Research across borders

Worldwide Study Finder

Where are peptides being studied? Explore registered human studies by product, phase, condition and location — from early development through Phase 4, alongside studies where phase does not apply.

Searchable results come from ClinicalTrials.gov and include international sites. For broader coverage, use the worldwide and regional registries below. No single registry captures every study.

Find studies Explore world registries Peptide directory

Find a study

Enter a peptide, product, condition or location. Try generic names, brand names and development codes separately. Results are registry search matches, not automatically verified links to a WPF peptide record.

Search terms are sent to ClinicalTrials.gov and appear in the page URL. Do not enter personal or medical identifying information. Registry records are served with up to a one-hour cache; registry updates themselves can lag real-world changes.

Registry search results

Matching records; showing 20 on this page, newest registry updates first. Search checked 2026-11-08 18:08 UTC. Counts are registry matches, not unique peptides or a worldwide total.

Phase not reported / not applicableRecruitingOBSERVATIONAL

Endometrial Peristalsis and Pregnancy Outcomes in Hormone Replacement Therapy (HRT) - Frozen Embryo Transfer (FET) Cycles

ClinicalTrials.gov · NCT07675213 · Registry updated: 2026-07-09

Condition / research focus: Infertility; Endometrial Peristalsis; Uterine Contraction; Endometrial Waves; Frozen Embryo Transfer (FET); Uterine Peristalsis; Hormone Replacement Therapy (HRT)
Sponsor: Mỹ Đức Hospital
Countries with listed sites: Vietnam
Registry dates and results: Start: 2026-06-30. Completion: 2027-12-01 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Endometrial peristalsis and hormone measurements (other)

Where the study takes place — 1 listed sites

Site status can differ from overall study status. This list includes all reported sites, even when your search specifies one location. Confirm availability and eligibility with the study team through the original record.

IVFMD - My Duc Hospital
Ho Chi Minh City, Vietnam
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableCompletedINTERVENTIONAL

Thetha Nami Ngithethe Nawe ("Let's Talk"): Step Wedge cRCT of Peer Led Community PrEP and SRH for Youth in South Africa

ClinicalTrials.gov · NCT05405582 · Registry updated: 2026-07-06

Condition / research focus: HIV-1-infection; Sexually Transmitted Diseases
Sponsor: Africa Health Research Institute
Countries with listed sites: South Africa
Registry dates and results: Start: 2022-05-26. Completion: 2026-03-01 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Community-based differentiated HIV prevention incl.PrEP with SRH (combination_product)
Primary Health Clinic based HIV prevention and care (other)

Where the study takes place — 1 listed sites

Africa Health Research Institute
Somkele, KwaZulu-Natal, South Africa
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Validation of Effectiveness on NaturalCycles Users

ClinicalTrials.gov · NCT07566793 · Registry updated: 2026-07-01

Condition / research focus: Contraception
Sponsor: Natural Cycles
Countries with listed sites: United States
Registry dates and results: Start: 2026-04-28. Completion: 2027-12 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Log daily intercourse information (behavioral)
Natural Cycles application (device)

Where the study takes place — 1 listed sites

Natural Cycles USA Corp
New York, New York, United States
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableCompletedOBSERVATIONAL

Sleep Length and Euploid Embryo Transfer Prospective Study

ClinicalTrials.gov · NCT06139757 · Registry updated: 2026-06-30

Condition / research focus: Infertility, Female
Sponsor: Northwestern University
Countries with listed sites: United States
Registry dates and results: Start: 2024-01-17. Completion: 2025-07-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Oura ring (device)

Where the study takes place — 1 listed sites

Northwestern Memorial Hospital
Chicago, Illinois, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Descriptive Analysis of Serum Immunological Markers During an Euploid Frozen Embryo Transfer in a Natural Cycle.

ClinicalTrials.gov · NCT05473273 · Registry updated: 2026-06-25

Condition / research focus: Infertility, Female
Sponsor: ART Fertility Clinics LLC
Countries with listed sites: United Arab Emirates
Registry dates and results: Start: 2023-04-24. Completion: 2026-12-30 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Endometrin 100Mg Vaginal Insert (drug)
Estradiol Valerate (drug)

Where the study takes place — 1 listed sites

ART Fertility Clinics LLC
Abu Dhabi, Abu Dhabi Emirate, United Arab Emirates
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableRecruitingINTERVENTIONAL

Early Luteal Phase Progesterone Kinetics After hCG-Induced Ovulation in Modified Natural Cycle

