Tamoxifen Citrate in Muscular Dystrophy, Duchenne: NCT03354039 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: 16 October 2026. This strategic research report is not medical, regulatory or investment advice. Trial status and dates can change.
Phase 3
Clinical phase
Completed
Recruitment status
not reported
Planned enrollment
2022-07-25
Primary-completion proxy
Executive view
NCT03354039 evaluates Tamoxifen Citrate in Muscular Dystrophy, Duchenne. The disclosed sponsor is Universitätsspital Basel, the design is Interventional, and the geographic footprint is Netherlands, United Kingdom, France, Switzerland, Germany, Spain. The first listed primary endpoint is Reduction of disease progression, assessed over Baseline to week 48.
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 NCT03354039 and selected peers. clinical_trial_result_fetch supplied detailed result records from the wider Muscular Dystrophy, Duchenne landscape. Drug & Asset MCP drug_fetch was queried for Tamoxifen Citrate, while Company & Deal Intelligence MCP organization_fetch was queried for Universitätsspital Basel.
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 |
|---|---|---|---|---|---|---|
| NCT03354039 | Tamoxifen Citrate | Phase 3 / Completed | Universitätsspital Basel | Netherlands, United Kingdom, France, Switzerland, Germany, Spain | Reduction of disease progression Baseline to week 48 | 2022-07-25 |
| NCT04240314 | AT-702 | Phase 1/2 / Completed | Nationwide Children's Hospital | United States | Number of Participants With Unacceptable Toxicity. 2 years | 2023-11-13 |
| NCT04184882 | Bocidelpar | Phase 1 / Terminated | Astellas Pharma, Inc. | United States | Number of participants with Treatment Emergent Adverse Events (TEAEs) Up to Week 28 | 2022-09-04 |
| NCT04179409 | Casimersen | Phase 2 / Completed | Nationwide Children's Hospital | United States | Change in Dystrophin Expression From Baseline Following Treatment With Either AMONDYS 45 (Previously Casimersen), EXOND… Baseline, 1 year | 2021-09-01 |
| NCT04129294 | Brogidirsen | Phase 1/2 / Completed | National Center of Neurology & Psychiatry | Japan | Adverse event and adverse drug reaction [Safety and Tolerability] At the end of Part 2 (24 weeks treatment period and 12 weeks follow u… | 2022-05-31 |
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
NCT03354039 is a Phase 3, completed study with not reported planned participants. Allocation is Randomized, masking is Quadruple, and the intervention model is Parallel Assignment.
The primary endpoint is “Reduction of disease progression” over “Baseline to week 48.” The retrieved endpoint description is: To test if tamoxifen treatment, compared to placebo, reduces the progression of the disease in 6.5-12 years old ambulant DMD patients (Group A) by at least 50% (using the MFM D1 subscore as primary clinical endpoint)..
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
0 recent result records were selected as contextual evidence for Muscular Dystrophy, Duchenne. These records do not establish direct evidence for NCT03354039 unless the registration number matches.
Indexed evidence status
No directly comparable result record was retrieved for this disease query. This is a monitoring gap, not evidence of absence.
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
Tamoxifen Citrate is indexed as Small molecule drug with ER biology and a global stage of Approved. The asset profile lists AstraZeneca PLC as an originator or developer.
Universitätsspital Basel is indexed in an unreported country with the website http://www.unispital-basel.ch. University Hospital Basel provides and offers healthcare services and medical needs of the community. The record lists 12 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 Tamoxifen Citrate 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: NCT03354039
Protocol source: https://clinicaltrials.gov/study/NCT03354039
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: 16 October 2026.
Tamoxifen Citrate in Muscular Dystrophy, Duchenne is best understood through the interaction of protocol design, surrounding readouts, asset context and sponsor execution. The current record makes Reduction of disease progression and 2022-07-25 the leading decision points.
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