Neoplasms

Urinary Tract, Sexual Organs, and Pregnancy Conditions

Gland and Hormone Related Diseases

All Conditions

Symptoms and General Pathology

Polycystic Ovary Syndrome

Abortion, Spontaneous

Ovarian Diseases

Syndrome

Pregnancy Complications

Urogenital Diseases

Female Urogenital Diseases

Female Urogenital Diseases and Pregnancy Complications

Adnexal Diseases

Genital Diseases, Female

Genital Diseases

Gonadal Disorders

Endocrine System Diseases

Cysts

Ovarian Cysts

Antineoplastic Agents

All Drugs and Chemicals

Reproductive Control Agents

Letrozole

Estradiol 17 beta-cypionate

Estradiol 3-benzoate

Estradiol

Polyestradiol phosphate

Dydrogesterone

Progesterone

Estrogens

Hormones

Hormone Antagonists

Aromatase Inhibitors

Enzyme Inhibitors

Estrogen Antagonists

Estrogen Receptor Antagonists

Progestins

Polycystic ovarian disease (PCOS) women undergoing frozen embryo transfer (FER) will use Letrozole 5 mg starting on day 3 of spontaneous menstrual period or after progesterone withdrawal bleeding for five consecutive days.

PCOS women will use daily Cetorelix acetate 0.25 mg injections for 5 days from day 1-3 of the menstrual follow or after progesterone (P4) withdrawal bleeding. They will commence daily oral Estradiol Valerate (E2) 2 mg twice daily for 5 days starting from day 3 of the menstrual flow or after P4 withdrawal bleeding, then-after three times daily. When endometrial thickness reaches 7 mm or more, the dose of E2 will be reduced to 4 mg/ day. Women will start using vaginal micronized P4 100 mg three times daily starting from 8PM. After 48 hours of starting the vaginal P4, oral Dydrogesterone 10 mg three times daily will commence.

Letrozole 5 mg starting on day 3 of spontaneous menstrual period or after progesterone withdrawal bleeding for five consecutive days.

Letrozole 2.5mg

One of the indications of freezing is to reduce the risk of ovarian hyperstimulation syndrome particularly in polycystic ovarian disease (PCOS) women. Very few RCTs addressed the issue of optimizing the endometrium for a frozen cycle. Interestingly, Letrozole for ovarian stimulation showed significantly better reproductive outcome when compared with hormone replacement therapy (HRT) cycle. In addition, HRT cycle has been associated with higher miscarriage rate when compared with natural cycle frozen embryo transfer. Nevertheless, there is not yet a well-designed prospective randomized study comparing letrozole and HRT in PCOS women undergoing frozen embryo transfer.

Freezing oocytes and embryos has become an integral part of the daily IVF practice. One of the indications of freezing is to reduce the risk of ovarian hyperstimulation syndrome particularly in polycystic ovarian disease (PCOS) women.

Very few randomized control trials addressed the issue of optimizing the endometrium for a frozen cycle. As PCOS women do not regularly ovulate, most of their frozen cycles are conducted after hormonal replacement therapy (HRT) preparation of the endometrium or after ovulation induction. In HRT cycle the endometrium is prepared using exogenous estradiol and progesterone. While HRT cycles requires less monitoring and easy scheduling, it is costly, associated with increased risk of thrombosis and women must continue using the exogenous hormones up to 10 to 12 weeks of gestation.

Interestingly, Letrozole for ovarian stimulation showed significantly better reproductive outcome when compared with HRT cycles. In agreement with the previous Chinese study, a retrospective Japanese ART registry data that included 110 722 frozen cycles confirmed the superiority of letrozole. Nevertheless, there is not yet a well-designed prospective randomized study.

In addition, HRT cycle has been associated with higher miscarriage rate when compared with natural cycle frozen embryo transfer. HRT is usually used in patients with PCOS. A retrospective study including 2664 PCOS patients showed significant decrease in the pregnancy loss when letrozole was used when compared with HRT in frozen cycles.

Investigators thought of comparing letrozole and HRT in women with PCOS who are undergoing frozen cycles in PCOS women. Live birth and miscarriage rates will be the primary outcomes.

Letrozole Versus Hormonal Preparation in Frozen Cycles of PCOS Patients.

