarkers Levels (CC-16) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CC-16) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-66.96 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CC-16) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-54.32 ng/mL
Comparison: Comparison of the median difference in biomarker CC-16 level between arms.p-value: 0.1Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CC-16) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CC-16) in Plasma Samples as Assessed by ELISA-0.08 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CC-16) in Plasma Samples as Assessed by ELISA-0.58 ng/mL
Comparison: Comparison of the median difference in biomarker CC-16 level between arms.p-value: 0.35Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CC18) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CC18) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-121.47 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CC18) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)10.70 ng/mL
Comparison: Comparison of the median difference in biomarker CC18 level between arms.p-value: 0.63Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CC18) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CC18) in Plasma Samples as Assessed by ELISA1.50 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CC18) in Plasma Samples as Assessed by ELISA-0.16 ng/mL
Comparison: Comparison of the median difference in biomarker CC18 level between arms.p-value: 0.46Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CCL-2) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CCL-2) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-9.25 pg/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CCL-2) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)9.41 pg/mL
Comparison: Comparison of the median difference in biomarker CCL-2 level between arms.p-value: 0.58Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CCL-2) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CCL-2) in Plasma Samples as Assessed by ELISA2.19 pg/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CCL-2) in Plasma Samples as Assessed by ELISA9.08 pg/mL
Comparison: Comparison of the median difference in biomarker CCL-2 level between arms.p-value: 0.74Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (CRP) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (CRP) in Plasma Samples as Assessed by ELISA161.18 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (CRP) in Plasma Samples as Assessed by ELISA-74.11 ng/mL
Comparison: Comparison of the median difference in biomarker CRP level between arms.p-value: 0.8Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (IL-6) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (IL-6) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-0.68 pg/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (IL-6) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-0.27 pg/mL
Comparison: Comparison of the median difference in biomarker IL-6 level between arms.p-value: 0.03Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (IL-6) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (IL-6) in Plasma Samples as Assessed by ELISA0.06 pg/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (IL-6) in Plasma Samples as Assessed by ELISA0.01 pg/mL
Comparison: Comparison of the median difference in biomarker IL-6 level between arms.p-value: 0.22Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (MPO) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (MPO) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-3.46 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (MPO) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-1.15 ng/mL
Comparison: Comparison of the median difference in biomarker MPO level between arms.p-value: 0.06Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (MPO) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (MPO) in Plasma Samples as Assessed by ELISA0.20 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (MPO) in Plasma Samples as Assessed by ELISA0.09 ng/mL
Comparison: Comparison of the median difference in biomarker MPO level between arms.p-value: 0.55Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (Nitrotyrosine) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (Nitrotyrosine) in Plasma Samples as Assessed by ELISA0.77 mmol/L
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (Nitrotyrosine) in Plasma Samples as Assessed by ELISA0.88 mmol/L
Comparison: Comparison of the median difference in biomarker Nitrotyrosine level between arms.p-value: 0.91Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (SFTPD) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (SFTPD) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-12.39 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (SFTPD) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)7.21 ng/mL
Comparison: Comparison of the median difference in biomarker SFTPD level between arms.p-value: 0.22Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (SFTPD) in Plasma Samples as Assessed by ELISA

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with plasma samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (SFTPD) in Plasma Samples as Assessed by ELISA-0.28 ng/mL
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (SFTPD) in Plasma Samples as Assessed by ELISA-0.22 ng/mL
Comparison: Comparison of the median difference in biomarker SFTPD level between arms.p-value: 0.52Wilcoxon Rank-Sum
Secondary

Change in Inflammatory Biomarkers Levels (Total Glutathione) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)

The biomarkers that were examined were: 1) pro-inflammatory proteins: C-reactive protein (CRP, R&D Systems), interleukin-6 (IL-6, R&D Systems), and CCL-2 (R&D Systems); 2) oxidant/antioxidants: myeloperoxidase (MPO, R&D Systems), nitrotyrosine (Hycult Biotech) and glutathione (Millipore-Calbiochem); and 3) pneumoproteins: Clara cell protein-16 (CC-16, Biovendor), surfactant protein-D (SFTPD, R&D Systems) and CC18 (R&D Systems).

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with bronchoalveolar lavage samples available

ArmMeasureValue (MEDIAN)
Arm A (Myo-inositol)Change in Inflammatory Biomarkers Levels (Total Glutathione) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-0.25 umol/L
Arm B (Placebo)Change in Inflammatory Biomarkers Levels (Total Glutathione) in Bronchoalveolar Lavage Samples as Assessed by Enzyme-linked Immunoassay (ELISA)-0.56 umol/L
Comparison: Comparison of the median difference in biomarker Total Glutathione level between arms.p-value: 0.06Wilcoxon Rank-Sum
Secondary

Mean Percent Change in Ki-67 Expression Level in the Bronchial Biopsies With Dysplasia

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with lesions biopsied.

ArmMeasureValue (MEAN)Dispersion
Arm A (Myo-inositol)Mean Percent Change in Ki-67 Expression Level in the Bronchial Biopsies With Dysplasia-22.8 percentage of Ki67 expression levelStandard Deviation 105.3
Arm B (Placebo)Mean Percent Change in Ki-67 Expression Level in the Bronchial Biopsies With Dysplasia-6.2 percentage of Ki67 expression levelStandard Deviation 98.7
Secondary

Percent Change in the Number of Bronchial Dysplastic Lesions Before and After Treatment

The change in the number of bronchial dysplastic lesions is defined as disappearance or appearance of lesions.

Time frame: From baseline up to 6 months

Population: The analysis population included the participants who received study intervention and completed both the pre- and post-intervention bronchoscopy with lesions biopsied.

ArmMeasureValue (MEAN)Dispersion
Arm A (Myo-inositol)Percent Change in the Number of Bronchial Dysplastic Lesions Before and After Treatment-53.5 percentage change in number of lesionsStandard Deviation 116.1
Arm B (Placebo)Percent Change in the Number of Bronchial Dysplastic Lesions Before and After Treatment-50.0 percentage change in number of lesionsStandard Deviation 115.8

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026