The therapeutic use of humanized monoclonal anti-programmed cell death 1
(PD-1) (pembrolizumab, and nivolumab) and anti-programmed cell death
ligand1 (PD-L1) (atezolizumab, avelumab, durvalumab) as potent
anticancer therapies is rapidly increasing. The mechanism of signaling
of anti-PD-1/PD-L1 involves triggering cytotoxic CD4+/CD8+T cell
activation, which induces specific immunologic adverse events. The
anti-PD-1/PD-L1 drugs can cause numerous cases of cutaneous reactions,
hence these toxicities are characterized as the most frequent
immune-related adverse events (irAEs). The majority of cutaneous irAEs
triggered by immune checkpoint inhibitors range from nonspecific
eruptions to detectible skin manifestations, which may be self-limiting
and present an acceptable skin toxicity profile, while some may produce
mild to life-threatening complications. This review aims to illuminate
the associated cutaneous adverse events related to the drugs used in
oncology along with the relevant mechanism(s). With this review article,
an overview of the various adverse cutaneous manifestations of anti-PD-1
(pembrolizumab, and nivolumab) and anti-PD-L1 (atezolizumab, avelumab,
durvalumab) therapy, as well as suggestions, have been provided, so that
their recognition at early stages could help in better management and
would prevent treatment discontinuation.