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52-wöchige Studie zur Sicherheit, PK und Wirksamkeit von XYOSTED® zum Testosteronersatz bei männlichen Jugendlichen mit Hypogonadismus

5. November 2026 aktualisiert von: Halozyme Therapeutics

Offene, 52-wöchige Mehrfachdosisstudie zur Bewertung der Sicherheit, PK und Wirksamkeit von XYOSTED® für den Testosteronersatz bei männlichen Jugendlichen mit Mangel oder Fehlen von endogenem Testosteron aufgrund von primärem oder sekundärem Hypogonadismus

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.

Studienübersicht

Status

Rekrutierung

Bedingungen

Intervention / Behandlung

Detaillierte Beschreibung

This is a Phase 3/4, open-label, multicenter study in approximately 100 males 12 to < 18 years of age with primary or secondary hypogonadism (congenital or acquired). Each participant will be screened for eligibility within 28 days before receiving his first dose of study drug on Day 1. During the Screening period, each participant will have a full clinical examination with pubertal staging, including 2 separate serum total testosterone (TT) measurements obtained in the early morning, where the average (Cavg) will be considered baseline value. Each participant will be categorized as having primary or secondary hypogonadism prior to dosing on Day 1.

Participants meeting all eligibility criteria will be assigned to a starting dose of XYOSTED based on their weight and Targeted Tanner Stage on Day 1. The Targeted Tanner Stage will be determined during Screening by an experienced pediatric endocrinologist.

Participants will have dose adjustments during the study to achieve their Targeted Tanner Stage. Dose adjustments will be based on reviewing the TT concentration between doses (Cmid) by measuring serum TT 14 days after the administration of XYOSTED for participants receiving the Q4W schedule, 7 days after the administration of XYOSTED for participants who are on the Q2W schedule, and 4 days after administration of XYOSTED for participants on the Q1W schedule. Participants will be evaluated for further dose adjustments approximately every 3 months to achieve the desired targeted TT level.

Following the 52-week primary study, participants may join a 24-month long-term safety extension study to continue the evaluation of XYOSTED in this population. Participants will return to the clinic at 6-month intervals for evaluation for clinical evaluations, and laboratory and pharmacokinetic assessments.

Studientyp

Interventionell

Einschreibung (Geschätzt)

100

Phase

  • Phase 3

Kontakte und Standorte

Dieser Abschnitt enthält die Kontaktdaten derjenigen, die die Studie durchführen, und Informationen darüber, wo diese Studie durchgeführt wird.

