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호르몬 수용체 양성 초기 유방암을 가진 폐경 후 여성에서 주사용 레트로졸 SIE와 경구용 레트로졸의 정상 상태 생체 이용률을 비교하는 연구 (SIE-1)

2026년 10월 8일 업데이트: Rovi Pharmaceuticals Laboratories

내분비 치료를 받는 호르몬 수용체 양성 조기 유방암의 폐경 후 여성을 대상으로 분기별 Letrozole SIE와 1일 1회 2.5mg 경구 Letrozole(Femara®)의 안정 상태 비교 생체이용률을 평가하는 개방형 단일 순서 연구. (SIE-1)

The study aims to compare the amount of the drug letrozole that gets into the bloodstream after multiple doses of the quarterly injection Letrozole SIE, versus multiple doses of the standard oral daily tablet of letrozole (Femara®), in women who have gone through menopause and have received treatment for hormone receptor-positive early breast cancer. Participants must have completed at least five years of hormone therapy with at least two of those years with letrozole before starting their participation in the study. Women who have completed four years of hormone therapy are also eligible if their doctor considers them at low risk of cancer returning.

연구 개요

상태

모병

정황

개입 / 치료

상세 설명

The primary objective of the study is to evaluate the steady-state comparative bioavailability of quarterly injectable Letrozole SIE compared to United States (US)-sourced oral Femara® in the US-sourced arm and of quarterly injectable Letrozole SIE compared to European Union (EU)-sourced oral Femara® in the EU-sourced arm, in post-menopausal women treated with endocrine therapy for hormone-receptor positive (HR+) early breast cancer (EBC). The study also aims to characterize the elimination phase of Letrozole SIE after multiple doses.

The study consists of four periods: Screening, Treatment Period 1 (TP1), Treatment Period 2 (TP2) and Extension Period. After the Screening Period, participants will be randomized to two different arms: US-sourced oral Femara® or EU-sourced oral Femara® for 14 days to achieve the steady-state concentrations of letrozole in TP1. After receiving the latest oral letrozole dose, participants from both arms will start TP2. In TP2, quarterly injectable Letrozole SIE will be administered to achieve steady-state. After TP2, a subset of participants (up to 60 participants, regardless of which study arm they belong to) will continue in the study for the assessment of the elimination phase of Letrozole SIE after multiple doses during the Extension Period.

It is estimated that approximately 120 subjects should be randomized.

연구 유형

중재적

등록 (추정된)

120

단계

  • 1단계

연락처 및 위치

이 섹션에서는 연구를 수행하는 사람들의 연락처 정보와 이 연구가 수행되는 장소에 대한 정보를 제공합니다.

연구 연락처

연구 장소

    • California
      • Beverly Hills, California, 미국, 90212
        • 모병
        • Precision NextGen Oncology and Research Center (Investigational Site number USA-001)
    • Florida
      • Margate, Florida, 미국, 33063
        • 모병
        • D&H National Research Centers INC (Investigational Site number USA-002)
      • Port Orange, Florida, 미국, 32127
        • 모병
        • United Medical Research (Investigational Site number USA-005)
      • Belgrade, 세르비아, 11000
        • 모병
        • Investigational Site number SRB-004
      • Belgrade, 세르비아, 11080
        • 모병
        • Investigational Site number SRB-002
      • Kamenitz, 세르비아, 21204
        • 모병
        • Investigational Site number SRB-001
      • Kragujevac, 세르비아, 34000
        • 모병
        • Investigational Site number SRB-003
      • Niš, 세르비아, 18000
        • 모병
        • Investigational Site number SRB-005
      • Alcorcón, 스페인, 28922
        • 모병
        • Hospital Universitario Fundación Alcorcón (Investigational Site number ESP-015)
      • Barcelona, 스페인, 08023
        • 모병
        • NEXT Oncology. Phase I Unit / IOB - Hospital Quironsalud Barcelona (Investigational Site number ESP-002)
      • Granada, 스페인, 18014
        • 모병
        • Hospital Universitario Virgen de las Nieves (Investigational Site number ESP-011)
      • Jaén, 스페인, 23007
        • 모병
        • Hospital Universitario de Jaén (HUJ) (Investigational Site number ESP-005)
      • León, 스페인, 24071
        • 모병
        • Complejo Asistencial Universitario de León - Hospital de León (Investigational Site number ESP-013)
      • Lleida, 스페인, 25198
        • 모병
        • Hospital Universitario Arnau de Vilanova de Lleida (Investigational Site number ESP-003)
      • Manresa, 스페인, 08243
        • 모병
        • Althaia Xarxa Assistencial Universitària de Manresa F.P (Investigational Site number ESP-012)
      • Murcia, 스페인, 30120
        • 모병
        • Hospital Clínico Universitario Virgen de la Arrixaca (Investigational Site number ESP-009)
      • Málaga, 스페인, 29004
        • 모병
        • Hospital Quirónsalud Málaga (Investigational Site number ESP-001)
      • Pozuelo de Alarcón, 스페인, 28223
        • 모병
        • NEXT Oncology Phase I Unit - Hospital Universitario Quironsalud Madrid (Investigational Site number ESP-008)
      • Reus, 스페인, 43204
        • 모병
        • Hospital Universitari Sant Joan de Reus (Investigational Site number ESP-004)
      • Sabadell, 스페인, 08208
        • 모병
        • Consorci Corporació Sanitària Parc Taulí - Hospital de Sabadell (Investigational Site number ESP-006)
      • Santiago de Compostela, 스페인, 15705
        • 모병
        • Hospital Clinico Universitario Santiago de Compostela (Investigational Site number ESP-007)

