Clinical Trials

Genentech Inc. sponsored several clinical trials evaluating brilanestrant (GDC-0810) across Phase 1, Phase 2, and combined Phase 1/2 designs. Early-stage Phase 1 studies assessing pharmacokinetics and drug interactions in healthy female subjects successfully reached completion. In contrast, clinical evaluations in advanced breast cancer patient populations, including Phase 2 and Phase 1/2 combination studies, were terminated prior to full completion.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02802670 Completed
Healthy Volunteers
Genentech Inc.
2016-05 Phase 1
NCT02621957 Completed
Breast Cancer
Genentech Inc.
2015-12 Phase 1
NCT02569801 Terminated
Breast Cancer
Genentech Inc.
2015-12-04 Phase 2
NCT01823835 Terminated
Breast Cancer
Genentech Inc.
2014-12-29 Phase 1|Phase 2

(data from https://clinicaltrials.gov, updated on 2024-05-22)

Check the Brilanestrant (GDC-0810) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Brilanestrant (GDC-0810) functions as a selective estrogen receptor degrader that directly binds to estrogen receptor-alpha with nanomolar affinity to act as a full transcriptional antagonist. By inducing target receptor degradation and suppressing downstream estrogen-mediated gene transcription, the compound impairs tumor cell viability, directly suppressing proliferation in estrogen receptor-positive breast cancer models investigated in clinical trials.

Appendix RUO and cGMP Quality Standards

Quality Dimension RUO (Research Use Only) cGMP (Current Good Manufacturing Practice)
Clinical Applicability Prohibited in human clinical trials or medical diagnostics. Mandatory for human clinical trials (Phase I–III) and therapies.
Regulatory Status Non-regulated grade; exempt from drug manufacturing laws. Legally enforced by health authorities (e.g., FDA, EMA, NMPA).
Facility Environment Unclassified analytical or research laboratories. Validated Cleanrooms (ISO Class 5–8) with continuous monitoring.
Quality Control Basic purity and activity testing. Rigorous safety release testing (Sterility, Endotoxin, Mycoplasma).
Process Validation Basic equipment calibration; no process validation required. Full qualification (IQ/OQ/PQ) and complete batch records.
Quality Assurance Vendor self-declared without required formal QMS. Mandatory QA/QC unit, Change Control, CAPA, and vendor audits.
Regulatory Impact High risk of IND rejection if used as a critical raw material. Required for IND/NDA filings, supported by Drug Master Files (DMF).

Footnotes

Regulatory Note: Governed by FDA (21 CFR Parts 210/211/312), EMA (EudraLex Vol 4), ICH Guidelines (E6/Q7/Q9/Q10), and compendial standards (USP <71>/<85>/<1043>).

Note: Technical data last updated: Sep 1, 2026.