Studienkontakt

Studieren Sie die Kontaktsicherung

Studienorte

    • California
      • Los Angeles, California, Vereinigte Staaten, 90027
        • Rekrutierung
        • Children's Hospital Los Angeles
      • Los Angeles, California, Vereinigte Staaten, 90048
        • Rekrutierung
        • Cedars-Sinai Medical Center
      • San Diego, California, Vereinigte Staaten, 92123
        • Rekrutierung
        • Rady Children's Hospital - San Diego
      • San Francisco, California, Vereinigte Staaten, 94143
        • Rekrutierung
        • University of California San Francisco
    • Colorado
      • Aurora, Colorado, Vereinigte Staaten, 80045
        • Rekrutierung
        • Children's Hospital Colorado
    • Florida
      • Jacksonville, Florida, Vereinigte Staaten, 32207
        • Rekrutierung
        • Nemours Children's Specialty Care - Jacksonville
    • Illinois
      • Chicago, Illinois, Vereinigte Staaten, 60611
        • Rekrutierung
        • Ann & Robert H. Lurie Children's Hospital of Chicago
    • Massachusetts
      • Boston, Massachusetts, Vereinigte Staaten, 02115
        • Rekrutierung
        • Boston Children's Hospital
      • Worcester, Massachusetts, Vereinigte Staaten, 01655
        • Rekrutierung
        • University of Massachusetts Memorial Medical Center
    • Minnesota
      • Minneapolis, Minnesota, Vereinigte Staaten, 55454
        • Rekrutierung
        • M Health Fairview U Minnesota
    • Missouri
      • St Louis, Missouri, Vereinigte Staaten, 63110
        • Rekrutierung
        • Washington University School of Medicine in St. Louis
    • Nevada
      • Las Vegas, Nevada, Vereinigte Staaten, 89113
        • Rekrutierung
        • The DOCS
    • New York
      • The Bronx, New York, Vereinigte Staaten, 10467
        • Rekrutierung
        • Children's Hospital at Montefiore
    • Oklahoma
      • Oklahoma City, Oklahoma, Vereinigte Staaten, 73104
        • Rekrutierung
        • OUHSC Pediatric Diabetes & Endocrinology
    • Pennsylvania
      • Philadelphia, Pennsylvania, Vereinigte Staaten, 19104
        • Rekrutierung
        • Children's Hospital of Philadelphia
    • South Carolina
      • Columbia, South Carolina, Vereinigte Staaten, 29203
        • Rekrutierung
        • Prisma Health Children's Hospital - Midlands
    • Texas
      • El Paso, Texas, Vereinigte Staaten, 79902
        • Rekrutierung
        • MedResearch
      • Houston, Texas, Vereinigte Staaten, 77030
        • Rekrutierung
        • Texas Children's Hospital
    • Utah
      • Salt Lake City, Utah, Vereinigte Staaten, 84112
        • Rekrutierung
        • Primary Children's Hospital
    • Virginia
      • Charlottesville, Virginia, Vereinigte Staaten, 22908
        • Rekrutierung
        • University of Virginia School of Medicine
    • Washington
      • Seattle, Washington, Vereinigte Staaten, 98105
        • Rekrutierung
        • Seattle Children's Hospital
      • Tacoma, Washington, Vereinigte Staaten, 98405
        • Rekrutierung
        • MultiCare Institute for Research & Innovation

Teilnahmekriterien

Forscher suchen nach Personen, die einer bestimmten Beschreibung entsprechen, die als Auswahlkriterien bezeichnet werden. Einige Beispiele für diese Kriterien sind der allgemeine Gesundheitszustand einer Person oder frühere Behandlungen.

Zulassungskriterien

Studienberechtigtes Alter

12 Jahre bis 17 Jahre (Kind)

Akzeptiert gesunde Freiwillige

Nein

Studienberechtigte Geschlechter

Männlich

Beschreibung

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 initiation and/or continuation of pubertal maturation

  8. Have a body mass index (BMI)-for-age greater than the 5th percentile and weigh ≥ 30 kg.

  9. If sexually active with a female partner of child-bearing potential, agrees to:

    1. Practice true abstinence including 30 days after the last IP administration, or,
    2. Use 2 adequate forms of highly effective contraception, one of which should be a physical barrier, during the study and for 30 days after the last IP administration.

Exclusion Criteria:

