Clinical Trials

Sotuletinib (BLZ945) has been evaluated in several Phase 1, Phase 1/2, and Phase 2 clinical trials, sponsored primarily by Novartis Pharmaceuticals. These studies assess the safety, tolerability, and therapeutic efficacy of the compound—administered alone or in combination—for advanced solid tumors and neurodegenerative conditions such as Amyotrophic Lateral Sclerosis (ALS). Across these oncology and neuroinflammatory trials, recruitment statuses are reported as active, not recruiting, or terminated.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT04066244 TERMINATED
Amyotrophic Lateral Sclerosis
Novartis Pharmaceuticals
2019-12-30 PHASE2
NCT02829723 TERMINATED
Advanced Solid Tumors
Novartis Pharmaceuticals
2016-10-21 PHASE1; PHASE2
NCT04066244 Active not recruiting
Amyotrophic Lateral Sclerosis
Novartis Pharmaceuticals|Novartis
2019-12-30 Phase 2
NCT02829723 Terminated
Advanced Solid Tumors
Novartis Pharmaceuticals|Novartis
2016-10-21 Phase 1|Phase 2

(data from https://clinicaltrials.gov, updated on 2025-10-16)

Check the Sotuletinib (BLZ945) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Sotuletinib (BLZ945) functions as a potent, selective colony-stimulating factor 1 receptor (CSF-1R) inhibitor that binds the receptor to block auto-phosphorylation and downstream survival signaling in myeloid cells. By depleting tumor-associated macrophages and modulating hyperactive microglial responses, this mechanistic blockade reduces neuroinflammation and alters the immunosuppressive tumor microenvironment in clinical contexts such as Amyotrophic Lateral Sclerosis and advanced solid tumors.

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.