Letrozole Versus Hormonal Preparation in Frozen Cycles of PCOS Patients. Randomized Controlled Study

A birth after 24 weeks gestation with a baby showing signs of life.

loss of pregnancy before 24 weeks gestation

ongoing viable pregnancy (by ultrasound examination at 12 weeks' gestation)

Dubai Fertility Center

Principal investigator

Infertility

Gastrointestinal Agents

Lactitol

A 16 week acupuncture pretreatment followed by letrozole(LE). Acupuncture treatment will start on day 3-5 after a spontaneous period or after a withdrawal bleeding following progestin. All subjects will be requested to use contraception during the 16 week acupuncture pretreatment. They will receive acupuncture treatment three times a week. Each treatment session lasts for 30 minutes and can be separated by an interval of 1-3 days, with a maximum of 48 treatment sessions during 16 weeks. After 16 weeks of acupuncture treatment, LE will start on day 2-3 after a spontaneous period or after a withdrawal bleeding after progestin administration. The subjects will be instructed to have intercourse on a regular basis during the cycles.

LE alone. LE will be started on day 3-5 after a spontaneous period or a withdrawal bleeding following progestin. The subjects will be instructed to have intercourse on a regular basis during the cycles.

Acupuncture treatment will start on day 3-5 after a spontaneous period or after a withdrawal bleeding following progestin. They will receive acupuncture treatment three times a week. Each treatment session lasts for 30 minutes and can be separated by an interval of 1-3 days, with a maximum of 48 treatment sessions during 16 weeks.

Pre-treatment acupuncture

Starting from 2.5mg daily from day 3-5 for 5 days after a spontaneous period or after a withdrawal bleeding following progestin, one time per day.Participants are treated for up to 4 cycles.

Hongxia Ma, PhD

Juan Li, PhD

Elisabet Stener-Victorin, PhD

Ernest HY NG, PhD

This is a study protocol for a multicenter, randomized, and controlled trial. In this protocol, we present a randomized controlled trial comparing acupuncture pretreatment followed by letrozole vs letrozole alone in polycystic ovary syndrome (PCOS) women with anovulatory infertility. The high prevalence of insulin resistance (IR) in women with PCOS women is considered to be one of the major pathophysiological changes of PCOS, leading to anovulatiory infertility. A study has shown that electro-acupuncture could significantly improve insulin sensitivity. The effect of acupuncture pretreatment on anovulatory PCOS women followed by ovulation induction has not been investigated before. A total of 384 patients enrolled in this study will be randomized into one of two groups. The treatment group: a 16 week acupuncture pretreatment followed by 4 cycles of letrozole and the control group: 4 cycles of letrozole alone. The primary outcome is the live birth rate. We postulate that acupuncture pretreatment followed by letrozole results in a higher live birth rate when compared with letrozole alone.

1. Study content 1.1 Study design This is a multi-centered, randomized, clinical trial. 1.2 Subject selection and exclusion

Initially, 384 PCOS women anovulatory infertility will be recruited from four hospitals in mainland China: Department of Traditional Chinese Medicine in the first affiliated hospital of Guangzhou Medical University, Department of Gynecology in Xuzhou maternity \& child health hospital, Department of Reproduction in Dalian Municipal Women and Children's Medical Center, and Department of Traditional Chinese Medicine in Hexian memorial affiliated hospital of Southern Medical University if they meet the inclusion criteria and do not have the exclusion criteria. Eligible subjects will be approached and sign the consent form after detailed explanation and counseling. Recruited subjects will be randomized to one of two groups:

Treatment group: a 16 week acupuncture pre-treatment followed by LE and Control group: LE alone 1.3 Screening visit 1.3.1 Obtain signed informed consent 1.3.2 Complete physical examination Perform complete physical examination including height, weight, hip and waist measurement. Height and weight will be recorded to the nearest 0.1 cm and 0.1 kg respectively. Waist and hip circumference will be recorded to the nearest 1 cm. And assessment of hirsutism by Ferriamn Gallwey score (FG), acne standard acne lesion counts, and pelvic exam with Pap smear or TCT.

1.3.3 Perform transvaginal ultrasound of the uterus and ovaries

1. Uterus, including the uterine dimensions, endometrial thickness and echo type, other uterine abnormalities, presence and size of leiomyoma will be obtained through transvaginal ultrasound.
2. Ovaries, including the ovarian size in three dimensions, the size of the largest ovarian follicle/cyst and size of every follicle with a mean diameter greater than 10 mm, and total antral follicle (small follicles with mean diameter \< 10 mm) count of each ovary will be obtained through transvaginal ultrasound.

