- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07698561
Linzagolix in Adenomyosis and Recurrent Implantation Failure (LINZA-RIF)
Efficacy of Linzagolix 200 mg for 3 to 6 Months Prior to Embryo Transfer in Patients With Adenomyosis and Recurrent Implantation Failure: A Prospective Case Series
Adenomyosis is associated with impaired endometrial receptivity and reduced implantation rates in assisted reproduction, even when using high-quality embryos. Linzagolix (Yselty, 200 mg) is an oral GnRH receptor antagonist approved for uterine fibroids with a favourable tolerability profile and rapid elimination half-life (18-20 hours) compared to GnRH agonists.
This prospective case series evaluates the efficacy of linzagolix 200 mg administered for 3 to 6 months prior to embryo transfer in patients with confirmed adenomyosis and recurrent implantation failure (RIF), defined as ≥2 failed transfers with high-quality blastocysts (≥BB Gardner in oocyte donation, or PGT-A confirmed euploid in autologous cycles).
The primary endpoint is the live birth rate (LBR) per embryo transfer. Secondary endpoints include clinical pregnancy rate, miscarriage rate, morphological response of adenomyosis (uterine volume and junctional zone [JZ] thickness assessed by standardised transvaginal ultrasound), and tolerability profile. The study also explores the optimal treatment duration (3 vs 6 months) as a sub-analysis based on morphological response at the month-3 visit.
The study is conducted at three centres of Vida Fertility Institute (Madrid, Alicante and San Sebastián, Spain). Sample size: n=35 patients. Study duration: 24 months.
연구 개요
상세 설명
BACKGROUND:
Current standard of care for adenomyosis prior to embryo transfer in RIF patients consists of GnRH agonist therapy (triptorelin depot) for 1-3 months, with or without letrozole. This approach requires intramuscular administration, is associated with intense vasomotor symptoms, and has a prolonged pharmacological residual effect (4-6 weeks) that complicates cycle planning. No prospective study has evaluated linzagolix in this specific clinical scenario.
DESIGN:
Prospective before-after case series. Each patient serves as her own historical control (prior failed transfers under standard care vs outcome after linzagolix treatment). Treatment duration (3 or 6 months) is determined by morphological response at the month-3 ultrasound visit. Endometrial preparation is initiated 7 days after the last dose of linzagolix.
ULTRASOUND PROTOCOL:
Standardised transvaginal ultrasound measurements at each visit: uterine volume (L x AP x T x 0.523 cm3), junctional zone maximum (mm), junctional zone minimum (mm) and junctional zone difference (mm). All measurements performed in strict sagittal plane with ≥7 MHz transvaginal probe.
VASOMOTOR SYMPTOM MANAGEMENT:
Standardised non-estrogenic supplementation protocol (Cimicifuga racemosa 20 mg, Remifemin) if EVA score ≥4 for hot flushes or insomnia. Suspended simultaneously with the last dose of linzagolix.
REGULATORY FRAMEWORK:
Observational study with medicinal products (EOMF) under Spanish Royal Decree 957/2020. Use of linzagolix in this indication is off-label. Study approved by CEIm del Hospital Clinico San Carlos, Madrid.
