Original ResearchCytomegalovirus reactivation in patients with refractory checkpoint inhibitor-induced colitis☆
Section snippets
Background
Recently, monoclonal antibodies directed against different immune checkpoints have revolutionised the therapy of locally advanced and metastatic malignant melanoma and other human malignancies. The anti-CTLA-4 antibody ipilimumab, the anti-PD-1 antibodies nivolumab and pembrolizumab as well as the combination of ipilimumab and nivolumab have shown increased progression-free and overall survival in several clinical studies in patients with advanced melanoma [1], [2], [3], [4], [5], [6]. While
Patient cohort
The skin cancer database of the Department of Dermatology of the University Hospital Essen was searched for melanoma patients treated with either ipilimumab, nivolumab, pembrolizumab or the combination of ipilimumab plus nivolumab between 2006 and 2016. Demographic as well as clinical data were collected for all identified patients. Digital patient records were then searched for the terms ‘diarrhea’ and ‘colitis’. Severity of irColitis was graded according to CTCAE version 4.03 criteria and
Patient cohort
In total, 370 patients were treated with checkpoint inhibitors from 2006 to 2016 at the Department of Dermatology of the University Hospital Essen. As shown in Table 1, 56.5% had received ipilimumab monotherapy, 35.7% PD-1 inhibitor monotherapy (pembrolizumab 22.7%, nivolumab 13%) and 7.8% the combination of ipilimumab and nivolumab. In the patient group with irColitis (n = 41, 11.1% of 370 patients), 73.2% of patients had received ipilimumab, 17.1% had received PD-1 inhibitors and 9.7% the
Discussion
IrColitis is a well-described adverse event of checkpoint inhibition. It can lead to fatal gastrointestinal perforations [9], [10], [11], [12] with deaths in around 1% of the patients treated with 10 mg/kg ipilimumab [13], [14]. Treatment algorithms have been established to standardise the treatment of irColitis. In most cases, irColitis responds to treatment with high-dose steroids with or without additional immune-modulators such as infliximab. Although checkpoint inhibitors recently have
Conflict of interest statement
None declared.
Acknowledgements
The authors would like to thank Marion Schwamborn for her technical support.
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2022, Materials and DesignCitation Excerpt :IrAEs are primarily managed using corticosteroids as the recommended first-line treatment and other second-line immunomodulatory agents that mainly target cytokines, autoantibodies, or T/B-cells [22-24]. However, these immunosuppressive therapies used to treat irAEs have potential drawbacks, such as opportunistic infections, reactivations of pre-existing viruses or bacteria, increased risk of compromising cancer immune surveillance, and worsening of pre-existing diseases including diabetes mellitus, hypertension, and mood disorders [14,25,26]. Maintaining immune homeostasis is still a challenge with immunomodulatory regimens used to limit and manage irAEs [22].
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This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors.
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These authors contributed equally.