Omitting Therapeutic Lymph Node Dissection in Patients With Melanoma (Stage 3) and Major Pathological Response in the Index Lymph Node
OMIT
OMIT Trial: Omitting Therapeutic Lymph Node Dissection in Patients With Stage IIIB/C Melanoma and Major Pathological Response in the Index Lymph Node After Neoadjudvant Immunotherapy
1 other identifier
interventional
213
1 country
1
Brief Summary
Rationale: The randomized trial NADINA has demonstrated that neoadjuvant treatment with nivolumab with ipilimumab improves event-free survival (EFS) in patients with macroscopic resectable stage III melanoma. In this study, therapeutic lymph node dissection (TLND) was standard of care, showing that patients achieving a major pathological response (MPR, i.e., ≤10% residual viable tumor bed) have an excellent outcome (EFS and Distant Metastasis Free Survival (DMFS)). The PRADO trial indicated that the MPR definition can also be revealed from a surrogate lymph node response, the index lymph node (ILN), allowing sparing the extensive surgery in MPR patients. In these MPR patients the DMFS was 100% after 1 year and 98% after 2 years, and recurrence-free survival (RFS) was 95% after 1 year and 93% after 2 years. Given that TLND is associated with morbidity and has a significant impact on health-related quality of life (HR-QoL) and healthcare costs, this study aims to prospectively investigate the safety of omitting TLND in patients who have an MPR within the ILN after neoadjuvant immunotherapy. Objectives: To investigate whether TLND can be safely omitted in patients with macroscopic resectable stage III (B/C/D) melanoma achieving an MPR within the ILN upon neoadjuvant treatment with immune checkpoint inhibitors (ipilimumab and nivolumab). Study design: This study is a prospective, single-arm phase 2 nationwide multicenter trial. Study population: Inclusion criteria for study participants are as follows:
- Patients must be eligible for neoadjuvant treatment
- Patients must have a histologically confirmed diagnosis of macroscopic resectable stage III melanoma (stage III B/C/D) with one or more macroscopic lymph node metastasis
- The patient must have a measurable tumor burden that qualifies (according to clinical practice) for neoadjuvant therapy Intervention: Omitting TLND in patients who achieve an MPR in the ILN following neoadjuvant ipilimumab and nivolumab. Main study endpoints: The two coprimary endpoints are 2-year Local Recurrence Free Survival (LRFS) and 2-year DMFS.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for not_applicable
Started Apr 2025
Longer than P75 for not_applicable
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
December 13, 2024
CompletedFirst Posted
Study publicly available on registry
January 1, 2025
CompletedStudy Start
First participant enrolled
April 23, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2027
ExpectedStudy Completion
Last participant's last visit for all outcomes
April 1, 2032
August 7, 2025
August 1, 2025
1.9 years
December 13, 2024
August 4, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (2)
Local Recurrence Free Survival (LRFS)
LRFS, as defined as time from removal of the index lymph node (ILN) until local (in basin) recurrence in the MPR group. Accepting a local relapse of 20%.
2 years after inclusion
Distant Metastasis Free Survival (DMFS)
DMFS assessed in the MPR group, as defined as time from the start of neoadjuvant immunotherapy, nivolumab with ipilimumab, until the first occurrence of distant metastasis. Accepting DMFS 3% lower than the 2 years DMFS of the NADINA trial
2 years after inclusion
Secondary Outcomes (9)
Evaluation of health-related quality of life (HRQoL), EORTC QLQ C30
3 years after inclusion
Evaluation of health-related quality of life (HRQoL), FACT-M
3 years after inclusion
Description of the pathological response rates in the ILN
1 year after inclusion
Evaluation of the surgical morbidity, CTCAE v5
2 year after inclusion
Evaluation of the surgical morbidity, Clavien Dindo
2 year after inclusion
- +4 more secondary outcomes
Study Arms (1)
Omitting TLND
EXPERIMENTALOmitting TLND in patients who achieve an MPR in the ILN following neoadjuvant ipilimumab and nivolumab.
Interventions
Omitting TLND in patients who achieve an MPR in the index node following neoadjuvant ipilimumab and nivolumab.
Eligibility Criteria
You may qualify if:
- Patients must be eligible for neoadjuvant treatment (ipilimumab and nivolumab)
- Patients must be 16 years of age or older.
