Clinical trials · failure tracking

Terminated, withdrawn and suspended studies

Oncology studies whose overall status is TERMINATED, WITHDRAWN or SUSPENDED on ClinicalTrials.gov, with the stop reason exactly as the registrant posted it. A category is attached only when an explicit keyword rule matches the text; CancerIndex never infers why a study stopped.

2 stopped studies mapped to Nasopharyngeal Non-Keratinizing Carcinoma and descendants · 100% state a reason

Stated reasons by category

Over the 2 studies matching the cancer, status and year filters (the category filter does not change this chart). Each study is counted once, in the first matching category; greyed bars are studies whose text matched no rule or was empty.

Computedrules ci-stop-reasons-v1 · keyword matching only

Classification rules

A category is assigned when one of its keywords appears in the posted text (case-insensitive, whole words). Rules are tested in this order and the first match wins; every match is kept in the API (reasonMatches).

COVID-19 / pandemic — covid · pandemic
Safety / toxicity — safety · toxicity · adverse
Efficacy / futility — efficacy · futility · lack of benefit · interim analysis
Drug supply — supply · drug availability · manufacturing
Investigator — PI left · investigator
Enrollment / accrual — accrual · enrollment / enrolment · recruitment
Funding — funding · financial · budget
Sponsor / business decision — business · sponsor decision · strategic · portfolio · company
Other (stated, no rule matched) — text present, no keyword matched

clinicaltrialsObservedShowing 1–2 of 2 studies, most recently updated first

NCT	Title	Phase	Status	First posted	Lead sponsor	Why stopped (as posted)	Category
NCT04458909	Testing the Addition of an Anti-cancer Immune Therapy Drug (Nivolumab) to the Usual…	Phase 3	terminated	Jul 7, 2020	National Cancer Institute (NCI)	External information	Other (stated, no rule matched)
NCT01254734	Transoral Robotic Surgery in Treating Patients With Benign or Stage I-IV Head and Neck…	N/A	terminated	Dec 7, 2010	City of Hope Medical Center	The study will be rewritten as a data registry study	Other (stated, no rule matched)

Stop reasons are registrant-reported free text and are displayed verbatim (truncated; hover for the full text). Categories come from explicit keyword rules and are never inferred from the study design, sponsor or outcome; a study that stopped for several reasons is filed under the first rule that matched. A TERMINATED status does not imply a negative result.

Data updated 22 days agoSource updated Oct 3, 2025source: clinicaltrials