Breast Cancer - FemaleNCT07804745
Fertility Decision and Outcomes in Young Women With Breast Cancer
An observational study of Breast Cancer - Female and Fertility, run by Second Affiliated Hospital, Zhejiang University, School of Medicine at 3 sites in China.
Trial summary
This observational study is to learn about the fertility outcomes and decision after breast cancer diagnosis, and the current status of fertility consultation and decision support in young women diagnosed with breast cancer in China. Read more about this study
- Who is it for?
- Ages 18 to 40 years, women only
- Conditions the study is for
- Breast Cancer - Female, Fertility
- How many people
- 300 participants
- Where
- 3 sitesChina
- Study dates
- 15 Oct 2025to 31 Oct 2026
- Phase
- Observational
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 40 years
- Women only
- Adult
Study population: This study will include female patients aged 18-40 years who were diagnosed with breast cancer between January 2013 and December 2023 at one of three participating centres in China: the Second Affiliated Hospital of Zhejiang University School of Medicine, Jilin Cancer Hospital, and Hangzhou First People's Hospital. Eligible patients must have complete medical records and no child before cancer diagnosis. Patients with stage IV disease at diagnosis, those with pre-existing infertility factors, or those with other malignancies, will be excluded. Patients who decline to participate or cannot be contacted for follow-up will also be excluded.
Who may be able to join
- Female breast cancer patients, aged 18-40 years at diagnosis.
- Treated at the three participating hospitals between 1 January 2013 and 31 December 2023.
- Complete clinical documentation available in the electronic medical record system.
- Had no child before cancer diagnosis.
Who cannot join
- Prior reproductive compromise (surgical or diagnostic infertility or pre-existing infertility factors) before cancer diagnosis.
- Presented with de novo stage IV (metastatic) disease.
- Had a history of other malignancies.
- Patients who refuse to participate or cannot be contacted for follow-up.
Trial locations and contacts
3 sites in 1 country.
China3 sites
Jilin Cancer Hospital
Changchun, Jilin
Hangzhou First People's Hospital
Hangzhou, Zhejiang
the Second Affiliated Hospital of Zhejiang University School of Medicine
Hangzhou, Zhejiang
About this study
This observational study is to learn about the fertility outcomes and decision after breast cancer diagnosis, and the current status of fertility consultation and decision support in young women diagnosed with breast cancer in China.
- Conditions
- Breast Cancer - Female, Fertility
- Being tested
- No intervention (observational study)
- Keywords
- Breast Cancer, Fertility, Pregnancy
- Medical subject headings
- Breast Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
No intervention (observational study)Other
This is an observational study. The study is based on the real-world conditions, and doesn't have any intervention.
| Study group | Role | What they receive |
|---|---|---|
| Case Group (No childbearing after diagnosis) | Patients diagnosed with breast cancer who had no live birth prior to diagnosis but had no live birth after diagnosis. Receives: Other: No intervention (observational study) | |
| Control Group (Childbearing after diagnosis) | Patients diagnosed with breast cancer who had no live birth prior to diagnosis but had at least one live birth after diagnosis. Receives: Other: No intervention (observational study) |
What is being measured
The primary outcome is the main question the study is designed to answer.
Childbearing after breast cancer diagnosis
The investigators will follow up with patients who had not given birth before their cancer diagnosis, to establish whether they had given birth by the end of follow-up. It will be assessed by patient self-report during follow-up and available medical records. The outcome will be recorded as a binary variable (yes/no).
Measured: Up to 2026
Secondary outcomes (2)
Fertility preservation measures uptake
The investigators will calculate the proportion of patients who underwent fertility preservation procedures in cases vs. controls.
Measured: up to 2026
Multidisciplinary collaboration involvement
The investigators will calculate the proportion of patients with multidisciplinary team discussion or referral involving reproductive medicine, gynecology, or fertility specialists.
Measured: up to 2026
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted4 Sep 2026
- Study start15 Oct 2025
- Primary completion1 Sep 2026
- Study completion31 Oct 2026 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Breast Cancer - FemaleStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Case-control
- Time perspective
- Retrospective
- Enrolment
- 300 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
- Sponsor type
- University, hospital or other
- Collaborators
- Jilin Provincial Tumor Hospital, First People's Hospital of Hangzhou
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT07804745
- Sponsor's protocol ID
- 2025-1408
- Status last verified
- Sep 2026
- First submitted
- 1 Sep 2026
- Last updated
- 30 Sep 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No