Lifestyle Factors and Breast Cancer in Females with PTEN Hamartoma Tumor Syndrome (PHTS)

Linda A.J. Hendricks, Katja C.J. Verbeek, Janneke H.M. Schuurs-Hoeijmakers, Arjen R. Mensenkamp, Hilde Brems, Robin de Putter, Violetta C. Anastasiadou, Marie Charlotte Villy, Arne Jahn, Verena Steinke-Lange, Margherita Baldassarri, Arvids Irmejs, Mirjam M. de Jong, Thera P. Links, Edward M. Leter, Daniëlle G.M. Bosch, Hildegunn Høberg-Vetti, Marianne Tveit Haavind, Kjersti Jørgensen, Lovise MæhleAna Blatnik, Joan Brunet, Esther Darder, Emma Tham, Nicoline Hoogerbrugge, Janet R. Vos (Corresponding Author)

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    Abstract

    Females with PTEN Hamartoma Tumor Syndrome (PHTS) have breast cancer risks up to 76%. This study assessed associations between breast cancer and lifestyle in European female adult PHTS patients. Data were collected via patient questionnaires (July 2020–March 2023) and genetic diagnoses from medical files. Associations between lifestyle and breast cancer were calculated using logistic regression corrected for age. Index patients with breast cancer before PHTS diagnosis (breast cancer index) were excluded for ascertainment bias correction. In total, 125 patients were included who completed the questionnaire at a mean age of 44 years (SD = 13). This included 21 breast cancer indexes (17%) and 39 females who developed breast cancer at 43 years (SD = 9). Breast cancer patients performed about 1.1 times less often 0–1 times/week physical activity than ≥2 times (ORtotal-adj = 0.9 (95%CI 0.3–2.6); consumed daily about 1.2–1.8 times more often ≥1 than 0–1 glasses of alcohol (ORtotal-adj = 1.2 (95%CI 0.4–4.0); ORnon-breastcancer-index-adj = 1.8 (95%CI 0.4–6.9); were about 1.04–1.3 times more often smokers than non-smokers (ORtotal-adj = 1.04 (95%CI 0.4–2.8); ORnon-breastcancer-index-adj = 1.3 (95%CI 0.4–4.2)); and overweight or obesity (72%) was about 1.02–1.3 times less common (ORtotal-adj = 0.98 (95%CI 0.4–2.6); ORnon-breastcancer-index-adj = 0.8 (95%CI 0.3–2.7)). Similar associations between lifestyle and breast cancer are suggested for PHTS and the general population. Despite not being statistically significant, results are clinically relevant and suggest that awareness of the effects of lifestyle on patients’ breast cancer risk is important.

    Original languageEnglish
    Article number953
    Pages (from-to)1-10
    Number of pages10
    JournalCancers
    Volume16
    Issue number5
    DOIs
    Publication statusPublished - Mar 2024

    Keywords*

    • alcohol drinking
    • body mass index
    • breast neoplasm
    • exercise
    • hamartoma syndrome
    • multiple

    Field of Science*

    • 3.2 Clinical medicine

    Publication Type*

    • 1.1. Scientific article indexed in Web of Science and/or Scopus database

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