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Not yet recruitingNCT07364656Updated Jan 23, 2026

Analysis of the Presence and Cardiac Functional Effects of Anti-NaV1.5 Autoantibodies in Patients With Metastatic Tumors

An interventional study of ECG in Brugada Syndrome (BrS), Breast Cancer Females and Colon Cancer, sponsored by IRCCS Policlinico S. Donato. Not yet recruiting at 1 site in Italy. Per ClinicalTrials.gov, last updated 2026-01-23.

Sponsored by IRCCS Policlinico S. Donato · Not applicable, Interventional, and Diagnostic

From the registry’s dates

  • Primary completion was expected by Jun 2026, 5 months ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
196
Allocation
Non-randomized
Sex
All
01

Study summary

The overall aim of this study is to identify and characterize anti-NaV1.5 autoantibodies in patients with metastatic breast and colorectal cancer. These tumors are characterized by the presence of a specific target structure (called nNaV1.5) against which antibodies are produced. These antibodies may cross-react with a similar structure (called NaV1.5) that is found in the heart. This could affect channel function and increase the risk of arrhythmias.

02

Conditions studied

  • Brugada Syndrome (BrS)
  • Breast Cancer Females
  • Colon Cancer
  • ECG Abnormalities
  • Autoantibodies Screening
03

In context

Brugada Syndrome

53 studies on the registry are indexed under Brugada Syndrome; 19 are open to participants now.

This study's planned enrollment of 196 is above the median of 112 across 18 interventional studies indexed under Brugada Syndrome.

Browse Brugada Syndrome studies →

Lead sponsor

IRCCS Policlinico S. Donato is the lead sponsor of 103 studies on the registry; 51 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age ≥ 18 years
  • Patients with a confirmed diagnosis of breast or colorectal cancer, either or non-metastatic
  • Patients already receiving therapy with a confirmed diagnosis of breast or colorectal cancer, either metastatic or non-metastatic
  • Signed

Exclusion criteria

Exclusion Criteria:

  • cardiovascular diseases (atrial fibrillation, congestive heart failure, cardiomyopathies, or inherited arrhythmic syndromes)
  • Known diseases or immunodeficiencies
  • Use of high-dose drugs or other experimental treatments that could interfere with the assessment of study endpoints
Terms in these criteria, in plain language(6)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Metastases

Cancer that has spread from where it began to other parts of the body. “Metastatic” cancer is cancer that has spread this way.

Line of therapy

A line of therapy is one course of treatment, which may combine several drugs. First-line is the first course given; second-line follows when that stops working or is not tolerated.

“Two prior lines” means two courses that count separately under the study’s rules — not simply two drugs. Ask the study team if you are unsure how yours are counted.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

Autoimmune disease

A condition in which the immune system attacks the body’s own tissues, such as rheumatoid arthritis, lupus, psoriasis, type 1 diabetes or inflammatory bowel disease.

Immunotherapy studies often leave out active autoimmune disease, and some name exceptions, such as thyroid disease on replacement hormone. Check the exceptions this study lists.

Immunosuppression

A weakened immune system. It can come from an illness, such as HIV or some blood cancers, or from medicines that turn the immune system down, for example after an organ transplant or for an autoimmune disease; steroids at higher doses count.

Read whether the line is about a condition or about medicines, and which medicines and doses it means.

05

Study design

Phase
Not applicable
Primary purpose
Diagnostic
Allocation
Non-randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
196 participants (estimated)

Study arms

  • Other
    breast cancer

    Diagnostic Test: ECG

  • Other
    metastatic brest cancer

    Diagnostic Test: ECG

  • Other
    colon cancer

    Diagnostic Test: ECG

  • Other
    metastatic colon cancer

    Diagnostic Test: ECG

Interventions

  • Diagnostic testECG

    These patients require an ECG to exclude the onset of arrhythmias.

06

What researchers measure

Primary outcomes

  1. Presence of circulating autoantibodies against SCN5A in plasma of enrolled patients, assessed at baseline (enrollment) and at 6- and 12-month follow-up visits.

    The primary outcome of this study is the detection of circulating autoantibodies against the cardiac sodium channel SCN5A in the plasma of enrolled patients. Plasma samples will be collected at baseline, corresponding to study enrollment, and during follow-up visits at 6 and 12 months. The presence or absence of anti-SCN5A autoantibodies will be assessed to evaluate their prevalence and persistence over time and to explore their potential association with disease mechanisms and progression.

    Time frame: Baseline (at enrollment), 6 months, and 12 months.

07

Study locations

1 site
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References and documents

Individual participant data

Plan to share: Yes — De-identified individual participant data including demographic characteristics, clinical variables relevant to the study, and laboratory results related to the presence or absence of anti-SCN5A autoantibodies at baseline, 6-month, and 12-month follow-up assessments.

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jan 23, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07364656
Collaborators
IRCCS San Raffaele
Responsible party
Sponsor
First posted
Jan 23, 2026
Start date
Jan 2026 (estimated)
Primary completion
Jun 2026 (estimated)
Completion
Dec 2026 (estimated)
Last update
Jan 23, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Oct 2025. You cannot join it, but the record below documents what was studied.

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Discussion

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