This survey study aims to assess the long-term outcomes and patient satisfaction of men who underwent a fertility preservation procedure i.e., a testicular biopsy with cryopreservation of immature testicular tissue, during prepuberty or peripuberty at the Cliniques Universitaires Saint Luc (CUSL) since the start of the fertility preservation program in 2005. Participants will be asked about their current reproductive health status, their experience with the fertility preservation process, and their overall satisfaction with the care they received.

A monocentric experimental study conducted as a survey, including patients enrolled in our fertility preservation program between May 2005 and May 2020.

Participants were asked about their current reproductive health status, their experience with the fertility preservation process, and their overall satisfaction with the care they received.

Assessment will be conducted by means of a confidential survey in > 18 yo patients who have undergone in their childhood a fertility preservation.

The number of patients who are eligible for the follow-up survey (n = 64) within the fertility preservation program of the CUSL is important compared to the overall number of boys who have participated in such a FP programme worldwide (n=1033) in 2023.

Recipients' satisfaction level will be evaluated by both general and specific scores. The general satisfaction score is calculated by combining the responses to questions rating specifically recipients' satisfaction on specific items using a 5 elements Likert scale (Very Dissatisfied to Very Satisfied) and responses to closed questions which inquire participants' global satisfaction on specific subjects.