Tick-borne encephalitis vaccine Drug Asset Due Diligence Report 2026: Clinical, IP, Market, Deals, and Go/No-Go
This Tick-borne encephalitis vaccine 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: 23 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.
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 Tick-borne encephalitis vaccine can convert its Prophylactic vaccine profile and Not disclosed biology into clinically meaningful differentiation while preserving an investable safety, IP and commercial position.
1. Asset identity and development status
| Asset | Tick-borne encephalitis vaccine (query alias: Tick-borne encephalitis vaccine) |
|---|---|
| Modality / target | Prophylactic vaccine; Not disclosed; Immunostimulants |
| Highest global status | Approved |
| Originator | Pfizer Ireland Ltd. |
| Active developers | Pfizer Manufacturing Ireland Unlimited Co., Pfizer Japan, Inc. |
The MCP disease footprint includes Encephalitis, Tick-Borne. 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 |
|---|---|---|---|---|
| EUCTR2018-004674-94-LV | Phase 4 | Completed | 400 | The primary endpoint for the primary objective is the %composite response of neutralizing titers against both homologous and heterologous antigens to the vaccines at each visit. The composite response is defined as a subject with NT≥=10 for both Nd and mK23. |
| NCT04573205 | Phase 4 | Unknown status | 90 | Serological response to vaccination with TBE vaccine following primary vaccination |
| EUCTR2012-004231-24-AT | Phase 4 | Completed | 41 | Frequency of TBEV-specific memory B cells measured by limiting dilution analysis |
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
Phase 3 immunogenicity and safety study of a tick-borne encephalitis vaccine in healthy Japanese participants 1 year of age and older.
Phase 3; n=164; evaluation: Positive. Reported fields: AE = 43.1 % ; AE = 15.0 %
A PHASE 3, SINGLE-ARM, OPEN-LABEL STUDY TO EVALUATE THE IMMUNOGENICITY, SAFETY, AND TOLERABILITY OF A TICK-BORNE ENCEPHALITIS VACCINE IN HEALTHY JAPANESE PARTICIPANTS 1 YEAR OF AGE AND OLDER
Phase 3; n=165; evaluation: not stated. Reported fields: Percentage of Seropositive Participants at 4 Weeks After Dose 3 = 100 Percentage of participants (95% Confidence Interval, 94.5 - 100); -; Percentage of Seropositive Participants at 4 Weeks After Dose 3 = 98.0 Percentage of participants (95% Confidence Interval, 92.9 - 99.8)
Seropersistence and booster response following vaccination with FSME-IMMUN in children, adolescents, and young adults.
Phase 4; n=358; evaluation: not stated. Reported fields: Seropositivity rate(1 month post-first booster) = 100 %
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
Tick-borne encephalitis vaccine addresses Encephalitis, Tick-Borne. Commercial attractiveness rests on addressable biomarker-positive patients, treatment-line placement, duration, administration burden, pricing and displacement of entrenched standards. The modality—Prophylactic vaccine—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: 1 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
| Date | Transaction | Phase at deal | Disclosed economics |
|---|---|---|---|
| 2014-07-30 | Baxter Announces Divestiture of Commercial Vaccines Business to Pfizer | Approved | US$635.0M 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
- Class crowding and differentiation versus other PD-(L)1/VEGF agents
- Immune and anti-angiogenic safety, including bleeding and cardiovascular risk
- Biomarker strategy, indication selection, and head-to-head endpoint execution
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 23 July 2026. Counts and status fields may change as source records update.
