Clinical Trials

Multiple clinical trials evaluate Subasumstat (TAK-981), a selective inhibitor of the SUMOylation cascade, across early-phase to Phase I/II studies sponsored primarily by industry entities including Takeda and Presage Biosciences. Targeting oncology indications such as advanced solid tumors, non-Hodgkin lymphoma, relapsed or refractory multiple myeloma, and head and neck cancer, these studies encompass completed, active not recruiting, and terminated recruitment statuses. Overall, these investigations aim to determine the safety, pharmacokinetics, and preliminary therapeutic efficacy of TAK-981, including combination regimens with pembrolizumab or rituximab.

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT04381650 COMPLETED
Advanced or Metastatic Solid Tumors
Takeda
2020-08-17 PHASE1; PHASE2
NCT05976334 TERMINATED
Solid Tumors
Takeda
2023-11-14 PHASE1
NCT03648372 TERMINATED
Neoplasms; Lymphoma; Hematologic Neoplasms
Takeda
2018-10-01 PHASE1; PHASE2
NCT04776018 TERMINATED
Relapsed and/or Refractory Multiple Myeloma (RRMM)
Takeda
2021-04-20 PHASE1; PHASE2
NCT04074330 TERMINATED
Lymphoma, Non-Hodgkin
Takeda
2019-10-15 PHASE1; PHASE2
NCT04065555 COMPLETED
Head and Neck Cancer
Presage Biosciences
2020-10-07 EARLY_PHASE1
NCT04381650 Active not recruiting
Advanced or Metastatic Solid Tumors
Takeda|Takeda Development Center Americas Inc.
2020-08-17 Phase 1|Phase 2
NCT04074330 Terminated
Lymphoma Non-Hodgkin
Takeda
2019-10-15 Phase 1|Phase 2
NCT03648372 Terminated
Neoplasms|Lymphoma|Hematologic Neoplasms
Takeda
2018-10-01 Phase 1|Phase 2

(data from https://clinicaltrials.gov, updated on 2025-12-10)

Check the Subasumstat (TAK-981) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Compliance for Clinical Use

Mechanism and Biochemical Profile

Subasumstat (TAK-981) selectively binds to and inhibits the SUMOylation enzymatic cascade, thereby blocking the post-translational modification of target proteins essential for oncogenic signaling and cellular survival. This blockade triggers immune-activating and pro-apoptotic cellular pathways, providing antitumor efficacy relevant to the treatment of advanced solid tumors, non-Hodgkin lymphoma, and multiple myeloma.

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.