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73 patients are to be recruited from the ones that go to the oral medicine service at the university clinic of Rey Juan Carlos in Madrid that present a compatible clinic diagnostic compatible with oral potentially malignant disorders. Each patient will receive first an intraoral exploration, taking note of location and size of the injury. After that, an exploration with the GOCCLES® device will be made, also taking note of the location and size data. Thereafter, the blue toluidine stain will be used, taking note of the size and location of the marked areas. Pictures will be taken through all the steps. Finally, a biopsy will be made of the area or areas the clinic considers and/or marked by the device or the toluidine blue.

Inspection using GOCCLES®. An UV light source will be administered, with polymerization lamp sdi radii xpert, with a potency of 1500 mW/cm2 and a wavelength of 440-480nm, applied at 20cm of the injury.

Notes will be taken on the location and size of the injury observed with the device.

Image register using the GOCCLES® photographic filter for mobile devices. The same light source will be used.

GOCCLES

To value the toluidine blue diagnosis capacity, the sequence described by Mashberg will be followed: The patient will realize a mouthwash with acetic acid at 1% for 20 seconds. Two using water for 20 seconds. Toluidine blue at 1% will be applied for 20 seconds. New mouthwash with acetic acid for 60 seconds and a final mouthwash with water.

Notes on the and pictures will be taken on the location and size of the injury.

Toluidine blue stain

The area to biopsy will be chosen, and, using local anaesthesia, it will be resected. The specimens will be sent to the oral and maxillofacial pathology diagnostic service of the University of Basque Country for anatomopathological study

Biopsy

Rocío Teresa Martín Muñoz

María Victoria Fuentes Fuentes

Antonio Francisco López Sánchez

Blanca del Carmen Migueláñez Medrán

Jesús Rodríguez Molinero

Oral potentially malignant disorders (OPMDs) are chronic pathologies which can suffer dysplastic alterations and evolve into oral cancer.

The diagnosis of those pathologies is commonly done by visual inspection, which is not capable of determining the presence or not of dysplasia. Furthermore, this type of diagnosis depends greatly on the expertise and training of the professional.

In recent years, new methods that can help early oral cancer diagnosis have been developed. A new device has been commercialized, named GOCCLES® (Glasses for Oral Cancer Curing Light Exposed Screening), based on the autofluorescence principle.

The hypothesis of this study is that GOCCLES® device could be an effective tool to help in early detection of oral cancer.

The main objective of this study is to establish GOCCLES® autofluorescence method predictive value in early diagnostic of malignant oral disorders and/or potentially malignant oral cavities.

The secondary objectives are comparing the match in zone detection between this method and blue toluidine staining, and valuing if blue toluidine staining brings additional information to the dysplastic injuries diagnoses when combined to the GOCCLES® device.

This study will follow the STARD (Standards for Reporting of Diagnostic Accuracy Studies) guideline.

It is intended to recruit 73 patients from the oral medicine service at the university clinic of Rey Juan Carlos University in Madrid, that present a compatible clinic diagnostic with oral potentially malignant disorders. Each patient will receive first an intraoral exploration, taking note of location and size of the injury. After that, an exploration with the GOCCLES® device will be made, also taking note of the location and size data. Thereafter, the blue toluidine stain will be used, taking note of the size and location of the marked areas. Pictures will be taken through all the steps. Finally, a biopsy will be made of the area or areas the clinic considers and/or marked by the device or the toluidine blue.

DETAILED PROCEDURE:

1. Specific location of the injury or injuries will be taken.
2. Its maximum size will be measured.
3. Photographic record with Canon EFS 60mm camera and Canon Macro Ring Lite MR-14EX ring flash.
4. Inspection using GOCCLES®. An UV light source will be administered, with Sdi Radii Xpert polymerization lamp with a potency of 1500mW/cm2 and a wavelength of 440-480nm, applied at 20cm of the injury.
5. Notes will be taken on the location and size of the injury observed with the device.
6. Image register using the GOCCLES® photographic filter for mobile devices. The same light source will be used.
7. To value the toluidine blue diagnosis capacity, the sequence described by Mashberg will be followed: The patient will realize a mouthwash with acetic acid at 1% for 20 seconds. Two using water for 20 seconds. Toluidine blue at 1% will be applied for 20 seconds. New mouthwash with acetic acid for 60 seconds and a final mouthwash with water.
8. Notes on the and pictures will be taken on the location and size of the injury.
9. The area to biopsy will be chosen, and, using local anaesthesia, it will be resected.
10. The sample or samples will be sent to the Oral and Maxillofacial Pathology Diagnostic Service of the University of the Basque Country, properly preserved in formalin and with the corresponding report.
11. In addition, the following data of each patient will be registred: age, sex, harmful habits, medical history of interest, type of injury, location of the injury, size of the injury and presumptive diagnosis.

If the area chosen by the investigator as the most adequate one matches the one referred by the GOCCLES® glasses and the toluidine blue, only one biopsy will be made. Otherwise, two or three samples will be taken. The patient will be called after 7-15 days, to receive the results and the retiring of the suture if required, and to start treatment in cases which it is needed.

