Objectives: We evaluated agreement between human papillomavirus (HPV) tests performed on self-collected vaginal and clinician-collected cervical specimens to advance HPV self-collection as a cervical cancer screening option in our health care system. Methods: This diagnostic accuracy study was conducted at an academic medical center. Participants were 25–65 years old with upcoming colposcopy appointments. One cohort (n = 79) self-collected a vaginal specimen in the clinic immediately before a clinician-collected cervical specimen. The second cohort (n = 115) self-collected a vaginal specimen at home, mailed it in, and had a clinician-collected cervical specimen in the clinic. Paired specimens were evaluated for total (TPA), positive (PPA), and negative (NPA) percentage agreement. Extreme temperature stability studies were also conducted. Results: Compared with clinician-collected cervical specimens, in-clinic self-collected vaginal specimens showed a TPA, PPA, and NPA of 98%, 100%, and 97% for HPV16; 99%, 100%, and 99% for HPV18; 86%, 94%, and 79% for high-risk other (HRO) HPV. The TPA, PPA, and NPA for at-home self-collected vaginal specimens compared with clinician-collected cervical specimens were 94%, 79%, and 96% for HPV16; 95%, 43%, and 98% for HPV18; 89%, 80%, and 93% for HRO. Vaginal specimens showed prolonged stability and were unaffected by extreme temperatures. Conclusions: In general, in-clinic and at-home self-collected vaginal HPV specimens for HPV screening demonstrate high agreement with clinician-collected cervical specimens, with the exception of low PPA in the at-home self-collected vaginal HPV18 subgroup. Our findings support the use of HPV self-collection as a practical option to expand access to cervical cancer screening.
Strengthening Health Research to Advance Equitable, Patient-Centered Care
Abstract Background: The Alaska Tribal Health System is working to increase colorectal cancer (CRC) screening among Alaska Native peoples. It is unknown why people who initially agree to screening might not follow through to complete their screening. Methods: As part of a larger intervention investigating multi-target stool DNA (mt-sDNA) test use in rural Alaska communities, we interviewed Alaska Native people who had agreed to scheduling a colonoscopy or having a mt-sDNA kit sent to their home but who did not complete their selected test. Results: Of 531 Alaska Native people who initially agreed but did not complete screening, 299 (56%) were able to be contacted for a follow-up survey. Of those, 256 (86%) answered the survey; 187/224 (83%) who had chosen mt-sDNA, and 69/75 (93%) who had chosen colonoscopy. Reported reasons for non-completion of stool DNA test kits included being busy or forgetting, being uncomfortable doing a stool test, and not knowing how to do the test or concerns over how to return the kit for processing. Reasons for non-completion of colonoscopy included scheduling issues, physical health issues, travel, and housing barriers, as well as cost, fear, and being too busy. Of note, many respondents in both groups indicated they would still be interested in CRC screening in the future or were currently pursuing screening. Conclusions: This was the first exploration of reasons for non-adherence to CRC screening after initial test request by Alaska Native people. Many of the identified themes are amenable to health care system changes for future interventions to improve screening outreach and uptake. Citation Format: Diana Redwood, Christie A. Flanagan, Lauren Jeffries, Melissa Toffolon, Joseph Klejka, Lila J. Finney Rutten, Judith S. Kaur, John B. Kisiel. Non-completion of colorectal cancer screening among Alaska Native people in an intervention trial [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2026; Part 1 (Regular Abstracts); 2026 Apr 17-22; San Diego, CA. Philadelphia (PA): AACR; Cancer Res 2026;86(7 Suppl):Abstract nr 2474.
Trial-Based Costs for Interventions to Improve HPV Vaccine Uptake
This economic evaluation estimates the implementation costs and cost per additional patient receiving the vaccine associated with each of the intervention strategies for increasing rates of human papillomavirus (HPV) vaccination in primary care practices.
