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Perceptions and Acceptance of Grafting of Cryopreserved Testicular Tissue (PACTT)

29 octobre 2026 mis à jour par: Murdoch Childrens Research Institute

Perceptions and Acceptance of Grafting of Cryopreserved Testicular Tissue (PACTT)

Cancer treatment can cause infertility. Fertility preservation is possible for many populations through, egg, sperm or ovarian tissue freezing prior to cancer treatment. However, there is no established technology to protect the fertility of pre-pubertal boys.

Outcomes: Primary outcome is to identify whether male (assigned male at birth) oncology survivors who had prior testicular tissue cryopreservation would be willing to undergo testicular tissue grafting. The secondary outcomes identify what factors influence decision for testicular grafting including demographics factors, fertility related knowledge, reproductive goals and concerns, unmet fertility needs, decisional conflict and regret about fertility care, patient reported outcome measures (stress and anxiety), attempted or actual parenthood or natural fertility restoration

Participants: 105 Male aged 18 years and over who completed oncology treatment at the Royal Children's Hospital (RCH) at least one year prior and had testicular tissue cryopreservation for fertility preservation.

Sites: Murdoch Children Research Institute (MCRI)

Aperçu de l'étude

Statut

Pas encore de recrutement

Les conditions

Intervention / Traitement

Description détaillée

Cancer treatment can cause infertility. Fertility preservation is possible for many populations through egg, sperm or ovarian tissue freezing prior to cancer treatment. There is no established technology to protect the fertility of prepubertal boys. Many centres internationally, including the Royal Children's Hospital, have offered freezing of testis tissue as a new technology, in the hope that technology will develop to be able to mature the tissue into sperm so that it can be used for parenthood. In animals, grafting of the testis tissue back into the body has resulted in successful births. This has paved the way for testicular tissue grafting in humans as a novel technology. The primary aim of this study is to identify whether male (assigned male at birth) patients who have completed oncology treatment who had prior testicular tissue cryopreservation would be willing to undergo testicular tissue grafting. Predictive factors and barriers will also be assessed. We will ask participants to complete a survey which will take 15 minutes. Participants will be reimbursed for their time. They will be referred to reproductive counsellors if participation causes emotional discomfort or distress

Study Question: What are the factors influencing intention to autograft previously stored cryopreserved testicular tissue for the purposes of fertility restoration?

Study Objectives: To identify barriers, enablers and facilitators for testicular tissue grafting in adult who have completed oncology treatment who had previously undergone testicular tissue cryopreservation in childhood.

Primary Objective: To identify whether patients who have completed oncology treatment who had testicular tissue cryopreservation would be willing to undergo testicular tissue grafting.

Secondary Objective: to identify what factors influence decisions for testicular tissue grafting including demographic factors, fertility-related knowledge, reproductive goals and concerns, unmet fertility needs, decisional conflict patient reported outcome measures (stress and anxiety), attempted or actual parenthood or natural fertility restoration.

Design: Cross-sectional survey of patients who have completed oncology treatment who had prior testicular tissue cryopreservation at The Royal Children's Hospital as part of their oncology treatment. Validated and purposively designed surveys (by clinician scientists) and utilised in previous studies of Adolescent and Young Adult (AYA) Oncofertility will identify barriers and enablers. Qualitative data will be grouped according to The Theory of Planned Behaviour and the COM-B (Capability, Opportunity, Motivation - Behaviour) model.

Type d'étude

Observationnel

Inscription (Estimé)

105

Contacts et emplacements

Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.

Coordonnées de l'étude

Lieux d'étude

    • Victoria
      • Parkville, Victoria, Australie, 3052
        • Murdoch Children's Research Institute
        • Contact:
        • Sous-enquêteur:
          • Debra Gook, PhD, Senior Investigator
        • Sous-enquêteur:
          • Margaret Zacharin, MBBS, FRACP, PhD
        • Sous-enquêteur:
          • Michael Assis, PhD, Postdoc Research Fellow
        • Sous-enquêteur:
          • Hossam Elzeiny, MB ChB, AMC Certificate, FRANZ
        • Sous-enquêteur:
          • Zobaida Edib, PhD, Postdoc Research Fellow
        • Sous-enquêteur:
          • Apoorva Bhargava, MPH, Research Fellow
        • Sous-enquêteur:
          • Diana Navarro - Perez, PhD, MSc

Critères de participation

Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.