ClinicalTrials.gov · NCT07028710 · Registry updated: 2026-06-22

Condition / research focus: Luteal Phase Insufficiency
Sponsor: University Hospital, Montpellier
Countries with listed sites: France
Registry dates and results: Start: 2026-01-12. Completion: 2030-06-15 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

hCG (drug)

Where the study takes place — 1 listed sites

Hôpital Arnaud de Villeneuve
Montpellier, France
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableCompletedINTERVENTIONAL

Optimizing a Digital AEP Risk Intervention With Native Women and Communities

ClinicalTrials.gov · NCT06324929 · Registry updated: 2026-06-17

Condition / research focus: Alcohol Exposed Pregnancy; Unplanned Pregnancy; Alcohol Use, Unspecified; Contraception Use; Sexual Behavior
Sponsor: University of Virginia
Countries with listed sites: United States
Registry dates and results: Start: 2024-05-16. Completion: 2026-05-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

CARRII Native Rapid Pilot Testing (behavioral)

Where the study takes place — 1 listed sites

University of Virginia Fontaine Research Park
Charlottesville, Virginia, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableRecruitingINTERVENTIONAL

Apply Biphasic IVM for POSEIDON Group 1

ClinicalTrials.gov · NCT07632300 · Registry updated: 2026-06-17

Condition / research focus: Healthy Adult Females; Healthy Adult Male
Sponsor: Mỹ Đức Hospital
Countries with listed sites: Vietnam
Registry dates and results: Start: 2026-06-12. Completion: 2027-03-30 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Biphasic-IVM (procedure)

Where the study takes place — 1 listed sites

IVFMD, My Duc Hospital
Ho Chi Minh City, Hồ Chí Minh, Vietnam
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableNot yet recruitingOBSERVATIONAL

Corpus Luteum Function and Cardiovascular Adaptation in a Natural MOCK Cycle.

ClinicalTrials.gov · NCT07648381 · Registry updated: 2026-06-15

Condition / research focus: Menstrual Cycle; Luteal Phase Progesterone Levels; Luteal Phase Adaptation; MOCK Cycle
Sponsor: Universitair Ziekenhuis Brussel
Countries with listed sites: Belgium
Registry dates and results: Start: 2026-07-01. Completion: 2028-09 (may be estimated). No results posted in this registry response.

Products and interventions (4)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Blood samples for the analysis of biomarkers. (diagnostic_test)
Transvaginal ultrasound for follicle and endometrium measurements. (diagnostic_test)
Mean Arterial Pressure measurement. (diagnostic_test)
Ovitrelle injection for ovulation induction (drug)

Where the study takes place — 1 listed sites

UZ Brussel
Jette, Belgium
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableActive, not recruitingINTERVENTIONAL

Clinical and Neurobiological Profile Predictive of Pejorative Outcome of Depression

ClinicalTrials.gov · NCT03690856 · Registry updated: 2026-06-12

Condition / research focus: Depression
Sponsor: Rennes University Hospital
Countries with listed sites: France
Registry dates and results: Start: 2019-11-08. Completion: 2028-02-02 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

inflammatory, neuropsychological and neuroimaging assessment (other)

Where the study takes place — 8 listed sites

CHU angers
Angers, France
Site recruitment: Not reported
CHU de Brest - Hôpital de Bohars
Brest, France
Site recruitment: Not reported
CHU de Nantes - Hotel-Dieu
Nantes, France
Site recruitment: Not reported
CH Henri Laborit
Poitiers, France
Site recruitment: Not reported
CH Guillaume Regnier
Rennes, France
Site recruitment: Not reported
EPSM du Morbihan
Saint-Avé, France
Site recruitment: Not reported
CH Saint-Malo
St-Malo, France
Site recruitment: Not reported
CHU de Tours, Clinique Psychiatrique Universitaire
Tours, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 4CompletedINTERVENTIONAL

Pharmacokinetic Study of Intravenous Lidocaine in Young and Elderly Patients

ClinicalTrials.gov · NCT06795100 · Registry updated: 2026-06-12

Condition / research focus: Anesthesia
Sponsor: Rennes University Hospital
Countries with listed sites: France
Registry dates and results: Start: 2025-04-28. Completion: 2026-02-26 (may be estimated). No results posted in this registry response.

