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NCT Number: NCT07492121

Screening for Brain Metastases

The survival of patients with CNS metastases often remains limited to some months. CNS metastases are also associated with neurological decline and decrease of quality of life. An early identification of CNS metastases may potentially lead to more therapeutic options and prevent or delay the development of neurological symptoms and signs. Patients with cancer associated with a high risk of developing CNS metastasis will be enrolled in this trial. These patients are candidates for a screening brain MRI program in the routine management as recommended in current guidelines (Le Rhun et al. 2021) (Amaral et al. 2025, "ESMO Living Guideline: Cutaneous Melanoma, v1.0 February 2025").

The primary objective is to compare the time to CNS metastases diagnosis detected by MRI using different contrast agents (of gadopiclenol at a dose of 0.1 mmol/kg over current standard practice ) in patients with cancer considered at high risk of developing brain metastases.

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Key information

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Patients with histologically confirmed HER-2 positive or triple negative breast cancer, non-small cell lung cancer, or melanoma
  • Up to 3 months after diagnosis of a cancer at high risk of CNS metastasis with indication for screening and follow-up by MRI (based on a high risk of CNS metastases according to EANO ESMO brain metastases guidelines: stage IV HER-2 positive or triple negative breast, stage II to IV lung cancer, stage IV melanoma)
  • Enrolment at the time of initiation of screening and follow-up MRI: usually, but not necessarily at the time of new diagnosed stage IV HER-2 positive or triple negative breast, lung cancer, melanoma
  • 18 years or older on day of signing informed consent
  • Karnofsky performance status (KPS) ≥ 60
  • Patients must have preserved renal function (serum creatinine < 1.5 x ULN or creatinine clearance (CrCl) > 30 mL/min (using the Cockcroft-Gault formula)
  • Women of child-bearing potential, including women who had their last menstruation in the last 2 years, must have a negative urinary or serum pregnancy test before the MRI.
  • Patients of childbearing / reproductive potential must agree to use adequate birth control measures, as defined by the investigator, during the study period and for at least 6 months after the last study treatment. A highly effective method of birth control is defined as those which result in low failure rate (i.e. less than 1% per year) when used consistently and correctly.
  • Ability to understand the requirements of the study, provide written informed consent and authorization of use and disclosure of protected health information, and agree to abide by the study restrictions and return for the required assessments.
  • Written informed consent for study participation must be signed and dated by the patient and the investigator prior to any study-related intervention.

Exclusion criteria

  • Any contraindication to MRI, including claustrophobia
  • Known severe adverse drug reaction or contraindication to gadolinium-based contrast agents
  • Acute or chronic renal insufficiency: grade III or more (eGFR <60 mL/min/1.73 m2) based on one eGFR assessment performed within one day the MRI prior to the first contrast agent injection.
  • Heart failure: class III/IV NYHA
  • Severe liver disease
  • Uncontrolled intercurrent illness including, but not limited to ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness that would limit compliance with study requirements
  • Any psychological, familial, sociological or geographical condition potentially hampering compliance with the study protocol and follow-up schedule; those conditions should be discussed with the patient before registration in the trial.
  • Women who are pregnant or who breast feeding

Treatment and study plan

gadopiclenol (contrast agent)

Other

Gadopiclenol is a contrast agent approved in Switzerland. In this study, a double-dose of gadopiclenol will be used: 0.2 mL body weight (equivalent to 0.1 mmol/kg BW) at the time of the screening brain MRI.

Other names: elucirem

standard contrast agent

Other

as per local standard of care

Primary outcomes

  1. Time interval between enrolment and diagnosis of CNS metastases

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

Secondary outcomes

  1. Incidence of CNS metastases

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    presence of brain metastases or leptomeningeal metastases

  2. Assessment of the type of CNS metastases at the time of CNS event

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    brain metastases, leptomeningeal metastases, both; and the number of measurable and non-measurable brain metastases

  3. Description of the neurological assessment

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    symptomatic versus asymptomatic; steroid consumption, Karnofsky performance status (KPS)

  4. Assessment of the rate of diagnostic procedures triggered by the results and the rate of modifications of therapeutic decision making

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    based on the pre-therapeutic imaging as compared to the diagnostic brain metastases imaging

  5. Safety and tolerability 1

    Time frame: from randomization until one month after diagnosis of CNS metastasis event or up to a maximum of 25 months (one month after last MRI)

    adverse events (CTCAE v5.0)

  6. Safety and tolerability 2

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    short patient self-questionnaire on the tolerance of MRI

  7. Qualitative assessment of images by the neuroradiologist

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    overall visualization and characterization of the lesion; lesion border delineation; internal morphology; degree of contrast enhancement; technical image adequacy for diagnosis; diagnosis and confidence assigned to the diagnosis; overall diagnostic comfort

Other outcomes

  1. Liquid biopsy 1

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    Cell-free DNA (cfDNA)

  2. Liquid biopsy 2

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    Extracellular vesicles (EV)

  3. Artificial intelligence brain MRI analysis 1

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    Determination of early MRI characteristics of brain metastases

  4. Artificial intelligence brain MRI analysis 2

    Time frame: from randomization until diagnosis of CNS metastasis event or up to a maximum of 24 months

    Exploration of the prediction of the tumor growth

Sponsors and collaborators

Lead sponsor

University of Zurich

Other

Registry information

Official study title

Quality and Safety of Screening for Brain Metastases by Gadopiclenol in Patients With Cancer at High Risk of Developing Brain Metastases

Acronym: GAPIMET

Important dates

Study start
2026
Primary completion
2029
Study completion
2030
First posted
Mar 25, 2026
Registry last updated
Mar 25, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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