A lesion will be considered positive if, when using GOCCLES® device, a loss of fluorescence is observed in an area or areas of the lesion, that is, when a brownish, brown or dark brown area or areas are observed.

A lesion will be considered to be positive for toluidine blue staining when, after carrying out the sequence described by Mashberg, an intense blue staining is produced in an area or areas of the lesion

A positive result will be considered after performing biopsy in those cases in which the anatomopathological analysis indicates the presence of dysplasia, whatever its grade, or the presence of malignant transformation.

Predictive Value of GOCCLES® Device for Early Diagnosis of Oral Potentially Malignant Disorders

Predictive Value of GOCCLES® (Glasses for Oral Cancer Curing Light Exposed Screening), Device for Early Diagnosis of Oral Potentially Malignant Disorders

Intraoral examination of the injury with white light. Information about location will be recorded in a data collection document, individual for each patient.

Intraoral examination of the injury with white light. The size of the injury will be measured with an acetate rule. This information will be recorded in a data collection document, individual for each patient.

Photographs of the lesion will be recorded with a Canon EFS 60 mm camera and Canon Macro Ring Lite MR-14EX ring flash

An UV light source will be administered, with polymerization lamp sdi radii xpert, with a potency of 1500 mW/cm2 and a wavelength of 440-480nm, applied at 20cm of the injury. Notes will be taken on the location and size of the injury observed with the device.

Image register using the GOCCLES® photographic filter for mobile devices. The same light source will be used.

For this procedure, Mashberg technique will be realised. The patient will realize a mouthwash with acetic acid at 1% for 20 seconds. Two using water for 20 seconds. Toluidine blue at 1% will be applied for 20 seconds. New mouthwash with acetic acid for 60 seconds and a final mouthwash with water. Information about location and size of the stained area will be recorded in the data collection document. Photographs will be taken with the Canon EFS 60mm camera and Canon Macro Ring Lite MR-14EX ring flash.

The area to biopsy will be chosen, and, using local anaesthesia, it will be resected. If the area chosen by the investigator as the most adequate one matches the one referred by the GOCCLES® glasses and the toluidine blue, only one biopsy will be made. Otherwise, two or three samples will be taken.

Universidad Rey Juan Carlos

Bachelor of Dentistry and Specialist in Oral Medicine

Skin and Connective Tissue Diseases

Symptoms and General Pathology

Keratosis

Hyperplasia

Precancerous Conditions

Leukoplakia

Erythroplasia

Erythroplakia

No dysplasia, mild, moderate, severe dysplasia, CIS

Assessment for risk of progression to oral cancer

STRATICYTE™ Test

Jody Filkowski, BSc, MSc, PhD

Jason TK Hwang, HBSc, MSc, PhD

Andrew G Sikora, MD, PhD

Simon W Young, DDS, MD, PhD

The purpose of this study is to validate the ability of the STRATICYTE™ predictive model to predict the transformation of oral potentially malignant disorders (OPMDs) to oral squamous cell carcinoma (OSCC) in a retrospective cohort of patients who received biopsies.

The study objectives are to:

1. Evaluate STRATICYTE™ sensitivity and specificity in a cohort of patients that meet the inclusion/exclusion criteria.
2. Identify patient and clinical characteristics influencing the sensitivity and specificity of the STRATICYTE™ model.
3. Estimate the correlation between STRATICYTE™ outcome and time to a positive diagnosis of oral cancer.

FFPE specimens immunohistochemically stained with S100A7

Evaluation of Oral Potentially Malignant Disorders (OPMDs) With STRATICYTE™

Standard measures of accuracy calculated using cross-tabulation of predicted risk category and confirmed cancer progression over a 5-year period from biopsy

Kaplan-Meier analyses to compare time to a positive diagnosis of oral cancer between patients/biopsies with a STRATICYTE™ classification of Low- and Elevated-Risk.

From all possible pairs of patients, compute the number of concordant and discordant pairs. Compute C-index as the proportion of all possible pairs that are concordant.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Predictive Value of GOCCLES® Device for Early Diagnosis of Oral Potentially Malignant Disorders	NCT05562375	Oral Potentiall... Oral Cancer	GOCCLES Toluidine blue ... Biopsy	18 Years -	Universidad Rey Juan Carlos
Evaluation of Oral Potentially Malignant Disorders (OPMDs) With STRATICYTE™	NCT05853783	Mouth Diseases	STRATICYTE™ Tes...	18 Years -	Proteocyte Diagnostics Inc.
Predictive Value of GOCCLES® Device for Early Diagnosis of Oral Potentially Malignant Disorders	NCT05562375	Oral Potentiall... Oral Cancer	GOCCLES Toluidine blue ... Biopsy	18 Years -	Universidad Rey Juan Carlos
Predictive Value of GOCCLES® Device for Early Diagnosis of Oral Potentially Malignant Disorders	NCT05562375	Oral Potentiall... Oral Cancer	GOCCLES Toluidine blue ... Biopsy	18 Years -	Universidad Rey Juan Carlos

Spots Global Cancer Trial Database for oral potentially malignant disorders