Products and interventions (7)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Pre-inclusion (other)
Inclusion (other)
Lidocaine (drug)
Pharmacokinetic study of intravenous lidocaine (other)
Pain (other)
adverse effects/events (other)
biological blood test (biological)

Where the study takes place — 2 listed sites

CHU de Rennes - Hôpital Pontchaillou
Rennes, CHU de Rennes, France
Site recruitment: Not reported
CHU de Rennes - Hôpital Sud
Rennes, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableNot yet recruitingINTERVENTIONAL

Zishen Yutai Pill for Patients With Recurrent Implantation Failure

ClinicalTrials.gov · NCT07641088 · Registry updated: 2026-06-11

Condition / research focus: Recurrent Implantation Failure
Sponsor: Peking University Third Hospital
Countries with listed sites: China
Registry dates and results: Start: 2026-07-01. Completion: 2029-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Zishen Yutai Pill (drug)
Placebo (drug)

Where the study takes place — 13 listed sites

The First Affiliated Hospital of University of Science and Technology of China
Hefei, Anhui, China
Site recruitment: Not reported
Peking University Third Hospital
Beijing, Beijing Municipality, China
Site recruitment: Not reported
Peking University People's Hospital
Beijing, Beijing Municipality, China
Site recruitment: Not reported
Nanfang Hospital, Southern Medical University
Guangzhou, Guangdong, China
Site recruitment: Not reported
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Guangzhou, Guangdong, China
Site recruitment: Not reported
The Second Hospital of Hebei Medical University
Shijiazhuang, Hebei, China
Site recruitment: Not reported
The Second Affiliated Hospital of Zhengzhou University
Zhengzhou, Henan, China
Site recruitment: Not reported
Xiangya Hospital of Central South University
Changsha, Hunan, China
Site recruitment: Not reported
Jiangsu Province Hospital
Nanjing, Jiangsu, China
Site recruitment: Not reported
The First Affiliated Hospital of Xi'an Jiao Tong University
Xi'an, Shaanxi, China
Site recruitment: Not reported
Shanghai Ninth People's Hospital
Shanghai, Shanghai Municipality, China
Site recruitment: Not reported
Sichuan Jinxin Xinan Women and Children's Hospital (Bisheng)
Chengdu, Sichuan, China
Site recruitment: Not reported
The First Affiliated Hospital of Wenzhou Medical University
Wenzhou, Zhejiang, China
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 2CompletedINTERVENTIONAL

Extended Letrozole Protocol Versus Letrozole Plus Inositol for Induction of Ovulation in Letrozole Resistant PCOS Women

ClinicalTrials.gov · NCT07635082 · Registry updated: 2026-06-09

Condition / research focus: Polycystic Ovary Syndrome (PCOS) Women; Polycystic Ovary Syndrome
Sponsor: Eman Basuni Ebrahim Mowad
Countries with listed sites: Egypt
Registry dates and results: Start: 2024-02-01. Completion: 2025-07-01 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

ELP (Extended Letrozole Protocol) (drug)
LIP (Letrozole + Inositol Protocol) (drug)

Where the study takes place — 1 listed sites

Kafrelsheikh University Hospital
Kafr ash Shaykh, Kafr el-Sheikh Governorate, Egypt
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableNot yet recruitingINTERVENTIONAL

The Application of HCG in Luteal Support for Frozen Embryo Transfer in Ovulation Cycle of Obese Women

ClinicalTrials.gov · NCT07633002 · Registry updated: 2026-06-08

Condition / research focus: Obesity, Maternal
Sponsor: The Second Hospital of Shandong University
Countries with listed sites: No country reported
Registry dates and results: Start: 2026-07-01. Completion: 2027-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Human Chorionic Gonadotropin (drug) — also listed as: HCG

Where the study takes place — 0 listed sites

The registry does not list facilities in this record. This does not mean the study has no sites.

Original record, eligibility, contacts and results →

Phase 2Not yet recruitingINTERVENTIONAL

Isotretinoin vs. Doxycycline for Acneiform Rash in Patients Receiving Drugs That Target the MAPK Pathway

ClinicalTrials.gov · NCT07629167 · Registry updated: 2026-06-05

Condition / research focus: Acneiform Drug Eruption; Acneiform Eruptions
Sponsor: University of California, San Francisco
Countries with listed sites: United States
Registry dates and results: Start: 2026-08-30. Completion: 2030-03-30 (may be estimated). No results posted in this registry response.

