The National CT Colonography Trial (ACRIN6664)
The National CT Colonography Trial: Multicenter Assessment of Accuracy for Detection of Large Adenomas and Cancers in a Healthy Screening Population
RATIONALE: New diagnostic procedures such as computed tomographic colonography may improve the ability to detect colorectal cancer and may provide a less invasive method of detection.
PURPOSE: This clinical trial is studying how well computed tomographic colonography works in screening healthy participants for colorectal cancer.
Tutkimuksen yleiskatsaus
Yksityiskohtainen kuvaus
OBJECTIVES:
Primary
- Compare the sensitivity of computed tomographic colonography (CTC) vs colonoscopy for detecting significantly large lesions (≥ 10 mm in diameter) in asymptomatic participants, in terms of specificity, area under the ROC curve, and predictive values for detecting clinically significant colorectal neoplasia.
Secondary
- Determine the interobserver variation in accuracy of interpreting CTC examinations of these participants, including any benefits of a primary 3-dimensional read and/or independent second interpretations.
- Determine the effects of different colon preparations on the accuracy of CTC in these participants.
- Compare participant acceptance and willingness to have a repeat examination by CTC vs colonoscopy.
- Determine the accuracy of CTC in detecting flat lesions in the colon of these participants.
OUTLINE: This is a multicenter study.
Participants receive an oral laxative, oral bisacodyl, and three doses of oral barium sulphate 24 hours before imaging. After cathartic cleansing, participants undergo computed tomographic colonography followed by colonoscopy.
Participants are followed up for approximately 4 weeks.
PROJECTED ACCRUAL: A total of 2,607 participants will be accrued for this study.
Opintotyyppi
Ilmoittautuminen (Todellinen)
Vaihe
- Ei sovellettavissa
Yhteystiedot ja paikat
Opiskelupaikat
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Arizona
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Scottsdale, Arizona, Yhdysvallat, 85259-5499
- Mayo Clinic Scottsdale
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California
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La Jolla, California, Yhdysvallat, 92093-0658
- Moores UCSD Cancer Center
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Los Angeles, California, Yhdysvallat, 90095-1781
- Jonsson Comprehensive Cancer Center at UCLA
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San Francisco, California, Yhdysvallat, 94121
- Veterans Affairs Medical Center - San Francisco
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Colorado
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Englewood, Colorado, Yhdysvallat, 80112
- Invision/Radiology Imaging Associates - Englewood
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Connecticut
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New Haven, Connecticut, Yhdysvallat, 06520-8028
- Yale Cancer Center
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Illinois
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Chicago, Illinois, Yhdysvallat, 60637-1470
- University of Chicago Cancer Research Center
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Springfield, Illinois, Yhdysvallat, 62781
- Clinical Radiologists, S.C. at Memorial Medical Center
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Maryland
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Baltimore, Maryland, Yhdysvallat, 21231-2410
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
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Massachusetts
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Boston, Massachusetts, Yhdysvallat, 02215
- Beth Israel Deaconess Medical Center
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Minnesota
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Rochester, Minnesota, Yhdysvallat, 55905
- Mayo Clinic Cancer Center
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Missouri
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Saint Louis, Missouri, Yhdysvallat, 63110
- Mallinckrodt Institute of Radiology at Washington University Medical Center
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Texas
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Houston, Texas, Yhdysvallat, 77030-4009
- M.D. Anderson Cancer Center at University of Texas
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Virginia
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Richmond, Virginia, Yhdysvallat, 23298-0037
- Virginia Commonwealth University Massey Cancer Center
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Osallistumiskriteerit
Kelpoisuusvaatimukset
Opintokelpoiset iät
Hyväksyy terveitä vapaaehtoisia
Sukupuolet, jotka voivat opiskella
Kuvaus
Inclusion Criteria
- Male or female outpatients
- Aged 50 years or older
- Scheduled for screening colonoscopy
- Participant's signed informed consent
Exclusion Criteria
Symptoms of disease of the lower gastrointestinal tract, including
- Melanotic stools or/and hematochezia on more than one occasion in the previous six months
- Lower abdominal pain that would normally require a medical evaluation
- Inflammatory bowel disease and/or familial polyposis syndrome
- Serious medical conditions that would increase the risk associated with colonoscopy or are so severe that screening would have no benefit
- Pregnancy
- Previous colonoscopy within the past five years
- Anemia (hemoglobin less than 10 gm/dl)
- Positive fecal occult blood test (FOBT)
Opintosuunnitelma
Miten tutkimus on suunniteltu?