참여기준

연구원은 적격성 기준이라는 특정 설명에 맞는 사람을 찾습니다. 이러한 기준의 몇 가지 예는 개인의 일반적인 건강 상태 또는 이전 치료입니다.

자격 기준

공부할 수 있는 나이

18년 (성인, 고령자)

건강한 자원 봉사자를 받아들입니다

아니

연구 대상 성별

여성

설명

Inclusion Criteria:

  • Women with weight of ≥50 kg and a Body Mass Index (BMI) ≥19 kg/m2 and ≤39 kg/m2
  • Postmenopausal women.
  • Women with confirmed diagnosis of HR+/HER2- or HR+/HER2+ early stage breast cancer who have completed at least 5 years of endocrine therapy, at least 2 years of which were with letrozole. Participants at a low risk of relapse, as assessed by the investigator, can also be eligible after completing 4 years of adjuvant endocrine therapy, at least 2 of which were with letrozole.
  • Women in good health.
  • Women who have undergone breast imaging per applicable guidelines (e.g., mammogram) within the last 12 months with no evidence of malignancy (documentation required), and if not done, must be willing to have 1 performed prior to baseline.

Exclusion Criteria:

  • Presence of an uncontrolled, unstable, clinically significant medical condition.
  • Have used estrogen or progesterone systemic or topical therapy, oral contraceptives, androgens, LH-releasing hormone analogs, prolactin inhibitors, or antiandrogens within 3 months prior to screening.
  • Use of inducers or inhibitors of CYP3A4 and CYP2A6.
  • Diagnosed with osteoporosis.
  • Preexisting cardiovascular disease
  • Positive result for hepatitis B surface antigen, hepatitis B core antibody, hepatitis C antibody, or HIV antibodies.

공부 계획

이 섹션에서는 연구 설계 방법과 연구가 측정하는 내용을 포함하여 연구 계획에 대한 세부 정보를 제공합니다.

연구는 어떻게 설계됩니까?

디자인 세부사항

  • 주 목적: 치료
  • 할당: 무작위
  • 중재 모델: 병렬 할당
  • 마스킹: 없음(오픈 라벨)

무기와 개입

참가자 그룹 / 팔
개입 / 치료
실험적: 미국산 경구용 페마라®

US-sourced Femara® 2.5 mg/day oral for 14 days (treatment period 1) + quarterly injectable Letrozole SIE (treatment period 2)

실험적: EU-sourced oral Femara®

EU-sourced oral Femara® 2.5 mg/day for 14 days (treatment period 1) + quarterly injectable Letrozole SIE (treatment period 2)

연구는 무엇을 측정합니까?

주요 결과 측정

결과 측정
측정값 설명
기간
Area under the concentration-time curve within a dosing interval at Steady-State (SS AUCtau)
기간: After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® on Day 14 TP1

Individual and mean area under the concentration-time curve within a dosing interval at steady-state

After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® on Day 14 TP1

2차 결과 측정

결과 측정
측정값 설명
기간
Adverse Events
기간: From the time of obtaining signed informed consent until the final follow-up visit on Day 281 (or Day 421 for the subset of participants in the Extension Period)

Incidence of adverse events (type, severity, seriousness, and relationship to study drug), including the incidence of treatment-emergent adverse events (TEAEs), the incidence of serious TEAEs, and the incidence of TEAEs leading to treatment discontinuation.

From the time of obtaining signed informed consent until the final follow-up visit on Day 281 (or Day 421 for the subset of participants in the Extension Period)
Injection site reactions
기간: At pre-dose and 1 hour after each Letrozole SIE administration in TP2

Incidence of injection site reactions

At pre-dose and 1 hour after each Letrozole SIE administration in TP2
Injection-related pain score
기간: From baseline TP2 to the follow-up visit on Day 281

Changes in injection-related pain score by numeric rating scale (NRS). The NRS evaluates the intensity of injection-related pain experienced at the time of Letrozole SIE administration. It is scored from 0 to 10 (0 meaning no pain and 10 meaning the worst possible pain).