  1. Has abnormal thyroid function tests at Screening. May supplement per usual clinical practice and rescreen up to two times.
  2. Has suspected or known constitutional growth delay in growth and puberty (CDGP)
  3. Has evidence of possible nutritional or gastrointestinal disorder that may impact growth (e.g., abrupt weight loss within the 3 months prior to Screening, unmanaged celiac disease, inflammatory bowel disease)
  4. Has a known allergy or hypersensitivity to XYOSTED, or to any of its ingredients (testosterone enanthate and sesame oil)
  5. Participants receiving prior treatment with testosterone who are not on a stable dose for at least 12 weeks prior to Screening.
  6. Has an allergy to foods or products containing sesame seeds or sesame oil
  7. Has Stage 1 hypertension, defined as the average of 2 or more seated right arm BP measurements exceeding the 95th percentile for age, sex, and height, or SBP ≥ 130 mm Hg and/or DBP ≥ 80 mm Hg at Screening or Day 1.
  8. Has a clinically significant abnormal clinical laboratory test value at Screening, as determined by the Investigator including hematocrit > 48%, or >50% for patients living at high altitude if not receiving testosterone treatment, or hematocrit > 52% if already receiving testosterone treatment.
  9. Has a history of deep venous thrombosis or pulmonary embolism
  10. Has evidence of a clinically significant 12-lead electrocardiogram (ECG) abnormality at Screening, as determined by the Investigator
  11. Has a current suspected or diagnosed (and unresected) tumor of the pituitary gland with the exception of Rathke's cleft cyst or a stable non-functioning pituitary microadenoma (ie, lesion size < 10 mm that has not increased in size over a period of 1 year on repeat imaging), as determined by the Investigator
  12. Has an active malignancy or has received treatment for a malignancy within the 12 months before Screening
  13. Is currently receiving antipsychotic medication for any reason or is currently receiving selective serotonin reuptake inhibitor (SSRI) medication for depression
  14. Is receiving any other medication or has a condition that would preclude safe participation in the study or confound the evaluation of safety, as determined by the Investigator
  15. Has a history of suicidal behavior (i.e., actions intended to harm oneself), suicidal ideation (i.e., thoughts and plans about suicide), or suicide attempts
  16. Has any affirmative responses on the Columbia Suicide Severity Rating Scale (C-SSRS) questionnaire to questions #3, #4, or #5 or any affirmative response to questions #1 or #2 within the past 12 months on the suicide ideation questions (first section) OR any affirmative response on the suicidal behavior questions (the second section).
  17. Is currently taking supraphysiologic doses of systemic glucocorticoids for more than 3 weeks, except for intermittent short courses of exogenous glucocorticoids as needed for the treatment of asthma
  18. Has received any other investigational compound within 1 month prior to screening or 5 half-lives of the investigational product (whichever is longer)
  19. Has received gonadotropin-releasing hormone (GnRH) agonists, aromatase inhibitors, androgens (eg, dehydroepiandrosterone [DHEA]), anabolic steroids such as oxandrolone, or other sex steroids within 12 months before the Screening visit, or would require these treatments at any time during the study.
  20. Receiving cytochrome P450 (CYP) 3A4 or P glycoprotein (P-gp) inhibitors/inducers or medications that are metabolized by CYP3A4 or P-gp within 30 days of enrolment.
  21. Has a history of alcohol or drug abuse
  22. Has a history or clinical manifestations of significant renal, hepatic, cardiovascular, metabolic, neurologic, psychiatric, or other conditions that would preclude participation in the study, as determined by the Investigator
  23. Has chronic urticaria or dermatographism
  24. Has 25-hydroxy-vitamin D blood level < 20 ng/mL. Participants with initial vitamin D blood measurement < 20 ng/mL may enroll while they receive supplementation per clinical practice

Studienplan

Dieser Abschnitt enthält Einzelheiten zum Studienplan, einschließlich des Studiendesigns und der Messung der Studieninhalte.

Wie ist die Studie aufgebaut?

Designdetails

  • Hauptzweck: Behandlung
  • Zuteilung: N / A
  • Interventionsmodell: Einzelgruppenzuweisung
  • Maskierung: Keine (Offenes Etikett)

Waffen und Interventionen

Teilnehmergruppe / Arm
Intervention / Behandlung
Experimental: Participants

XYOSTED Injection (Testosterone enanthate) 25 mg / 0.5 mL, 50 mg / 0.5 mL, 75 mg / 0.5 mL, 100 mg / 0.5 mL

XYOSTED 25 mg / 0.5 mL; XYOSTED 50 mg / 0.5 mL; XYOSTED 75 mg / 0.5 mL; XYOSTED 100 mg / 0.5 mL

Andere Namen:
  • XYOSTED-Injektion

Was misst die Studie?

