New hope for tough melanoma: experimental drug targets resistant tumors

NCT ID NCT05529316

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This phase 2 trial tests a new drug called botensilimab, alone or with another drug balstilimab, in 150 people with advanced melanoma that stopped responding to prior immunotherapy. The goal is to see if these drugs can shrink tumors or slow the cancer's growth. Researchers will also monitor side effects and how long any benefits last.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

Botensilimab (alone or with balstilimab)

What this could lead to

If successful, this could offer a new treatment option for people with advanced melanoma that no longer responds to standard immunotherapy.

What could go wrong

This is an early-phase trial with only 150 participants, so results may not apply to everyone. The drugs may cause side effects or fail to shrink tumors.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

cutaneous melanoma melanoma metastatic melanoma

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • AP-HP Hopital Saint-Louis

    Paris, 75010, France

  • Azienda Ospedaliero Universitaria Senese

    Siena, 53100, Italy

  • Blokhin National Medical Research Oncology Centre

    Moscow, 115478, Russia

  • Branch Office of "Hadassah Medical Ltd"

    Moscow, 121205, Russia

  • CHU Amiens Picardie - Hopital Sud

    Amiens, 80054, France

  • CHU Grenoble-Alpes - Hopital Michallon

    La Tronche, 38700, France

  • CHU de Nantes

    Nantes, 44093, France

  • CHUV - Centre hospitalier universitaire vaudois

    Lausanne, 1011, Switzerland

  • Centre Eugene Marquis

    Rennes, 35042, France

  • Centre Leon Berard

    Lyon, 69008, France

  • Centro Gaucho Integrado de Oncologia, Hematologia, Ensino e Pesquisa

    Porto Alegre, 90110-270, Brazil

  • Centro de Pesquisas Clinicas da Fundação Doutor Amaral Carvalho

    Jaú, 17210-080, Brazil

  • Clinical Hospital Russian Railways - Medicine

    Saint Petersburg, 195271, Russia

  • Consorcio Hospital General Universitario de Valencia

    Valencia, 46014, Spain

  • Dana-Farber Cancer Institute

    Boston, Massachusetts, 02215, United States

  • Georgetown University Medical Center

    Washington D.C., District of Columbia, 20057, United States

  • Gustave Roussy

    Villejuif, France

  • Hospital A.C. Camargo Cancer Center

    São Paulo, 01509-010, Brazil

  • Hospital Clinic Barcelona

    Barcelona, 8036, Spain

  • Hospital General Universitario Gregorio Maranon

    Madrid, 28007, Spain

  • Hospital Sirio Libanes

    São Paulo, 01308-050, Brazil

  • Hospital Universitario 12 de Octubre

    Madrid, 28041, Spain

  • Hospital Universitario Vall d'Hebron

    Barcelona, 8035, Spain

  • Hospital Universitario Virgen Macarena

    Seville, 41009, Spain

  • INCA II - Instituto Nacional de Cancer Jose Alencar Gomes da Silva

    Rio de Janeiro, 20220-410, Brazil

  • IRCCS Istituto Romagnolo per lo Studio dei Tumori Dino Amadori - IRST S.r.l.

    Meldola, 47014, Italy

  • Istituto Nazionale Tumori IRCCS Fondazione G. Pascale

    Naples, 80131, Italy

  • John Theurer Cancer Center at Hackensack University Medical Center

    Hackensack, New Jersey, 07601, United States

  • Klinikum der Universitaet München

    München, 80377, Germany

  • LLC Medical Services

    Saint Petersburg, 194356, Russia

  • Moscow City Oncology Hospital #62

    Moscow, 143423, Russia

  • Mount Vernon Cancer Centre

    Middlesex, HA6 2RN, United Kingdom

  • Oncosite - Centro de Pesquisa Clinica Em Oncologia

    Ijuí, 98700-000, Brazil

  • Onkologikoa

    Donostia / San Sebastian, 20014, Spain

  • Petrov National Medical Research Center of Oncology

    Saint Petersburg, 197758, Russia

  • Providence Saint John's Health Center

    Santa Monica, California, 90404, United States

  • Real e Benemerita Associaçao Portuguesa de Beneficencia - A Beneficencia Portuguesa de Sao Paulo

    São Paulo, 01323-001, Brazil

  • Royal Marsden Foundation Trust

    London, SW3 6JJ, United Kingdom

  • Scottsdale Healthcare Hospitals DBA HonorHealth

    Scottsdale, Arizona, 85258, United States

  • The Christie NHS Foundation Trust

    Manchester, M20 4BX, United Kingdom

  • Universitaetsklinikum Essen

    Essen, 45122, Germany

  • Universitaetsklinikum Hamburg-Eppendorf

    Hamburg, 20246, Germany

  • Universitaetsklinikum Heidelberg

    Heidelberg, 69120, Germany

  • Universitaetsklinikum Tuebingen

    Tübingen, 72076, Germany

  • Universitaetsklinikum Würzburg

    Würzburg, 97080, Germany

  • Universitaetsmedizin der Johannes Gutenberg - Universitaet Mainz

    Mainz, 55131, Germany

  • Universitaetsspital Zuerich

    Zurich, CH-8091, Switzerland

  • Universitair Ziekenhuis Brussel

    Jette, 1090, Belgium

  • University Hospital Schleswig-Holstein

    Kiel, 24105, Germany

  • Virginia K. Crosson Cancer Center at St. Jude Medical Center

    Fullerton, California, 92835, United States

  • Yale University School of Medicine - Yale Cancer Center

    New Haven, Connecticut, 06520-8028, United States