From baseline TP2 to the follow-up visit on Day 281
Bone mineral density (BMD) by dual energy x-ray absorptiometry (DXA)
기간: From screening to Day 281 TP2

Changes in bone mineral density BMD by DXA

From screening to Day 281 TP2
Average plasma drug concentration during a dosing interval at Steady-State (SS Cave)
기간: After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Individual and mean steady-state average plasma drug concentration during a dosing interval

After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Minimum drug concentration at steady-state (Cmin ss)
기간: After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Minimum drug concentration at steady-state

After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Maximum plasma concentration at steady-state (Cmax ss)
기간: After multiple doses of Letrozole SIE at Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Maximum plasma concentration at steady-state

After multiple doses of Letrozole SIE at Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Letrozole blood level percent fluctuation
기간: After multiple doses of Letrozole SIE at Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Individual and mean letrozole blood percent fluctuation

After multiple doses of Letrozole SIE at Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Time to peak observed concentration (Tmax)
기간: After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Time to peak observed concentration

After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Steady-State (SS)
기간: After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1

Characterization of the steady-state

After multiple doses of Letrozole SIE until Day 281 TP2 and after multiple doses of US-sourced oral Femara® or EU-sourced oral Femara® at Day 14 TP1
Terminal rate constant (λz)
기간: After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period

Individual and mean Terminal rate constant (λz) after multiple doses of Letrozole SIE in the subset of participants in the Extension Period

After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period
Terminal half-life (t1/2)
기간: After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period

Individual and mean Terminal half-life after multiple doses of Letrozole SIE in the subset of participants in the Extension Period

After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period
Area under the curve extrapolated to infinity (AUC∞)
기간: After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period

Individual and mean Area under the curve extrapolated to infinity after multiple doses of Letrozole SIE in the subset of participants in the Extension Period

After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period
Area under the curve that is extrapolated (AUCextrap)
기간: After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period

Percentage of area under the curve that is extrapolated after multiple doses of Letrozole SIE in the subset of participants in the Extension Period

After multiple doses of Letrozole SIE in TP2 until Day 421 in the Extension Period

기타 결과 측정

결과 측정
측정값 설명
기간
Hormone supression
기간: From screening to the final follow-up visit on Day 281 (or Day 421 for the subset of participants in the Extension Period)

Analysis of letrozole exposure and hormone suppression measuring the sex hormone estrone (E1), sulfate estrone (SE1), and estradiol (E2) plasma levels.

From screening to the final follow-up visit on Day 281 (or Day 421 for the subset of participants in the Extension Period)
CYP2A6 genotyping
기간: From screening to final follow-up visit Day 281 (or Day 421 for the subset of participants in the Extension Period)

Proportion of participants in each CYP2A6 metabolizer phenotype category (normal, intermediate, slow)

From screening to final follow-up visit Day 281 (or Day 421 for the subset of participants in the Extension Period)

공동 작업자 및 조사자

여기에서 이 연구와 관련된 사람과 조직을 찾을 수 있습니다.

스폰서

연구 기록 날짜

이 날짜는 ClinicalTrials.gov에 대한 연구 기록 및 요약 결과 제출의 진행 상황을 추적합니다. 연구 기록 및 보고된 결과는 공개 웹사이트에 게시되기 전에 특정 품질 관리 기준을 충족하는지 확인하기 위해 국립 의학 도서관(NLM)에서 검토합니다.

연구 주요 날짜

연구 시작 (실제)

2026년 6월 8일

기본 완료 (추정된)

2028년 5월 1일

연구 완료 (추정된)

2028년 10월 1일

연구 등록 날짜

최초 제출

2026년 1월 22일

QC 기준을 충족하는 최초 제출

2026년 2월 3일

처음 게시됨 (실제)

2026년 2월 10일

연구 기록 업데이트

마지막 업데이트 게시됨 (실제)

2026년 10월 9일

QC 기준을 충족하는 마지막 업데이트 제출

2026년 10월 8일

마지막으로 확인됨

2026년 10월 1일

추가 정보

이 연구와 관련된 용어

기타 연구 ID 번호

  • ROV-SIE-2025-01
  • 2025-523269-31-00 (씨티스)
  • 2025 (미국 NIH 보조금/계약)

약물 및 장치 정보, 연구 문서

미국 FDA 규제 의약품 연구

예

미국 FDA 규제 기기 제품 연구

아니

이 정보는 변경 없이 clinicaltrials.gov 웹사이트에서 직접 가져온 것입니다. 귀하의 연구 세부 정보를 변경, 제거 또는 업데이트하도록 요청하는 경우 register@clinicaltrials.gov. 문의하십시오. 변경 사항이 clinicaltrials.gov에 구현되는 즉시 저희 웹사이트에도 자동으로 업데이트됩니다. .