Follow-up of Fertility in Young Adults Who Did or Did Not Store Testicular Tissue Before Gonadotoxic Treatment for Fertility Preservation.

Condition: Childhood Cancer, Childhood Hematological Disease

Study Type: Interventional

Clinical Trials Identifier NCT 8-digits: NCT04202094

Sponsor: Universitair Ziekenhuis Brussel


  • Age: minimum 18 Years maximum N/A
  • Gender: Male

Inclusion Criteria:

  • Young adults (≥18 years).
  • Diagnosis of cancer or hematological disorder during childhood (<18 years).
  • High-risk gonadotoxic treatment (with an ≥80% risk of later fertility problems) during childhood.
  • At least one year after the last received gonadotoxic treatment.
  • Did or did not undergo a testicular tissue biopsy procedure at a young age as a fertility preservation strategy.

Exclusion Criteria:

  • Prepubertal patients and adolescents (<18 years).

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