I have Stage 4 CC, and am six months into treatment with Libtayo (cemiplimab). I have started to experience stiffness and numbness in my hands and feet. They aren’t swollen, or even tingly like with neuropathy, just cold and stiff. It is worse when I get cold, and in the few days after my infusion.
There are a number of recent studies on this side effect:
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Raynaud’s Phenomenon From PD-1 Immune Checkpoint Inhibition, 2020
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Late‐Onset Immunotherapy Toxicity and Delayed Autoantibody Changes: Checkpoint Inhibitor–Induced Raynaud’s‐Like Phenomenon, 2020
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Rheumatologic complications of checkpoint inhibitor immunotherapy, 2022
I would love to connect with anyone who has had or is currently experiencing something similar!