- Patients must have a histologically confirmed diagnosis of macroscopic resectable stage III melanoma (stage III B/C/D) with one or more macroscopic lymph node metastase defined as either one:
- a palpable node, confirmed as melanoma by pathology; a non-palpable but enlarged lymph node according to RECISTv1.1 (at least 15 mm in short axis), confirmed as melanoma by pathology;
- a PET scan positive lymph node of any size confirmed as melanoma by pathology;
- The patient must have a measurable tumor burden that qualifies (according to clinical practice) for neoadjuvant therapy with immune checkpoint inhibitors
- Patients in whom ILN marking is feasible
- Written informed consent
You may not qualify if:
- Uveal/ocular or mucosal melanoma
- WHO performance status of two or more
- In-transit metastases only (without cytological or histological proven lymph node involvement)
- Prior targeted therapy targeting BRAF and/or MEK for melanoma
- Prior immunotherapy targeting CTLA-4, PD-1 or PD-L1 for melanoma
- Patients with (history of) distant metastasis (stage IV melanoma)
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Erasmus MC
Rotterdam, South Holland, 3015GD, Netherlands
Related Publications (2)
Blank CU, Lucas MW, Scolyer RA, van de Wiel BA, Menzies AM, Lopez-Yurda M, Hoeijmakers LL, Saw RPM, Lijnsvelt JM, Maher NG, Pulleman SM, Gonzalez M, Torres Acosta A, van Houdt WJ, Lo SN, Kuijpers AMJ, Spillane A, Klop WMC, Pennington TE, Zuur CL, Shannon KF, Seinstra BA, Rawson RV, Haanen JBAG, Ch'ng S, Naipal KAT, Stretch J, van Thienen JV, Rtshiladze MA, Wilgenhof S, Kapoor R, Meerveld-Eggink A, Grijpink-Ongering LG, van Akkooi ACJ, Reijers ILM, Gyorki DE, Grunhagen DJ, Speetjens FM, Vliek SB, Placzke J, Spain L, Stassen RC, Amini-Adle M, Lebbe C, Faries MB, Robert C, Ascierto PA, van Rijn R, van den Berkmortel FWPJ, Piersma D, van der Westhuizen A, Vreugdenhil G, Aarts MJB, Stevense-den Boer MAM, Atkinson V, Khattak M, Andrews MC, van den Eertwegh AJM, Boers-Sonderen MJ, Hospers GAP, Carlino MS, de Groot JB, Kapiteijn E, Suijkerbuijk KPM, Rutkowski P, Sandhu S, van der Veldt AAM, Long GV. Neoadjuvant Nivolumab and Ipilimumab in Resectable Stage III Melanoma. N Engl J Med. 2024 Nov 7;391(18):1696-1708. doi: 10.1056/NEJMoa2402604. Epub 2024 Jun 2.
PMID: 38828984BACKGROUNDReijers ILM, Menzies AM, van Akkooi ACJ, Versluis JM, van den Heuvel NMJ, Saw RPM, Pennington TE, Kapiteijn E, van der Veldt AAM, Suijkerbuijk KPM, Hospers GAP, Rozeman EA, Klop WMC, van Houdt WJ, Sikorska K, van der Hage JA, Grunhagen DJ, Wouters MW, Witkamp AJ, Zuur CL, Lijnsvelt JM, Torres Acosta A, Grijpink-Ongering LG, Gonzalez M, Jozwiak K, Bierman C, Shannon KF, Ch'ng S, Colebatch AJ, Spillane AJ, Haanen JBAG, Rawson RV, van de Wiel BA, van de Poll-Franse LV, Scolyer RA, Boekhout AH, Long GV, Blank CU. Personalized response-directed surgery and adjuvant therapy after neoadjuvant ipilimumab and nivolumab in high-risk stage III melanoma: the PRADO trial. Nat Med. 2022 Jun;28(6):1178-1188. doi: 10.1038/s41591-022-01851-x. Epub 2022 Jun 5.
PMID: 35661157BACKGROUND
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- OTHER
- Responsible Party
- SPONSOR INVESTIGATOR
- PI Title
- Associate professor
Study Record Dates
First Submitted
December 13, 2024
First Posted
January 1, 2025
Study Start
April 23, 2025
Primary Completion (Estimated)
April 1, 2027
Study Completion (Estimated)
April 1, 2032
Last Updated
August 7, 2025
Record last verified: 2025-08
Data Sharing
- IPD Sharing
- Will not share
We have decided not to share de-identified individual participant data, as the dataset is intended for exclusive use by the primary research group. Sharing the data with researchers outside of this group is not aligned with the original goals and agreements of the study. Should there be a need for collaboration or data sharing in the future, we will evaluate this in consultation with the relevant parties.