Products and interventions (6)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Isotretinoin (drug) — also listed as: Accutane
Doxycycline (drug) — also listed as: Vibramycin, Doryx
Blood specimen collection (procedure) — also listed as: Blood sample collection
Photographs of Rash (other)
Questionnaires (behavioral) — also listed as: Health-Related Quality of Life Questionnaires
Stool Specimen collection (procedure) — also listed as: Stool Sample collection

Where the study takes place — 1 listed sites

University of California, San Francisco
San Francisco, California, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 2Not yet recruitingINTERVENTIONAL

Letrozole Versus Methotrexate for Management of Undisturbed Ectopic Pregnancy

ClinicalTrials.gov · NCT07624903 · Registry updated: 2026-06-03

Condition / research focus: Ectopic Pregnancy
Sponsor: Kafrelsheikh University
Countries with listed sites: Egypt
Registry dates and results: Start: 2026-06. Completion: 2027-07 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Methotrexate (drug) (drug)
Letrozole 2.5Mg Tab (drug)

Where the study takes place — 1 listed sites

Kafr El-Sheikh University
Kafr ash Shaykh, Kafr el-Sheikh Governorate, Egypt
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Point of Care Tests in the Management of Very Early Medical Abortion

ClinicalTrials.gov · NCT07417787 · Registry updated: 2026-06-03

Condition / research focus: Abortion Early
Sponsor: University of Edinburgh
Countries with listed sites: Sweden · United Kingdom
Registry dates and results: Start: 2026-04-23. Completion: 2028-02 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Blood test (diagnostic_test)
Participant Questionnaire (other)

Where the study takes place — 3 listed sites

University of Gothenberg
Gothenburg, Sweden
Site recruitment: Not yet recruiting
Karolinska Institutet
Stockholm, Sweden
Site recruitment: Not yet recruiting
Chalmers Sexual Health Clinic
Edinburgh, United Kingdom
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase 3Not yet recruitingINTERVENTIONAL

Individualized Prolonged Luteal Support After Fresh Embryo Transfer in Women With Low Progesterone

ClinicalTrials.gov · NCT07613528 · Registry updated: 2026-06-02

Condition / research focus: Pregnancy; Progesterone Supplementation; Low Serum Progesterone
Sponsor: University Hospital, Montpellier
Countries with listed sites: France
Registry dates and results: Start: 2027-03. Completion: 2030-09 (may be estimated). No results posted in this registry response.

Products and interventions (3)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Progesterone Injectable (drug) — also listed as: PROGIRON 25 mg, injectable solution
Placebo (drug) — also listed as: PLACEBO, injectable solution
Progesterone Vaginal Suppository (drug) — also listed as: PROGESTAN 200 mg, vaginal soft capsule

Where the study takes place — 1 listed sites

CHU de Montpellier
Montpellier, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

GnRH for Luteal Support - Mechanism of Action

ClinicalTrials.gov · NCT07620067 · Registry updated: 2026-06-02

Condition / research focus: GnRH Antagonist IVF Protocol; Fresh Embryo Transfer; Administration of Hormonal Luteal Support
Sponsor: Heli Alexandroni
Countries with listed sites: Israel
Registry dates and results: Start: 2026-05-18. Completion: 2026-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

GnRH agonist (drug) — also listed as: Synarel nasal spray
Progesterone (drug) — also listed as: uterogestane, endometrin, crinon

Where the study takes place — 1 listed sites

Shaare Zedek Medical Center
Jerusalem, Israel
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableSuspendedOBSERVATIONAL

A Screening and Recruitment Study in Adults Expressing Interest in the Emory Microbiota Enrichment Program

ClinicalTrials.gov · NCT03350711 · Registry updated: 2026-05-28

Condition / research focus: Clostridium Difficile Infection
Sponsor: Emory University
Countries with listed sites: United States
Registry dates and results: Start: 2018-09-13. Completion: 2028-01 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Microbiota Enrichment Program (MEP) (other)

Where the study takes place — 3 listed sites

Emory Clinic
Atlanta, Georgia, United States
Site recruitment: Not reported
Emory Hospital
Atlanta, Georgia, United States
Site recruitment: Not reported
The Hope Clinic of the Emory Vaccine Center
Decatur, Georgia, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Explore the world’s study registries

These links open external registries; their records are not merged into the results above. WHO ICTRP provides a broader search across contributing registries. Search the same generic name, aliases and development codes in relevant regions. One multinational study may appear in more than one registry, so compare registration identifiers before counting it twice.

