Abstract |
Immune checkpoint inhibitors (ICI), including monoclonal antibodies to programmed death 1, programmed death ligand 1, and cytotoxic T lymphocyte-associated antigen 4, have provided great therapeutic benefits for cancer patients at advanced stages. However, the introduction of ICI frequently results in the development of immune-related adverse events (irAE) through activation of autoreactive T cells. Here, we present three cases of cancer patients with cutaneous irAE, including development of de novo psoriasis and exacerbation of pre-existing psoriasis. Interestingly, these patients shared an altered histological feature characterized by loss of epidermal CD1a+ cells, namely Langerhans cells (LC), in the psoriasiform lesions in contrast to "conventional psoriasis" exhibiting unchanged or activated LC. A possible underlying mechanism was that ICI-mediated hyperactivation of effector T cells contributed to aggravation or establishment of psoriasis phenotype, which might be associated with direct cytotoxicity or expulsion of LC from the epidermis.
|
Authors | Misaki Kase, Yasuyuki Fujita, Asako Ota, Satoko Shimizu, Saori Itoi-Ochi, Shigetoshi Sano |
Journal | The Journal of dermatology
(J Dermatol)
Vol. 49
Issue 9
Pg. 916-920
(Sep 2022)
ISSN: 1346-8138 [Electronic] England |
PMID | 35545886
(Publication Type: Journal Article)
|
Copyright | © 2022 Japanese Dermatological Association. |
Chemical References |
- Antineoplastic Agents, Immunological
- Immune Checkpoint Inhibitors
|
Topics |
- Antineoplastic Agents, Immunological
(adverse effects)
- Humans
- Immune Checkpoint Inhibitors
- Langerhans Cells
- Neoplasms
- Psoriasis
(chemically induced, drug therapy)
|