PF-07826390 in MSS/pMMR/MSI-L Colorectal Carcinoma: NCT06546553 Clinical Landscape Report 2026
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This Clinical Landscape Report was built with PatSnap Life Sciences MCP workflows. Clinical Trials MCP supplies protocol and result records, Drug & Asset MCP adds asset context, and Company & Deal Intelligence MCP resolves sponsor background. Use the same structured MCP building blocks in your research workflow.
Data snapshot: 15 October 2026. This strategic research report is not medical, regulatory or investment advice. Trial status and dates can change.
Phase 1
Clinical phase
Terminated
Recruitment status
not reported
Planned enrollment
2025-10-03
Primary-completion proxy
Executive view
NCT06546553 evaluates PF-07826390 in MSS/pMMR/MSI-L Colorectal Carcinoma. The disclosed sponsor is Pfizer Inc., the design is Interventional, and the geographic footprint is United States. The first listed primary endpoint is PART 1: Number of participants with Dose-limiting toxicities (DLT), assessed over First cycle, Day 1 up to Day 28.
The key landscape question is whether this protocol can generate a clinically interpretable signal relative to nearby programs. Phase alone is not a measure of evidence quality. Endpoint relevance, comparator choice, masking, enrollment feasibility, patient selection, country coverage and follow-up must be considered together.
PatSnap MCP Servers make this assessment reproducible by keeping protocol facts, result evidence, asset attributes and sponsor identity in separate structured calls.
How the MCP evidence stack was assembled
Clinical Trials MCP clinical_trial_fetch retrieved the design, outcomes, phase, status, enrollment, sponsor, countries and timing for NCT06546553 and selected peers. clinical_trial_result_fetch supplied detailed result records from the wider MSS/pMMR/MSI-L Colorectal Carcinoma landscape. Drug & Asset MCP drug_fetch was queried for PF-07826390, while Company & Deal Intelligence MCP organization_fetch was queried for Pfizer Inc..
This separation reduces a common diligence error: treating a registry label, a company description or a result excerpt as if each represented the complete evidence package. Explore the source workflow at the PatSnap MCP marketplace.
Trial landscape table
| Trial | Asset / intervention | Phase / status | Sponsor | Geography | Primary endpoint | Readout proxy |
|---|---|---|---|---|---|---|
| NCT06546553 | PF-07826390 | Phase 1 / Terminated | Pfizer Inc. | United States | PART 1: Number of participants with Dose-limiting toxicities (DLT) First cycle, Day 1 up to Day 28 | 2025-10-03 |
| NCT06708949 | Ipilimumab | Phase 2 / Active, not recruiting | M.D. Anderson International España SA | United States | Safety and Averse events (AEs) Through study completion; an average of 1 year | 2028-12-15 |
| NCT06699602 | Cemiplimab-RWLC | Phase 2 / Recruiting | Memorial Sloan Kettering Cancer Center | United States | response 1 year | 2028-02-01 |
| NCT06690697 | Toripalimab | Phase 2 / Recruiting | Fudan University | China | Overall Response Rate (ORR) 2 years | 2026-06-30 |
| NCT06680089 | [18F]RCCB6 | Phase 2 / Recruiting | Sponsor not reported | China | Biodistribution of [18F]RCCB6 1 day from injection of the tracer | 2026-11-01 |
The table aligns endpoints, sponsors, phases, geographies and readout proxies. It is descriptive, not a head-to-head efficacy comparison. Differences in population, baseline risk, intervention schedule and follow-up can dominate apparent cross-trial differences.
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Protocol design and endpoint interpretation
NCT06546553 is a Phase 1, terminated study with not reported planned participants. Allocation is Non-Randomized, masking is None (Open Label), and the intervention model is Sequential Assignment.
The primary endpoint is “PART 1: Number of participants with Dose-limiting toxicities (DLT)” over “First cycle, Day 1 up to Day 28.” The retrieved endpoint description is: Any of the prespecified AEs that are attributable to one, the other, or both study treatments, occurring in the DLT observation period are considered DLTs, excluding toxicities clearly due to underlying disease or extraneous causes..
Interpretation should test whether the endpoint captures a clinically meaningful change, whether its time horizon matches the proposed biology, and whether treatment discontinuation or missing data can bias the estimate. The planned enrollment of not reported should be assessed against expected effect size, event frequency, multiplicity, subgroup plans and attrition.
No named control drug was returned in the protocol field set. A placebo comparator can strengthen internal efficacy assessment, while an active comparator may better test clinical differentiation. Single-arm and open-label programs require greater weight on objective outcomes, independent assessment and external benchmarks.
