Early Diagnosis of Colorectal Cancer Based on a Non-invasive Metabolomics Profile

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

2000 participants

Study Classification

OBSERVATIONAL

Study Start Date

2019-07-20

Study Completion Date

2040-06-30

Brief Summary

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Colorectal cancer is the most frequent tumor in our environment if both sexes are considered together. Every year almost 800 cases are diagnosed in the districts of Tarragona. A little more than half of colorectal cancers are cured with surgery, with or without the addition of complementary treatments with chemotherapy and/or radiation therapy. Those who are not cured is because at the time of diagnosis the disease has already spread or they spread after having been treated surgically with curative intent.

The purpose of the EarlyCRC project is to determine whether metabolites (substances of low molecular weight) can be found in the urine and stool of patients with colorectal cancer or polyps that can be easily and cheaply differentiated (urine or stool analysis) between the patients affected by colorectal cancer or polyps, from healthy individuals. For the identification of these possible metabolites, the urine analysis will be performed using the usual techniques in metabolomics, which studies the existing metabolites in biological processes.

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Detailed Description

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Colorectal cancer (CRC) is the most frequent neoplasm in our environment if both sexes are considered together. It is the second most common neoplasm in women, after breast cancer, and the second most common in men after prostate cancer. In terms of mortality, CRC is the second leading cause of cancer death in men, after lung cancer, and second in women after breast cancer. For the year 2013, 735 cases and 262 deaths from colorectal cancer were estimated in the province of Tarragona. Since 1982, incidence rates have increased annually by more than 3% in men and by almost 2% in women. It is estimated that if no early diagnosis program was carried out, in 2020 about 900 new cases of CRC would be diagnosed, and about 300 deaths would occur1.

These figures vary according to one or other geographical areas of the world. If we consider the European population as a whole, colorectal cancer is the third most common tumor for both sexes together, after breast cancer and prostate cancer. It is the third most common tumor in men, after prostate cancer and lung cancer, and the second most common in women, after breast cancer. The mortality figures in Europe place colorectal cancer in third place for both sexes together, after lung and breast cancer, so that in men it is surpassed only by lung cancer and in women by breast cancer2 .

As in the vast majority of cancers, age is the main non-modifiable risk factor for colon and rectal cancer. More than 90% of cases are diagnosed in people over 50 years old. There is an increased risk of CRC in those with hereditary diseases such as familial colonic polyposis or Lynch syndrome, although the vast majority of colorectal cancers (more than 90% of cases) do not have a hereditary component. With respect to the modifiable risk factors, one of the most important is the consumption of red and processed meat, or meat that is heavily cooked or cooked in direct contact with fire. On the other hand, fiber, fruit and vegetable consumption, as well as dairy and micronutrients such as folate and calcium, are protective against this cancer. All these dietary factors affect the risk of the appearance of the precursor lesions of cancer, colorectal adenomas. Obesity is another risk factor, and exercise and physical activity act as protectors. Thus, CRC is considered to be caused by a combination of genetic and environmental factors, which lead to the appearance of adenomatous polyps as a premalignant lesion, and which over time acquire new mutations in their genetic material until become an adenocarcinoma1,3.

The early diagnosis of cancer and, more specifically, that of colorectal cancer, aims to detect colorectal tumors in the initial stages as well as premalignant lesions, colonic polyps. As with all neoplastic diseases, the stage at the time of diagnosis is the most important prognostic factor when it comes to survival. In this way, it has been shown that a test capable of easily and minimally invasively diagnosing the initial stages of colorectal cancer can reduce mortality from this tumor by 15-20% in program participants4. The fact of being able to detect benign polyps not only reduces mortality from colorectal cancer, but also decreases its incidence, since the removal of polyps prevents their subsequent malignancy. Currently, the test used in the early diagnosis of colorectal cancer is the determination of occult blood in faeces from the age of 50, every two years. In the event that the test comes out positive, the patient is subsequently subjected to a colonoscopic study. Collection of the faecal sample by itself may have low acceptance and therefore may compromise population participation in screening. A urine test, with an easier and "cleaner" collection technique, could be an added advantage in an early diagnosis program.

Conditions

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Colorectal Cancer Colorectal Adenoma Colorectal Polyp Healthy

Study Design

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Observational Model Type

COHORT

Study Time Perspective

CROSS_SECTIONAL

After patients agreement, urine and FOBT are collected before the colonoscopy and before the diet preparation of the colon.

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Patients with a positive FOBT test result from the Colorectal Cancer Early Detection Program and referred for a colonoscopy.

Exclusion Criteria

* Patients diagnosed with another primary neoplasm in the last 5 years, with the exception of carcinoma in situ of the cervix or non-melanoma skin cancer.
* Patients with severe kidney disease stage IV (creatinine clearance \< 30 ml/min).
* Patients with severe active liver disease (hepatitis, cirrhosis).
* Refusal to sign informed consent.

Minimum Eligible Age

50 Years

Maximum Eligible Age

70 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No