Suunnittelun yksityiskohdat
- Ensisijainen käyttötarkoitus: Seulonta
- Jako: Ei käytössä
- Inventiomalli: Yksittäinen ryhmätehtävä
- Naamiointi: Ei mitään (avoin tarra)
Aseet ja interventiot
Osallistujaryhmä / Arm |
Interventio / Hoito |
|---|---|
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Kokeellinen: CT Colonography
CT colonography conducted during the same assessment as colonoscopy.
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CT colonography performed for comparison with colonoscopy results performed during the same screening assessment.
Muut nimet:
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Mitä tutkimuksessa mitataan?
Ensisijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Number of Participants With Advanced Adenomas (>=10mm) as Determined by Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
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Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=10mm (as measured at pathology) RS-: No Advanced adenomas >=10mm found by colonoscopy (as measured at pathology) |
within 30 days
|
|
Number of Participants With Advanced Adenomas (>=9mm) Detected by CT Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=9mm (as measured at pathology) RS-: No Advanced adenomas >=9mm found by colonoscopy (as measured at pathology) |
within 30 days
|
|
Number of Participants With Advanced Adenomas (>=8mm) Detected by CT Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=8mm (as measured at pathology) RS-: No Advanced adenomas >=8mm found by colonoscopy (as measured at pathology) |
within 30 days
|
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Number of Participants With Advanced Adenomas (>=7mm) Detected by CT Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=7mm (as measured at pathology) RS-: No Advanced adenomas >=7mm found by colonoscopy (as measured at pathology) |
within 30 days
|
|
Number of Participants With Advanced Adenomas (>=6mm) Detected by CT Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=6mm (as measured at pathology) RS-: No Advanced adenomas >=16mm found by colonoscopy (as measured at pathology) |
within 30 days
|
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Number of Participants With Advanced Adenomas (>=5mm) Detected by CT Colonoscopy (Per Patient)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard (RS) for determining the existence of advanced adenomas. RS+: Colonoscopy found at least 1 Advanced adenomas >=5mm (as measured at pathology) RS-: No Advanced adenomas >=5mm found by colonoscopy (as measured at pathology) |
within 30 days
|
Toissijaiset tulostoimenpiteet
Tulosmittaus |
Toimenpiteen kuvaus |
Aikaikkuna |
|---|---|---|
|
Number of Advanced Adenoma or Cancer Lesions (>=10mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Number of Advanced Adenoma or Cancer Lesions (>=9mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Number of Advanced Adenoma or Cancer Lesions (>=8mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Number of Advanced Adenoma or Cancer Lesions (>=7mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Number of Advanced Adenoma or Cancer Lesions (>=6mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Number of Advanced Adenoma or Cancer Lesions (>=5mm) Detected by CT Colonoscopy (Per Lesion)
Aikaikkuna: within 30 days
|
Pathology results from Colonoscopy performed up to 30 days after a CTC examination were used as the reference standard for determining the existence of advanced adenomas.
CTC lesions needed to be within 2 segments and 50% size of the lesions removed via colonoscopy to be considered "detected"
|
within 30 days
|
|
Interobserver Sensitivity Variability
Aikaikkuna: at baseline
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Evaluate interobserver variability in Sensitivity (P(T+|D+)) and 95% CI) when interpreting CTC examinations Each study was randomly assigned to be read independently using either a primary 2D search method (conventional 2D image display with 3D endoluminal problem solving), or a primary 3D search method (including the capability of displaying multiplanar 2D) and without prior knowledge of the colonoscopy results.
A second trained radiologist of similar skill was assigned to read the images using the other modality Readers were then classified as high performing or not high performing
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at baseline
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Yhteistyökumppanit ja tutkijat
Yhteistyökumppanit
Tutkijat
- Opintojen puheenjohtaja: C. Daniel Johnson, MD, Mayo Clinic
Julkaisuja ja hyödyllisiä linkkejä
Yleiset julkaisut
- Vanness DJ, Knudsen AB, Lansdorp-Vogelaar I, Rutter CM, Gareen IF, Herman BA, Kuntz KM, Zauber AG, van Ballegooijen M, Feuer EJ, Chen MH, Johnson CD. Comparative economic evaluation of data from the ACRIN National CT Colonography Trial with three cancer intervention and surveillance modeling network microsimulations. Radiology. 2011 Nov;261(2):487-98. doi: 10.1148/radiol.11102411. Epub 2011 Aug 3.
