Fertility preservation is time-sensitive because some cancer treatments can damage sperm, eggs or reproductive tissue, while the cancer itself can also affect fertility. German university centers including Freiburg and Düsseldorf publish dedicated fertility-preservation services before potentially gonadotoxic treatment. The right option depends on sex, age and pubertal status, cancer type, urgency of therapy, current fertility and the time available before treatment. The oncology team and reproductive-medicine service should coordinate the plan so fertility preservation does not create an unsafe delay in cancer treatment.
Raise fertility before treatment starts, not after the first cycle
Freiburg explicitly describes fertility preservation before chemotherapy or radiotherapy, and its testicular-cancer information notes the option of sperm cryopreservation before treatment. Düsseldorf's UniCareD program likewise advises patients facing fertility-threatening therapy to discuss preservation with the treating oncologist. If future biological parenthood matters, ask about this as soon as the treatment plan is being defined.
Sperm cryopreservation can often be organized quickly
Düsseldorf publishes cryopreservation of sperm, testicular tissue and epididymal samples as fertility-preservation options and states that some male preservation pathways can be organized within a short time window before treatment. Freiburg also offers sperm cryopreservation through its reproductive-medicine service. The exact method depends on whether sperm can be obtained reliably and on the clinical situation.
- Semen collection and sperm cryopreservation when feasible
- Specialist discussion if semen collection is not possible or sperm counts are very low
- Testicular sperm or tissue procedures only when clinically appropriate
- Storage arrangements and long-term cryobank fees
- Future assisted-reproduction requirements
Egg and ovarian-tissue preservation require different timing
For patients with ovaries, Düsseldorf and Freiburg describe established fertility-preservation options such as egg cryopreservation and ovarian-tissue cryopreservation. Ovarian stimulation for egg collection usually requires more time than tissue cryopreservation, so the oncology and reproductive teams must decide what is realistic without compromising the cancer timeline.
Not every cancer treatment carries the same fertility risk
The fertility risk depends on the exact chemotherapy agents and cumulative dose, radiation field and dose, surgery, age and baseline reproductive function. Do not assume that every treatment causes infertility or that fertility will recover automatically. Ask the treating team to explain the expected risk for the actual planned regimen.
Testicular cancer deserves an early fertility conversation
Freiburg's testicular-cancer information specifically notes sperm preservation before treatment when future fertility is desired. Orchiectomy of one testis does not automatically mean infertility, but chemotherapy, radiotherapy, the disease itself or pre-existing reduced sperm quality can affect reproductive options. For an international patient, fertility planning should happen before the treatment sequence becomes difficult to change.
What to ask the German center before travelling
If treatment is planned in Germany, clarify whether the oncology hospital has its own fertility-preservation service or coordinates with another center.
- How urgent is cancer treatment?
- What fertility risk is expected from the proposed regimen?
- Which preservation options are medically realistic before treatment?
- How many days are needed?
- Can fertility assessment and preservation be organized before admission?
- Who stores the samples or tissue and under what contract?
- What are the initial and ongoing storage costs?
- What happens to stored material if the patient moves country or changes provider?
- What documents or infectious-disease tests are required before cryopreservation?
Separate preservation costs from the cancer-treatment estimate
Fertility-preservation services can be provided by a reproductive-medicine unit or cryobank and may not be included in the oncology hospital's treatment quotation. Ask for a separate written financial explanation covering consultation, laboratory testing, collection or surgery, cryopreservation and ongoing storage. Coverage rules can vary by insurance status and individual circumstances.
Do not delay urgent cancer treatment without specialist agreement
Fertility preservation is important but cannot safely override an urgent oncology timetable. If treatment must start quickly, ask the oncology and fertility teams which options can be completed within the available window and which are not appropriate. This guide is for planning questions; the treating specialists must make the timing decision.
Official sources
Last source-reviewed 2026-08-30. Clinical guidance, hospital instructions and airline or travel-provider requirements can change. Follow the treating team's current individualized advice and the relevant provider's current rules before acting.
- Fertility preservation before chemotherapy or radiotherapy — University Medical Center Freiburg ↗
- Testicular cancer – sperm preservation before treatment — University Medical Center Freiburg ↗
- UniCareD fertility preservation before cancer treatment — University Hospital Düsseldorf ↗
- UniCareD cryobank fertility-preservation options — University Hospital Düsseldorf ↗