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Estradiol

Phase 2

Estrogen Receptor Positive Breast Cancer | Small molecule | Oncology |Avalon GloboCare Corp.|Last Updated: Jun 26, 2025

Target and mechanism

Molecular targetESR1
Target classAgonist
ModalitySmall molecule
ChEMBLCHEMBL135

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDBiomarker
Total Trials1
Total Enrollment19

FDA Designations

No designations recorded

Clinical trial landscape

Estradiol · 1 trial · 1 indication

Phase 2 1
NCT02238808A Study to See Whether Estrogen Can Slow the Growth of Some ER Positive Breast CancersEstrogen Receptor Positive Breast Cancer
ACTIVE NOT_RECRUITING19 Analytics
PHASE2ACTIVE NOT_RECRUITING
A Study to See Whether Estrogen Can Slow the Growth of Some ER Positive Breast Cancers
Estrogen Receptor Positive Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

To assess changes in breast cancer proliferation after a 7-14 day trial of estradiol in newly diagnosed estrogen receptor positive post-menopausal breast cancer patients prior to surgery.
end of 7-14 day treatment with estradiol

Secondary Endpoints

Exploratory analysis of biologic correlates with comparison to available genotyping tests
end of 7-14 day treatment with estradiol
Analysis of recurrence/survival data based on initial Ki67 response to 7-14 day trial of estradiol.
10 years
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Estradiol treatmentEXPERIMENTALEstradiol 6 mg daily for 7-14 days

Interventions

NameTypeDescription
EstradiolDRUGEligible participants will take 2 mg Estradiol 3 times daily for 7-14 days pre-surgery.
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Eligibility Criteria

Age Range55 Years to N/A
SexFEMALE
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: * Female gender * Estrogen receptor positive (ER+) breast cancer * HER2 negative breast cancer * Post-menopausal by greater than 5 years * No previous hormonal replacement therapy * Low to intermediate histologic grade * ECOG Performance status of 0 of 1 * Adequate hematological...

Countries:Canada
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Frequently asked questions about Estradiol

What is Estradiol used for in Estrogen Receptor Positive Breast Cancer?

Estradiol is being studied as a treatment for Estrogen Receptor Positive Breast Cancer. It is an investigational small molecule in Phase 2 clinical development. The drug is being evaluated in a single-arm, open-label trial to determine whether estrogen can slow the growth of certain ER-positive breast cancers.

What does Estradiol target?

Estradiol targets the estrogen receptor, which is present in estrogen receptor positive breast cancer cells. By interacting with this receptor, the drug is intended to potentially slow the growth of these cancer cells. The ongoing clinical trial is specifically designed to assess this effect in postmenopausal women.

Who is developing Estradiol?

Estradiol is being developed by Avalon GloboCare Corp., a biopharmaceutical company. The company is conducting a Phase 2 clinical trial of Estradiol for Estrogen Receptor Positive Breast Cancer. Avalon GloboCare Corp. is publicly traded under the ticker symbol ALBT.

What phase is Estradiol in?

Estradiol is currently in Phase 2 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 2 trial is active but not recruiting participants, with a planned enrollment of 19 patients.

What clinical trials is Estradiol in?

Estradiol is being evaluated in a Phase 2 clinical trial with the identifier NCT02238808. The trial is titled 'A Study to See Whether Estrogen Can Slow the Growth of Some ER Positive Breast Cancers.' It is an uncontrolled, open-label study conducted in Canada, enrolling women aged 55 years and older.

Is Estradiol the same as estrogen?

Yes, Estradiol is a form of estrogen. It is a naturally occurring estrogen hormone being repurposed as a potential cancer therapy. In the context of this clinical trial, Estradiol is being investigated for its ability to slow the growth of estrogen receptor positive breast cancer cells.