Worldwide

Africa

Pan African Clinical Trial Registry ↗

Americas

Asia

Middle East

Europe

Oceania

Australia / New Zealand — ANZCTR ↗

Registry directory checked October 5, 2026 against the WHO registry network. This is a starting point, not complete coverage of every country or continent. Record availability, language and update schedules vary by registry.

Worldwide Study Finder

Loading registry information…

Worldwide Study Finder

Where are peptides being studied? Explore registered human studies by product, phase, condition and location — from early development through Phase 4, alongside studies where phase does not apply.

Searchable results come from ClinicalTrials.gov and include international sites. For broader coverage, use the worldwide and regional registries below. No single registry captures every study.

Find a study

Registry search results

Matching records; showing 20 on this page, newest registry updates first. Search checked 2026-11-08 18:08 UTC. Counts are registry matches, not unique peptides or a worldwide total.

Phase not reported / not applicableRecruitingOBSERVATIONAL

Endometrial Peristalsis and Pregnancy Outcomes in Hormone Replacement Therapy (HRT) - Frozen Embryo Transfer (FET) Cycles

ClinicalTrials.gov · NCT07675213 · Registry updated: 2026-07-09

Condition / research focus: Infertility; Endometrial Peristalsis; Uterine Contraction; Endometrial Waves; Frozen Embryo Transfer (FET); Uterine Peristalsis; Hormone Replacement Therapy (HRT)
Sponsor: Mỹ Đức Hospital
Countries with listed sites: Vietnam
Registry dates and results: Start: 2026-06-30. Completion: 2027-12-01 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Endometrial peristalsis and hormone measurements (other)

Where the study takes place — 1 listed sites

IVFMD - My Duc Hospital
Ho Chi Minh City, Vietnam
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableCompletedINTERVENTIONAL

Thetha Nami Ngithethe Nawe ("Let's Talk"): Step Wedge cRCT of Peer Led Community PrEP and SRH for Youth in South Africa

ClinicalTrials.gov · NCT05405582 · Registry updated: 2026-07-06

Condition / research focus: HIV-1-infection; Sexually Transmitted Diseases
Sponsor: Africa Health Research Institute
Countries with listed sites: South Africa
Registry dates and results: Start: 2022-05-26. Completion: 2026-03-01 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Community-based differentiated HIV prevention incl.PrEP with SRH (combination_product)
Primary Health Clinic based HIV prevention and care (other)

Where the study takes place — 1 listed sites

Africa Health Research Institute
Somkele, KwaZulu-Natal, South Africa
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Validation of Effectiveness on NaturalCycles Users

ClinicalTrials.gov · NCT07566793 · Registry updated: 2026-07-01

Condition / research focus: Contraception
Sponsor: Natural Cycles
Countries with listed sites: United States
Registry dates and results: Start: 2026-04-28. Completion: 2027-12 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Log daily intercourse information (behavioral)
Natural Cycles application (device)

Where the study takes place — 1 listed sites

Natural Cycles USA Corp
New York, New York, United States
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableCompletedOBSERVATIONAL

Sleep Length and Euploid Embryo Transfer Prospective Study

ClinicalTrials.gov · NCT06139757 · Registry updated: 2026-06-30

Condition / research focus: Infertility, Female
Sponsor: Northwestern University
Countries with listed sites: United States
Registry dates and results: Start: 2024-01-17. Completion: 2025-07-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Oura ring (device)

Where the study takes place — 1 listed sites

Northwestern Memorial Hospital
Chicago, Illinois, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Descriptive Analysis of Serum Immunological Markers During an Euploid Frozen Embryo Transfer in a Natural Cycle.

ClinicalTrials.gov · NCT05473273 · Registry updated: 2026-06-25

Condition / research focus: Infertility, Female
Sponsor: ART Fertility Clinics LLC
Countries with listed sites: United Arab Emirates
Registry dates and results: Start: 2023-04-24. Completion: 2026-12-30 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Endometrin 100Mg Vaginal Insert (drug)
Estradiol Valerate (drug)

Where the study takes place — 1 listed sites

ART Fertility Clinics LLC
Abu Dhabi, Abu Dhabi Emirate, United Arab Emirates
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableRecruitingINTERVENTIONAL

Early Luteal Phase Progesterone Kinetics After hCG-Induced Ovulation in Modified Natural Cycle

ClinicalTrials.gov · NCT07028710 · Registry updated: 2026-06-22

Condition / research focus: Luteal Phase Insufficiency
Sponsor: University Hospital, Montpellier
Countries with listed sites: France
Registry dates and results: Start: 2026-01-12. Completion: 2030-06-15 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

hCG (drug)

