Could your period affect chemo success? new study investigates

NCT ID NCT06273800

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether the phase of a woman's menstrual cycle when she starts chemotherapy affects how well the treatment works for breast cancer. Researchers will collect a blood sample from 100 premenopausal women with triple-negative breast cancer on the day they begin neoadjuvant chemotherapy. The goal is to see if the timing is linked to a higher chance of a complete response.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to
If successful, this could help doctors personalize chemotherapy timing based on menstrual cycle to improve outcomes.
What could go wrong
This is an observational study, not a treatment trial. It may not find a clear link, and results may not change practice.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Antoni van Leeuwenhoek

    RECRUITING

    Amsterdam, North Holland, 1066CX, Netherlands

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