Clinical Study on the Effect of Removal of Porphyromonas Gingivalis on Prognosis of Esophageal Cancer After Radical Surgery

Esophagectomy is an important means of radical treatment of esophageal cancer, but due to local recurrence and metastasis, the 5-year survival rate of patients with esophageal cancer is only 20-30%. Studies have reported that about 50% of patients relapse within 1 year after surgery, and the short-term recurrence rate is high. Therefore, reducing the recurrence rate of esophageal cancer after operation is an important way to improve its prognosis. Porphyromonas gingivalis infection in ESCC tissues was significantly higher than that in paracancer tissues, and was significantly positively correlated with cancer cell differentiation, lymph node metastasis, TNM stage, and shortened survival of ESCC patients. In summary, porphyromonas gingivalis plays an important role in postoperative recurrence of esophageal cancer. Elimination of porphyromonas gingivalis can significantly reduce the recurrence rate of esophageal cancer after operation. Tinidazole is a class of nitroimidazole drugs. It has been pointed out that the pharmacological mechanism of Tinidazole is to inhibit the DNA synthesis of pathogenic bacteria, so as to eliminate bacteria in periodontal tissues and inhibit local inflammation. Based on this, we designed and fabricated a novel oral microneedle patch loaded with tinidazole. Tinidazole oral microneedle patch can effectively remove porphyromonas gingivalis and promote the repair of gingival tissue. In this study, based on the combination of mechanical removal and antibacterial treatment, a combination of ultrasonic dental cleaning and tinidazole oral composite microneedle patch was designed to completely remove porphyromonas gingivalis in oral cavity, and to evaluate the effect of removal of porphyromonas gingivalis in oral cavity on the prognosis of esophageal cancer after radical surgery.

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Key information

Conditions

Evaluate the DFS of Patients With Esophageal Cancer Who Underwent Radical Operation After Regular Removal of Porphyromonas Gingivalis

Age range

18 year–85 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 3

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Age 18-85 years old
Histologically confirmed esophageal cancer
Patients undergoing radical resection for esophageal cancer who do not require or are not eligible for radiotherapy，T1-T4N0-3M0
ECOG：0～1
Expected survival ≥12 weeks
Radical surgery was performed within 28 days and met R0 criteria
The patient did not receive neoadjuvant radiotherapy/neoadjuvant concurrent chemoradiotherapy before surgery and no longer received adjuvant radiotherapy/adjuvant chemoradiotherapy
If the major organs function normally, the following criteria are met: HB≥90g/L；b.ANC≥1.5×109/L；c.PLT ≥80×109/L；ALB≥30g/L；b.ALT和AST≤2.5ULN
Women of reproductive age should agree to use contraceptives (such as Iuds, contraceptives, or condoms) during the study period and for 6 months after the study ends; Have a negative serum or urine pregnancy test within 7 days prior to study enrollment and must be a non-lactating patient; Men should consent to patients who must use contraception during the study period and for 6 months after the end of the study period
The subjects voluntarily joined the study, signed informed consent, had good compliance, and cooperated with follow-up

Exclusion criteria

Does not meet the above inclusion criteria
Patients with distant visceral metastases
Patients requiring adjuvant radiotherapy after neoadjuvant radiotherapy or radical surgery
Allergic to tinidazole or metabolic disorder
Patients in need of warfarin anticoagulation and those unable to abstain from alcohol
Patients who do not tolerate ultrasonic dental cleaning
Pregnant or lactating women
Patients with other malignancies within 5 years (except cured basal cell carcinoma of the skin and cervical carcinoma in situ)
Patients with a history of psychotropic substance abuse who are unable to abstain or have mental disorders
Patients who have participated in clinical trials of other drugs within four weeks
Patients with concomitant diseases that, in the investigator's judgment, seriously endanger patient safety or interfere with the patient's completion of the study
Patients with recurrent mouth ulcers or other oral diseases that affect the oral flora
Patients with chronic infectious diseases or autoimmune diseases requiring prolonged or repeated use of antimicrobials or glucocorticoids
The researchers did not consider it suitable for inclusion

Treatment and study plan

Tinidazole oral microneedle patch

Combination Product

Ultrasonic teeth cleaning: After gargling with compound chlorhexidine gargle or 3% hydrogen peroxide gargle for 1 minute, the teeth were cleaned by ultrasonic wave. After the teeth were cleaned, the wound was rinsed with 3% hydrogen peroxide to stop bleeding. Immediately after the ultrasonic cleaning, two pieces of tinidazole oral composite microneedle patch were applied to the upper and lower gums close to the inside of the first molar, especially on the tooth loss or damage, and the mouth was kept closed for 15 minutes. After the microneedle was fully degraded, the room could be left.

Other names: Ultrasonic tooth cleaning

Primary outcomes

DFS

Time frame: 5 years

Disease-free survival

Sponsors and collaborators

Lead sponsor

The First Affiliated Hospital of Henan University of Science and Technology

Other

Registry information

Official study title

Porphyromonas Gingivalis Elimination From Oral Improves Esophageal Cancer Patients Survival After Radical Operation

Important dates

Study start: 2024
Primary completion: 2026
Study completion: 2027
First posted: May 17, 2024
Registry last updated: May 17, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.