Where the study takes place — 1 listed sites

Hôpital Arnaud de Villeneuve
Montpellier, France
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Not applicableCompletedINTERVENTIONAL

Optimizing a Digital AEP Risk Intervention With Native Women and Communities

ClinicalTrials.gov · NCT06324929 · Registry updated: 2026-06-17

Condition / research focus: Alcohol Exposed Pregnancy; Unplanned Pregnancy; Alcohol Use, Unspecified; Contraception Use; Sexual Behavior
Sponsor: University of Virginia
Countries with listed sites: United States
Registry dates and results: Start: 2024-05-16. Completion: 2026-05-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

CARRII Native Rapid Pilot Testing (behavioral)

Where the study takes place — 1 listed sites

University of Virginia Fontaine Research Park
Charlottesville, Virginia, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableRecruitingINTERVENTIONAL

Apply Biphasic IVM for POSEIDON Group 1

ClinicalTrials.gov · NCT07632300 · Registry updated: 2026-06-17

Condition / research focus: Healthy Adult Females; Healthy Adult Male
Sponsor: Mỹ Đức Hospital
Countries with listed sites: Vietnam
Registry dates and results: Start: 2026-06-12. Completion: 2027-03-30 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Biphasic-IVM (procedure)

Where the study takes place — 1 listed sites

IVFMD, My Duc Hospital
Ho Chi Minh City, Hồ Chí Minh, Vietnam
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableNot yet recruitingOBSERVATIONAL

Corpus Luteum Function and Cardiovascular Adaptation in a Natural MOCK Cycle.

ClinicalTrials.gov · NCT07648381 · Registry updated: 2026-06-15

Condition / research focus: Menstrual Cycle; Luteal Phase Progesterone Levels; Luteal Phase Adaptation; MOCK Cycle
Sponsor: Universitair Ziekenhuis Brussel
Countries with listed sites: Belgium
Registry dates and results: Start: 2026-07-01. Completion: 2028-09 (may be estimated). No results posted in this registry response.

Products and interventions (4)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Blood samples for the analysis of biomarkers. (diagnostic_test)
Transvaginal ultrasound for follicle and endometrium measurements. (diagnostic_test)
Mean Arterial Pressure measurement. (diagnostic_test)
Ovitrelle injection for ovulation induction (drug)

Where the study takes place — 1 listed sites

UZ Brussel
Jette, Belgium
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableActive, not recruitingINTERVENTIONAL

Clinical and Neurobiological Profile Predictive of Pejorative Outcome of Depression

ClinicalTrials.gov · NCT03690856 · Registry updated: 2026-06-12

Condition / research focus: Depression
Sponsor: Rennes University Hospital
Countries with listed sites: France
Registry dates and results: Start: 2019-11-08. Completion: 2028-02-02 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

inflammatory, neuropsychological and neuroimaging assessment (other)

Where the study takes place — 8 listed sites

CHU angers
Angers, France
Site recruitment: Not reported
CHU de Brest - Hôpital de Bohars
Brest, France
Site recruitment: Not reported
CHU de Nantes - Hotel-Dieu
Nantes, France
Site recruitment: Not reported
CH Henri Laborit
Poitiers, France
Site recruitment: Not reported
CH Guillaume Regnier
Rennes, France
Site recruitment: Not reported
EPSM du Morbihan
Saint-Avé, France
Site recruitment: Not reported
CH Saint-Malo
St-Malo, France
Site recruitment: Not reported
CHU de Tours, Clinique Psychiatrique Universitaire
Tours, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 4CompletedINTERVENTIONAL

Pharmacokinetic Study of Intravenous Lidocaine in Young and Elderly Patients

ClinicalTrials.gov · NCT06795100 · Registry updated: 2026-06-12

Condition / research focus: Anesthesia
Sponsor: Rennes University Hospital
Countries with listed sites: France
Registry dates and results: Start: 2025-04-28. Completion: 2026-02-26 (may be estimated). No results posted in this registry response.

