Clinical Trials

Multiple clinical trials ranging from Early Phase 1 to Phase 2 evaluate the biological function and therapeutic applicability of LL-37 in oral and systemic inflammatory and infectious conditions, including periodontitis, peri-implantitis, oral potentially malignant lesions, rosacea, diabetic foot ulcers, and tuberculosis. Predominantly academic endeavors sponsored by institutions such as Universidad Rey Juan Carlos, Cairo University, and the University of California, San Diego, these studies encompass recruitment statuses including completed, not yet recruiting, withdrawn, and terminated. Key completed evaluations have assessed LL-37 levels and pathways in conditions like periodontal disease and rosacea.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT02225366 COMPLETED
Melanoma
M.D. Anderson Cancer Center
2015-07-08 PHASE1; PHASE2
NCT04098562 UNKNOWN
Diabetic Foot Ulcer
Fakultas Kedokteran Universitas Indonesia
2019-10 PHASE2
NCT02806414 COMPLETED
Rosacea
University of California, San Diego
2016-07 PHASE1; PHASE2
NCT03270709 TERMINATED
HIV/AIDS; Vitamin D Deficiency; Smoker Lung
Emory University
2018-04-11 PHASE1
NCT01398280 COMPLETED
Rosacea
University of California, San Diego
2011-07 EARLY_PHASE1
NCT00788320 WITHDRAWN
Tuberculosis
Atlanta VA Medical Center
2008-10

(data from https://clinicaltrials.gov, updated on 2021-12-09)

Check the LL-37 acetate product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

LL-37 acetate binds directly to negatively charged bacterial membrane lipids and host cell surface receptors, inducing membrane permeabilization and altering downstream pro-inflammatory signaling cascades. This membrane disruption and receptor interaction result in rapid microbial cell lysis and attenuated cytokine expression, thereby controlling infection and resolving mucosal inflammation in conditions such as periodontitis, rosacea, and diabetic foot ulcers.

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.