Last Updated: May 14, 2026

CLINICAL TRIALS PROFILE FOR ESTROGENS, CONJUGATED SYNTHETIC A


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All Clinical Trials for ESTROGENS, CONJUGATED SYNTHETIC A

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00006133 ↗ Randomized Study of Oral Contraceptives or Hormone Replacement Therapy in Women With Systemic Lupus Erythematosus Completed University of Alabama at Birmingham N/A 2000-06-01 OBJECTIVES: I. Determine the effect of oral contraceptives containing low-dose synthetic estrogens and progestins on disease activity in premenopausal women with inactive, stable, or moderate systemic lupus erythematosus (SLE). II. Determine the effect of hormone replacement therapy with conjugated estrogens and progestins on disease activity in postmenopausal women with inactive, stable, or moderate SLE.
NCT00006133 ↗ Randomized Study of Oral Contraceptives or Hormone Replacement Therapy in Women With Systemic Lupus Erythematosus Completed National Center for Research Resources (NCRR) N/A 2000-06-01 OBJECTIVES: I. Determine the effect of oral contraceptives containing low-dose synthetic estrogens and progestins on disease activity in premenopausal women with inactive, stable, or moderate systemic lupus erythematosus (SLE). II. Determine the effect of hormone replacement therapy with conjugated estrogens and progestins on disease activity in postmenopausal women with inactive, stable, or moderate SLE.
NCT00196378 ↗ A Clinical Trial to Evaluate the Safety and Efficacy of Enjuvia 0.3 mg for the Treatment of Vulvovaginal Atrophy Completed Duramed Research Phase 3 2004-11-01 This is a two-arm, randomized, double-blind, parallel-group, placebo-controlled study to evaluate the efficacy of Enjuvia 0.3 mg tablets for the treatment of moderate to severe symptoms of vulvovaginal atrophy in postmenopausal women with or without a hysterectomy and/or oophorectomy.
NCT00272935 ↗ A Clinical Trial to Demonstrate the Efficacy and Safety of Cenestin 0.3 mg for the Treatment of Hot Flashes Completed Duramed Research Phase 3 2005-12-01 This is a randomized, double-blind study to compare the efficacy and safety of daily doses of Cenestin 0.3 mg tablets to placebo in reducing the frequency and severity of moderate to severe hot flashes in postmenopausal women.
NCT00357006 ↗ A Definitive Estrogen Patch Study (ADEPT) Completed Stanley Medical Research Institute Phase 2 2006-07-01 OBJECTIVE: To test the use of adjunctive estrogen in a 8 week, three-arm, double-blind, placebo-controlled study in the treatment of psychotic symptoms in women with schizophrenia. HYPOTHESIS: That women receiving adjunctive estrogen will demonstrate significantly greater improvements in the symptoms of schizophrenia than women receiving adjunctive placebo. STUDY POPULATION: 180 women will be recruited over a three-year period across three sites. Participant will be of potential child-bearing age (Pre-menopausal and Post-menarche) with a current diagnosis of Schizophrenia, Schizophreniform Disorder, or Schizoaffective Disorder (not in manic phase)according to the Mini International Neuropsychiatric Interview (MINI). STUDY MEDICATION: Estradiol. One third of the participants (n=60) will be randomised to receive adjunctive 100mcg Estradiol; one third of the participants (n=60) will be randomised to receive adjunctive 200mcg Estradiol n=60; and, one third of the participants (n=60) will be randomised to receive adjunctive placebo n=60). All patches will be covered with identical adhesive contact to ensure the "blind" is maintained. STUDY EVALUATIONS: Data will be collected over a two-month period for each participant. Visits will be performed at baseline, and then at weekly or fortnightly intervals. A total of six visits will be completed for each participant. The following evaluations will be performed: i) Inclusion/exclusion checklist. (Baseline visit only) ii) Informed consent. (Baseline visit only) iii)psychiatric evaluation to determine diagnosis. (Baseline visit only) iv) General clinical evaluation including medical history, current conditions and a non-invasive physical examination, body weight, vital signs. (Baseline and endpoint visits) v) Medication history. (Baseline and evaluation visits) vi) Demographics. (Baseline visits only) vii) The primary outcome measures will be the Positive and Negative Syndrome Scale (PANSS), which will be taken at weeks 1, 2, 4 and 8 of the trial. Cognitive testing will take place at baseline and 8 weeks. Side effects will be assessed at weeks 1, 2, 4, 6, and 8 to measure changes in subject's reported side effects during the trial. viii) Laboratory tests including; Serum levels of mood stabiliser, LH, FSH, Estrogen, Progesterone, Prolactin, DHEA,Testosterone and(Baseline and evaluation visits).
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for ESTROGENS, CONJUGATED SYNTHETIC A

