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Polarized Reflectance Spectroscopy for Oral Lesions (PolProbe)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01604759
Recruitment Status : Completed
First Posted : May 24, 2012
Last Update Posted : January 31, 2017
M.D. Anderson Cancer Center
University of Texas at Austin
Information provided by (Responsible Party):
British Columbia Cancer Agency

Brief Summary:

In this study the investigators are conducting research to determine whether a new optical device using polarization reflectance spectroscopy can help doctors or dentists identify abnormalities in the mouth that require follow-up. To establish this, measurements are needed from a large number of individuals with different abnormalities in their mouth.

The investigators believe the proposed approach has potential to improve and enable mass screening for precancerous and early cancers of the oral cavity by improving the predictive value of oral cavity exams, particularly for less experienced practitioners.

The information from this study will be compared to results from the pathology report of the tissue taken from your mouth.


  1. Polarized reflectance spectroscopy can distinguish high-risk oral lesion from normal and reactive oral lesions.
  2. Polarized reflectance spectroscopy can capture low-grade oral lesions that have characteristics associated with a high risk of progression to cancer.

Condition or disease Intervention/treatment Phase
Oral Cancer Device: Polarized Reflectance Spectroscopy System Phase 1

Detailed Description:

The clinician will place a fiber-optic probe designed to measure the polarized reflectance spectra over the visible optical region on a site of interest in the subject's mouth, including lesional mucosa, normal adjacent and contralateral mucosa. The site for placement of the probe will be determined by the examiner, an experienced Oral Pathologist. The probe examination will take no more than 15 minutes in addition to the subject's appointment time for their routine visits.

A 4um unstained tissue section from surgery or biopsy, part of their scheduled care, will be requested for quantitative histological analysis. The morphometric parameters obtained from polarized reflectance measurements will be compared with the histology and quantitative pathology (nuclear phenotype score) from the tissue sections from the lesion. The collected spectra data from normal looking areas from adjacent normal looking mucosa and contralateral mucosa will be used to determine patient to patient variation in the polarized reflectance of oral mucosa.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 40 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Diagnostic
Official Title: Evaluation of Polarized Reflectance Spectroscopy for Detection of High-risk Oral Lesions
Study Start Date : December 2011
Actual Primary Completion Date : December 2015
Actual Study Completion Date : December 2015

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Oral Cancer

Arm Intervention/treatment
Polarized probe measurement.
All patients belong under this arm as all will be measured by the polarized probe and the data will be compared to the biopsy site's pathology results.
Device: Polarized Reflectance Spectroscopy System
Fiber optic probe designed to measure polarized reflectance spectroscopy will be used to gather data from all study participants.
Other Names:
  • Polarized Reflectance Spectroscopy System.
  • Research device developed at MD Anderson Cancer Centre, Dept of Imaging Physics specifically for this study.

Primary Outcome Measures :
  1. To use the spectroscopic data collected to create a model for normal, dysplastic and cancerous tissue. [ Time Frame: 2 years ]
    The goals of the statistical analysis will be to determine an appropriate model for predicting whether the lesion is normal or abnormal (dysplasia or carcinoma) based on spectroscopic characteristics. The investigators will estimate sensitivity and specificity of the predictions made by the model and compare this to sensitivity and specificity of standard white light clinical examination currently used in clinical practice.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • You attend the Dental Department at the British Columbia Cancer Agency
  • You have an abnormal lesion in the mouth
  • You fully understand the study and give your informed consent to participate as demonstrated by signing this consent form

Exclusion Criteria:

  • You are under the age of 18 years.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01604759

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Canada, British Columbia
British Columbia Cancer Agency - Vancouver Centre
Vancouver, British Columbia, Canada, V5Z 1L3
Sponsors and Collaborators
British Columbia Cancer Agency
M.D. Anderson Cancer Center
University of Texas at Austin
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Principal Investigator: Catherine Poh, M.D. Ph.D British Columbia Cancer Agency
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Responsible Party: British Columbia Cancer Agency Identifier: NCT01604759    
Other Study ID Numbers: H10-01313
5RO1EB00354004 (PC-1) ( Other Grant/Funding Number: NIH )
First Posted: May 24, 2012    Key Record Dates
Last Update Posted: January 31, 2017
Last Verified: January 2017
Keywords provided by British Columbia Cancer Agency:
Mouth Neoplasms
Mouth Diseases
Additional relevant MeSH terms:
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Mouth Neoplasms
Head and Neck Neoplasms
Neoplasms by Site
Mouth Diseases
Stomatognathic Diseases