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Chemosensitivity During Phases of the Menstrual Cycle in Breast Cancer Patients

Chemosensitivity During Phases of the Menstrual Cycle in Breast Cancer Patients

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06273800
Acronym
Chemosense
Enrollment
100
Registered
2024-02-23
Start date
2025-10-14
Completion date
2036-07-15
Last updated
2025-11-26

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Keywords

Triple negative tumor, Stage I - III disease, Starting neo adjuvant treatment, Regular physiological menstrual cycle (premenopausal)

Brief summary

This study is a prospective, multicenter study in which a serum sample will be collected at the day of starting neo adjuvant treatment in breast cancer patients

Interventions

PROCEDUREBlood sample

Collection of serum sample at the day of start of neo adjuvant treatment

Sponsors

The Netherlands Cancer Institute
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
DIAGNOSTIC
Masking
NONE

Intervention model description

collection of serum sample blood at first day of neo adjuvant treatment

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 59 Years
Healthy volunteers
No

Inclusion criteria

* Women with a new diagnosis of triple negative breast cancer who have not yet started systemic treatment. * Patients with stage I-III disease, patient with locoregional recurrence who have not been treated with chemotherapy before. , * Aged \< 60 years * Women having a (regular) physiological menstrual cycle * Patients who are assigned to receive neoadjuvant chemotherapy with or without immunotherapy, targeted therapy and endocrine therapy * Patients must be systemic treatment naïve for current malignancy (e.g. no chemotherapy, hormonal therapy or targeted therapy) * Signed written informed consent

Exclusion criteria

* current use of hormonal contraception or in the six weeks prior to start of neoadjuvant systemic treatment for breast cancer, such as: * Oral contraception (OAC) * Hormonal intra-uterine device (IUD, Mirena) * No ovarian function suppression to preserve fertility * Other forms of hormonal contraception, including but not limited to: nuva-ring, Implanon, prikpil * Currently pregnant and / or breast feeding. In case of use of hormonal contraception or breast feeding in de last year: patients should have had at least 2 menstrual cycles since stopping hormonal contraception. \- active other malignancy * IVF-trajectory for egg cell preservation prior to start of neoadjuvant systemic treatment

Design outcomes

Primary

MeasureTime frameDescription
pCR rateAt 6 monthsNumber of patients achieving a pathological complete response

Secondary

MeasureTime frameDescription
Pathological reduction on tumor sizeAt 6 monthsNumber of patients achieving a pathological response (CR, PR, SD) based on pathology report after neo adjuvant
Residual cancer burden (RCB)At 6 monthsquantificaton of the residual disease after neoadjuvant therapy
Radiological reduction on tumor sizeAt 6 monthsNumber of patients achieving a radiological response (CR, PR, SD) based on MRI after neo adjuvant treatment
Recurrence-free interval (RFI)Up to 120 monthsNumber of patients with disease recurrence
Overall survival (OS)Up to 120 monthsNumber of patients alive or deceased
Distant recurrence free interval (DRFI)Up to 120 monthsNumber of patients with distant recurrence

Countries

Netherlands

Contacts

Primary ContactSabine Linn, MD
s.linn@nki.nl+31205129111
Backup ContactIngrid Mandjes
i.mandjes@nki.nl

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026