Feasibility of Cancer Clinical Trial Enrollment Goals Based on Cancer Incidence.

dc.contributor.author

Tran, George

dc.contributor.author

Harker, Matthew

dc.contributor.author

Chiswell, Karen

dc.contributor.author

Unger, Joseph M

dc.contributor.author

Fleury, Mark E

dc.contributor.author

Hirsch, Bradford

dc.contributor.author

Miller, Kimberly

dc.contributor.author

d'Almada, Philip

dc.contributor.author

Tibbs, Sheri

dc.contributor.author

Zafar, S Yousuf

dc.date.accessioned

2023-08-10T15:42:31Z

dc.date.available

2023-08-10T15:42:31Z

dc.date.issued

2020-01

dc.date.updated

2023-08-10T15:42:29Z

dc.description.abstract

Purpose

More than 20% of US clinical trials fail to accrue sufficiently. Our purpose was to provide a benchmark for better understanding clinical trial enrollment feasibility and to assess relative levels of competition for patients by cancer diagnosis.

Methods

The Database for Aggregate Analysis of ClinicalTrials.gov, up to date as of September 3, 2017, was used to identify actively recruiting, interventional oncology trials with US sites. Observational studies were excluded because not all are registered. Trials were categorized through Medical Subject Headings or free-text condition terms and sorted by cancer diagnosis. Trials that included more than one cancer diagnosis were included in the overall cohort but excluded when evaluating enrollment by cancer type. Trial enrollment slot availability was estimated between September 1, 2017, and August 31, 2018. Availability was estimated from total anticipated enrollment and duration, assuming a constant recruitment rate. Estimates for studies with both foreign and domestic sites were then prorated to calculate available enrollment in the United States alone. Ratios of the number of newly diagnosed patients in the United States available per trial slot were estimated using the American Cancer Society cancer incidence estimates for 2017.

Results

A total of 4,598 interventional oncology trials were identified. Overall, the estimated ratio of newly diagnosed patients available per trial slot was 12.6. Estimated ratios of patients per trial slot for six cancer diagnoses with the highest potential of 12-month US enrollment were as follows: colorectal, 24.7; lung and bronchus, 20.1; prostate, 17.6; breast (female), 13.8; leukemia, 11.6; and brain and other nervous system, 6.0.

Conclusion

For all cancers, successfully accruing trials currently open would require that more than one in every 13 recently diagnosed patients (7.9%) enroll. This ratio and relative difficulty of accrual varies among cancers examined.
dc.identifier.issn

2473-4276

dc.identifier.issn

2473-4276

dc.identifier.uri

https://hdl.handle.net/10161/28711

dc.language

eng

dc.publisher

American Society of Clinical Oncology (ASCO)

dc.relation.ispartof

JCO clinical cancer informatics

dc.relation.isversionof

10.1200/cci.19.00088

dc.subject

Humans

dc.subject

Neoplasms

dc.subject

Incidence

dc.subject

Feasibility Studies

dc.subject

Patient Participation

dc.subject

United States

dc.subject

Clinical Trials as Topic

dc.title

Feasibility of Cancer Clinical Trial Enrollment Goals Based on Cancer Incidence.

dc.type

Journal article

duke.contributor.orcid

Chiswell, Karen|0000-0002-0279-9093

duke.contributor.orcid

Tibbs, Sheri|0000-0001-9866-4996

duke.contributor.orcid

Zafar, S Yousuf|0000-0002-9039-5258

pubs.begin-page

35

pubs.end-page

49

pubs.issue

4

pubs.organisational-group

Duke

pubs.organisational-group

School of Medicine

pubs.organisational-group

Staff

pubs.organisational-group

Clinical Science Departments

pubs.organisational-group

Institutes and Centers

pubs.organisational-group

Medicine

pubs.organisational-group

Medicine, Medical Oncology

pubs.organisational-group

Duke Cancer Institute

pubs.organisational-group

Duke Clinical Research Institute

pubs.organisational-group

Institutes and Provost's Academic Units

pubs.organisational-group

University Institutes and Centers

pubs.organisational-group

Duke Global Health Institute

pubs.organisational-group

Initiatives

pubs.organisational-group

Duke Science & Society

pubs.organisational-group

Duke - Margolis Center For Health Policy

pubs.publication-status

Published

pubs.volume

4

Files

Original bundle

Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
cci.19.00088.pdf
Size:
660.41 KB
Format:
Adobe Portable Document Format