- ICH GCP
- 미국 임상 시험 레지스트리
- 임상시험 NCT07691827
Maternal Inheritance of a Pathogenic MT-ND1 Mutation Causes Mitochondrial Dysfunction and Spermatogenic Failure in Men (MTND1-INA/C)
Study Protocol Used in Maternal Inheritance of a Pathogenic MT-ND1 Mutation Causes Mitochondrial Dysfunction and Spermatogenic Failure in Men
Idiopathic non-obstructive azoospermia and cryptozoospermia are severe forms of male infertility in which sperm production is absent or extremely low and the cause is often unknown. This retrospective observational study examined whether mitochondrial DNA variants, particularly the MT-ND1 m.3700G>A variant, are associated with impaired sperm production in Chinese men.
Existing clinical records and available biospecimens from affected men, eligible family members, and fertile controls were analyzed to assess familial inheritance patterns, the frequency of the variant, and its association with infertility phenotypes. No study-related treatment or intervention was provided to human participants.
연구 개요
상태
연구 유형
등록 (추정된)
연락처 및 위치
연구 연락처
- 이름: Chen
- 전화번호: 86-15918822529
- 이메일: 15918822529@163.com
연구 장소
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Guangdong
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Guangzhou, Guangdong, 중국, 510150
- 모병
- The Third Affiliated Hospital of Guangzhou Medical University
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연락하다:
- Chen Liao
- 전화번호: 86+15918822529
- 이메일: 15918822529@163.com
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참여기준
자격 기준
공부할 수 있는 나이
- 어린이
- 성인
- 고령자
건강한 자원 봉사자를 받아들입니다
샘플링 방법
연구 인구
설명
Inclusion Criteria:
- Men with idiopathic non-obstructive azoospermia or cryptozoospermia.
- Male patients undergoing a clinically indicated testicular biopsy, testicular sperm aspiration (TESA), microdissection testicular sperm extraction (micro-TESE), or a related clinical procedure, when residual clinical specimens are available.
- Comparison participants with normal spermatogenesis, including men with obstructive azoospermia and men undergoing sperm retrieval or testicular tissue evaluation for clinical reasons.
- Selected relatives and spouses of enrolled patients, when needed for genetic segregation analysis and determination of variant origin.
Exclusion Criteria:
- For the idiopathic non-obstructive azoospermia or cryptozoospermia cohort, azoospermia with an established alternative cause, including chromosomal abnormalities, Y-chromosome microdeletions, testicular tumors, severe trauma, prior radiotherapy or chemotherapy, or confirmed infection.
- Incomplete clinical data or inability to obtain informed consent.
- Biospecimens that do not meet quality requirements for the planned analyses.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
코호트 및 개입
그룹/코호트 |
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INA/C Patients
Men with idiopathic non-obstructive azoospermia or cryptozoospermia who were included in the retrospective clinical and genetic analyses.
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Fertile Controls
Fertile men who were included as comparison participants for mitochondrial DNA variant analyses.
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Family Members
Affected participants and available relatives who were included for pedigree, segregation, and maternal inheritance analyses of mitochondrial DNA variants.
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연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Detection and Familial Segregation of the MT-ND1 m.3700G>A Variant
기간: Baseline (single genetic testing assessment at enrollment)
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Detection of the MT-ND1 m.3700G>A mitochondrial DNA variant by sequencing in available biological samples, with assessment of its distribution and maternal segregation among affected male family members, unaffected relatives, unrelated patients with idiopathic non-obstructive azoospermia or cryptozoospermia, and fertile controls.
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Baseline (single genetic testing assessment at enrollment)
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2차 결과 측정
결과 측정 |
측정값 설명 |
기간 |
|---|---|---|
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Clinical Classification of Idiopathic Non-obstructive Azoospermia or Cryptozoospermia
기간: Baseline (single clinical classification based on pre-enrollment clinical records)
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Affected participants were classified as having idiopathic non-obstructive azoospermia or cryptozoospermia according to the clinical diagnosis recorded after routine semen analyses and standard clinical evaluation.
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Baseline (single clinical classification based on pre-enrollment clinical records)
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (실제)
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
- 82471639
개별 참가자 데이터(IPD) 계획
개별 참가자 데이터(IPD)를 공유할 계획입니까?
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. .