Crick
HomeTrialsGenesDrugs23andMeGraphBlogContact
  • Home
  • Trials
  • Genes
  • Drugs
  • 23andMe
  • Graph
  • Blog
  • Contact
Crick

An open-source clinical intelligence platform. Explore clinical trials, gene networks, and molecular structures using public data sources.

Data Sources

  • ClinicalTrials.gov
  • OpenTargets
  • ClinVar
  • PubChem

Links

  • Contact
  • About
  • Privacy

© 2026 Crick. All rights reserved.

Crick is for educational purposes only. Not medical advice.

Results for “Hormone Replacement Therapy Cycle”

28 trials

Filters

Phase
Early Phase 1
Phase 1
Phase 2
Phase 3
Phase 4
Status
Recruiting
Active, Not Recruiting
Not Yet Recruiting
Completed
Enrolling by Invitation

Showing 20 of 28 results

Post-approval studies (Phase 4)Study completedNCT04758871
What this trial is testing

Oral Versus Vaginal Progesterone for Luteal Phase Supplementation in Frozen Embryo Transfer Cycles

Who this might be right for
Frozen Embryo TransferHormone Replacement TherapyDydrogesterone+1 more
CRG UZ Brussel 150
Post-approval studies (Phase 4)WithdrawnNCT05168865
What this trial is testing

Letrozole Versus Hormonal Preparation in Frozen Cycles of PCOS Patients.

Who this might be right for
Frozen Embryo TransferPolycystic Ovarian DiseaseLetrozole+3 more
Dubai Fertility Center
Not applicableNot Yet RecruitingNCT07388797
What this trial is testing

Impact of Serum Progesterone Levels on Embryo Transfer Day on Clinical Pregnancy

Who this might be right for
Reproductive Issues
Chinese University of Hong Kong 370
Large-scale testing (Phase 3)Study completedNCT05189873
What this trial is testing

GnRH Agonist Plus Hormone Replacement Therapy vs Hormone Replacement Therapy on IVF Outcomes

Who this might be right for
Polycystic Ovary SyndromeInfertility, Female
Tehran University of Medical Sciences 128
Post-approval studies (Phase 4)Looking for participantsNCT05515354
What this trial is testing

Smoking Cessation and Menstrual Cycle Phase

Who this might be right for
Nicotine DependenceTobacco SmokingSmoking Cessation+2 more
Centre for Addiction and Mental Health 1,200
Early research (Phase 1)Looking for participantsNCT05980091
What this trial is testing

Optimal Timing of Euploid Day 6 Blastocyst Transfer in Frozen HRT Cycles, Day 6 or Day 7 of Progesterone Administration.

Who this might be right for
InfertilityFertility IssuesInfertility, Female
ART Fertility Clinics LLC 316
Not applicableUnknownNCT04248309
What this trial is testing

Serum Progesterone Level in HRT-FET：a RCT

Who this might be right for
Progesterone,Hormone Replacement Thawed Embryo Transfer Cycles
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University 423
Not applicableEnded earlyNCT03954587
What this trial is testing

What is the Optimal Cycle Regimen for Frozen- Thawed Embryo Transfer Cycles

Who this might be right for
InfertilityFemale InfertilityPregnancy Early
ART Fertility Clinics LLC 4
Post-approval studies (Phase 4)Study completedNCT00843570
What this trial is testing

Natural Versus HRT Cycles in Frozen Embryo Replacement Treatment

Who this might be right for
Infertility
University of Oxford 159
Not applicableLooking for participantsNCT06372119
What this trial is testing

Letrozole-stimulated Cycle Strategy Versus Artificial Cycle Strategy (LETSACT)

Who this might be right for
Embryo TransferIrregular MenstruationLetrozole+1 more
Mỹ Đức Hospital 790
Not applicableStudy completedNCT04192396
What this trial is testing

Prospective Study of an Human Endometrial Receptivity Test

Who this might be right for
Infertile
University Hospital, Montpellier 217
Not applicableEnded earlyNCT05478616
What this trial is testing

Expression of Endometrium During Window of Implantation

Who this might be right for
Unrecognized Condition
Kaohsiung Veterans General Hospital. 3
Not applicableUnknownNCT01780558
What this trial is testing

A Study:the Different Outcomes Between Natural Cycle and Hormone Replacement Cycle in FET

Who this might be right for
Infertility
Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University 600
Not applicableLooking for participantsNCT06006091
What this trial is testing

The Effectiveness of the Letrozole-induced Endometrial Preparation Protocol in Frozen-thawed Embryo Transfer (FET)

Who this might be right for
LetrozoleInfertility, Female
International Peace Maternity and Child Health Hospital 858
Not applicableWithdrawnNCT03507322
What this trial is testing

Ultrasound Study by Texturization as a Predictor of Pregnancy in Oocyte Donation Programs

Who this might be right for
Infertility
Vida Recoletas Sevilla
Post-approval studies (Phase 4)UnknownNCT06181305
What this trial is testing

Endometrial Preparation in Frozen Embryo Transfer Cycles

Who this might be right for
IVF
Rahem Fertility Center 210
Post-approval studies (Phase 4)Ended earlyNCT03976544
What this trial is testing

Natural Cycle Versus Hormone Replacement Therapy Cycle for a Frozen-thawed Embryo Transfer in PGT Patients

Who this might be right for
MiscarriageFrozen Embryo TransferNatural Cycle+3 more
CRG UZ Brussel 362
Post-approval studies (Phase 4)UnknownNCT01353846
What this trial is testing

Comparison Between Natural and Artificial Cycle in Recipient Oocyte Patients

Who this might be right for
Infertility
Instituto Valenciano de Infertilidad, IVI VALENCIA 70
Not applicableStudy completedNCT03312309
What this trial is testing

Personal FET in RIF Patients According to Histological Dating of Endometrial of Natural/ Hormone Replacement Cycle

Who this might be right for
Infertility, Female
Reproductive & Genetic Hospital of CITIC-Xiangya 155
Large-scale testing (Phase 3)Not Yet RecruitingNCT06644794
What this trial is testing

Progesterone-modified Natural Cycle for FET

Who this might be right for
Infertility, Female
Shandong University of Traditional Chinese Medicine 336
Load More Results