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CompletedNCT06087042Updated Oct 17, 2023

Dipeptidyl Peptidase-4 Link With Oral Cancer and Premalignant Lesions

An observational study in Oral Premalignant Lesions as Leukoplakia and Lichen Planus and Oral Cancer, sponsored by Fayoum University. Completed at 1 site in Egypt. Open to participants aged 30 Years to 65 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2023-10-17.

Sponsored by Fayoum University · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
45
Ages
30 Years to 65 Years
Sex
All
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Study summary

Aim: The current study targets linking serum and salivary dipeptidyl peptidase-4 with oral squamous cell carcinoma and comparing it with potentially malignant lesions and control to validate dipeptidyl peptidase-4 as a diagnostic marker for early detection of oral cancer and to reveal its possible role in carcinogenesis.

Methodology: A total of 45 patients were recruited and subdivided into 2 groups: Group I: 15 patients having oral squamous cell carcinoma. Group II: 15 patients with potentially malignant lesions (leukoplakia and oral lichen planus) compared to 15 systemically healthy participants having no oral mucosal lesions acting as a control group (Group III). Serum and whole unstimulated salivary samples were collected from all participants to evaluate dipeptidyl peptidase level in different groups using enzyme linked immune-sorbent assay (ELISA) kit. ROC analysis was done to reveal area under the curve, sensitivity, specificity and diagnostic accuracy of DPP-4 among different groups.

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Conditions studied

  • Oral Premalignant Lesions as Leukoplakia and Lichen Planus
  • Oral Cancer

Keywords

  • oral cancer
  • saliva
  • serum
  • dipeptidyl peptidase
  • potentially malignant lesions.
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In context

Lichen Planus

74 studies on the registry are indexed under Lichen Planus; 15 are open to participants now.

This study's enrollment of 45 is below the median of 80 across 17 observational studies indexed under Lichen Planus.

Browse Lichen Planus studies →

Lead sponsor

Fayoum University is the lead sponsor of 148 studies on the registry; 44 are open to participants now.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
30 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

adult individuals entering in the out patient clinics of oral medicine and diagnosis department

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.

Inclusion criteria

  • systemically healthy
  • No current medication,
  • both genders with age ranging from 30 to 65 years old.
  • having oral leukoplakia, oral lichen planus or oral squamous cell carcinoma

Exclusion criteria

Exclusion Criteria:

  • systemic disease
  • pregnancy
  • lactation
  • being diagnosed with any other oral mucosal lesion
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Study design

Observational model
Case-control
Time perspective
Prospective
Enrollment
45 participants (actual)
Patient registry
No

Groups and cohorts

  • Group I

    patients suffering from oral squamous cell carcinoma

    Diagnostic Test: serum and unstimulated salivary samples

  • Group II

    patients diagnosed with potentially malignant lesions such as leukoplakia, and dysplastic erosive or atrophic oral lichen planus

    Diagnostic Test: serum and unstimulated salivary samples

  • Group III

    individuals with no oral mucosal lesions

    Diagnostic Test: serum and unstimulated salivary samples

Interventions

  • Diagnostic testserum and unstimulated salivary samples

    Participants were told to cease smoking, eating, or drinking before the collection of samples by about half an hour. Obtaining the sample was done by demanding the individual to swallow then incline his head forward to expectorate saliva in a sterile tube for about 3 min. Afterwards the samples were coded by serial numbers then stored at -20°C until being assessed. Under aseptic circumstances and using plain tubes, 5ml peripheral venous blood samples were collected from all participants by standard venipuncture. Samples were transported to biochemistry laboratory and centrifuged followed by filtration of the clarifying supernatant and then stored at -20ºC

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What researchers measure

Primary outcomes

  1. DPP-4 level detection

    level of DPP-4 is measured in all collected serum and salivary samples

    Time frame: level of DPP-4 is measured after the completion of all sample collection carried at the day of enrollment of subjects in the investigation after diagnosis confirmation

07

Study locations

1 site
  • faculty of dentistry, Fayoum university
    Fayoum, Egypt
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References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 17, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT06087042
Lead sponsor
Fayoum University
Responsible party
Nayroz Tarrad (associate professor, Fayoum University) — Principal investigator
First posted
Oct 17, 2023
Start date
Aug 15, 2023
Primary completion
Oct 1, 2023
Completion
Oct 1, 2023
Last update
Oct 17, 2023

Study contacts

Nayroz Tarrad, associate professor
principal investigator · faculty of dentistry, Fayoum university

Oversight

FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2023. You cannot join it, but the record below documents what was studied.

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