Asundexian Drug Asset Due Diligence Report 2026: Clinical, IP, Market, Deals, and Go/No-Go
This Asundexian Drug Asset Due Diligence Report was built with PatSnap Life Sciences MCP workflows. Drug & Asset MCP establishes identity, ownership and stage; Clinical Trials MCP checks design, endpoints and readouts; Company & Deal Intelligence MCP reconstructs transaction precedent. Explore the MCP servers used in this report.
Decision date: 15 July 2026. Currency fields are presented in US$ millions as returned by the deal dataset. This is a screening memorandum, not legal, medical, patent or investment advice.
NDA/BLA
Highest phase
13
Registered trials
14
Result records
5
Matched deals
Executive recommendation: GO
Decision memo
Advance diligence: development maturity and available evidence support continued investment, subject to indication-specific safety, IP, and commercial gates.
The central underwriting question is whether Asundexian can convert its Small molecule drug profile and FXIa biology into clinically meaningful differentiation while preserving an investable safety, IP and commercial position.
1. Asset identity and development status
| Asset | Asundexian (query alias: asundexian) |
|---|---|
| Modality / target | Small molecule drug; FXIa; factor XIa inhibitors |
| Highest global status | NDA/BLA |
| Originator | Bayer AG |
| Active developers | Bayer AG, Bayer Healthcare Co., Ltd. |
The MCP disease footprint includes Ischemic stroke, Acute Ischemic Stroke, Ischemic Attack, Transient. The highest-phase flag is a useful orientation point, but the licensing case depends on indication-level evidence and rights, not the global label alone.
2. Clinical program: design and endpoint audit
| Registry | Phase | Status | Enrollment | Lead primary endpoint |
|---|---|---|---|---|
| NCT05643573 | Phase 3 | Terminated | 14830 | Number of Participants With Composite of Stroke or Systemic Embolism |
| NCT05686070 | Phase 3 | Completed | 12327 | Time to first occurrence of ischemic stroke |
| CTR20200336 | Phase 1 | 已完成 | 36 | Not disclosed |
The trial set should be diligenced for randomization, comparator relevance, endpoint hierarchy, analysis population, multiplicity, geographic mix and readout timing. For early-stage studies, safety and dose selection can be as decision-critical as response rate.
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3. Clinical readouts: what is known
Asundexian for Secondary Stroke Prevention
Phase 3; n=12327; evaluation: Positive. Reported fields: Ischemic stroke = 8.4 % ; Ischemic stroke = 6.2 %
Bayer’s asundexian demonstrated a substantial, 26 percent reduction in stroke after a non-cardioembolic ischemic stroke or high-risk transient ischemic attack with no increase in ISTH major bleeding versus placebo
Phase 3; n=12327; evaluation: Positive. Reported fields: Major bleeding(International Society on Thrombosis and Hemostasis) = 1.7 % ; Major bleeding(International Society on Thrombosis and Hemostasis) = 1.9 %
Bayer’s Asundexian Met Primary Efficacy and Safety Endpoints in Landmark Phase III OCEANIC-STROKE Study in Secondary Stroke Prevention
Phase 3; n=not disclosed; evaluation: Positive. Reported fields: occurrence of ischemic stroke = Asundexian 50 mg once daily significantly reduced Met; occurrence of ischemic stroke = Asundexian 50 mg once daily significantly reduced Met
These fields are structured evidence signals, not a substitute for statistical review. The next diligence pass should reconcile denominators, confidence intervals, follow-up, censoring, dose cohorts and treatment-emergent toxicity against the original abstract, registry and protocol.
4. Market and competitive position
Asundexian addresses Ischemic stroke, Acute Ischemic Stroke, Ischemic Attack, Transient. Commercial attractiveness rests on addressable biomarker-positive patients, treatment-line placement, duration, administration burden, pricing and displacement of entrenched standards. The modality—Small molecule drug—must demonstrate a benefit large enough to offset class-specific safety and operational costs.
The strongest market-validation signal in this screen is partner behavior: 5 matched transaction record(s) indicate that sophisticated counterparties have assigned strategic value to the asset or its rights. That does not establish net present value; probability of success, remaining R&D spend, royalties, cost sharing and territorial scope still need modeling.
5. Transaction precedent and economics
Transaction-scope note: No direct asset-specific transaction was returned. The table below shows target-level comparable: FXIa records as comparable precedents only.
| Date | Transaction | Phase at deal | Disclosed economics |
|---|---|---|---|
| 2025-09-15 | Cadrenal Therapeutics Enhances Anticoagulation Pipeline Through Acquisition of eXIthera’s Portfolio of Factor XIa Inhibitors | Phase 2 | US$15.0M milestones |
| 2019-04-07 | XOMA purchases royalty rights for Aronora's five hematology assets, which include BAY-1213790, BAY-1831865, AB-023, AB-002, and AB-054. | Not disclosed | US$6.0M upfront; US$3.0M milestones; US$9.0M stated total |
| 2019-04-02 | Sichuan Haisco partners with eXIthera to develop EP-7041 for knee injury in China. | Phase 1 | US$6.0M stated total |
Headline values are not directly comparable. Diligence should normalize upfront cash, equity, development and sales milestones, tiered royalties, opt-in mechanics, cost sharing, change-of-control clauses and geography.
6. IP and freedom-to-operate screen
No asset-specific patent-application milestone appeared in the returned milestone slice. That absence is not a freedom-to-operate conclusion; a dedicated family, claim, ownership, expiry, and legal-status search remains mandatory before signing.
The claim chart should separately test composition or sequence coverage, formulation and dosing, indication and biomarker claims, combinations, manufacturing know-how, prosecution history, term extensions and third-party blocking rights. Confirm that licensed patents, data and know-how track every granted territory and field.
7. Principal risks and diligence gates
- Therapeutic index across KRAS/BRAF mutation subgroups
- On-target toxicity and adaptive MAPK resistance
- Lack of matched efficacy results in the current MCP result set
Cross-functional diligence should also test CMC comparability, supply chain, pharmacovigilance, regulatory correspondence, data integrity, investigator concentration, partner obligations and change-of-control restrictions.
8. Final go/no-go memorandum
GO
Advance diligence: development maturity and available evidence support continued investment, subject to indication-specific safety, IP, and commercial gates.
Required pre-signing gates: reproduce key efficacy analyses; complete an indication-specific safety review; run a full patent-family and freedom-to-operate search; model risk-adjusted economics by territory; and reconcile all rights, sublicenses and encumbrances.
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Data provenance: PatSnap Drug & Asset MCP, Clinical Trials MCP, and Company & Deal Intelligence MCP; accessed 15 July 2026. Counts and status fields may change as source records update.