1.3.4 Check urine pregnancy test 1.3.5 Laboratory Examination

1. Serum levels of sex hormone steroids including blood follicle-stimulating hormone (FSH), luteinizing hormone (LH), estrogen (E2), prolactin (PRL) and T, free testosterone, sex hormone binding globulin (SHBG), and thyroid stimulating hormone (TSH) will be evaluated on the second day of the spontaneous period or a withdrawal bleeding.
2. Fasting blood was taken to determine the examination of metabolic and safety profile, including fasting blood glucose, insulin, C-peptide, HbA1c, triglycerides, total cholesterol, high density lipoprotein (HDL-C), low density lipoprotein (LDL-C), CBC, Renal, and Liver Profile.
3. The oral glucose tolerance test (OGTT) with 75 g glucose will be performed in all subjects after an overnight fast. Blood samples will be obtained to measure plasma glucose and serum insulin at 0, 60, and 120 min during the OGTT.

1.3.6 Complete questionnaires Quality of life will be assessed by the short form 36(SF-36), the Chinese Quality of Life (ChiQOL), sleeping questionnaires and the Polycystic Ovary Syndrome Questionnaire (PCOS-QOL). Investigators will also assess symptoms of anxiety and depression by the Zung SAS and Zung SDS questionnaires. And complete the quantization table of traditional Chinese medicine (TCM) syndromes about PCOS.

1.3.7 Exclusion of other infertility factors of the couple The semen analysis of the husband and tubal patency of the patient will be assessed.

1.3.8 Preconception counseling Complete the questionnaire of risk factors for genetic disorders, TORCH screening (Toxoplasmosis, Rubella, Cytomegalo Virus, and Herpes Virus) and HIV screening, and folic acid prescription.

1.3.9 Progestin withdrawal Provide progestin prescription to induce withdrawal bleed, with instructions to begin medication once eligibility is determined.

1.4 Baseline visit 1.4.1 Distribute home pregnancy test 1.4.2 Distribute folate 1.4.3 Distribute intercourse and menstrual journal logs 1.4.4 Take blood sample for repository and DNA Collect 20ml blood, and distributed store 10ml blood after serum separation. Other 10ml blood is for determination of DNA.

1.5 Intervention arms

Eligible patients will be randomized into one of the two arms:

Treatment group: i.e. a 16 week acupuncture pretreatment followed by LE. Acupuncture treatment will start on day 3-5 after a spontaneous period or after a withdrawal bleeding following progestin. All subjects will be requested to use contraception during the 16 week acupuncture pretreatment. They will receive acupuncture treatment three times a week. Each treatment session lasts for 30 minutes and can be separated by an interval of 1-3 days, with a maximum of 48 treatment sessions during 16 weeks. After 16 weeks of acupuncture treatment, LE will start on day 2-3 after a spontaneous period or after a withdrawal bleeding after progestin administration. The subjects will be instructed to have intercourse on a regular basis during the cycles.

Control group: i.e. LE alone. LE will be started on day 3-5 after a spontaneous period or a withdrawal bleeding following progestin. The subjects will be instructed to have intercourse on a regular basis during the cycles.

1.5.1 Acupuncture protocol Investigators base the rationale of acupuncture protocols on Western Medical theories and the study protocol follows the CONSORT and STRICTA recommendations with detailed descriptions of the treatment including number of needle used, how needles will be stimulated (manual, electrical), frequency of sessions, and length of treatment period. Investigators will use fixed acupuncture protocols.

Disposable, single-use, sterilized needles made of stainless steel, 0.25 x 30 mm and 0.30 x 40/50 mm (Hwoto, Suzhou Medical Appliance Fact. 215005 Suzhou, China) will be inserted to a depth of 15-35 mm in segmental acupuncture points located in abdominal and leg muscles with innervations corresponding to the ovaries. Two sets of acupuncture points will be alternated every second treatment. The first set consists of conception vessel (CV) 3, CV 12, and stomach (ST) 29 bilaterally and in the muscles above the knee, ST 34, and ST 33 bilaterally and below the knee, spleen (SP) 6 and ST 36. Needles will also be placed in extra segmental acupuncture points that do not innervate the ovaries large intestine (LI) 4 bilaterally. In total 14 needles will be placed and all will be stimulated manually by rotating the needle to evoke needle sensation (de qi) once when inserted. The following points will be connected to an electrical stimulator (Export Abteilung, Schwa-Medico GmbH, Wetzlarer Str. 41-43; 35630 Ehringshausen): CV 3 to CV 12, ST 29 bilateral, and ST34 to ST 33 bilateral. Stimulation are given as low-frequency EA of 2Hz, 0.3 ms pulse length and with an intensity adjusted to produce local muscle contractions without pain or discomfort. Needles not connected to the electrical stimulator will be manually stimulated to evoke needle sensation every 10 min, in total 4 times. The second set consists of 14 needles placed in segmental abdominal points and stimulated electrically: ST 27 bilaterally, CV6 connected to CV10; and leg points: SP10 connected to a non-acupuncture point located 6 cun proximal of patellas medial border (electrical stimulation), and SP 6 and liver (LR) 3 bilaterally (manual stimulation). Extra segmental points are pericardium (PC) 6 bilaterally (manual stimulation).

