Clinical Trials

Multiple clinical trials sponsored by Takeda evaluate zasocitinib (TAK-279) across Phase 1, Phase 2, and Phase 3 stages, with statuses spanning completed, recruiting, and not yet recruiting. Phase 1 studies assess safety, drug-drug interactions, and pharmacokinetics in healthy volunteers and individuals with renal impairment. Mid- and late-stage trials evaluate clinical efficacy in autoimmune and inflammatory conditions, including plaque psoriasis, psoriatic arthritis, palmoplantar psoriasis, hidradenitis suppurativa, nonsegmental vitiligo, Crohn's disease, and ulcerative colitis.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT07250802 RECRUITING
Plaque Psoriasis
Takeda
2025-12-04 PHASE3
NCT06764615 RECRUITING
Crohn's Disease; Ulcerative Colitis
Takeda
2025-05-28 PHASE2
NCT07286058 RECRUITING
Psoriatic Arthritis
Takeda
2026-03-11 PHASE3
NCT07403968 RECRUITING
Crohn's Disease
Takeda
2026-08-13 PHASE2
NCT07244263 RECRUITING
Hidradenitis Suppurativa
Takeda
2026-01-26 PHASE2
NCT07108283 RECRUITING
Nonsegmental Vitiligo
Takeda
2025-11-03 PHASE2
NCT07752108 NOT_YET_RECRUITING
Palmoplantar Psoriasis
Takeda
2026-09-01 PHASE3
NCT06671496 RECRUITING
Psoriatic Arthritis
Takeda
2025-03-10 PHASE3
NCT06671483 RECRUITING
Psoriatic Arthritis
Takeda
2025-03-03 PHASE3
NCT06973291 COMPLETED
Plaque Psoriasis
Takeda
2025-07-09 PHASE3
NCT06793943 COMPLETED
Healthy Volunteers
Takeda
2025-01-23 PHASE1
NCT06111547 Not yet recruiting
Healthy Volunteers
Takeda
2024-05-30 Phase 1
NCT06290050 Recruiting
Healthy Volunteers
Takeda
2024-03-29 Phase 1
NCT06108544 Recruiting
Plaque Psoriasis
Takeda
2023-11-06 Phase 3
NCT06088043 Recruiting
Plaque Psoriasis
Takeda
2023-11-06 Phase 3
NCT05992155 Recruiting
Renal Impairment|Healthy Volunteers
Takeda
2023-09-27 Phase 1

(data from https://clinicaltrials.gov, updated on 2026-07-21)

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

Compliance for Clinical Use

Mechanism and Biochemical Profile

Zasocitinib functions as a selective tyrosine kinase 2 (TYK2) inhibitor that binds to TYK2, thereby blocking receptor-associated transphosphorylation and downstream signal transducer and activator of transcription (STAT) protein activation mediated by interleukin-12, interleukin-23, and type I interferons. By inhibiting these signaling cascades, the compound suppresses pathogenic T-cell activation and cytokine release, leading to reduced tissue inflammation and clinical efficacy in conditions studied in trials, such as plaque psoriasis, psoriatic arthritis, and Crohn's disease.

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.