Clinical Benefit and Biomarker Analysis of Combination of PD-1/PD-L1 Immune Checkpoint Inhibitors and Radiotherapy (ST-ICI02)

September 10, 2025 updated by: University of Erlangen-Nürnberg Medical School

Clinical Benefit and Biomarker Analysis of Combination of PD-1/PD-L1 Immune Checkpoint Inhibitors and Radiotherapy in NSCLC, HNSCC and Other Solid Tumors

Inhibitors of the programmed cell death protein 1 (PD-1)/PD-L1 immune checkpoint signaling pathway are already approved in the treatment of various tumor entities in relapsed or metastatic stages. Different exploratory trials suggest that the combination of radiotherapy and PD-1/PD-L1 inhibitors is highly effective, especially in oligometastatic stages and if all lesions are treated with ablative radiotherapy. In addition, the role of predictive biomarkers is becoming increasingly important for future therapy algorithms. First data, also from our group, indicate clearly that dynamic changes of immune cells and their activation markers in the peripheral blood (immune matrix) can be used as predictive biomarkers. During the planned STICI-02 trial predictive immune matrix derived from the STICI01 trial (NCT03453892) will be validated in the groups of patient suffering from HNSCC (palliative), NSCLC (separately palliative and adjuvant) and "other solid tumors" (including in particular esophageal carcinomas, urothelial and renal carcinomas, small cell bronchial carcinomas and squamous cell carcinomas of the skin [depending on the current drug approval]). Within the framework of scientific accompanying projects, the predictive value of markers in tumor tissue and of pattern radiomics analyses will be analyzed accompanying the immunophenotyping in peripheral blood. The side effects

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
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.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

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.
200

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.

Study Contact Backup

Study Locations

  • Germany
    • Bavaria
      • Erlangen, Bavaria, Germany, 91054
        • Recruiting
        • Department of Radiation Oncology, Universitätsklinikum Erlangen
        • Contact:
        • Contact:
        • Principal Investigator:
          • Markus Hecht, M.D.
        • Principal Investigator:
          • Udo S Gaipl, Prof. Dr.
        • Principal Investigator:
          • Rainer Fietkau, Prof. Dr.

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

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Probability Sample

Study Population

The study cohort consist of patients suffering from HNSCC (palliative), NSCLC (separately palliative and adjuvant) and "other solid tumors" (including in particular esophageal carcinomas, urothelial and renal carcinomas, small cell bronchial carcinomas and squamous cell carcinomas of the skin [depending on the current drug approval]) which will be treated with ICI (PD-1/PD-L1) and potential radiation of metastases at Department of Radiation Oncology of Universitätsklinikum Erlangen.

Description

Inclusion Criteria:

  • Patients treatable for HNSCC (palliative), NSCLC (separately palliative and adjuvant) or "other solid tumour"
  • Indication for system therapy with a PD-1/PD-L1 inhibitor according to clinical standards
  • Patients without or with radiation of one or more metastases
  • Age at least 18 years

Exclusion Criteria:

  • Melanoma patients
  • Fertile patients who refuse effective contraception during study treatment
  • Persistent drug and/or alcohol abuse
  • Patients not able or willing to behave according to study protocol
  • Patients in care
  • Patients that are not able to speak German
  • Patients which are imprisoned according to legal or governmental order

Both gender are included into the study, a maximum age was not defined.

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

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Trial cohort
The study cohort consist of patients suffering from HNSCC (palliative), NSCLC (separately palliative and adjuvant) and "other solid tumors" (including in particular esophageal carcinomas, urothelial and renal carcinomas, small cell bronchial carcinomas and squamous cell carcinomas of the skin [depending on the current drug approval]) which will be treated with ICI (PD-1/PD-L1) and potential radiation of metastases at Department of Radiation Oncology of Universitätsklinikum Erlangen.
Other: Conventional Therapy acc. to prevailing clincal approved schemes
The study is observational. The treatment-plan of the underlying disease remains unchanged. The treatment of the patient is according to the prevailing clinical approved schemes at the respective entities. Blood will be drawn from patients at several time points during and after RT and ICI for detailed immunomonitoring of the patients.

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
Overallsurvival
Time Frame: From inclusion till death of subject or up to 5 years, whichever came first.
Prospective investigation of the survival of the patients.
From inclusion till death of subject or up to 5 years, whichever came first.
Longitudinal Immunophenotype
Time Frame: Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.
Longitudonal Immunophenotyping of the patients: Detection of about 30 distinct immune cell (sub)types together with their activation markers during treatement.
Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.
Predictors in pattern recognition analyses
Time Frame: Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.
Identification of possible predictors in pattern recognition analyses from clinical imaging data sets.
Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.
Immune-associated side effects
Time Frame: Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.
Detection of immune-associated side effects
Day 0 till progression or end of study up to 5 years or till change to conventional treatment without ICI, whichever came first.

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
Detection of adverse events according to NCI CTAE (v4.0)
Time Frame: From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, or till change to conventional treatment , whichever came first, assessed up to 5 years.
The adverse effects of Immunecheckpoint and Radiotherapy is recorded by official questionaire
From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, or till change to conventional treatment , whichever came first, assessed up to 5 years.
Progression free survival
Time Frame: From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, whichever came first, assessed up to 5 yeras
survival of the patient without progression of malignant disesase
From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, whichever came first, assessed up to 5 yeras
Treatment response (according to RECIST and iRECIST criteria)
Time Frame: From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, whichever came first, assessed up to 5 years
RECIST and iRECIST criteria will used to analyse the response of the patient to the respective treatement
From date of inclusion to the trial until the date of first documented iRECIST progression or date of death from any cause, whichever came first, assessed up to 5 years
Attempt to establish an immune matrix of responding/non-responding patients
Time Frame: The analyses are conducted at time points before (day 0) and before every prescription of ICI (every 14 to 21 days) till progression or end of study up to 5 years or till change to conventional treatment without ICI.
Analysis of clincal, MRI and imunnologic, molecular data to develop an biomarkermatrix with processes of machine learning
The analyses are conducted at time points before (day 0) and before every prescription of ICI (every 14 to 21 days) till progression or end of study up to 5 years or till change to conventional treatment without ICI.

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.
University of Erlangen-Nürnberg Medical School

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Markus Hecht, PD Dr., Universitätsklinikum Erlangen, Department of Radiation Oncology
  • Principal Investigator: Udo S Gaipl, Prof. Dr., Universitätsklinikum Erlangen, Department of Radiation Oncology
  • Study Chair: Rainer Fietkau, Prof. Dr., Universitätsklinikum Erlangen, Department of Radiation Oncology
  • Principal Investigator: Benjamin Frey, PD Dr. Dr., Universitätsklinikum Erlangen, Department of Radiation Oncology

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 (Actual)

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 30, 2021

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.
May 31, 2028

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.
December 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).
April 26, 2021

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.
May 18, 2021

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.
May 19, 2021

Study Record Updates

Last Update Posted (Estimated)

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.
September 17, 2025

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.
September 10, 2025

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.
September 1, 2025

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.
  • ST-ICI02

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

UNDECIDED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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