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Recruiting Phase 3 NCT06689085

52 Week Study + 24-Month Long-Term Extension of Safety, PK, & Efficacy of XYOSTED® for Testosterone Replacement in Male Adolescents With Hypogonadism

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Trial Parameters

Condition Hypogonadism, Male
Sponsor Halozyme Therapeutics
Study Type INTERVENTIONAL
Phase Phase 3
Enrollment 100
Sex MALE
Min Age 12 Years
Max Age 17 Years
Start Date 2025-03-07
Completion 2028-03
Interventions
Testosterone enanthate

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Brief Summary

This is a 52-week open label single arm study + 24-Month long-term safety extension to investigate the effects of XYOSTED, as testosterone replacement therapy, on adolescent males with either primary or secondary hypogonadism. The study aims to determine the effectiveness of XYOSTED measured by continuation or induction of puberty in addition to XYOSTED dosage, safety and testosterone levels.

Eligibility Criteria

Inclusion Criteria: 1. Diagnosed with a deficiency or absence of endogenous testosterone due to primary or secondary hypogonadism of a known etiology. Children with combined hormone deficiencies are permitted to enroll (but the child must already be receiving treatment for concomitant hormonal deficiencies) 2. Participants receiving prior testosterone treatment must be receiving a stable dose for at least 12 weeks prior to Screening. Treatment naive participants are permitted to enroll. 3. Have parent(s) or a legal guardian who will voluntarily provide written informed consent for the child to participate in the study 4. Willing to provide assent for participation in the study 5. Be a male 12 to \< 18 years of age at the time of consent/assent 6. Have Legally Authorized Representative who is able to understand and comply with all study procedures and agrees to have the child participate in the study program as outlined in the protocol 7. Requires chronic pharmacologic support for the i

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