Lab validation of immune cell therapy for MCPyV-positive Merkel cell carcinoma

Validation of in Vitro Method for Anti-MCPyV Immunotherapy on Patients With Merkel Cell Carcinoma of Skin

Observational Assistance Publique - Hôpitaux de Paris · NCT06780475

The team will test a lab-based immune cell therapy on tumor or blood samples from adults with MCPyV-positive Merkel cell carcinoma to see how the cells respond.

Quick facts

Study typeObservational
Enrollment15 (estimated)
Ages18 Years and up
SexAll
SponsorAssistance Publique - Hôpitaux de Paris Academic / other
Locations1 site (Boulogne-Billancourt)
Trial IDNCT06780475 on ClinicalTrials.gov

What this trial studies

The study collects tumor or blood samples from adults with Merkel cell carcinoma who are treated or followed at Ambroise Paré Hospital and applies an anti-MCPyV cell therapy in the laboratory. Researchers will expose patient-derived samples to the proposed cell therapy in vitro and measure tumor cell killing and immune activation. The primary aim is to validate the laboratory method and identify which patient samples show a response. This is an observational, bench-based validation and does not deliver the investigational therapy to patients.

Who should consider this trial

Good fit: Ideal candidates are adults (≥18) diagnosed with Merkel cell carcinoma of the skin, especially those known or suspected to be MCPyV-positive, who are receiving local or systemic care or active follow-up at the recruiting center and can give informed consent.

Not a fit: Patients who are pregnant or breastfeeding, under guardianship, enrolled in another interventional clinical trial, or whose tumors are MCPyV-negative should expect no direct clinical benefit from participation and may be ineligible.

Why it matters

Potential benefit: If successful, this work could help develop a targeted immune cell therapy for MCPyV-positive tumors and guide selection of patients for future clinical treatment.

How similar studies have performed: Laboratory and early preclinical MCPyV-targeted immune approaches have shown promising signals, but clinical benefit in patients has not been established.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients \>= 18 years old;
* Diagnosed with Merkel cell carcinoma of skin, ongoing for local treatment, systemic treatment, complementary treatment or an active follow-up;
* Informed for the study and no-opposed for participation;
* Affiliated with a social security scheme or in an equivalent situation.

Exclusion Criteria:

* Patients ongoing another interventional clinical trial;
* Patients under guardianship or trusteeship;
* Pregnancy or breastfeed;
* Patients refusal.

Where this trial is running

Boulogne-Billancourt

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 Merkel Cell Carcinoma of Skin
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.