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Randomized, open-label, phase 2 study of nivolumab plus ipilimumab or nivolumab monotherapy in patients with advanced or metastatic solid tumors of high tumor mutational burden.


ABSTRACT:

Background

Checkpoint inhibitor therapy has demonstrated overall survival benefit in multiple tumor types. Tumor mutational burden (TMB) is a predictive biomarker for response to immunotherapies. This study evaluated the efficacy of nivolumab+ipilimumab in multiple tumor types based on TMB status evaluated using either tumor tissue (tTMB) or circulating tumor DNA in the blood (bTMB).

Patients and methods

Patients with metastatic or unresectable solid tumors with high (≥10 mutations per megabase) tTMB (tTMB-H) and/or bTMB (bTMB-H) who were refractory to standard therapies were randomized 2:1 to receive nivolumab+ipilimumab or nivolumab monotherapy in an open-label, phase 2 study (CheckMate 848; NCT03668119). tTMB and bTMB were determined by the Foundation Medicine FoundationOne® CDx test and bTMB Clinical Trial Assay, respectively. The dual primary endpoints were objective response rate (ORR) in patients with tTMB-H and/or bTMB-H tumors treated with nivolumab+ipilimumab.

Results

In total, 201 patients refractory to standard therapies were randomized: 135 had tTMB-H and 125 had bTMB-H; 82 patients had dual tTMB-H/bTMB-H. In patients with tTMB-H, ORR was 38.6% (95% CI 28.4% to 49.6%) with nivolumab+ipilimumab and 29.8% (95% CI 17.3% to 44.9%) with nivolumab monotherapy. In patients with bTMB-H, ORR was 22.5% (95% CI 13.9% to 33.2%) with nivolumab+ipilimumab and 15.6% (95% CI 6.5% to 29.5%) with nivolumab monotherapy. Early and durable responses to treatment with nivolumab+ipilimumab were seen in patients with tTMB-H or bTMB-H. The safety profile of nivolumab+ipilimumab was manageable, with no new safety signals.

Conclusions

Patients with metastatic or unresectable solid tumors with TMB-H, as determined by tissue biopsy or by blood sample when tissue biopsy is unavailable, who have no other treatment options, may benefit from nivolumab+ipilimumab.

Trial registration number

NCT03668119.

SUBMITTER: Schenker M 

PROVIDER: S-EPMC11308901 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature

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Publications

Randomized, open-label, phase 2 study of nivolumab plus ipilimumab or nivolumab monotherapy in patients with advanced or metastatic solid tumors of high tumor mutational burden.

Schenker Michael M   Burotto Mauricio M   Richardet Martin M   Ciuleanu Tudor-Eliade TE   Gonçalves Anthony A   Steeghs Neeltje N   Schoffski Patrick P   Ascierto Paolo A PA   Maio Michele M   Lugowska Iwona I   Lupinacci Lorena L   Leary Alexandra A   Delord Jean-Pierre JP   Grasselli Julieta J   Tan David S P DSP   Friedmann Jennifer J   Vuky Jacqueline J   Tschaika Marina M   Konduru Somasekhar S   Vemula Sai Vikram SV   Slepetis Ruta R   Kollia Georgia G   Pacius Misena M   Duong Quyen Q   Huang Ning N   Doshi Parul P   Baden Jonathan J   Di Nicola Massimo M  

Journal for immunotherapy of cancer 20240806 8


<h4>Background</h4>Checkpoint inhibitor therapy has demonstrated overall survival benefit in multiple tumor types. Tumor mutational burden (TMB) is a predictive biomarker for response to immunotherapies. This study evaluated the efficacy of nivolumab+ipilimumab in multiple tumor types based on TMB status evaluated using either tumor tissue (tTMB) or circulating tumor DNA in the blood (bTMB).<h4>Patients and methods</h4>Patients with metastatic or unresectable solid tumors with high (≥10 mutation  ...[more]

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