Critère d'éligibilité

Âges éligibles pour étudier

18 ans et plus (Adulte, Adulte plus âgé)

Accepte les volontaires sains

Non

Sexes éligibles pour l'étude

Homme

Méthode d'échantillonnage

Échantillon non probabiliste

Population étudiée

Participants are identified from the Melbourne Oncofertility Registry (MORE Registry) as patients who had testicular tissue cryopreservation at the Royal Children's Hospital as part of their cancer treatment.

La description

Inclusion Criteria:

  • Assigned male at birth who have completed oncology treatment of childhood oncology treatment (they may have had malignant or benign disease)
  • Who are 18 years and over
  • Who had testicular tissue cryopreservation as part of their childhood oncology care
  • Who have completed curative gonadotoxic treatment.
  • Can communicate in English.
  • Can provide a signed written informed consent

Exclusion Criteria:

  • Deceased patients
  • Patients currently undergoing active gonadotoxic cancer treatment.
  • Patients who are palliative

Plan d'étude

Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.

Comment l'étude est-elle conçue ?

Détails de conception

  • Modèles d'observation: COHORT
  • Perspectives temporelles: PROSPECTIVE

Cohortes et interventions

Groupe / Cohorte
Intervention / Traitement
105 males aged 18 years and above who had testicular tissue cryopreservation at the RCH

No intervention

Que mesure l'étude ?

Principaux critères de jugement

Mesure des résultats
Description de la mesure
Délai
Willingness to consider testicular tissue grafting as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting as measured by the likert scale will range from 1 (strongly agree) to 7 (strongly disagree). Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline

Mesures de résultats secondaires

Mesure des résultats
Description de la mesure
Délai
Willingness to consider testicular tissue grafting within a specified time period (1 year) as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting as measured by the likert scale will range from 1 (strongly agree) to 7 (strongly disagree). Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline
Willingness to consider testicular tissue grafting within a specified time period (5 year) as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting as measured by the likert scale will range from 1 (strongly agree) to 7 (strongly disagree). Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline
Willingness to consider testicular tissue grafting within a specified time period (10 year) as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting as measured by the likert scale will range from 1 (strongly agree) to 7 (strongly disagree). Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline
Willingness to consider testicular tissue grafting according to perceived potential beneficial outcomes as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting in the hope that it will contribute to [parenthood as soon as possible] [mature sperm that can be frozen] [improved guidelines for testicular grafting].

Responses from 1 strongly agree to 7 strongly disagree. Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline
Willingness to consider testicular tissue grafting according to perceived safety as measured by responses to a likert scale on the study survey
Délai: Baseline

Willingness to undergo testicular tissue grafting because it is [safe] [acceptable] [within my right to do so] responses as percentages 0, 1, 5, 10, 20% or more.

Responses from 1 strongly agree to 7 strongly disagree. Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing); or agree/disagree.

Baseline
Perceived social pressure from partners, parents, general practitioners (GP) and religious leaders as measured by responses to the Theory of Planned Behaviour questionnaire.
Délai: Baseline

Responses from 1 strongly agree to 7 strongly disagree. Responses will be assessed where 4 will be designated neutral. Survey responses will be dichotomised (<4 = not willing and >4 = willing)

Baseline
Perceived behavioural control as measured by responses to the Theory of Planned Behaviour questionnaire.
Délai: Baseline

Responses to either disagree or agree.

Baseline
Unmet fertility information needs as measured by The Unmet Needs Survey (as used/adapted from Benedicts et al., 2023).
Délai: Baseline

Unmet fertility information needs is assessed on a 6-point scale, ranging from 0 to 5, higher scores indicate greater unmet information needs. Unmet fertility information needs will be summarised as a mean score.

Baseline
Decisional Conflict as measured by the Decisional Conflict Scale (DCS).
Délai: Baseline

The decisional conflict scale ranges between 0 to 100.Higher scores on the scale indicate greater decisional conflict.

