About this trial
The purpose of ORACLE is to demonstrate the ability of a novel ctDNA assay developed by Guardant Health to detect recurrence in individuals treated for early-stage solid tumors. It is necessary that ctDNA test results are linked to clinical outcomes in order to demonstrate clinical validity for recurrence detection and explore its value in a healthcare environment subject to cost containment.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age > 18 years old AND
Initial treatment is given with curative/radical intent AND
Are planning to undergo regular follow-up and monitoring for cancer recurrence per standard of care at the enrolling site AND
Provided written informed consent to participate in the study AND
Disqualifiers
History of allogeneic organ or tissue transplant
Index cancer has predominantly neuroendocrine histology
History of another primary cancer diagnosed within 3 years of enrollment, with the exception that in situ cancers, non-melanoma skin carcinomas, localized low- or intermediate risk prostate cancers (defined as cancers confined to the prostate with Gleason score of 7 or lower and prostate-specific antigen (PSA) of less than 20), and stage I papillary thyroid carcinoma, and participants with bilateral/multifocal tumors within the same organ (for example, bilateral breast cancer) are allowed if diagnosed within 3 years of enrollment
Known distant metastasis at time of enrollment (with the exception of participants with limited/resectable stage IV cutaneous melanoma or RCC)
Trial population
The primary study population will include participants with invasive bladder/upper urinary tract carcinoma, NSCLC, breast cancer, cutaneous melanoma, esophageal carcinoma, gastroesophageal junction carcinoma, gastric adenocarcinoma, pancreatic adenocarcinoma, squamous cell carcinoma of the head and neck, epithelial ovarian/Fallopian tube carcinoma, endometrial cancer, renal cell carcinoma (RCC), and colorectal cancer as per inclusion/exclusion criteria below. Inclusion criteria were selected to enroll participants who are predicted to have \>15-20% risk of recurrence within 3 years in order to sufficiently power the study for recurrence events.
Trial design
Cohort
Prospective
Treatments tested in this trial
Guardant Reveal
Diagnostic testGuardant Reveal is a minimal residual disease (MRD) panel for use in recurrence detection of early-stage solid tumors.
Treatment groups
12
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Distant Recurrence Free Interval (D-RFi)
The primary endpoint, distant recurrence-free interval (D-RFi), will be evaluated for each of the primary study cohorts. D-RFi is defined as the time from the end of primary treatment until the time of diagnosis of a distant recurrence of the Index Cancer. Subjects without a distant recurrence will be censored at the time of last follow-up of their Index Cancer.
Secondary outcomes
Sensitivity
Sensitivity defined as the proportion of participants who develop distant recurrence who have ctDNA detected at or before the time of clinical detection of recurrence.
Positive Predictive Value
Positive predictive value (PPV) defined as the proportion of participants who have ctDNA detected at the landmark or any surveillance timepoint who recur (either distally or locally).
Lead Time
Lead time defined as the interval between ctDNA detection and clinical detection of recurrence.
Specificity
Specificity defined as the proportion of participants who are recurrence-free who have ctDNA not detected.
Other outcomes
Recurrence-free interval (RFi)
Recurrence-free interval (RFi) defined as the time from the end of primary treatment until the appearance/occurrence of any recurrence (distant, regional, and/or local) of the Index Cancer. Subjects without recurrence will be censored at the time of last follow-up of their Index Cancer.
Association with resolution of indeterminate findings
1. The proportion of individuals whose indeterminate finding is ultimately confirmed to be disease recurrence who have ctDNA detected at the initial time the indeterminate finding is identified and 2. The proportion of ctDNA not detected participants whose indeterminate findings is ultimately confirmed to be benign.
Sensitivity for local recurrence
Sensitivity for local recurrence defined as the proportion of participants who have localized recurrence (e.g., in the absence of distant metastasis) who have ctDNA detected at or before the time of clinical detection of a localized recurrence; using landmark and serial timepoints.
Index Cancer-Specific Survival (ICSS)
Index Cancer-Specific Survival (ICSS) defined as the time from the date of diagnosis until the date of death from the subject's Index Cancer. Subjects who are still alive at the end of the study observation period will be censored at the time of last known vital status.
Sponsors and contacts
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