- Johnson CD, Herman BA, Chen MH, Toledano AY, Heiken JP, Dachman AH, Kuo MD, Menias CO, Siewert B, Cheema JI, Obregon R, Fidler JL, Zimmerman P, Horton KM, Coakley KJ, Iyer RB, Hara AK, Halvorsen RA Jr, Casola G, Yee J, Blevins M, Burgart LJ, Limburg PJ, Gatsonis CA. The National CT Colonography Trial: assessment of accuracy in participants 65 years of age and older. Radiology. 2012 May;263(2):401-8. doi: 10.1148/radiol.12102177. Epub 2012 Feb 23.
- Hara AK, Blevins M, Chen MH, Dachman AH, Kuo MD, Menias CO, Siewert B, Cheema JI, Obregon RG, Fidler JL, Zimmerman P, Horton KM, Coakley KJ, Iyer RB, Halvorsen RA Jr, Casola G, Yee J, Herman BA, Johnson CD. ACRIN CT colonography trial: does reader's preference for primary two-dimensional versus primary three-dimensional interpretation affect performance? Radiology. 2011 May;259(2):435-41. doi: 10.1148/radiol.11100250. Epub 2011 Mar 1.
- Hara AK, Kuo MD, Blevins M, Chen MH, Yee J, Dachman A, Menias CO, Siewert B, Cheema JI, Obregon RG, Fidler JL, Zimmerman P, Horton KM, Coakley K, Iyer RB, Halvorsen RA Jr, Casola G, Johnson CD. National CT colonography trial (ACRIN 6664): comparison of three full-laxative bowel preparations in more than 2500 average-risk patients. AJR Am J Roentgenol. 2011 May;196(5):1076-82. doi: 10.2214/AJR.10.4334.
- Siewert B, Gareen I, Vanness D, et al.: ACRIN 6664: patient acceptance and preferance of CT colonography compared to optical colonoscopy for colon cancer screening. [Abstract] J Clin Oncol 27 (Suppl 15): A-4034, 2009.
- Johnson CD, Chen MH, Toledano AY, Heiken JP, Dachman A, Kuo MD, Menias CO, Siewert B, Cheema JI, Obregon RG, Fidler JL, Zimmerman P, Horton KM, Coakley K, Iyer RB, Hara AK, Halvorsen RA Jr, Casola G, Yee J, Herman BA, Burgart LJ, Limburg PJ. Accuracy of CT colonography for detection of large adenomas and cancers. N Engl J Med. 2008 Sep 18;359(12):1207-17. doi: 10.1056/NEJMoa0800996. Erratum In: N Engl J Med. 2008 Dec 25;359(26):2853.
Hyödyllisiä linkkejä
Opintojen ennätyspäivät
Opi tärkeimmät päivämäärät
Opiskelun aloitus
Ensisijainen valmistuminen (Todellinen)
Opintojen valmistuminen (Todellinen)
Opintoihin ilmoittautumispäivät
Ensimmäinen lähetetty
Ensimmäinen toimitettu, joka täytti QC-kriteerit
Ensimmäinen Lähetetty (Arvio)
Tutkimustietojen päivitykset
Viimeisin päivitys julkaistu (Todellinen)
Viimeisin lähetetty päivitys, joka täytti QC-kriteerit
Viimeksi vahvistettu
Lisää tietoa
Tähän tutkimukseen liittyvät termit
Avainsanat
Muita asiaankuuluvia MeSH-ehtoja
Muut tutkimustunnusnumerot
- CDR0000367101
- U01CA080098 (Yhdysvaltain NIH-apuraha/sopimus)
- U01CA079778 (Yhdysvaltain NIH-apuraha/sopimus)
- ACRIN-6664 (Muu tunniste: CIP)
Yksittäisten osallistujien tietojen suunnitelma (IPD)
Aiotko jakaa yksittäisten osallistujien tietoja (IPD)?
IPD-suunnitelman kuvaus
Researchers may request data from the ACRIN data access committee by reviewing the information at:
https://www.acrin.org/RESEARCHERS/POLICIES/DATAANDIMAGESHARINGPOLICY.aspx
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