Indexed readouts in the surrounding landscape
100 recent result records were selected as contextual evidence for MSS/pMMR/MSI-L Colorectal Carcinoma. These records do not establish direct evidence for NCT06546553 unless the registration number matches.
A mixed inflammatory peripheral signature defines clinical outcomes in a phase II trial combining pembrolizumab with paclitaxel and carboplatin in melanoma
Phase 2; n=30; AE(Grade 3 and higher) = 50.0 % Source: https://pubmed-ncbi-nlm-nih-gov.libproxy1.nus.edu.sg/41732954/
Immune Checkpoint Inhibitor Myositis, Myocarditis, and Myasthenia Gravis: a comparison of overall survival using real world data
Not Applicable; n=318391; Median time from ICI initiation to irAE onset = 42.1 Day ; Median time from ICI initiation to irAE onset = 230.2 Day Source: https://acrabstracts.org/abstract/immune-checkpoint-inhibitor-myositis-myocarditis-and-myasthenia-gravis-a-comparison-of-overall-survival-using-real-world-data/
Rheumatoid Arthritis does not negatively impact overall survival in patients with Renal Cell Carcinoma treated with Immune Checkpoint Inhibitors- a real-world data study
Not Applicable; n=27394; DMARD use = 0.1 % ; DMARD use = 14.0 % Source: https://acrabstracts.org/abstract/rheumatoid-arthritis-does-not-negatively-impact-overall-survival-in-patients-with-renal-cell-carcinoma-treated-with-immune-checkpoint-inhibitors-a-real-world-data-study/
Result fields should be reconciled with the source record before quantitative comparison. Population definitions, analysis sets, dose cohorts, estimands, confidence intervals, rescue therapy and follow-up can materially change the meaning of a numerical endpoint. Clinical Trials MCP supports repeatable refreshes as result records change.
Asset and sponsor context
PF-07826390 is indexed as Immunoglobulin with LILRB1 x LILRB2 biology and a global stage of Discontinued. The asset profile lists Pfizer Inc. as an originator or developer.
Pfizer Inc. is indexed in an unreported country with the website http://www.pfizer.com. Engages in discovery, development, manufacturing, marketing, sale and distribution of biopharmaceutical products & ingredients The record lists 413 development-stage drug assets.
For execution diligence, monitor sponsor ownership, collaborator additions, site expansion, protocol amendments and enrollment revisions. A change in ownership or geography can alter operational confidence as well as the commercial meaning of a future readout.
Development white space
- Endpoint white space. Determine whether a more patient-relevant outcome, longer durability window or blinded central assessment would resolve uncertainty left by the current endpoint.
- Population white space. Test biomarker-defined, treatment-line or risk-stratified subgroups where effect size and unmet need could be clearer.
- Comparator white space. Identify whether the study can support differentiation against the current standard of care rather than only activity against baseline or placebo.
- Geographic white space. Assess whether the disclosed footprint supports recruitment, regulatory transferability and commercial generalizability.
- Sequencing white space. Clarify whether PF-07826390 is intended for monotherapy, combination, maintenance, rescue or an earlier treatment line.
White space should be framed as an unanswered development question, not merely an unoccupied mechanism label. A credible program closes a measurable clinical uncertainty with a design that can be executed and interpreted.
Strategic implications and next readouts
For sponsors, the endpoint hierarchy, safety window, enrollment pace and protocol amendment history should all support the same target product profile. Advancement criteria should be set before the readout and tied to clinical effect, uncertainty, tolerability and operational feasibility.
For business-development teams, differentiation may come from a sharper population, stronger comparator, more durable benefit, simpler delivery or clearer sequencing role. For investors, the central risk is evidence quality relative to time and capital, not the phase label in isolation.
Track recruitment status, enrollment changes, primary-completion timing, endpoint revisions, new result records, sponsor ownership and collaborator changes. Re-run the PatSnap MCP workflow when a surrogate becomes a clinical outcome, a single-country study expands, the comparator changes or a new result materially shifts the competitive benchmark.
Source trail and bottom line
Anchor trial: NCT06546553
Protocol source: https://clinicaltrials.gov/study/NCT06546553
MCP sources: Clinical Trials MCP (clinical_trial_fetch and clinical_trial_result_fetch); Drug & Asset MCP (drug_fetch); Company & Deal Intelligence MCP (organization_fetch).
Data snapshot: 15 October 2026.
PF-07826390 in MSS/pMMR/MSI-L Colorectal Carcinoma is best understood through the interaction of protocol design, surrounding readouts, asset context and sponsor execution. The current record makes PART 1: Number of participants with Dose-limiting toxicities (DLT) and 2025-10-03 the leading decision points.
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