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性腺機能低下症の男性青年におけるテストステロン補充に対する XYOSTED® の安全性、PK、および有効性に関する 52 週間の研究

2026年11月5日 更新者:Halozyme Therapeutics

原発性または続発性性腺機能低下症による内因性テストステロンの欠乏または欠如を持つ男性青年におけるテストステロン補充に対するXYOSTED®の安全性、PK、および有効性を評価するための非盲検、複数回投与、52週間の研究

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.

調査の概要

状態

募集

条件

介入・治療

詳細な説明

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.

研究の種類

介入

入学 (推定)

100

段階

  • フェーズ 3

連絡先と場所

このセクションには、調査を実施する担当者の連絡先の詳細と、この調査が実施されている場所に関する情報が記載されています。

研究連絡先

  • 名前:Director Clinical Operations, MPH, CPM
  • 電話番号:609-331-1670
  • メール:jbitsura@halozyme.com

研究連絡先のバックアップ

  • 名前:Chief Medical Officer, MD, PhD
  • 電話番号:858-344-9400
  • メール:ctheuer@halozyme.com

研究場所

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

参加基準

研究者は、適格基準と呼ばれる特定の説明に適合する人を探します。これらの基準のいくつかの例は、人の一般的な健康状態または以前の治療です。

適格基準

就学可能な年齢

12年~17年 (子)

健康ボランティアの受け入れ

いいえ

受講資格のある性別

男

説明

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

研究計画

このセクションでは、研究がどのように設計され、研究が何を測定しているかなど、研究計画の詳細を提供します。

研究はどのように設計されていますか?

デザインの詳細

  • 主な目的:処理
  • 割り当て:なし
  • 介入モデル:単一グループの割り当て
  • マスキング:なし(オープンラベル)

武器と介入

参加者グループ / アーム
介入・治療
実験的: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

他の名前:
  • XYOSTEDインジェクション

この研究は何を測定していますか?

主要な結果の測定

結果測定
時間枠
PKパラメーターを使用して評価されたテストステロンの増加
時間枠:登録から 53 週目の学習終了評価まで
登録から 53 週目の学習終了評価まで

二次結果の測定

結果測定
メジャーの説明
時間枠
Percentage of participants demonstrating either progression through Tanner Stages of puberty or attainment of Tanner Stage 5 by the end of the study
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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
時間枠: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)
時間枠:End of Study Assessment at Week 53

Evaluated through clinical//physical examination

End of Study Assessment at Week 53

その他の成果指標

結果測定
メジャーの説明
時間枠
PK endpoints
時間枠: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
時間枠:End of Study Assessment at Week 53

Frequency and Severity of TEAEs

End of Study Assessment at Week 53

協力者と研究者

ここでは、この調査に関係する人々や組織を見つけることができます。

スポンサー

研究記録日

これらの日付は、ClinicalTrials.gov への研究記録と要約結果の提出の進捗状況を追跡します。研究記録と報告された結果は、国立医学図書館 (NLM) によって審査され、公開 Web サイトに掲載される前に、特定の品質管理基準を満たしていることが確認されます。

主要日程の研究

研究開始 (実際)

2025年3月7日

一次修了 (推定)

2028年3月1日

研究の完了 (推定)

2030年3月1日

試験登録日

最初に提出

2024年11月6日

QC基準を満たした最初の提出物

2024年11月13日

最初の投稿 (実際)

2024年11月14日

学習記録の更新

投稿された最後の更新 (実際)

2026年11月6日

QC基準を満たした最後の更新が送信されました

2026年11月5日

最終確認日

2026年11月1日

詳しくは

本研究に関する用語

その他の研究ID番号

  • ATRS QST-19-007

医薬品およびデバイス情報、研究文書

米国FDA規制医薬品の研究

はい

米国FDA規制機器製品の研究

はい

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