Products and interventions (7)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Pre-inclusion (other)
Inclusion (other)
Lidocaine (drug)
Pharmacokinetic study of intravenous lidocaine (other)
Pain (other)
adverse effects/events (other)
biological blood test (biological)

Where the study takes place — 2 listed sites

CHU de Rennes - Hôpital Pontchaillou
Rennes, CHU de Rennes, France
Site recruitment: Not reported
CHU de Rennes - Hôpital Sud
Rennes, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableNot yet recruitingINTERVENTIONAL

Zishen Yutai Pill for Patients With Recurrent Implantation Failure

ClinicalTrials.gov · NCT07641088 · Registry updated: 2026-06-11

Condition / research focus: Recurrent Implantation Failure
Sponsor: Peking University Third Hospital
Countries with listed sites: China
Registry dates and results: Start: 2026-07-01. Completion: 2029-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Zishen Yutai Pill (drug)
Placebo (drug)

Where the study takes place — 13 listed sites

The First Affiliated Hospital of University of Science and Technology of China
Hefei, Anhui, China
Site recruitment: Not reported
Peking University Third Hospital
Beijing, Beijing Municipality, China
Site recruitment: Not reported
Peking University People's Hospital
Beijing, Beijing Municipality, China
Site recruitment: Not reported
Nanfang Hospital, Southern Medical University
Guangzhou, Guangdong, China
Site recruitment: Not reported
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University
Guangzhou, Guangdong, China
Site recruitment: Not reported
The Second Hospital of Hebei Medical University
Shijiazhuang, Hebei, China
Site recruitment: Not reported
The Second Affiliated Hospital of Zhengzhou University
Zhengzhou, Henan, China
Site recruitment: Not reported
Xiangya Hospital of Central South University
Changsha, Hunan, China
Site recruitment: Not reported
Jiangsu Province Hospital
Nanjing, Jiangsu, China
Site recruitment: Not reported
The First Affiliated Hospital of Xi'an Jiao Tong University
Xi'an, Shaanxi, China
Site recruitment: Not reported
Shanghai Ninth People's Hospital
Shanghai, Shanghai Municipality, China
Site recruitment: Not reported
Sichuan Jinxin Xinan Women and Children's Hospital (Bisheng)
Chengdu, Sichuan, China
Site recruitment: Not reported
The First Affiliated Hospital of Wenzhou Medical University
Wenzhou, Zhejiang, China
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 2CompletedINTERVENTIONAL

Extended Letrozole Protocol Versus Letrozole Plus Inositol for Induction of Ovulation in Letrozole Resistant PCOS Women

ClinicalTrials.gov · NCT07635082 · Registry updated: 2026-06-09

Condition / research focus: Polycystic Ovary Syndrome (PCOS) Women; Polycystic Ovary Syndrome
Sponsor: Eman Basuni Ebrahim Mowad
Countries with listed sites: Egypt
Registry dates and results: Start: 2024-02-01. Completion: 2025-07-01 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

ELP (Extended Letrozole Protocol) (drug)
LIP (Letrozole + Inositol Protocol) (drug)

Where the study takes place — 1 listed sites

Kafrelsheikh University Hospital
Kafr ash Shaykh, Kafr el-Sheikh Governorate, Egypt
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Not applicableNot yet recruitingINTERVENTIONAL

The Application of HCG in Luteal Support for Frozen Embryo Transfer in Ovulation Cycle of Obese Women

ClinicalTrials.gov · NCT07633002 · Registry updated: 2026-06-08

Condition / research focus: Obesity, Maternal
Sponsor: The Second Hospital of Shandong University
Countries with listed sites: No country reported
Registry dates and results: Start: 2026-07-01. Completion: 2027-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Human Chorionic Gonadotropin (drug) — also listed as: HCG

Where the study takes place — 0 listed sites

The registry does not list facilities in this record. This does not mean the study has no sites.

Original record, eligibility, contacts and results →

Phase 2Not yet recruitingINTERVENTIONAL

Isotretinoin vs. Doxycycline for Acneiform Rash in Patients Receiving Drugs That Target the MAPK Pathway

ClinicalTrials.gov · NCT07629167 · Registry updated: 2026-06-05

Condition / research focus: Acneiform Drug Eruption; Acneiform Eruptions
Sponsor: University of California, San Francisco
Countries with listed sites: United States
Registry dates and results: Start: 2026-08-30. Completion: 2030-03-30 (may be estimated). No results posted in this registry response.

