Clinical Trials

Multiple completed Phase II clinical trials have evaluated intraprostatic depot formulations of hydroxyflutamide, such as Liproca Depot, in patients with prostate cancer. Sponsored by Lidds AB in collaboration with Uppsala University and CMX Research, these fully recruited studies assessed safety, tolerability, dose-finding, and local antitumor efficacy. Together, these clinical investigations demonstrate the potential of controlled-release hydroxyflutamide as a localized therapeutic intervention.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT03348527 Completed
Prostate Cancer
Lidds AB|CMX Research
2017-05-12 Phase 2
NCT02341404 Completed
Prostate Cancer
Lidds AB|Uppsala University
2012-05 Phase 2

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

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

Compliance for Clinical Use

Mechanism and Biochemical Profile

Hydroxyflutamide functions as an androgen receptor antagonist with an IC50 of 0.7 μM, competitively binding to the receptor to prevent androgen-mediated gene transcription and downstream biochemical signaling. This receptor blockade disrupts androgen-dependent survival pathways and suppresses tumor cell proliferation, thereby demonstrating therapeutic relevance against prostate cancer.

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.