Patient and physician preferences among colorectal cancer screening tests: updated predictions from a discrete choice experiment
Abstract A148: Increase in colorectal cancer screening among rural and remote Alaska Native peoples using the multi-target stool DNA: A randomized controlled trial
Abstract Background: Alaska Native people are committed to increasing colorectal cancer (CRC) screening to reduce the high rate of CRC in this population. We conducted a community-level cluster randomized controlled trial (RCT) to evaluate the impact of multi-target stool DNA test introduction (mt-sDNA; Cologuard® Exact Sciences, Madison WI) on CRC screening in southwest Alaska Native communities using a mt-sDNA pre-processing lab in Anchorage, Alaska. Methods: A total of 32 rural/remote Alaska Native communities were evenly randomized to either high intensity patient navigation or medium intensity mailed health education compared to 14 communities receiving standard of care (screening recommendations at health care visits). The intervention was conducted from April 2021-February 2023. Outcome measures included CRC screening completion within 12 months and method used (mt-sDNA vs colonoscopy). Results: A total of 2032 Alaska Native participants (mean [SD] age, 56 [8.4] years; 817 women [40%]) were enrolled: 587 participants randomized to usual care, 696 participants randomized to the mailed education arm, and 749 participants randomized to the patient navigation arm. The mt-sDNA test was significantly preferred over colonoscopy by both mailed education participants (68%) and patient navigation participants (71%) (p<0.01). Mt-sDNA was somewhat more preferred by older participants ages 65-75 (79%) vs younger participants ages 45-54 (64%). Both men (71%) and women (68%) significantly preferred mt-sDNA compared with colonoscopy (p<0.01). Overall, 38% of those in the patient navigation intervention completed screening compared with 33% in the mailed education intervention and 10% in the usual care arm. No significant differences were observed in mt-sDNA completion between the patient navigation arm (154 participants [40%]) and the mailed education arm (100 participants [36%]) (p= 0.34). Colonoscopy completion (not including follow-up colonoscopies after abnormal stool tests) was higher in both the patient navigation arm (112 participants [44%]) and the mailed education arm (87 participants [43%]) compared with usual care (38 participants [14%]). Over 61% of kits sent to participants were completed and returned, however, 38% of the kits were not able to be processed, primarily because of mail transit time exceeding the manufacturer’s collection-to-processing limitation of 72 hrs. Conclusions: In this RCT among Alaska Native peoples who were not up to date with CRC screening recommendations, both a mailed education intervention and a patient navigator facilitated intervention were effective at increasing CRC screening compared with usual care. Participants overwhelmingly preferred mt-sDNA for screening but limitations in getting samples to the lab in time for analysis meant that about one-third of mt-sDNA samples were unable to be processed. These findings show that screening outreach and mt-sDNA use can substantially increase CRC screening, but shipping and weather issues remain to be addressed for expanding use of mt-sDNA in rural/remote Alaskan communities. Citation Format: Diana Redwood, Christie Flanagan, Lauren Jeffries, Peter Holck, Danika Bailie, Christine Desnoyers, Joseph Klejka, Lila Rutten, John Kisiel. Increase in colorectal cancer screening among rural and remote Alaska Native peoples using the multi-target stool DNA: A randomized controlled trial [abstract]. In: Proceedings of the 18th AACR Conference on the Science of Cancer Health Disparities; 2025 Sep 18-21; Baltimore, MD. Philadelphia (PA): AACR; Cancer Epidemiol Biomarkers Prev 2025;34(9 Suppl):Abstract nr A148.
A Mixed-Method Case Study to Evaluate Adoption of Clinical Decision Support for Cancer Symptom Management
AbstractElectronic patient-reported outcome measures (ePROMs) can improve care for people with cancer, but effectiveness hinges on well-supported integration in clinical settings.We evaluated clinician use of specific clinical decision support (CDS) tools in the electronic health record (EHR) designed to facilitate timely, clinically appropriate responses to ePROM scores for six symptoms commonly experienced by cancer patients.The parent pragmatic trial, which took place at Mayo Clinic (Rochester, Minnesota, United States) and its affiliated community health care system between March 2019 and January 2023, evaluated the population-level effectiveness and implementation of an ePROM surveillance and EHR-facilitated collaborative care symptom management intervention. The present evaluation used a case study approach with four data sources: (1) clinician interactions with CDS tools abstracted from the EHR; (2) clinician notes identified with an institution-specific textual search tool; (3) qualitative interviews and group discussions with care teams; and (4) administrative records reviewed to identify training and outreach to care teams.EHR metrics showed very low adoption of CDS tools including alerts and symptom-specific order sets, despite educational outreach and information technology support provided to clinical care teams. Qualitative findings revealed that CDS use was not easy to integrate into busy clinical workflows and highlighted clinician perceptions that the collaborative care intervention provided additional patient support that reduced clinicians' need to utilize CDS tools. They also highlight the importance of contextual factors, including institutional priorities and EHR changes.This pragmatic clinical trial case study found limited adoption of EHR CDS tools that had been developed to increase clinicians' awareness of and responses to ePROM data. Findings suggest the need to align clinician and organizational implementation strategies, simplify CDS tools to fit practice expectations, and identify and address contextual factors that could undercut strategies like education and peer support. This may be especially important for teams who aim to iteratively evaluate and refine CDS and implementation strategies for multicomponent interventions or introduce new strategies that are responsive to barriers while maintaining scalability.
