Chemotherapy with or without PD-1 antibody for advanced lung cancer patients with RET fusion

Chemotherapy or Chemotherapy Plus PD-1 Antibody in RET Fusion Positive Advanced Non-small Cell Lung Cancer ( Poseidon Study)

Observational Hunan Province Tumor Hospital · NCT04322591

This study is testing if adding a PD-1 antibody to chemotherapy helps people with advanced lung cancer who have a specific gene change feel better and live longer.

Quick facts

Study typeObservational
Enrollment70 (estimated)
Ages18 Years and up
SexAll
SponsorHunan Province Tumor Hospital Academic / other
Drugs / interventionsChemotherapy
Locations1 site (Changsha, Hunan)
Trial IDNCT04322591 on ClinicalTrials.gov

What this trial studies

This study investigates the effectiveness and safety of chemotherapy alone or in combination with a PD-1 antibody for patients with RET Fusion Positive Advanced Non-small Cell Lung Cancer. It aims to enroll 100 patients and focuses on progression-free survival as the primary endpoint. The study is observational and will assess the outcomes of these treatment approaches in a real-world setting.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older with advanced non-squamous non-small cell lung cancer confirmed by histopathology and who are RET fusion positive.

Not a fit: Patients who have previously received antitumor treatment or have contraindications to chemotherapy may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide new treatment options that improve outcomes for patients with RET Fusion Positive Advanced Non-small Cell Lung Cancer.

How similar studies have performed: Other studies have shown promising results with similar approaches, particularly in targeting RET fusions in lung cancer, indicating potential for success.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* ≥18,Advanced Non-squamous Non-small Cell Lung Cancer Confirmed by Histopathology
* RET Fusion Positive
* First Diagnosis and Treatment
* Treatment Plan is Chemotherapy or Chemotherapy plus PD-1 antibody

Exclusion Criteria:

* - Patients received antitumor treatment before
* Patients with contraindication of chemotherapy
* Pregnant or breast feeding women

Where this trial is running

Changsha, Hunan

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Non-small Cell Lung CancerPD-L1RET Fusion Lung Cancer Patients
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.