1.5.2 Needle insertion technique Needle insertion should be gentle. Tighten the skin by pressing around the area of needle insertion and gently insert the needle. Don't do it too quickly, be gentle.

1.5.3 Needles and stimulation Needles are for single use. Needle size: 0.25x30 mm or 0.30 x 40 or 0.30 x 50 mm. Select needle length with respect to the patients BMI. If the patient has a low BMI and is thin use the 0.25 x 30 mm needle. If the patient is overweight, use the 0.30 x 40 mm needles. Obese patients, use needle with the size 0.30 x 50 or 75 mm. Depth of insertion may vary from patient to patient. They should be placed with a depth deep enough to reach muscle/fibrous tissue. When needle are inserted, stimulate the needle gently until de qi (needle sensation reflecting activation of sensory afferents). As soon as de qi has been reached, make sure that the needle doesn't hurt or cause any pain and discomfort.

Attach the electrodes according to the protocol. Turn on the stimulator (program 10) and increase the intensity. Instructions to the patient: "As high as possible but with no pain or discomfort". Don't start with too intensive stimulation. After 10 minutes, stimulate needles without electricity and ask if the intensity of the electrical stimulation is ok, or if it should be increased/decreased. Repeat after 20 minutes and again after 30 minutes. Turn off the stimulator and release the patient.

1.5.4 Acupuncture treatment

1. Record time of the day and acupuncturist name when the patient receives acupuncture.
2. Note the intensity of stimulation (mA). It may vary between the different electrodes. Note the range e.g. 1.2 - 3.0 mA.
3. Note any other events that may affect the treatment (positive or negative).
4. Note concomitant medications.
5. Collect menstrual and intercourse journal logs at the end of every cycle.
6. Check urine pregnancy test before each acupuncture treatment. If pregnancy test is positive, no acupuncture treatment should be performed.

1.5.5 Letrozole After 16 weeks of acupuncture pretreatment, which the patients in the intervention group and the patients in the control group will receive LE (Femara, Novartis Pharmaceuticals), starting from 2.5mg daily from day 2-3 for 5 days after a withdrawal bleeding. Participants are treated for up to 4 cycles. If the patient is pregnant, the treatment should be stopped.

If there is evidence of ovulation (i.e. serum progesterone level on the 3th week was higher than 3 ng/mL) or delayed one week, this dose will be maintained. In patients with no ovulatory response, the dose will be increased to LE 5mg a day for five days until LE 7.5 mg per day for five days will be reached. The same LE dose will be continued in the next cycle if the patients are shown to be ovulating. And the maximum daily dose of LE is 7.5 mg (three pills) daily.

1.6 Monitoring and examination during the treatment And all subjects will be instructed to have intercourse on a regular basis during the entire study period. The optimal frequency will be once every 2-3 days. Urine pregnancy test will be checked before each acupuncture treatment of ovulation. And serum progesterone level test will be checked in the local lab at day on the 3th week of the first cycle and every week of the last three cycles.

The transvaginal ultrasound exam will take place in the anticipated luteal phase of the cycle, and initially will be scheduled 3 weeks after the initiation of medication, with a window of 4 days on either side of this day (i.e. Day 17-25, assuming a Day 3 medication start, or Day 19-27, assuming a Day 5 start). The ultrasound includes the endometrial thickness and echogenicity, as well as the number, size, and echogenic characteristics of follicles/cysts on the ovary (including an antral follicle count).