Multilevel Intervention and Human Papillomavirus Vaccination Disparities
ImportanceUptake of human papillomavirus (HPV) vaccination varies by characteristics, exposing some children to higher HPV cancer risks than others.ObjectiveTo examine whether the effectiveness of a multilevel intervention on HPV vaccination differed by race and ethnicity, rurality, and Area Deprivation Index (ADI) in children ages 11 to 12 years.Design, Setting, and ParticipantsA stepped-wedge cluster randomized trial was conducted from April 2018 to August 2022 among children at 6 Mayo Clinic primary care practices in Minnesota to improve HPV vaccination. This secondary analysis was performed from March to June 2024.InterventionA multilevel intervention that included parent reminder/recall letters, which alerted parents of children due or past due for vaccination, and health care professional audit/feedback reports, which alerted health care professionals of their own vaccination rates.Main Outcome and MeasureVaccine initiation (first dose of the 2-dose HPV vaccine) and vaccine completion (second dose) were the primary study outcomes. In this secondary analysis, the effect of the intervention on HPV vaccine initiation and completion by race and ethnicity, rurality, and ADI quartiles (Qs) was assessed.ResultsA total of 6232 children aged 11 to 12 years (3285 [52.7%] male; 3481 [55.9%] aged 11 years and 2751 [44.1%] aged 12 years) were included in the analysis. Of the study participants, 304 (4.9%) were Asian, 561 (9.0%) Black, 146 (2.3%) Hispanic, 4501 (72.2%) White, and 720 (11.6%) other, including American Indian or Alaskan Native, Native Hawaiian or Pacific Islander, Other Pacific Islander, Samoan, unable to provide, unknown, chose not to disclose, or other unspecified. A total of 5434 participants (87.2%) were urban residents, and 2794 (44.8%) resided in ADI Q2 areas. With usual care, HPV vaccine initiation and completion rates were significantly lower with each increasing ADI quartile (initiation: Cochran-Armitage test for trend [SE], −0.02 [0.01]; P &lt; .001; completion: Cochran-Armitage test for trend [SE], −0.05 [0.01]; P &lt; .001) but did not differ by children’s race and ethnicity or rurality. With the intervention, vaccine initiation increased significantly for most children (range of rates, 9.2% [95% CI, 5.2%-13.3%] to 24.0% [95% CI, 7.5%-40.6%]) except those with Black race, in rural settings, and in ADI Q4 (highest area deprivation); vaccine completion increased significantly for most children (range of rates, 19.4% [95% CI, 5.5%-33.3%] to 31.2% [95% CI, 12.1%-50.3%]) except for those in ADI Q4.Conclusions and RelevanceIn this secondary analysis of a cluster randomized trial, a multilevel intervention was associated with increased HPV vaccination for most children but had limited effect for those residing in areas of highest deprivation. Future research should explore other intervention strategies that would effectively promote HPV vaccination among families in socioeconomically disadvantaged areas to reduce HPV vaccination disparities.Trial RegistrationClinicalTrials.gov Identifier: NCT03501992
Abstract 7354: Patient reported outcome validation within the Voyage Study cohort
Abstract Background: Epidemiologic studies commonly obtain important exposure and outcome information from patient self-report although these may be influenced by imperfect understanding and/or faulty recall. The Voyage Study is a large-scale, prospective cohort study of long-term health outcomes among participants with a valid multi-target stool DNA (mt-sDNA) test order (N=150, 047). The purpose of this analysis was to evaluate the validity of participant reported mt-sDNA tests, colorectal cancer (CRC), and/or aerodigestive cancers (ADC, including cancers of the head, neck, oral, esophageal, lung, liver, stomach, pancreas, anus) among respondents. Methods: Participants from across the Unites States enrolled in the study completing questionnaires at enrollment and 1 year. The year 1 questionnaire collected data on completion and outcome of their mt-sDNA test, follow up colonoscopies and other procedures as well as a diagnosis of