Perception about benefits and risks related to combined hormonal contraceptives use in women with Lynch syndrome.

Objective: Lynch syndrome (LS) is a hereditary condition associated with an increased risk of colorectal and endometrial cancer. This study aimed to assess the knowledge, attitudes, and beliefs of women with LS regarding combined hormonal contraceptive (CHC) use compared to a control group of healthy women.

Methods: Pre-menopausal women with LS ( = 43) and an age-matched control group of healthy women ( = 128) participated in this prospective, cross-sectional study (NCT05909410). Participants completed an electronic questionnaire evaluating perceptions of CHC use and its impact on various cancers, medical conditions, and symptoms. Statistical analysis compared responses between the two groups, with reported -values.

Results: Women with LS were less likely to use CHCs compared to the control group ( = 0.03) and had a more negative perception of CHCs' impact on colorectal cancer ( = 0.023) and endometrial cancer ( = 0.028). Limited knowledge was observed in both groups regarding the protective effects of CHCs against colorectal and ovarian cancer. Perceptions of CHC use and its impact on symptoms and chronic diseases did not significantly differ between the groups ( > 0.05). CHC use was not associated with greater awareness of the protective effect against colorectal ( = 0.89) and endometrial cancer ( = 0.47), but it was associated with a desire for contraception (OR 21.25; 95% CI 1.16 to 388.21;  = 0.039).

Conclusion: This study highlights contrasting perceptions of CHCs and their implications in oncology between women with LS and healthy women. Tailored counselling and support strategies are crucial for empowering women with LS to make informed decisions about their gynaecologic health.