Clinical trial Recruiting at 1 site Observational Ages 14 to 50

Effects of cancer treatments on fertility

Official title: FertiTOX - Platform for Fertility Related Gonadotoxicity of Cancer Therapies

Run by Universitätsklinik fur Frauenheilkunde, Inselspital Bern · NCT05885048 · Data updated 2026-11-12

This study looks at how cancer treatments like chemotherapy and radiation affect fertility in both men and women by checking hormone and sperm levels before and after treatment.

More Fertility Preservation trials

Quick facts

Study typeObservational
Ages14 Years to 50 Years
SexAll
Enrollment7000 (estimated)
SponsorUniversitätsklinik fur Frauenheilkunde, Inselspital Bern
Academic / other
Drugs / interventionschemotherapy
Locations1 site (Bern)
StatusRecruiting
StartedDecember 1, 2023
Main results expectedDecember 31, 2028
Study endsDecember 31, 2038
Registry record updatedJuly 30, 2026
Trial IDNCT05885048 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include cancer patients aged 14-50 in Austria and Switzerland, and 18-50 in Germany, who are undergoing gonadotoxic therapies.

Probably not a fit

Patients who do not consent to participate or have language barriers may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This observational study aims to investigate how gonadotoxic treatments, such as chemotherapy and radiotherapy, impact fertility in cancer patients. It focuses on measuring changes in Anti-Müllerian hormone (AMH) levels in females and sperm concentration in males before and after treatment. The study will collect fertility-related data from various centers in Switzerland, Germany, and Austria over a period of up to 15 years. Data will be gathered through routine clinical care and analyzed to understand the long-term effects of these therapies on reproductive health.

Why it matters

Potential benefit: If successful, this study could provide critical insights into fertility preservation strategies for cancer patients undergoing gonadotoxic treatments.

How similar studies have gone: Other studies have shown varying degrees of success in understanding the impact of gonadotoxic therapies on fertility, making this approach both relevant and necessary.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with cancer or with benign reasons undergoing chemotherapy and/or radiotherapy of the pelvis (females) and the testicles (males) and/or immune therapy;
* Willing to participate;
* Austria: 14-50 years old (adolescents and adults), Germany: 18-50 years old, Switzerland: 14-50 years old (adolescents and adults);
* Serum hormone analysis before gonadotoxic therapy (females) or serum hormone analysis and sperm analysis before gonadotoxic therapy (males).

Exclusion Criteria:

* Missing consent;
* Language barrier.

Where it's running

  • University Women's Hospital (Inselspital)
    Bern, Switzerland
    Recruiting

Study contacts

  • Principal investigator: Michael von Wolff, Prof. Dr. — Insel Gruppe AG, University Hospital Bern
  • Study coordinator: Michael von Wolff, Prof. Dr.
  • Email: michael.vonwolff@insel.ch
  • Phone: 0041316321301

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.