Clinical trial Recruiting at 10 sites Phase 3 Interventional

Omitting re-excision after complete primary melanoma excision

Official title: Multicenter Phase 3 Randomized Controlled Trial of NO Re-excision MelanomA - NORMA 2

Run by The Netherlands Cancer Institute · NCT07530887 · Data updated 2026-11-12

This trial tests whether people with pT1b–pT4b cutaneous melanoma whose tumors were completely removed can safely skip the usual re-excision surgery.

Quick facts

PhasePhase 3
Study typeInterventional
SexAll
Enrollment1749 (estimated)
SponsorThe Netherlands Cancer Institute
Academic / other
Locations21 sites ('s-Hertogenbosch and 20 other locations)
StatusRecruiting
StartedNovember 13, 2025
Main results expectedNovember 2033
Study endsNovember 2033
Registry record updatedApril 15, 2026
Trial IDNCT07530887 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults (≥18 years) with histologically confirmed pT1b–pT4b primary cutaneous melanoma who had a complete diagnostic excision with tumor-free margins, ECOG 0–2, and no evidence of regional or distant metastases are ideal candidates.

Probably not a fit

Patients with positive surgical margins, known regional or distant metastases, tumor subtypes not included in the protocol, or those unable to attend follow-up at participating centers are unlikely to benefit from omission of re-excision.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a multicenter, phase III randomized non-inferiority trial that will enroll 1,749 patients with pT1b–pT4b cutaneous melanoma and no evidence of metastasis. Participants are randomized 1:1 to standard re-excision according to local guidelines or to omission of re-excision, with sentinel lymph node biopsy and adjuvant therapy performed as indicated in both groups. The primary endpoint is relapse-free survival, with secondary endpoints including overall survival, local and regional recurrence patterns, surgical morbidity, quality of life, and health economic outcomes. Patients will be followed for up to five years to capture recurrence and survival events.

Why it matters

Potential benefit: If successful, the approach could allow many patients to avoid an extra surgery, reducing surgical morbidity, improving quality of life, and lowering healthcare costs.

How similar studies have gone: Some retrospective and observational reports have suggested selected patients may safely avoid wider re-excision, but there is no large phase III randomized evidence yet.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients must be 18 years or older at time of consent
* Patients must have an ECOG performance score between 0 and 2
* Histologically confirmed, stage pT1b - pT4b (TNM AJCC 8th edition) cutaneous primary melanoma
* Histological subtypes that are eligible are:

  * Superficial Spreading Melanoma (SSM)
  * Nodular Melanoma (NM)
* The primary melanoma must have been removed by diagnostic excision and must have at least a minimum of 1 mm tumor free margin for invasive melanoma AND any in situ melanoma
* Patient must provide informed consent and comply with the treatment protocol and follow-up plan
* Life expectancy of at least 5 years from the time of diagnosis, not considering the melanoma in question, as determined by the investigator
* A survivor of prior cancer is eligible provided that ALL of the following criteria are met and documented:

  * The patient has undergone potentially curative therapy for all prior malignancies
  * Life expectancy should be at least 5 years and
  * The patient is deemed by their treating physician to be at low risk of recurrence from previous malignancies.

Exclusion Criteria:

* Non-cutaneous melanoma (uveal, mucosal)
* Acral melanoma
* Lentigo malignant melanoma (LMM)
* Desmoplastic melanoma
* Neurotropic melanoma
* Spitz melanoma/malignant Spitz tumor melanoma
* Satellites, in-transit melanomas or macroscopic melanoma metastases
* Uncertain diagnosis of melanoma i.e. so-called 'melanocytic lesions of unknown malignant potential' (MELTUMP or STUMP)
* Other non-SSM or NM subtypes
* Melanoma removed by shave excision, excogliation or core biopsy
* Patient has already undergone a local flap reconstruction of the defect after excision of the primary
* History of previous or concurrent (i.e., second primary) invasive melanoma
* Multiple melanomas
* Patient has undergone surgery on a separate occasion to clear the lymph nodes of the probable draining lymphatic field, except for previous SLNB
* Any additional solid tumor or hematologic malignancy during the past 5 years with a life expectancy of less than 5 years
* History of organ transplantation

Where it's running

  • Jeroen Bosch Ziekenhuis
    's-Hertogenbosch, Netherlands
    Recruiting
  • Noordwest Ziekenhuisgroep
    Alkmaar, Netherlands
    Recruiting
  • Flevoziekenhuis
    Almere Stad, Netherlands
    Recruiting
  • Antoni van Leeuwenhoek
    Amsterdam, Netherlands
    Recruiting
  • Gelre ziekenhuizen
    Apeldoorn, Netherlands
    Recruiting
  • Rijnstate Ziekenhuis
    Arnhem, Netherlands
    Recruiting
Show 15 more locations
  • Medisch Spectrum Twente
    Enschede, Netherlands
    Recruiting
  • Leids Universitair Medisch Centrum
    Leiden, Netherlands
    Recruiting
  • Haaglanden Medisch Centrum
    The Hague, Netherlands
    Recruiting
  • Diakonessenhuis
    Utrecht, Netherlands
    Recruiting
  • Catharina ziekenhuis
    Eindhoven, Netherlands
    Not yet recruiting
  • Groene Hart Ziekenhuis
    Gouda, Netherlands
    Not yet recruiting
  • Martini ziekenhuis
    Groningen, Netherlands
    Not yet recruiting
  • Tergooi MC
    Hilversum, Netherlands
    Not yet recruiting
  • Dijklander Ziekenhuis
    Hoorn, Netherlands
    Not yet recruiting
  • Alrijne Ziekenhuis
    Leiden, Netherlands
    Not yet recruiting
  • Maastricht UMC
    Maastricht, Netherlands
    Not yet recruiting
  • Maasstad Ziekenhuis
    Rotterdam, Netherlands
    Not yet recruiting
  • Haga Ziekenhuis
    The Hague, Netherlands
    Not yet recruiting
  • St. Antonius Ziekenhuis
    Utrecht, Netherlands
    Not yet recruiting
  • Isala Ziekenhuis
    Zwolle, Netherlands
    Not yet recruiting

Study contacts

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 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.