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Genetic Assessment of Breast Cancer Risk in Women in the DORA Programme

27. juli 2026 opdateret af: Institute of Oncology Ljubljana

Impact of Genetic Assessment on the Evaluation of Individual Breast Cancer Risk Among Women at Increased Risk in the DORA Programme

This prospective study evaluates whether a more detailed clinical and genetic assessment can improve the classification of individual breast cancer risk among women previously identified as having moderately increased or high breast cancer risk in the Slovenian DORA breast cancer screening programme.

Women who agree to participate complete questionnaires and attend an individual genetic counseling appointment at the Institute of Oncology Ljubljana. Personal breast cancer risk factors are reviewed with the assistance of a specialist, and reported family cancer history is verified using data from the Slovenian Cancer Registry. Breast cancer risk is reassessed using the S-IBIS and CanRisk models. Genetic testing is offered to participants who meet the applicable clinical criteria.

The study will evaluate changes in breast cancer risk classification, compare risk estimates obtained using the S-IBIS and CanRisk models, and provide participants with individualized recommendations for breast cancer screening and follow-up according to their reassessed risk.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

This study is a continuation of a previous study conducted within the Slovenian DORA breast cancer screening programme. The previous study included women who turned 50 years of age in 2021, were invited for their first screening mammography in the DORA programme, completed a breast cancer risk questionnaire, and provided informed consent.

In the previous study, breast cancer risk was initially estimated using the S-IBIS model on the basis of questionnaire data and mammographic information. A total of 291 women were identified as having moderately increased or high breast cancer risk. Because the initial assessment was based mainly on self-reported information and did not include expert-assisted verification of all risk factors and family cancer history, these women are invited to participate in a more detailed risk assessment.

Participants who provide consent complete additional questionnaires and attend an individual consultation at the Department of Clinical Cancer Genetics of the Institute of Oncology Ljubljana. During the consultation, personal breast cancer risk factors and family cancer history are reviewed with a specialist. Reported cancer diagnoses in family members are verified, where possible, using the Slovenian Cancer Registry. Information collected includes personal characteristics, breast cancer risk factors, family history of cancer, breast tissue density, and genetic test results when genetic testing is performed.

Individual breast cancer risk is reassessed using the S-IBIS and CanRisk models. Genetic testing is offered when the participant meets the criteria defined in the applicable clinical guidelines. Following completion of the assessment, each participant receives recommendations for further breast cancer screening and follow-up according to her reassessed level of risk.

The study hypothesis is that more than half of the women initially classified as having increased breast cancer risk will be reclassified as having population-level risk after the detailed reassessment. The primary objective is to provide women who remain at moderately increased or high risk with more appropriate risk-adapted screening and follow-up. The secondary objective is to evaluate agreement between breast cancer risk estimates obtained using the S-IBIS and CanRisk models.

The study includes women previously classified as having moderately increased or high breast cancer risk. Women with a diagnosis of breast cancer are excluded. Data will be analyzed using descriptive statistical methods and will be processed in a pseudonymized form.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

291

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiekontakt

  • Navn: Clinical Cancer Genetics Clinic
  • Telefonnummer: +386 1 587 9649
  • E-mail: genetika@onko-i.si

Studiesteder

      • Ljubljana, Slovenien, 1000
        • Rekruttering
        • Institute of Oncology Ljubljana
        • Kontakt:

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen

Tager imod sunde frivillige

Ingen

Beskrivelse

Inclusion Criteria:

- Women who participated in the previous DORA study and were classified by the S-IBIS model as having moderately increased or high breast cancer risk.

Exclusion Criteria:

  • Diagnosis of breast cancer.

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Screening
  • Tildeling: N/A
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Comprehensive Breast Cancer Risk Assessment
Participants undergo a comprehensive reassessment of individual breast cancer risk. The assessment includes specialist-assisted review of personal risk factors, verification of family cancer history, risk calculation using the S-IBIS and CanRisk models, genetic counseling, and genetic testing when clinically indicated. Participants receive risk-adapted recommendations for further breast cancer screening and follow-up.
Participants receive an individual clinical and genetic breast cancer risk assessment. Personal risk factors are reviewed with the assistance of a specialist, and family cancer history is verified using the Slovenian Cancer Registry. Breast cancer risk is calculated using the S-IBIS and CanRisk models. Genetic counseling is provided, and genetic testing is performed when the participant meets the applicable clinical criteria. Recommendations for screening and follow-up are adapted to the reassessed level of breast cancer risk.

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Proportion of Participants Reclassified to Population-Level Breast Cancer Risk
Tidsramme: Through study completion, up to 34 months

The number of participants previously classified as having moderately increased or high breast cancer risk who are reclassified as having population-level risk after the comprehensive reassessment will be divided by the total number of participants who complete the reassessment and expressed as a percentage.

The comprehensive reassessment includes specialist-assisted review of personal breast cancer risk factors, verification of family cancer history, breast cancer risk calculation using the S-IBIS and CanRisk models, and genetic test results when available.

Through study completion, up to 34 months

Sekundære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Agreement Between S-IBIS and CanRisk Breast Cancer Risk Classifications
Tidsramme: Through study completion, up to 34 months
The number and percentage of participants assigned to the same breast cancer risk category by the S-IBIS and CanRisk models will be reported. The evaluated categories are population-level risk, moderately increased risk, and high risk. The same available participant data will be used for both risk calculations.
Through study completion, up to 34 months

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

10. marts 2025

Primær færdiggørelse (Anslået)

31. december 2027

Studieafslutning (Anslået)

31. december 2027

Datoer for studieregistrering

Først indsendt

15. juli 2026

Først indsendt, der opfyldte QC-kriterier

27. juli 2026

Først opslået (Faktiske)

29. juli 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

29. juli 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

27. juli 2026

Sidst verificeret

1. juli 2026

Mere information

Begreber relateret til denne undersøgelse

Andre undersøgelses-id-numre

  • ORI2025-2

Plan for individuelle deltagerdata (IPD)

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INGEN

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