Products and interventions (6)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Isotretinoin (drug) — also listed as: Accutane
Doxycycline (drug) — also listed as: Vibramycin, Doryx
Blood specimen collection (procedure) — also listed as: Blood sample collection
Photographs of Rash (other)
Questionnaires (behavioral) — also listed as: Health-Related Quality of Life Questionnaires
Stool Specimen collection (procedure) — also listed as: Stool Sample collection

Where the study takes place — 1 listed sites

University of California, San Francisco
San Francisco, California, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase 2Not yet recruitingINTERVENTIONAL

Letrozole Versus Methotrexate for Management of Undisturbed Ectopic Pregnancy

ClinicalTrials.gov · NCT07624903 · Registry updated: 2026-06-03

Condition / research focus: Ectopic Pregnancy
Sponsor: Kafrelsheikh University
Countries with listed sites: Egypt
Registry dates and results: Start: 2026-06. Completion: 2027-07 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Methotrexate (drug) (drug)
Letrozole 2.5Mg Tab (drug)

Where the study takes place — 1 listed sites

Kafr El-Sheikh University
Kafr ash Shaykh, Kafr el-Sheikh Governorate, Egypt
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

Point of Care Tests in the Management of Very Early Medical Abortion

ClinicalTrials.gov · NCT07417787 · Registry updated: 2026-06-03

Condition / research focus: Abortion Early
Sponsor: University of Edinburgh
Countries with listed sites: Sweden · United Kingdom
Registry dates and results: Start: 2026-04-23. Completion: 2028-02 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Blood test (diagnostic_test)
Participant Questionnaire (other)

Where the study takes place — 3 listed sites

University of Gothenberg
Gothenburg, Sweden
Site recruitment: Not yet recruiting
Karolinska Institutet
Stockholm, Sweden
Site recruitment: Not yet recruiting
Chalmers Sexual Health Clinic
Edinburgh, United Kingdom
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase 3Not yet recruitingINTERVENTIONAL

Individualized Prolonged Luteal Support After Fresh Embryo Transfer in Women With Low Progesterone

ClinicalTrials.gov · NCT07613528 · Registry updated: 2026-06-02

Condition / research focus: Pregnancy; Progesterone Supplementation; Low Serum Progesterone
Sponsor: University Hospital, Montpellier
Countries with listed sites: France
Registry dates and results: Start: 2027-03. Completion: 2030-09 (may be estimated). No results posted in this registry response.

Products and interventions (3)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Progesterone Injectable (drug) — also listed as: PROGIRON 25 mg, injectable solution
Placebo (drug) — also listed as: PLACEBO, injectable solution
Progesterone Vaginal Suppository (drug) — also listed as: PROGESTAN 200 mg, vaginal soft capsule

Where the study takes place — 1 listed sites

CHU de Montpellier
Montpellier, France
Site recruitment: Not reported

Original record, eligibility, contacts and results →

Phase not reported / not applicableRecruitingOBSERVATIONAL

GnRH for Luteal Support - Mechanism of Action

ClinicalTrials.gov · NCT07620067 · Registry updated: 2026-06-02

Condition / research focus: GnRH Antagonist IVF Protocol; Fresh Embryo Transfer; Administration of Hormonal Luteal Support
Sponsor: Heli Alexandroni
Countries with listed sites: Israel
Registry dates and results: Start: 2026-05-18. Completion: 2026-12-31 (may be estimated). No results posted in this registry response.

Products and interventions (2)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

GnRH agonist (drug) — also listed as: Synarel nasal spray
Progesterone (drug) — also listed as: uterogestane, endometrin, crinon

Where the study takes place — 1 listed sites

Shaare Zedek Medical Center
Jerusalem, Israel
Site recruitment: Recruiting

Original record, eligibility, contacts and results →

Phase not reported / not applicableSuspendedOBSERVATIONAL

A Screening and Recruitment Study in Adults Expressing Interest in the Emory Microbiota Enrichment Program

ClinicalTrials.gov · NCT03350711 · Registry updated: 2026-05-28

Condition / research focus: Clostridium Difficile Infection
Sponsor: Emory University
Countries with listed sites: United States
Registry dates and results: Start: 2018-09-13. Completion: 2028-01 (may be estimated). No results posted in this registry response.

Products and interventions (1)

Includes comparators and combinations. A search match is not a verified peptide identity or evidence of benefit.

Microbiota Enrichment Program (MEP) (other)

Where the study takes place — 3 listed sites

Emory Clinic
Atlanta, Georgia, United States
Site recruitment: Not reported
Emory Hospital
Atlanta, Georgia, United States
Site recruitment: Not reported
The Hope Clinic of the Emory Vaccine Center
Decatur, Georgia, United States
Site recruitment: Not reported

Original record, eligibility, contacts and results →