Efficacy and toxicity of rechallenge with combination immune checkpoint blockade in metastatic melanoma: a case series

Abstract

Background

The efficacy and potential toxicity of rechallenge with combination ipilimumab and nivolumab has not been described. Retreatment of patients with immune checkpoint inhibitors in the setting of prior significant toxicity lacks evidence-based guidance.

Methods

We present the first three, consecutive patients who received re-treatment with combination ipilimumab and nivolumab for metastatic melanoma managed at our institution.

Results

Rechallenge with combination ipilimumab and nivolumab in the setting of prior grade 3 toxicity with initial combination therapy is feasible, and responses are seen. We highlight the fact that grade 3 toxicity is likely to recur, but if so, can be manageable.

Conclusions

Retreatment with ipi + nivo may be considered an option in carefully selected, well-informed patients. More research is required to delineate the benefits and risks with this approach.

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