Tolinapant Drug Asset Due Diligence Report 2026

This Tolinapant 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: 7 August 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.

Not disclosed

Highest phase

Registered trials

Result records

Matched deals

Executive recommendation: HOLD / OPTION

Decision memo

Preserve optionality until clinical differentiation, transaction economics, and freedom-to-operate are sufficiently de-risked.

The central underwriting question is whether Tolinapant can convert its Not disclosed 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	Tolinapant (query alias: Tolinapant)
Modality / target	Not disclosed; Not disclosed; Not disclosed
Highest global status	Not disclosed
Originator	Not disclosed
Active developers	Not disclosed

The MCP disease footprint includes no disclosed indication. 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
NCT06393751	Phase 1/2	Withdrawn	Not disclosed	Incidence of dose-limiting toxicity (Phase I)
NCT05912075	Phase 1	Recruiting	78	Dose-limiting toxicities (DLTs)
ISRCTN11197711	Phase 1	Suspended	30	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

A Phase I/II, Multicenter, Open-Label, Nonrandomized Study to Evaluate the Tolerability and Safety of ASTX660 and the Efficacy at the Recommended Dose of ASTX660 in Patients With Relapsed or Refractory T-Cell Lymphoma

Phase 1/2; n=8; evaluation: not stated. Reported fields: -; Safety (Phase 1 Dose-escalation Part) - Number of Subjects With Dose-limiting Toxicities (DLTs), AEs, Abnormal Clinical Laboratory Values or Physical Exam Results = 1 Participants ; -

Early-phase trial of IAP antagonist tolinapant and definitive radiation in cisplatin-ineligible patients with previously untreated, locally advanced head and neck cancer

Early Phase 1; n=19; evaluation: Positive. Reported fields: Adverse Event: anorexia = 90% ; Adverse Event: anorexia = 90%

Early-Phase Open-label Study of Tolinapant and Radiation in Cisplatin-Ineligible Patients With Previously Untreated, Locally Advanced Head and Neck Cancer

Early Phase 1; n=10; evaluation: not stated. Reported fields: -; Safety of Tolinapant + Radiation (Number of Patients With Adverse Events Per CTCAE v5.0) = 10 Participants ; -

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

Tolinapant addresses its disclosed development indications. Commercial attractiveness rests on addressable biomarker-positive patients, treatment-line placement, duration, administration burden, pricing and displacement of entrenched standards. The modality—Not disclosed—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: 0 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
No matched asset transaction returned.

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

The milestone feed surfaced a patent-application signal described as “Pharmaceutical compositions including tolinapant and packaging”.

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

HOLD / OPTION