Active clinical trials for "Mouth Neoplasms"

Reduce the incidence of post-operative infections after ENT surgery and flap reconstruction by performing preoperative oral and dental care

Synucleins are a family of small, highly conserved proteins found in vertebrates and are specially abundant in neurons particularly in presynaptic terminals (Surguchov et al., 2001). Gamma-synuclein is the third member of the synuclein family, and is predominantly found in the cytosol of tumor cells and functions both intra- and extra-cellularly. It is involved in the pathogenesis of different types of cancer and some neurodegenerative diseases (Liu et al., 2018). Smoking - a major risk factor for oral cancer and its progression - and nicotine-containing products were found to time-dependently up-regulate the Gamma-synuclein expression in cancer cells (Hsu et al., 2020a). Gamma-synuclein is released from tumor cells and was found to be elevated in tumors such as urinary bladder cancer (Liu et al., 2016), colorectal cancer, gastric adenocarcinomas and esophageal cancer (Liu et al., 2012). It is present in blood, serum, cerebrospinal fluid and saliva. The detection of extracellular synucleins in body fluids can reveal the first steps of the disease thus it can be used as a potential tool for early cancer detection (Surguchov, 2016). This study aims to identify the diagnostic accuracy of Gamma-synuclein in differentiating between oral malignant lesions and oral premalignant lesions.

Study on the carcinogenesis of Gα12 in oral cancer, and chemopreventive possibility for the treatment of oral cancer using Ga12 inhibitor.

The role of vascular endothelial growth factor-C (VEGF-C) and its receptors induced lymphangiogenesis and host inflammatory responses on the carcinogenesis of oral cancers and premalignant lesions

The mortality rate of oral cancer in Taiwan is still high with no decrease. One of the reasons result in these situations is the patent visits hospital for treatment in late stage of oral cancer. Recently, the government makes effort in oral cancer screening to find oral potentially malignant disorders (OPMD) early. However, there is no conscience in treatment strategies of OPMD up to now. In this study, we will set a OPMD data bank, and use the cases to find out the potential biomarker, which is able to predict the oral cancer malignant transformation. Sixty OPMD with oral cancer transformation will be recruited, and 60 OPMD with no oral cancer malignant transformation will also be enrolled as the disease control group. Besides, 20 normal cases and 60 oral cancer cases resulting from previous OPMD will be collected. All those groups will detect the expression of p62/SQSTM1 to investigate the possibility that p62/SQSTM1 as a biomarker to predict the malignant transformation of OPMM, and a guideline to treat or not to treat OPMD.

Evaluate the ability to image oral mucosa in healthy volunteer by nonlinear microscopy

The Role of microRNA-29b in the Oral Squamous Cell Carcinoma

Oral cancer starts in the mucosa of the mouth and the most common site is the tongue and gingiva. One of the most important issues for the prognosis is to surgically remove all the cancer, at the sides as well as at the deep margin. To accomplish that, it is crucial to identify the border between tumour and healthy tissue. Traditionally white light from a head light or operation theatre lamp is used to illuminate the area of the tumour. Narrow Band Imaging (NBI) is an optical technique where ordinary white light is filtered so only the blue light in it is used. Illuminating the mucosa with this blue light through an endoscope with high definition image, makes the blood vessels appear more clearly. The altered blood vessels that the cancer produce can thereby be seen and mark the area where the tumour starts. This study examines if NBI is helpful in the decision of where the border between the cancer and the normal mucosa is. If so, NBI might improve the possibility to remove all cancer tissue compared to using the ordinary white light. This study will also increase the knowledge about the NBI technique, which is helpful in the examination of patients with suspected head and neck cancers and at the follow-up of patients after treatment. Participants are patients with oral cancer presenting at the otorhinolaryngology department in Örebro University hospital in Sweden for surgical treatment. The surgery will be done in the usual fashion but the mucosa surrounding the tumour will also be illuminated by NBI and this picture of the vessels will be compared to the microscopic analysis by the pathologist, the so called PAD. Thereby we seek to compare the border in white light to the border seen with NBI.

In this study, the investigators want to pre-operatively scan patients who do not have any clinically suspicion of metastases with an 18F-FDG-PET/CT whole body scan , where after they go to lymphoscintigraphy incl. SPECT/CT and sentinel node biopsy. Material from the oral cancer and, after permission of each patient, also normal oral tissue will be analyzed molecular-biologically. Also a blood sample will be analyzed for molecular tumor markers. The investigators want to see if PET/CT is able to detect any signs of sub-clinically metastases. Besides, the investigators want to fusion PET/CT with SPECT/CT data from the lymphoscintigraphy study and improve our PET/CT scanning with a dual-time PET scan of the head-and-neck region.

Diagnosis of oral precancers and cancers using optic coherence tomography