Primäre Ergebnismessungen

Ergebnis Maßnahme
Zeitfenster
Anstieg des Testosterons, bewertet anhand von PK-Parametern
Zeitfenster: Von der Einschreibung bis zur Abschlussbewertung in Woche 53
Von der Einschreibung bis zur Abschlussbewertung in Woche 53

Sekundäre Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
Percentage of participants demonstrating either progression through Tanner Stages of puberty or attainment of Tanner Stage 5 by the end of the study
Zeitfenster: End of Study Assessment at Week 53

Evaluated through clinical//physical examination

End of Study Assessment at Week 53
• Percentage of patients that had an increase in stretched penile length
Zeitfenster: End of Study Assessment at Week 53

Evaluated through clinical//physical examination

End of Study Assessment at Week 53
Change from Screening or Baseline in DEXA bone density for total body less head (TBLH) and PA spine
Zeitfenster: End of Study Assessment at Week 53

Evaluated through DEXA scan using age-appropriate software

End of Study Assessment at Week 53
Change from Screening or Baseline in body composition by DEXA scan
Zeitfenster: End of Study Assessment at Week 53

Evaluated through DEXA scan using age-appropriate software

End of Study Assessment at Week 53
Change from Screening or Baseline in bone age as determined by X-ray
Zeitfenster: End of Study Assessment at Week 53

Evaluated through X-ray using central readers

End of Study Assessment at Week 53
Change from Screening or Baseline in BMI-for-age percentile
Zeitfenster: End of Study Assessment at Week 53

Evaluated through clinical//physical examination

End of Study Assessment at Week 53
• Change from Screening or Baseline in Height Velocity (HV)
Zeitfenster: End of Study Assessment at Week 53

Evaluated through clinical//physical examination

End of Study Assessment at Week 53

Andere Ergebnismessungen

Ergebnis Maßnahme
Maßnahmenbeschreibung
Zeitfenster
PK endpoints
Zeitfenster: End of Study Assessment at Week 53

Total Testosterone concentration

End of Study Assessment at Week 53
Evaluation of Safety Endpoints including Treatment-Emergent Adverse Events
Zeitfenster: End of Study Assessment at Week 53

Frequency and Severity of TEAEs

End of Study Assessment at Week 53

Mitarbeiter und Ermittler

Hier finden Sie Personen und Organisationen, die an dieser Studie beteiligt sind.

Sponsor

Studienaufzeichnungsdaten

Diese Daten verfolgen den Fortschritt der Übermittlung von Studienaufzeichnungen und zusammenfassenden Ergebnissen an ClinicalTrials.gov. Studienaufzeichnungen und gemeldete Ergebnisse werden von der National Library of Medicine (NLM) überprüft, um sicherzustellen, dass sie bestimmten Qualitätskontrollstandards entsprechen, bevor sie auf der öffentlichen Website veröffentlicht werden.

Haupttermine studieren

Studienbeginn (Tatsächlich)

7. März 2025

Primärer Abschluss (Geschätzt)

1. März 2028

Studienabschluss (Geschätzt)

1. März 2030

Studienanmeldedaten

Zuerst eingereicht

6. November 2024

Zuerst eingereicht, das die QC-Kriterien erfüllt hat

13. November 2024

Zuerst gepostet (Tatsächlich)

14. November 2024

Studienaufzeichnungsaktualisierungen

Letztes Update gepostet (Tatsächlich)

6. November 2026

Letztes eingereichtes Update, das die QC-Kriterien erfüllt

5. November 2026

Zuletzt verifiziert

1. November 2026

Mehr Informationen

Begriffe im Zusammenhang mit dieser Studie

Andere Studien-ID-Nummern

  • ATRS QST-19-007

Arzneimittel- und Geräteinformationen, Studienunterlagen

Studiert ein von der US-amerikanischen FDA reguliertes Arzneimittelprodukt

Ja

Studiert ein von der US-amerikanischen FDA reguliertes Geräteprodukt

Ja

Diese Informationen wurden ohne Änderungen direkt von der Website clinicaltrials.gov abgerufen. Wenn Sie Ihre Studiendaten ändern, entfernen oder aktualisieren möchten, wenden Sie sich bitte an register@clinicaltrials.gov. Sobald eine Änderung auf clinicaltrials.gov implementiert wird, wird diese automatisch auch auf unserer Website aktualisiert .