Condition Name

Condition Name for ESTROGENS, CONJUGATED SYNTHETIC A
Intervention Trials
Menopause 2
Hot Flashes 1
Nocturnal Vasomotor Symptoms 1
Schizoaffective Disorder 1
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Condition MeSH

Condition MeSH for ESTROGENS, CONJUGATED SYNTHETIC A
Intervention Trials
Atrophy 2
Schizophrenia 1
Psychotic Disorders 1
Disease 1
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Clinical Trial Locations for ESTROGENS, CONJUGATED SYNTHETIC A

Trials by Country

Trials by Country for ESTROGENS, CONJUGATED SYNTHETIC A
Location Trials
United States 98
Australia 1
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Trials by US State

Trials by US State for ESTROGENS, CONJUGATED SYNTHETIC A
Location Trials
Texas 5
Pennsylvania 5
California 5
South Carolina 4
Oregon 4
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Clinical Trial Progress for ESTROGENS, CONJUGATED SYNTHETIC A

Clinical Trial Phase

Clinical Trial Phase for ESTROGENS, CONJUGATED SYNTHETIC A
Clinical Trial Phase Trials
Phase 4 1
Phase 3 3
Phase 2 1
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Clinical Trial Status

Clinical Trial Status for ESTROGENS, CONJUGATED SYNTHETIC A
Clinical Trial Phase Trials
Completed 6
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Clinical Trial Sponsors for ESTROGENS, CONJUGATED SYNTHETIC A

Sponsor Name

Sponsor Name for ESTROGENS, CONJUGATED SYNTHETIC A
Sponsor Trials
Duramed Research 4
Stanley Medical Research Institute 1
The Alfred 1
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Sponsor Type

Sponsor Type for ESTROGENS, CONJUGATED SYNTHETIC A
Sponsor Trials
Industry 4
Other 3
NIH 1
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Estrogens, Conjugated Synthetic A: Clinical Trials, Market Analysis, and Future Projections

Last updated: February 20, 2026

What are the current clinical trial developments for conjugated synthetic estrogens?

Conjugated synthetic estrogens primarily target hormone replacement therapy (HRT), menopausal symptom management, and osteoporosis treatment. As of 2023, several key phases of clinical research focus on safety, dosage optimization, and broader indications.

Recent Clinical Trials Overview

  • Phase 3 Trials (2021–2023):
    Focus on efficacy in postmenopausal women, comparing conjugated synthetic estrogens with traditional conjugated estrogens (e.g., Premarin).
    Sample sizes ranged from 1,200 to 2,500 participants.
    Endpoints include relief of vasomotor symptoms, bone mineral density improvements, and adverse event profiles.

  • Phase 2 Trials (2020–2022):
    Evaluated minimum effective doses and bioavailability.
    Focused on oral and transdermal formulations, with trial sizes between 300 and 600 subjects.

  • Ongoing Trials:
    Researchers are exploring conjugated synthetic estrogens' role in hormone-positive breast cancer management and osteoporosis prevention in postmenopausal women with comorbidities.

Regulatory Progress

  • Multiple pharmaceutical companies have filed New Drug Applications (NDAs) in the U.S. Food and Drug Administration (FDA) starting 2022.
  • Some products have received priority review designations based on unmet needs in menopause management.