Baseline
Cancer impact and information as measured by The Cancer Impact and Information Needs survey (as used by the AYA HOPE Study Collaborative Group - Harlan et al., 2011).
Délai: Baseline

Assess opportunity of making a decision measured by cancer impact and information needs. Cancer impact and information needs are assessed on a 6 point Likert scale (1 = Very negative impact and 6 = Does not apply).

Baseline
Financial toxicity survey as measured by the Comprehensive Score for Financial Toxicity (COST).
Délai: Baseline

Financial toxicity scale is evaluated using an 11 items survey where scores range from 0 to 44 with lower scores indicating a higher cancer-related financial impact.

Baseline
Anxiety as measured by the Patient-Reported Outcomes Measurement Information System (PROMIS) 6a
Délai: Baseline

PROMIS anxiety is assessed using their short form with 6 items (PROMIS 6a) items in a 5 Likert scale (1 = never and 5 = always) raw scores are transformed using PROMIS T-score tables, higher T score means worse health.

Baseline
Depression as measured by PROMIS 6a
Délai: Baseline

PROMIS depression is assessed using their short form with 6 items (PROMIS 6a) items in a 5 Likert scale (1 = never and 5 = always) raw scores are transformed using PROMIS T-score tables, higher T score means worse health.

Baseline
Stress as measured by PROMIS 8a
Délai: Baseline

PROMIS stress is assessed using its short form (PROMIS 8a) 8 items in a 5 Likert scale (1 = never and 5 = always) raw scores are transformed using PROMIS T-score tables, higher T score means worse health.

Baseline
Optimism as measured by the adapted Life Orientation Scale.
Délai: Baseline

Optimism (Life Orientation) scale is used in the reduced form with only the optimistic measures (3-item LOT-R optimism subscale) with responses assessed in a 5-point Likert scale ranging from 1 = strongly disagree and 5 = strongly agree, higher scores indicate higher dispositional optimism.

Baseline
Medical Decision-Making preferences as measured by the Control Preferences Scale
Délai: Baseline

Medical Decision-Making preference is evaluated following the Control Preference Scale, where 5 items are ranked from the most preferred to the least preferred option, the highest rank item will determine if the chosen role is active, passive or collaborative.

Baseline
Reproductive Goals (as adapted from Lehmann et al., 2017).
Délai: Baseline

Reproductive goals are assessed using 5 items categorising responses between yes, no or unsure.

Baseline

Collaborateurs et enquêteurs

C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.

Parrainer

Collaborateurs

Les enquêteurs

  • Chercheur principal: Yasmin Jayasinghe, MBBS, FRANZCOG, PhD, University of Melbourne

Publications et liens utiles

La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.

Publications générales

Dates d'enregistrement des études

Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.

Dates principales de l'étude

Début de l'étude (Estimé)

1 décembre 2026

Achèvement primaire (Estimé)

31 décembre 2027

Achèvement de l'étude (Estimé)

30 juin 2028

Dates d'inscription aux études

Première soumission

29 octobre 2026

Première soumission répondant aux critères de contrôle qualité

29 octobre 2026

Première publication (Réel)

4 novembre 2026

Mises à jour des dossiers d'étude

Dernière mise à jour publiée (Réel)

4 novembre 2026

Dernière mise à jour soumise répondant aux critères de contrôle qualité

29 octobre 2026

Dernière vérification

1 octobre 2026

Plus d'information

Termes liés à cette étude

Autres numéros d'identification d'étude

  • HREC 130619

Plan pour les données individuelles des participants (IPD)

Prévoyez-vous de partager les données individuelles des participants (DPI) ?

OUI

Description du régime IPD

De- identified individual participant data (IPD) will be shared with study collaborators upon request and as necessary to facilitate research collaborations and study publications.

Individual participant data that underlie the results reported after de-identification (text, tables, figures and appendices), participant information and consent form (PICF).

Délai de partage IPD

Following analysis and article publication.

Critères d'accès au partage IPD

Only authorised study site staff will have access to de-identified information. De-identified IPD will be shared with collaborators only in specific circumstances where sharing the data will benefits and extend research collaborations.

Type d'informations de prise en charge du partage d'IPD

  • CIF

Informations sur les médicaments et les dispositifs, documents d'étude

Étudie un produit pharmaceutique réglementé par la FDA américaine

Non

Étudie un produit d'appareil réglementé par la FDA américaine

Non

Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .