Ovarian Cancer Screening and AI

NCT07503054 — Not applicable, Completed, 300 participants, Charite University, Berlin, Germany

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AI on Ovarian Cancer Screening Attitudes in Gynecologists

RegistryNCT07503054, acronym AI-OCS-Gyn
StatusCompleted
PhaseNot applicable
Study typeInterventional; randomized, parallel, masking: single, screening
Enrollment300 (Actual)
SponsorCharite University, Berlin, Germany (Other); collaborators: Max Planck Institute for Human Development, German Research Foundation
ConditionsOvarian Cancer Screening Recommendations by Gynecologists
InterventionsChatGPT - Control, ChatGPT - Evidence-Based Screening Discussion (Behavioral)
Datesstart 2026-03-27, primary completion 2026-09-15, completion 2026-09-15, first posted 2026-03-31, last updated 2026-10-20
Locations1 site in Germany

Related Papers Related Patents Related Grants Related Experts
All trials for Ovarian Cancer Screening Recommendations by Gynecologists All trials of ChatGPT - Control All trials of ChatGPT - Evidence-Based Screening Discussion

-Summary

Gynecologists frequently overestimate the benefits and safety of ovarian cancer screening. AI-supported discussions may help correct these misperceptions. This study tests whether an AI-guided conversation about the evidence on ovarian cancer screening can improve gynecologists' knowledge and reduce non-evidence-based screening recommendations, compared with a control AI discussion on ovarian cancer prevalence.

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+Detailed description

Previous research has demonstrated that gynecologists often substantially overestimate both the effectiveness and safety of ovarian cancer screening, despite robust evidence indicating that such screening does not offer a net clinical benefit. These findings highlight the need for innovative communication strategies to support evidence-based clinical practice and reduce low value care.

AI-based conversational interventions have shown promising results in other fields when aiming to correct misconceptions or encourage engagement with evidence, particularly among individuals who are initially resistant to factual information. Leveraging these insights, this study investigates whether AI-facilitated discussions can effectively improve gynecologists' knowledge of the benefit-harm profile of ovarian cancer screening and subsequently reduce non-evidence-based recommendations.

The study employs a cross-sectional study design in which gynecologists who have previously indicated to regularly recommend ovarian cancer screening with transvaginal ultrasound and potentially with additional CA 125-testing to their asymptomatic, average-risk patients are randomized to one of two conditions:

1. Intervention Condition: Participants engage in an AI-guided conversation in which they explain their reasons for recommending ovarian cancer screening. The AI is instructed to address misconceptions and clarify the lack of evidence supporting a positive benefit-harm ratio.
2. Control Condition: Participants engage in an AI discussion on the prevalence of ovarian cancer, without receiving information or corrective feedback related to screening outcomes.

Before and after the AI-based discussion, all participants are queried on their numerical (X out of 1,000 women) and subjective perception of ovarian cancer screening's benefits and harms and their screening recommendations. Measures are derived from instruments used in prior research.

The primary objective of this study is to assess the change, from before to after the AI-based conversation, in clinicians' understanding of the benefit-harm ratio and their recommendations regarding routine ovarian cancer screening for asymptomatic, average-risk women, within and between study groups.

+Arms and interventions

ArmTypeInterventionsDescription
Control (ChatGPT Control Condition)OtherBehavioral: ChatGPT - ControlParticipants in this arm engage in a three-turn conversation with ChatGPT. The AI's role is to: * Discuss the participant's perception of how dangerous ovarian cancer is. * Provide factual information on prevalence, lifetime risk, mortality rates, and general epidemiology. * Avoid any mention of screening tests, guideline recommendations, or screening benefits/harms. * Keep responses concise (5-8 sentences per turn). * Begin by reacting to the participant's opening question: "In your mind, how dangerous is ovarian cancer?"
Experimental (ChatGPT Evidence-Based Screening Discussion)ExperimentalBehavioral: ChatGPT - Evidence-Based Screening DiscussionParticipants in this arm engage in a three-turn conversation with ChatGPT. The AI's role is to: * Ask participants to elaborate on their reasons for recommending ovarian cancer screening. * Provide clear, evidence-based information about benefits and harms of ovarian cancer screening in average-risk women. * Refer to key findings from large trials (e.g., PLCO, UKCTOCS) with absolute numbers (false-positive rates, unnecessary surgeries, complication rates, lack of mortality benefit). * Summarize positions of major U.S. guidelines (e.g., USPSTF, ACOG), including recommendation against routine screening in asymptomatic, average-risk women. * Evaluate the evidence and state whether routine screening is supported based on current data. * Maintain a respectful, non-judgmental tone; critique evidence, not the participant. * Keep responses concise (5-8 sentences per turn). * Begin by responding to the participant's opening question: "Why do you recommend ovarian cancer screening?"
  • ChatGPT - Control (Behavioral): Three-turn conversation; discusses ovarian cancer risk and epidemiology; avoids screening topics; concise responses (5-8 sentences). Mode of Delivery: Online chat interface; participant interacts directly with ChatGPT.
  • ChatGPT - Evidence-Based Screening Discussion (Behavioral): Three-turn conversation; asks participants about screening rationale; provides evidence-based info on benefits/harms, trial data, guideline positions; concise responses (5-8 sentences). Mode of Delivery: Online chat interface; participant interacts directly with ChatGPT.

+Outcome measures

Primary outcomes

  • Change in intention to recommend ovarian cancer screening [Immediately post intervention]: Difference in participants' self-reported frequency of recommending ovarian cancer screening to average-risk women in the future after the ChatGPT interaction and their self-reported frequency of recommending the screening in the past.

Secondary outcomes

  • Change in benefit-harm ratio evaluation of ovarian cancer screenings [Immediately post intervention]: Difference between the self-reported benefit-harm ratio evaluation before and after the ChatGPT interaction.
  • Accuracy of knowledge regarding ovarian cancer screening evidence [Immediately post intervention]: Participants' understanding of benefits, harms, and guideline recommendations for ovarian cancer screening, assessed via survey questions

+Eligibility

Sex: All, ages: 24 Years to any

Inclusion Criteria:

* gynecologists in outpatient care who provide ovarian cancer screening to asymptomatic, average-risk women (not guideline consistent)

Exclusion Criteria:

* gynecologists in inpatient care
* gynecologist in outpatient care who do NOT provide ovarian cancer screening to asymptomatic, average-risk women (guideline consistent)

+Locations (1)

FacilityCityCountryStatus
Charité - Universitätsmedizin BerlinMitte, State of BerlinGermany

+Publications

  • Wegwarth O, Gigerenzer G. US gynecologists' estimates and beliefs regarding ovarian cancer screening's effectiveness 5 years after release of the PLCO evidence. Sci Rep. 2018 Nov 21;8(1):17181. doi: 10.1038/s41598-018-35585-z. PMID 30464251
  • Wegwarth O, Pashayan N. When evidence says no: gynaecologists' reasons for (not) recommending ineffective ovarian cancer screening. BMJ Qual Saf. 2020 Jun;29(6):521-524. doi: 10.1136/bmjqs-2019-009854. Epub 2019 Nov 8. No abstract available. PMID 31704891
  • US Preventive Services Task Force; Grossman DC, Curry SJ, Owens DK, Barry MJ, Davidson KW, Doubeni CA, Epling JW Jr, Kemper AR, Krist AH, Kurth AE, Landefeld CS, Mangione CM, Phipps MG, Silverstein M, Simon MA, Tseng CW. Screening for Ovarian Cancer: US Preventive Services Task Force Recommendation Statement. JAMA. 2018 Feb 13;319(6):588-594. doi: 10.1001/jama.2017.21926. PMID 29450531