Disclaimer and limitations

Purpose and scope

The website organizes public records for clinical trials reported as terminated, suspended, or withdrawn. It provides search tools, summaries, groupings, calculated statistics, rankings, and analytical classifications intended to make large volumes of registry information easier to explore.

The presence of a study on this website does not establish that a drug, device, biological hypothesis, sponsor, investigator, or development program has failed. Trials stop for many reasons, including recruitment, funding, operations, strategy, regulation, safety, efficacy, futility, or incomplete and ambiguous circumstances.

No guarantee of accuracy, completeness, or timeliness

Clinical trial registry records are submitted and maintained by third parties, including sponsors and investigators. They can be incomplete, delayed, inconsistent, amended, or incorrect. Data can also change after it has been ingested into this website.

Although reasonable efforts are made to process and present the information carefully, no representation, warranty, or guarantee is made that any record, category, calculation, summary, ranking, date, link, or other result is accurate, complete, current, error-free, or suitable for a particular purpose. A missing record does not prove that no relevant trial exists.

Analytical classifications are screening signals

Stop-reason categories and labels may be produced through rules, text matching, normalization, automated processing, manual review, or combinations of these methods. These outputs involve interpretation and can be wrong. Confidence labels describe the operation of the classification process; they are not guarantees that a conclusion is correct.

Categories such as efficacy/futility, safety, operational, enrollment, funding, regulatory, or other/unknown are analytical conveniences. They do not establish causation, clinical significance, statistical significance, treatment effectiveness, patient prognosis, sponsor conduct, or regulatory status beyond what the underlying sources actually state.

Calculated results and comparisons

Counts, percentages, rankings, outlier scores, comparisons, trends, and other derived results depend on the available dataset, inclusion rules, normalization choices, classifications, filters, time window, and calculation method. Small samples, duplicate concepts, changing registry records, missing fields, and differences in reporting behavior can materially affect a result.

Comparisons between sponsors, disease areas, phases, interventions, or other groups should not be interpreted as proof of relative quality, competence, safety, misconduct, or development performance without a separate and appropriately controlled analysis.

Not medical or professional advice

Nothing on this website constitutes medical advice, diagnosis, treatment guidance, patient eligibility guidance, or a recommendation to start, stop, or change care. It is also not scientific, regulatory, legal, investment, trading, insurance, or other professional advice. Consult appropriately qualified professionals and official sources for decisions in those areas.

In an emergency or for an urgent health concern, contact local emergency services or a qualified healthcare professional. Do not submit confidential patient information through the website's feedback channels.

External sources and links

Links to ClinicalTrials.gov, PubMed, regulators, sponsors, or other third-party websites are provided for convenience and verification. Those services are outside our control. A link does not imply endorsement, and we are not responsible for the availability, security, accuracy, or content of an external service.

Availability and technical operation

The website and its data may be changed, corrected, interrupted, restricted, or discontinued without notice. No guarantee is made that the site will always be available, secure, free from defects, or compatible with every device or workflow. Users should preserve the source records and dataset version needed to reproduce important work.

User responsibility

You are responsible for assessing whether information from this website is appropriate for your intended use, checking relevant source material, documenting the dataset version and filters used, and obtaining professional review where the consequences of an error could be material. Corrections and suspected classification errors can be reported through the Contact page or by email at contact@clinicaltrialfailures.com.

Limitation of liability

To the fullest extent permitted by applicable law, liability for losses arising solely from reliance on freely provided informational content, analytical labels, calculated results, technical availability, or external links is excluded or limited. This limitation does not apply where liability cannot lawfully be excluded or limited.

In particular, nothing on this page excludes or limits liability for intentional misconduct, gross negligence, injury to life, body, or health, liability under mandatory product-liability rules, an expressly assumed guarantee, or any other liability that applicable law requires to remain unlimited. Where liability for ordinary negligence may lawfully be limited, liability remains for a breach of an essential obligation and is limited to the foreseeable damage typical for that kind of obligation.

This wording is intended to describe the website's limitations transparently, not to remove statutory rights or reverse any burden of proof imposed by law.

Relationship to other policies

This page addresses informational and liability limitations. Personal-data processing is explained separately in the Privacy Policy. The Data and methods page describes the source data, analytical categories, calculations, and known methodological limitations.

Changes to this disclaimer

This disclaimer may be updated when the data, functionality, legal context, or operating model changes. The date above identifies the current published version.