Clinical Trial Details
— Status: Recruiting
Administrative data
NCT number |
NCT04423679 |
Other study ID # |
NCR191015 |
Secondary ID |
|
Status |
Recruiting |
Phase |
|
First received |
|
Last updated |
|
Start date |
August 15, 2020 |
Est. completion date |
August 2025 |
Study information
Verified date |
October 2023 |
Source |
George Washington University |
Contact |
Nicole Chappell, MD |
Phone |
202 741 2434 |
Email |
nChappell[@]mfa.gwu.edu |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
Cervical cancer is primarily caused by Human Papillomaviruses (HPV). Testing for HPV in
cervical samples is now an option for cervical cancer screening. HPV can also be tested from
self-collected samples which may help to improve access to screening, since it does not
require a doctor visit. However, many women will test positive for HPV who are not at high
risk for cervical cancer. Therefore, additional ("triage") tests are needed to determine
which women testing HPV-positive require additional clinical workup. For self sampling, a
triage test that could be measured from the same initial sample without requiring a follow-up
visit to the doctor would be an ideal strategy. The purpose of this study is to determine
whether a new HPV test that measures changes in HPV DNA can be used to triage HPV-positive
women using self collected samples. This study will enroll 1,000 women who are undergoing
cervical cancer screening at the George Washington University. Women will be asked to take a
self-collected sample prior to their clinic visit. The investigators will evaluate the
clinical accuracy of the new HPV triage test in self-collected samples and compare the
accuracy of the test in samples collected by the clinician.
Description:
Worldwide, cervical cancer remains the fourth most common cancer and fourth leading cause of
cancer deaths among women, with the greatest burden occurring in low-resource settings that
lack effective screening and treatment. Even in the United States (U.S.), where Pap cytology
screening has resulted in dramatic declines in cervical cancer incidence and mortality,
thousands of new cases and related-deaths still occur every year, most commonly among
underserved women who face barriers to accessing screening and/or treatment. The recent
implementation of human papillomavirus (HPV) DNA testing as a primary strategy for cervical
cancer screening has the potential to alleviate these disparities by improving the
sensitivity for cervical precancer detection compared to Pap cytology, while providing
greater long term reassurance following a negative HPV test. Moreover, HPV testing can be
successfully performed on self-collected specimens, offering the possibility of expanding
access to cervical cancer screening among hard-to-reach, underserved women.
Despite the many advantages of primary HPV screening, the current challenge is optimizing
triage testing to determine who among the many women testing HPV positive are at high-risk
and require immediate colposcopy referral or treatment, while avoiding unnecessary harms
among women at low-risk. A molecular triage test that can be conducted from the same primary
screening sample (i.e., reflex testing) is particularly attractive for both high-and
low-resource settings, particularly if it works from self-collected samples. Previously, DNA
methylation of candidate host cell genes has been evaluated in self-collected samples and
achieved acceptable performance for triage of HPV-positive women. In studies using clinician
collected samples, there is a suggestion that methylation of carcinogenic HPV genotypes has
better clinical performance (higher sensitivity/specificity) compared to host gene
methylation; however, HPV methylation has not been evaluated in self-collected specimens.
Because HPV DNA is present in only a small subset of infected cells in the lower genital
tract, particularly in cervical precancers, it is likely that the signal-to noise ratio in
self-collected samples is better for HPV compared to host gene methylation, resulting in
improved specificity for cervical precancer detection. Evaluating the feasibility of HPV DNA
methylation testing from self-collected samples is essential for determining the extent to
which this assay can address the critical need for HPV triage in high- and low resource
settings. In collaboration with the Cancer Genome Research Laboratory, a high-throughput,
low-cost next-generation bisulfite sequencing assay that detects methylation of the 12 most
carcinogenic HPV genotypes has been developed. Further, this assay includes a panel of host
genes, including those that have been previously evaluated in self-collected specimens. The
proposal is to test this assay in paired self and clinician-collected samples from 1,000
women enrolled in an ongoing prospective study of women undergoing cervical cancer screening
and colposcopy at the George Washington University (GWU). The hypothesis is that HPV and host
DNA methylation will show non-inferior sensitivity and specificity for detection of cervical
precancer in self-collected compared to clinician-collected samples and that HPV methylation
will have higher absolute specificity compared to host methylation in both sample types.