Further analyses are needed to evaluate the CRC screening utility and clinical relevance of a blood test based on the detection of tumor-derived DNA.
All the mentioned limitations are inherent to in vitro studies, and also highlight the screening utility of proteomic approaches.
The observed low sensitivity of A1C ≥6.5% to diagnose type 2 diabetes adds to the debate about its screening utility.
Biomarker testing in such samples is likely to improve validity and confidence in identifying markers with screening utility in the absence of clinical stage confounders (Pepe et al, 2008; Buchen, 2011).
It is not yet known whether HPV antibody signatures will have screening utility and/or have prognostic or biologic correlates for clinical outcome, monitoring therapy, or identifying early recurrence.
These studies will be useful in providing evidence for policies relating to the use of HPV DNA tests for screening, utility and coverage of current HPV vaccines and allocation of resources for HPV infections and cervical cancer prevention and treatment.
However, no serum tumour markers have approved screening utility for CRC (Locker et al, 2006; Duffy et al, 2014), and although a recently evaluated plasma septin 9 (SEPT9) DNA methylation test (Epi proColon) holds some promise (Church et al, 2013; Johnson et al, 2014), increased uptake (vs faecal testing) in non-compliant populations needs to be demonstrated.
A few years ago, for example, a screen recording utility called xRec also slipped into the App Store only to be pulled shortly thereafter.
Its washed-out-gray hulk is seen from across a tar-covered roof, through a screen of utility poles.
The long red arrow on the dial projected on a screen in the utility company's command center in Manhattan hovered at the threshold of uncharted territory — 13,141 megawatts consumed at one time — for most of the afternoon.
