Japanese National Computed Tomographic (CT) Colonography Trial

Colonic Neoplasms Clinical Trial

— JANCT  

Official title:

Evaluation of Accuracy of Computed Tomographic Colonography (CTC) in the Diagnosis of Colorectal Tumors by Gastroenterologists and Radiologists With Computer-aided Detection (CAD): A Multicenter Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00997802
• Other study ID #: UMIN000002097
• Status: Completed
• Phase: N/A
• First received: October 18, 2009
• Last updated: March 16, 2017
• Start date: October 2009
• Est. completion date: January 2017

Study information

• Verified date: March 2017
• Source: Japanese CT Colonography Society
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to evaluate the sensitivity of computed tomographic colonography (CTC) in detecting colorectal polyps and cancers in 1,500 subjects at increased risk of colorectal cancer (CRC), using optical colonoscopy as the reference standard.

Description:

The investigators will evaluate the sensitivity of CTC in detecting colorectal polyps and cancers (at least 6 mm in diameter) in 1,500 subjects at increased risk of colorectal cancer (CRC), using optical colonoscopy as the reference standard. The primary endpoint will be sensitivity in the detection of colorectal polyps and cancers that are at least 6 mm in diameter. The secondary endpoints will include specificity and predictive values in the detection of colorectal polyps and cancers.

This clinical study will also evaluate the differences of the detection accuracies between human readings with and without computer-aided detection (CAD) that automatically detects colonic lesions in CTC images and presents the detected lesions to the readers. This clinical study will also compare performance between radiologists and gastroenterologists in detecting colorectal lesions in CTC images.

All the CTC images and their interpretations, optical colonoscopy reports and images, and pathology reports of resected colorectal lesion will be prospectively collected from 12 Japanese hospitals participating in the trial. All patients' information will be completely anonymized at each site before any analysis of the data takes place.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 1257
• Est. completion date: January 2017
• Est. primary completion date: December 11, 2015
• Accepts healthy volunteers: No
• Gender: All
• Age group: 20 Years and older

Eligibility

Inclusion Criteria:

• Outpatients who are eligible for optical colonoscopy.

• Aged 20 years or older.

• Major functions of organs of the subjects are in a good condition.

• Signed informed consent forms are obtained from the patients.

Exclusion Criteria:

• Known colorectal polyps or cancers at any site at the time of enrollment.

• Patients with inflammatory bowel disease.

• Fulfillment of clinical criteria for diagnosis of FAP or HNPCC (Amsterdam criteria).

• Serious medical conditions that may increase the risk of optical colonoscopy or are so severe that screening would have no benefit.

• Previous colorectal surgery.

• Gastric or intestinal stenosis, abdominal adhesions, bowel obstruction or perforation, toxic megacolon.

• Evidence of an increased risk in carrying out bowel preparation or CTC exams.

• Possibility of pregnancy.

• Optical colonoscopy or barium enema carried out within the last 3 years.

• Patients with psychological conditions that contraindicate colonoscopy or that make them irrelevant to participate in the trial.

• Iodine hypersensitivity.

• Severe thyroid disease.

• Claustrophobia.

• Severe deafness.

• Subjects whose eligibility for this clinical trial is not appropriate by other reasons.

Related Conditions & MeSH terms

• Colonic Neoplasms
• Colonic Polyps

Intervention

Device:
• CT colonography and optical colonoscopy
All patients will undergo CT colonography and optical colonoscopy.

Locations

Country	Name	City	State
Japan	Tokyo Women's Medical University Medical Center East	Arakawa-ku	Tokyo
Japan	Hamamatsu South Hospital	Hamamatsu	Shizuoka
Japan	Kamigoto Hospital	Kamigoto	Nagasaki
Japan	Kanazawa University Hospital	Kanazawa	Ishikawa
Japan	Kawasaki Medical School	Kurashiki	Okayama
Japan	Otarukyokai Hospital	Otaru	Hokkaido
Japan	Hokkaido Gastroenterology Hospital	Sapporo	Hokkaido
Japan	Hokkaido Social Insurance Hospital	Sapporo	Hokkaido
Japan	Tonan Hospital	Sapporo	Hokkaido
Japan	Jichi Medical University Hospital	Shimono	Tochigi
Japan	Showa University Northern Yokohama Hospital	Yokohama	Kanagawa
United States	Japanese CTC Society, 3D imaging Laboratory, Massachusetts General Hospital	Boston	Massachusetts

Sponsors (1)

Lead Sponsor	Collaborator
Japanese CT Colonography Society

Countries where clinical trial is conducted

United States,  Japan, 

References & Publications (1)

Nagata K, Endo S, Honda T, Yasuda T, Hirayama M, Takahashi S, Kato T, Horita S, Furuya K, Kasai K, Matsumoto H, Kimura Y, Utano K, Sugimoto H, Kato H, Yamada R, Yamamichi J, Shimamoto T, Ryu Y, Matsui O, Kondo H, Doi A, Abe T, Yamano HO, Takeuchi K, Hanai — View Citation

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	sensitivity in the detection of colorectal polyps and cancers in CTC		1.5 years
Secondary	specificity and predictive values in the detection of colorectal polyps and cancers in CTC.		1.5 years

External Links

•   Original Contributions