연구 유형
등록 (추정된)
연락처 및 위치
연구 연락처
- 이름: Elena De Santiago Romero, MD
- 전화번호: +34 679211353
- 이메일: santiago.e@vidafertility.com
연구 연락처 백업
- 이름: Irene Hervas, PhD
- 전화번호: +34 697766609
- 이메일: hervas.i@vidafertility.com
연구 장소
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Alicante
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Alicante, Alicante, 스페인, 03008
- Vida Fertility Alicante
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연락하다:
- Sergio Rogel, MD
- 전화번호: +34 669657631
- 이메일: rogel.s@vidafertility.com
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연락하다:
- Alejandra García Villalba, MD
- 전화번호: +34 605920083
- 이메일: garciavillalba.a@vidafertility.com
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Gipuzkoa
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San Sebastián, Gipuzkoa, 스페인, 20018
- Vida Fertility Donostia
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연락하다:
- Estefanía Rodriguez, MD
- 전화번호: +34 653733284
- 이메일: rodriguez.e@vidafertility.com
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Madrid
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Madrid, Madrid, 스페인, 28043
- Vida Fertility Institute Madrid
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연락하다:
- Elena De Santiago Romero, MD
- 전화번호: +34 679211353
- 이메일: santiago.e@vidafertility.com
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연락하다:
- Irene Hervas, PhD
- 전화번호: +34 697766609
- 이메일: hervas.i@vidafertility.com
-
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참여기준
자격 기준
공부할 수 있는 나이
- 성인
건강한 자원 봉사자를 받아들입니다
샘플링 방법
연구 인구
설명
Inclusion Criteria:
- Age 18 to 50 years
- Confirmed adenomyosis by transvaginal ultrasound or MRI
- Recurrent implantation failure defined as 2 or more failed embryo transfers with high-quality blastocysts: oocyte donation recipients (blastocyst grade BB or above, Gardner classification) OR autologous IVF cycles with PGT-A confirmed euploid blastocysts
- Normal uterine cavity with no submucosal distortion
- At least 1 suitable embryo available for transfer (blastocyst grade BB or above, or PGT-A euploid)
- Signed written informed consent including explicit acknowledgement of off-label use of linzagolix
Exclusion Criteria:
- Untreated hydrosalpinx
- Untreated stage III-IV endometriosis
- Major uterine anomaly (uterine septum, bicornuate uterus)
- Known contraindication to linzagolix including known hepatopathy
- Prior treatment with linzagolix
- GnRH analogue treatment within 6 months prior to enrolment
- BMI greater than 35 kg/m2
- Prior failed transfers exclusively with embryos below the quality threshold (below BB grade, non-euploid)
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
코호트 및 개입
그룹/코호트 |
개입 / 치료 |
|---|---|
|
Linzagolix 200 mg - Adenomyosis and RIF
Patients with confirmed adenomyosis and recurrent implantation failure (2 or more failed embryo transfers with high-quality blastocysts: grade BB or above in oocyte donation cycles, or PGT-A confirmed euploid in autologous cycles) receiving linzagolix 200 mg orally once daily for 3 to 6 months prior to embryo transfer.
Treatment duration is determined by morphological response assessed at the month-3 transvaginal ultrasound visit.
Endometrial preparation is initiated 7 days after the last dose of linzagolix.
|
Linzagolix 200 mg orally once daily for a minimum of 3 months, extendable to 6 months based on morphological response (uterine volume and junctional zone assessment) at the month-3 transvaginal ultrasound visit.
Off-label use for adenomyosis prior to embryo transfer.
다른 이름들:
|
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Live Birth Rate (LBR) per embryo transfer
기간: Up to 12 months after embryo transfer
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Proportion of embryo transfers resulting in the birth of a live neonate at or beyond 24 weeks of gestation.
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Up to 12 months after embryo transfer
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
|
Clinical Pregnancy Rate
기간: 6-7 weeks after embryo transfer
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Proportion of embryo transfers resulting in the presence of an intrauterine gestational sac with fetal heartbeat on transvaginal ultrasound at 6-7 weeks of gestation.
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6-7 weeks after embryo transfer
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Miscarriage Rate
기간: Up to 22 weeks of gestation
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Proportion of clinical pregnancies ending in spontaneous pregnancy loss before 22 weeks of gestation.
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Up to 22 weeks of gestation
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Change in Uterine Volume
기간: Baseline, month 3, month 6 (if applicable) and pre-transfer (approximately 3-7 months from baseline)
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Change in uterine volume (cm3) measured by transvaginal ultrasound using the ellipsoid formula (L x AP x T x 0.523) from baseline to post-treatment.
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Baseline, month 3, month 6 (if applicable) and pre-transfer (approximately 3-7 months from baseline)
|
|
Change in Junctional Zone Maximum Thickness
기간: Baseline, month 3, month 6 (if applicable) and pre-transfer (approximately 3-7 months from baseline)
|
Change in junctional zone (JZ) maximum thickness (mm) measured by standardised transvaginal ultrasound in strict sagittal plane from baseline to post-treatment.
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Baseline, month 3, month 6 (if applicable) and pre-transfer (approximately 3-7 months from baseline)
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Incidence of Vasomotor Adverse Events
기간: Monthly during treatment period (up to 6 months)
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Proportion of patients reporting hot flushes, insomnia or other vasomotor symptoms, assessed using a visual analogue scale (EVA 0-10) at each visit.
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Monthly during treatment period (up to 6 months)
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
추가 관련 MeSH 약관
기타 연구 ID 번호
- VFI-LNZG-2025
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
IPD 계획 설명
약물 및 장치 정보, 연구 문서
미국 FDA 규제 의약품 연구
미국 FDA 규제 기기 제품 연구
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. .
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