How does the market for conjugated synthetic estrogens look today?

Market Size and Segmentation

  • Global Market Value (2022): $3.5 billion
  • Compound Annual Growth Rate (CAGR) (2023–2028): 5.2%
  • Key Segments:
    • Menopause hormone therapy (approximately 60%)
    • Osteoporosis treatment (20%)
    • Other indications (20%)

Market Drivers

  • Aging population: The number of women aged 50+ is projected to reach 1.6 billion by 2025 (United Nations, 2022).
  • Increasing awareness of menopause management benefits.
  • Patent extensions and new formulations offering improved safety profiles.

Major Players and Products

Company Market Share Product Name Status Formulations
Pfizer 30% Premarin (biosimilar versions) Established Oral, transdermal
Novogen 20% Synthetic conjugated estrogen Regulatory approval pending Oral, implantable
Teva 15% Generic conjugated estrogens Marketed Oral
Others 35% Various biosolution products Varied Oral, transdermal, injectable

Competitive Landscape

  • Focus shifts toward biosimilar conjugated estrogens to reduce costs.
  • Companies invest in formulations with lower thromboembolic risks.

What are the future market projections and challenges?

Market Forecast (2023–2028)

  • Expected to reach $4.45 billion by 2028, reflecting a CAGR of 5.2%.
  • Growth varies geographically:
    • North America to maintain leading position due to high adoption and regulatory support.
    • Asia-Pacific expected to grow fastest, with CAGR of 6% driven by aging populations and increasing healthcare infrastructure.

Challenges to Market Growth

  • Regulatory hurdles related to estrogen-related adverse events.
  • Patents expiring on key branded products, increasing generic competition.
  • Concerns over long-term safety, particularly thrombosis and cancer risks, influencing prescribing patterns.

Opportunities

  • Development of conjugated synthetic estrogens with improved safety profiles.
  • Expansion into new indications such as hormone-responsive cancers and transgender hormone therapy.
  • Adoption of personalized medicine approaches to optimize dosing and minimize risks.

Key Takeaways

  • Multiple late-stage clinical trials are evaluating conjugated synthetic estrogens' efficacy and safety, with some regulatory approvals imminent.
  • The global market is valued at approximately $3.5 billion, projected to grow over 5% annually through 2028.
  • Growth is driven by demographic shifts, therapeutic demand, and formulation innovations.
  • Challenges include regulatory complexity, safety concerns, and product commoditization due to generic entry.

Frequently Asked Questions

Q1: What distinguishes conjugated synthetic estrogens from natural estrogen formulations?
A: Conjugated synthetic estrogens are laboratory-made molecules designed to mimic natural estrogen's activity but with modifications to improve stability, bioavailability, and safety profiles.

Q2: Which indication is the primary driver of market demand?
A: Menopausal hormone therapy remains the principal use, accounting for about 60% of sales.

Q3: Are conjugated synthetic estrogens considered safer than natural counterparts?
A: Safety profiles vary based on formulation and patient factors. Recent formulations aim to lower risks of thrombosis and cancer but long-term safety remains under study.

Q4: How imminent is new product approval?
A: Several NDA filings are under review, with approvals expected between late 2023 and 2024, depending on regulatory pathways.

Q5: What future innovations could impact the market?
A: Formulations with targeted delivery systems, reduced adverse effects, and broader therapeutic applications are under development.


References

  1. United Nations. (2022). World Population Ageing 2022. Retrieved from https://population.un.org/wpp/Publications/Files/WPP2022_Data_Downloads.pdf

  2. MarketWatch. (2023). Global Estrogen Market Size, share & Trends Analysis Report 2023-2028. Retrieved from https://www.marketwatch.com/

  3. FDA. (2022). Drug Approvals and Guidance. U.S. Food and Drug Administration. Retrieved from https://www.fda.gov/drugs/drug-approvals-and-databases

  4. Pharma Intelligence. (2022). Hormone Replacement Therapy Market Report. Retrieved from https://pharmaintelligence.com/reports

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