Investigators can decide whether the patients have the ovulation respond based on the results of serum progesterone level and transvaginal ultrasound. There will be three possible scenarios: ovulation, ovulation delay and non-ovulation. 1) Ovulation, i.e. serum progesterone level on the 3th week was higher than 3 ng/mL, and ultrasound may provide presumptive evidence of ovulation. Check urine pregnancy test to exclude pregnancy and start with LE tablet on day 3-5 of menstruation, and the dose of which will be maintained; 2) Ovulation delay, P\<3 ng/mL, but the ultrasound will show there is evidence of follicular development, (i.e. a follicle with a mean diameter ≥12 mm). Investigators can wait for one more week and continue the acupuncture treatment. Check urine pregnancy test to exclude pregnancy and start with LE tablet on day 3-5 of menstruation, and the dose of which will be maintained; 3) Non-ovulation, P\<3 ng/mL, and the ultrasound will not found any follicle with a mean diameter ≥12 mm. The patient will also receive LE tablet on day 3-5 of her cycle, and she will be instructed to increase her study drug by one tablet per day for five days.

Every menstruation should be detailed recorded, including the date, volume and duration of menstruation.

1.7 End of pre-treatment visit

1) Repeat OGTT. 2) Collect menstrual journal logs. 1.8 Pregnancy visit(only with conception)

1. Complete adverse event query.
2. Take blood for serum quantitative hCG levels until the ultrasound can observe the gestational sacs (1500-2000IU/ml).
3. Perform transvaginal ultrasound for the number of gestational sacs, location, dimensions, presence and size of fetal parts, and documentation of visualization of fetal heart motion, documentation of any pregnancy related abnormalities when hCG levels or clinical manifestations appear as pregnancy.

1.9 End of treatment visit

1. Perform physical examination, including vital signs, height, weight, hip and waist measurements as well as repeating hirsutism and acne assessments after the end of treatment or pregnancy.
2. Repeat the serum levels of sex hormone steroids and metabolic profile.
3. Repeat OGTT.
4. Collect 20ml blood, and distributed store 10ml blood after serum separation. Other 10ml blood is for determination of DNA.
5. Repeat QOL, sleeping, anxiety/depression questionnaires, and the quantization table of TCM.
6. Collect menstrual and intercourse journal logs.
7. Record adverse events and concomitant medications.
8. Arrange follow up for subjects who have conceived and obtain release of records for pregnancy and neonatal records.

1.10 Follow up visit For those women who have an ongoing pregnancy, arrangements will be made to follow the outcome of the pregnancy at the end of first trimester and also after delivery or termination of gestation. All pregnancies (including multiples) will be followed to monitor the weight, glucose tolerance, blood pressure and fetal growth and to determine the abortion rate, complication rates and pregnancy outcomes. The glucose tolerance will be test by glucose screening test with 75 g glucose performed in all pregnancies at 24-28 weeks of pregnancy. Patients will be informed to notify study personnel of the outcome of the pregnancy and investigators will obtain release of record forms from treating physicians to obtain copies of relevant medical records. Delivery records of both mother and newborn will be requested to determine the birth weight, length of gestation, and any prenatal complication of mother or neonatal complication of the infant. Phone contacts will be initiated if the patient has not contacted study personnel by six weeks beyond the original estimated date of confinement.

And investigators will collect pregnancy outcome data. Investigators will track the outcomes of all subjects who have a positive serum pregnancy screen during the course of this study. Investigators will record biochemical pregnancies (defined as positive serum pregnancy screens without ultrasonically detected pregnancies), ectopic pregnancies, and all intrauterine pregnancy losses both before and after 20 weeks including missed abortions, spontaneous abortions, elective abortions, fetal demises, and stillbirths. Investigators will review pregnancy and birth records of the mother and of the fetus to establish neonatal morbidity and mortality and the presence of fetal anomalies. Investigators will extract from these records concomitant medical and obstetrical conditions, exposure information on all other medical products used, including prescription products, over-the-counter (OTC) products, dietary supplements, vaccines, and insertable or implantable medical devices. Investigators will file individual case reports for all congenital anomalies, which will be considered a serious adverse event.

1.11 Safety analysis Adverse events will be categorized and percentage of patients experiencing adverse events and serious adverse events during the treatment period will be documented. Chi-square tests will be performed to examine differences in the proportion of total and categories of adverse events.

1.12 Statistical tests One sample of the Kolmogorov-Smirnov test will be used to test the normal distribution of continuous variables. Continuous variables will be shown as means ± standard deviations if they are normally distributed or as medians with interquartile ranges if they are not normally distributed. Statistical comparison will be carried out according to the intention to treat by Student's t-test, Mann-Whitney U-test, and Wilcoxon signed ranks test for continuous variables and by χ2 tests for categorical variables where appropriate. All statistical analyses of the data will be performed using the SPSS program version 21.0 (SPSS Inc., Chicago, IL, USA), and a P-value \< 0.05 will be considered statistically significant.

