Active clinical trials for "Precancerous Conditions"

We intend to develop intelligent quality control and management software based on the work of digestive endoscopic artificial intelligence in the Department of Gastroenterology, Wuhan University Renmin Hospital, to accurately and comprehensively assess the quality of gastrointestinal endoscopy and to provide a practical basis for improving the quality of digestive endoscopy in our endoscopic center.

Abstract Objective: To study the diagnostic efficiency of Rose Bengal with Toluidine blue in detecting the biopsy sites and thus establish an accurate diagnosis in oral premalignant lesions. Materials and method: In our study 27 patients with 41 lesions were included. Since one patient had not quit the habit in the two weeks following initial examination and another lesion disappeared in the waiting period, 2 patients (3 lesions) were not included in the study. Out of 38 lesions diagnosed based on clinical criteria, 32 were leukoplakia, 5 lichen planus and 1 SCC. After initial examination they were subjected to Rose Bengal and Toluidine blue stain. If stained positive they were subjected to biopsy.

45 individuals were subdivided into 3 groups, 15 patients with oral premalignant lesions, 15 patients with oral malignant lesions and 15 control individuals. Levels of chemerin and MMP-9 were evaluated in serum and saliva of these subjects utilizing the ELISA technique.

RATIONALE: Diagnostic procedures, such as anal swab collection, digital rectal examination, and anal endoscopy and biopsy, may help find and diagnose anal and genital human papillomavirus infection and squamous intraepithelial lesions and help doctors plan better treatment. PURPOSE: This clinical trial is studying ways to detect anal and genital human papillomavirus infection and squamous intraepithelial lesions in HIV-positive patients enrolled in an AIDS cancer clinical trial.

RATIONALE: Studying the genes expressed in samples of tissue from patients with abnormal cells may help doctors identify biomarkers related to cancer. PURPOSE: This clinical trial is identifying biomarkers for early detection of cancer in women with cervical dysplasia or carcinoma in situ of the cervix.

In industrialized countries, cervical cancer is a well controlled disease thanks to the diffusion of Pap test and, in particular, to organized screening programs, which are able to detect and treat pre-invasive lesions (cervical intraepithelial neoplasia, CIN). The human papilloma virus (HPV) has been recognised as the necessary, but not sufficient, cause of cervical cancer, so a new screening test based on the identification of high risk (HR) HPV types has been developed(HPV DNA test). This test has demonstrated to be more effective than cytology in reducing the incidence and the mortality of cervical cancer, but it is less specific, so the use of a test triage is necessary to reduce the number of colposcopies and the risk of over-diagnosis (due to the potential regressivity of pre-invasive lesions). Until now, the triage test used is the cytology (Pap test). Recently specific biomarkers (mRNA and p16 tests) have been introduced for high grade CIN, targeting the molecular alterations strictly associated to transformation rather than simply detecting HR-HPV infections. These tests are more specific than HPV DNA test with a modest reduction of sensitivity for high-grade lesions. This is a multicenter randomised trial nested into some Italian screening programs based on the use of HPV DNA test as primary test. All women with positive HPV DNA test will be tested for cytology and also for mRNA and p16. Women with positive cytology will be referred to colposcopy, while women with negative cytology will be randomized into two arms. This study aims to evaluate if mRNA and p16 could be used as test of triage of HPV DNA or as a primary screening test with direct sending in colposcopy. In particular the main objectives are: Measuring the cumulative detection rate of CIN2+ in the five years following a HPV DNA positive test and mRNA or p16 negative. Measuring the potential reduction of overdiagnosis of using mRNA or p16 test instead of DNA, with direct sending in colposcopy Measuring the reduction of overdiagnosis of cytological triage or triage with mRNA or p16 compared to the direct sending in colposcopy in women with HPV DNA test positive. Secondary objectives are: to assess the feasibility of mRNA testing in primary screening to validate the sample techniques for the new tests to standardize quality controls for the the new tests

Background: Oral epithelial dysplasia (OED) is a condition with an increased risk of oral cancer. Due to the current changes in the factors associated with these diseases (because of human papillomavirus), it is expected that those who have no history of smoking or alcohol, young (<50 years old), and white male would be commonly affected. Those individuals require a higher need for information, preferred a more active role in decision-making, and have a longer lifespan than older individuals. There remain no detailed studies of whether the informational needs delivered to patients with OED met their needs or indeed what information such patient may wish. A few tools are available to evaluate the IN of patients with head and neck disorders. However, the items of these instruments were dedicated to a particular disease (e.g. cancer) and hence are not applicable to be used for OED. Project aims: To evaluate the psychometric properties of the Oral Epithelial Dysplasia Informational Needs Questionnaire (ODIN-Q), developed and revised in the preliminary work for the proposed study, in a cohort of patients with OED. Timescale: 19 months. Clinical significance: This questionnaire can be useful in clinical practice. It could help to meet the patient's information needs and plan educational interventions for those showing unmet needs.

RATIONALE: Studying the chromosomes in samples of bone marrow and blood in the laboratory from patients with cancer or other blood diseases may help doctors learn more about the disease. PURPOSE: This laboratory study is analyzing chromosomes in patients with newly diagnosed multiple myeloma or other blood disease.

RATIONALE: Studying samples of blood and tissue in the laboratory from patients with cancer, patients with colorectal polyps and from patients without polyps may help doctors learn more about changes that occur in DNA and identify biomarkers related to cancer. PURPOSE: This research study is looking at biomarkers in blood and tissue samples from patients with colorectal cancer or colorectal polyps and from patients without polyps (healthy volunteers).

RATIONALE: Studying samples of tissue from smokers and non-smokers in the laboratory may help doctors identify and learn more about biomarkers related to cancer. PURPOSE: This phase II study is looking at biomarkers in the nose, throat, and lung tissue of smokers and non-smokers.