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Impact of Gonadotoxic Therapies on Fertility

FertiTOX - Platform for Fertility Related Gonadotoxicity of Cancer Therapies

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT05885048
Acronym
FertiTOX
Enrollment
7000
Registered
2023-06-01
Start date
2023-12-01
Completion date
2038-12-31
Last updated
2026-07-30

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

Conditions

Cancer, Effects of Immunotherapy, Fertility Issues, Fertility Preservation, Toxicity Due to Chemotherapy, Toxicity Due to Radiotherapy

Keywords

Gonadotoxicity

Brief summary

The goal of this observational study is to learn how gonadotoxic treatments (chemotherapies, radiotherapies or immunotherapies) affect the fertility status of participants with cancer. The main questions it aims to answer are: * in females, if cancer therapies reduce the Anti-Müllerian hormone (AMH) concentration (ovarian reserve); * in males, if cancer therapies reduce sperm concentration (sperm quality).

Detailed description

This is an international multicenter prospective exploratory study of fertility related data generated mostly routinely in fertility centers in Switzerland belonging to the Swiss network "FertiSAVE" as well as in fertility centers in Germany and Austria belonging to the German-Swiss-Austrian network "FertiPROTEKT" and further international centers who are interested to participate. Both networks include in total around 200 centers. The data, which are mainly part of the routine clinical care, will be collected by the physicians and added to the REDcap study registry. Patients will be coded by the center to be able to follow them up. Each center will only have access to its own registry data set. Access to the total data set is only permitted for the principal investigator and the specific sub-investigators. Data collection before the start of gonadotoxic treatment will be performed for 5 years. Data collection after the end of gonadotoxic treatment will be performed for 10 years (time points: at 12-15 months, at 5 years and at 10 years).

Interventions

Test hormone levels in blood

Spermiogram

Participant satisfaction assessment

OTHERQuality of Life questionnaire

The World Health Organization Quality of Life Brief 26-item Version (WHOQOL-BREF)

Sponsors

Michael von Wolff
Lead SponsorOTHER
University of Bern
CollaboratorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
14 Years to 50 Years
Healthy volunteers
No

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.

Design outcomes

Primary

MeasureTime frameDescription
Anti-Müllerian hormone (AMH) concentration in femalesChange from baseline in AMH concentration at 12-15 months after the end of gonadotoxic treatmentFertility status after gonadotoxic treatment in females (referring to ovarian reserve). Blood will be drawn to measure AMH concentration. Unit of measure: for serum AMH value is picomol per liter (pmol/L).
Sperm concentration in malesChange from baseline in sperm concentration at 12-15 months after the end of gonadotoxic treatmentFertility status after gonadotoxic treatment in males (referring to sperm quality). Participants provide the laboratory with a sperm sample for analysis. Unit of measure: for sperm concentration is millions per milliliter (10\^6/mL).

Secondary

MeasureTime frameDescription
Fertility preservation measures performedBefore the start of gonadotoxic treatmentProportion of female participants who freeze their ovarian tissue, oocytes, zygotes or embryos. Proportion of male participants who freeze their sperm or testicular tissue.
Satisfaction with the fertility preservation counselling before the gonadotoxic treatment12-15 months after the end of gonadotoxic treatmentBoth female and male participants will have to rate their counselling satisfaction by choosing a score on a scale from 1 to 10. Value 1, being the lowest score (not satisfied at all) and value 10 being the highest score (very satisfied).
Satisfaction with the decision to have undergone fertility preservation measures or not12-15 months after the end of gonadotoxic treatmentBoth female and male participants will have to rate their decisional satisfaction by choosing a score on a scale from 1 to 10. Value 1, being the lowest score (not satisfied at all) and value 10 being the highest score (very satisfied).
Number of spontaneous pregnancies and children born12-15 months, 5 years and 10 years after the end of gonadotoxic treatmentPregnancies which occured naturally, without the help of fertility preservation measures.
Number of pregnancies and children born with the help of fertility preservation measures12-15 months, 5 years and 10 years after the end of gonadotoxic treatmentPregnancies which occured with the help of fertility preservation measures (in females: frozen ovarian tissue, oocytes, zygotes or embryos, and in males: frozen sperm or testicular tissue).
Quality of life assessment12-15 months, 5 years and 10 years after the end of gonadotoxic treatmentThe World Health Organization Quality of Life Brief 26-item version (WHOQOL-BREF) is a 26-item instrument consisting of four domains: physical health (7 items), psychological health (6 items), social relationships (3 items), and environmental health (8 items), while the remaining two items are for the overall QoL and general health domains.

Countries

Switzerland

Contacts

CONTACTMichael von Wolff, Prof. Dr.
michael.vonwolff@insel.ch0041316321301
PRINCIPAL_INVESTIGATORMichael von Wolff, Prof. Dr.

Insel Gruppe AG, University Hospital Bern

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jul 31, 2026