The Clinical Trial of Acupuncture Pre-treatment on PCOS

Effect of Acupuncture Pre-treatment Combined With Letrozole on Live Birth in Infertile Women With Polycystic Ovary Syndrome

Loss of an intrauterine pregnancy before 20 completed weeks of gestation

Glucose and insulin concentrations, C-peptide, HbA1c, cholesterol, triglycerides, HDL-C and LDL-C

Weight, BMI, waist-to-hip circumference, FG and acne lesion counts

SF-36, ChiQOL, sleeping questionnaires, PCOS-QOL, Zung SAS, Zung SDS questionnaires and the quantization table of TCM syndromes about PCOS.

The University of Hong Kong

Karolinska Institutet

Xuzhou Maternity and Child Health Care Hospital

Hexian Memorial Affiliated Hospital of Southern Medical University

The First Affiliated Hospital of Guangzhou Medical University

Professor

2.5 mg letrozole daily from day 5 of the menses for 5 days for month 1 to 3, 5.0 mg letrozole daily from day 5 of the menses for 5 days for month 4 to 6.

Chinese herbal medicine granules or Chinese herbal medicine granules placebo

Lihui Hou, MD

Xiaoke Wu, MD. PhD

Muer An, MD

Lihui Hou, MD.

Xiaoguang Shao, MD

Xin Sun, MD

This is a multicenter double-blind randomized controlled trial. A total of 420 anovulatory Chinese women with PCOS will be recruited, and the randomization will be stratified by each participating site. Participants will be randomized into one of the two treatment arms: letrozole and CHMG or letrozole and CHMG placebo. CHMG or its placebo will be taken twice a day for up to six months. Letrozole (2.5 mg daily) was given on days 3-7 of the menstrual cycle after a spontaneous period or withdrawal bleeding, and the dose will be increased to 5.0 mg daily during the last three months for non-pregnant women in both groups.The aim of the present study is to determine the efficacy of combined treatment with letrozole and CHMG on improving live birth rates in infertile Chinese women with PCOS. Our hypothesis is that the combination of letrozole and CHMG is more likely to increase the ovulation rate and decrease the miscarriage rate and result in a higher live birth rate in PCOS women than letrozole alone.

Letrozole Versus Chinese Herbal Medicine on Polycystic Ovary Syndrome (PCOS)

The Effects of Chinese Herbal Medicine and Letrozole on Live Birth in Infertile Women With Polycystic Ovary Syndrome:A Double-blind Randomized Controlled Trial

Follicle-stimulating hormone, luteinizing hormone, total testosterone, sex hormone binding globulin, and dehydroepiandrosterone sulphate.

glucose and insulin concentrations, cholesterol, triglycerides, high-density lipoprotein cholesterol and low-density lipoprotein cholesterol.

weight, vital signs, and hip and waist measurements.

gestational diabetes, pregnancy-induced hypertension, intrauterine growth retardation, ectopic pregnancy, congenital anomaly, preeclampsia, preterm labor, HELLP syndrome, preterm premature rupture of membranes, placental abruption, placenta accreta, placenta previa, postpartum hemorrhage, and others.

renal and liver function tests and complete blood count.

The major risks to the subject are side effects from letrozole and CHMG and the risks associated with pregnancy.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Letrozole Versus Hormonal Preparation in Frozen Cycles of PCOS Patients.	NCT05168865	Frozen Embryo T... Polycystic Ovar... Letrozole Hormone Replace... Live Birth Miscarriage	Letrozole 2.5mg	20 Years - 40 Years	Dubai Fertility Center
The Clinical Trial of Acupuncture Pre-treatment on PCOS	NCT02491320	Polycystic Ovar...	Pre-treatment a... Letrozole	20 Years - 40 Years	The First Affiliated Hospital of Guangzhou Medical University
Letrozole Versus Chinese Herbal Medicine on Polycystic Ovary Syndrome (PCOS)	NCT01431352	Polycystic Ovar...	Letrozole Chinese herbal ...	20 Years - 40 Years	Heilongjiang University of Chinese Medicine

Spots Global Cancer Trial Database for live birth

Every month we try and update this database with for live birth cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Spots Global Cancer Trial Database for live birth

Every month we try and update this database with for live birth cancer trials from around the world to help patients and their families find trials that might be right for them. We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.

Every month we try and update this database with for live birth cancer trials from around the world to help patients and their families find trials that might be right for them.
We offer this 100% free of charge and do not endorse any of the trials listed here, we hope it helps you or a loved one.