CRC or ADC. The study team contacts those who reported either CRC or ADC for permission to obtain copies of medical records. Records are then reviewed by a trained nurse abstractor and evaluated for validity. Mt-sDNA test results were available from Exact Sciences. Results: At the time of this analysis, year 1 questionnaire data were available on 135, 035 participants. Abnormal mt-sDNA results (n=12, 928) were self-reported by 13, 420 participants with 96.3% accuracy. Of the 111, 556 self-reported normal results, 93.4% (n=104, 150) were reported correctly. The validation process for the Voyage Study is ongoing with 860 self-reported CRC and 318 self-reported aerodigestive cancer diagnoses to date. Complete data are available on 155 individuals with a self-report of a new CRC diagnosis and 63 individuals with a self-report of aerodigestive cancer. Abstraction confirmed 47% (n=73) of those reported as true CRC diagnoses. Participants were better at correctly reporting at least one aerodigestive cancer (73%, n=46). Discussion and Conclusions: Patient reported medical record validation poses a unique challenge in today’s world. The process of requesting participant authorization followed by institutional requests to release the medical records to the research team is slow and painstaking. We found that patients are able to correctly report their mt-sDNA tests but found a relatively low proportion of reported cancer diagnoses reported correctly. This underscores the need to continue to validate key outcomes rather than relying solely on participant responses. As the number of outcomes validated increases, the study team will look at a variety of social and economic factors to better understand what contributes to or hinders an accurate self-report. Citation Format: Emily J. Kirsch, Jessica A. Grimm, Shawn M. Stoddard, Winnie Z. Fan, Kandace A. Bohn, Kathleen J. Yost, Lila J. Finney Rutten, Janet E. Olson. Patient reported outcome validation within the Voyage Study cohort [abstract]. In: Proceedings of the American Association for Cancer Research Annual Meeting 2025; Part 1 (Regular Abstracts); 2025 Apr 25-30; Chicago, IL. Philadelphia (PA): AACR; Cancer Res 2025;85(8_Suppl_1):Abstract nr 7354.
Factors Influencing the Choice Between Multi-Target Stool DNA and Colonoscopy for Colorectal Cancer Screening Among Alaska Native Peoples
The Alaska Tribal Health System is increasing colorectal cancer (CRC) screening among Alaska Native (AN) peoples, who experience the highest CRC rate in the world. Through a clinical trial (NCT04336397), AN people living in rural/remote Alaska were offered either the previously unavailable multi-target stool DNA test (mt-sDNA; Cologuard®) or colonoscopy. From April 2022 to August 2024, 113 (59%) people who completed mt-sDNA testing and 51 (39%) who completed a colonoscopy procedure participated in a survey on factors influencing their screening test choice. The majority of mt-sDNA participants (79%) were aware of the colonoscopy option, while most colonoscopy participants (72%) reported being unaware of the mt-sDNA option. Key mt-sDNA preference themes included not having to travel, less time commitment, childcare and work responsibilities, physical limitations, greater convenience, and the test being less invasive and dangerous than a colonoscopy. In contrast, colonoscopy preference themes included wanting to adhere to screening recommendations, be proactive about preventative health, family history of cancer, awareness of the higher CRC risk among AN peoples, as well as the belief that colonoscopy is more reliable and accurate since it is performed by medical providers. These findings underscore the complex factors influencing CRC screening preferences among rural and remote AN people. Limited access to medical facilities, financial burdens, and personal commitments, along with personal factors, have a substantial bearing on the screening decision-making process. Recognizing and addressing these multifaceted influences can help CRC screening programs better meet community member needs and preferences, ultimately improving screening rates and colorectal health outcomes.