Multinational Observational Study to Describe Diagnostic Stage Shift in Patients With Lung Cancer Using Medical Records (DIASTAG)

May 29, 2026 updated by: AstraZeneca

Multicentric Multinational Observational Study to Describe the Shift in Stage at Diagnosis of Lung Cancer. No Direct Recruitment of Patients or Administration of Study Medication.

Multinational observational study to describe diagnostic stage shift in patients with lung cancer using medical records. Increased lung cancer screening programs and increased utilization of other screening modalities such as large increase in community chest radiography referral rates in response to public awareness campaigns, as well as unintentional detections through cardiac CT(computed tomography) angiograms, or screening for coronary disease may help in detecting the disease at earlier curable stages. Availability and increased access to novel therapies increase the likelihood of an early-stage diagnosis aiming for improved survival.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Detailed Description

This is a multicentric, multinational, observational study to describe the shift in stage at diagnosis of lung cancer over the time- period from baseline year to EOS (end of study). The study will be implemented in the AstraZeneca International Region (ie, non-US, non-European countries). The participating countries and sites will be selected based on the availability and accessibility of secondary data sources such as lung cancer databases or EMR (electronic medical records) in the target countries. Once countries and databases are selected, the protocol will be adapted for the specific country including details about the patient databases. The study will be conducted in compliance with the local legal, ethical, and regulatory requirements of the selected countries. The study-specific data will be extracted from the databases and recorded using eCRF (electronic case report form). This study does not involve direct recruitment of the patients. Aggregated data from the databases for each consecutive year starting from the baseline year until EOS, of patients with lung cancer meeting the inclusion criteria will be included in the study.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
3000

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

This study does not involve direct recruitment of the patients. Aggregated data from the databases for each consecutive year starting from the baseline year until End of study. Patients with lung cancer meeting the following criteria will be included in the study.

Description

Inclusion Criteria:

  • Adult female and male patients ≥18 years old.
  • Confirmed diagnosis of lung cancer (either cytologically or histologically)

Exclusion Criteria:

  • Patients presenting with recurrent or relapsed lung cancer.
  • Patients with a concomitant cancer at the time of diagnosis of lung cancer, except for nonmetastatic nonmelanoma skin cancers, or in situ or benign neoplasms: a cancer will be considered concomitant if it occurs within 5 years of lung cancer diagnosis.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Early stage (stage I and II with [N0])
Time Frame: 5 years
Number and percentage of patients diagnosed with Early stage (stage I and II with [N0]) from baseline year until EOS
5 years
Locally advanced (stage II and III [N+])
Time Frame: 5 years
Number and percentage of patients diagnosed with Locally advanced (stage II and III [N+]) from baseline year until EOS
5 years
Late stage (stage IV [M1])
Time Frame: 5 years
Number and percentage of patients diagnosed with Late stage (stage IV [M1]) from baseline year until EOS
5 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
screening based on clinical presentation
Time Frame: 5 years
Number and percentage of patients with modalities of diagnosis and screening at the yearly data cut-off based on clinical presentation
5 years
Incidental diagnosis
Time Frame: 5 years
Number and percentage of patients with Incidental diagnosis o Through screening program (Yes/No) If yes, screening modality (LDCT/ sputum microscopy/ chest X-ray/ any other)
5 years
TNM staging
Time Frame: 5 years
Number and percentage of patients presenting with TNM staging according to AJCC 8th edition (Aberle, 2011;Kutob, 2019) or staging by alternative lung cancer staging system
5 years
Histological type
Time Frame: 5 years
Number and percentage of patients presenting with lung cancer diagnosis. Histological type
5 years

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Age categories
Time Frame: 5 years
Relationship between the diagnosis at early stage and following characteristics - Age categories
5 years
smoking categories.
Time Frame: 5 years
Relationship between the diagnosis at early stage with smoking categories
5 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
AstraZeneca

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
April 1, 2027

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 31, 2030

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
March 31, 2030

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
February 7, 2025

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
February 19, 2025

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
February 24, 2025

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 2, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 29, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • D133HR00049

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Qualified researchers can request access to anonymized individual patient-level data from AstraZeneca group of companies sponsored clinical trials via the request portal Vivli.org. All requests will be evaluated as per the AZ disclosure commitment: https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure. Yes, indicates that AZ are accepting requests for IPD, but this does not mean all requests will be shared.

IPD Sharing Time Frame

AstraZeneca will meet or exceed data availability as per the commitments made to the EFPIA PhRMA Data Sharing Principles. For details of our timelines, please rerefer to our disclosure commitment at https://astrazenecagrouptrials.pharmacm.com/ST/Submission/Disclosure.

IPD Sharing Access Criteria

When a request has been approved AstraZeneca will provide access to the anonymized individual patient-level data via secure research environment Vivli.org.

Signed Data Usage Agreement (non-negotiable contract for data accessors) must be in place before accessing requested information.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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