{Reference Type}: Letter {Title}: Identification of a novel frameshift mutation in cathepsin C gene in a patient with coexisting Papillon-Lefevre syndrome and rheumatoid arthritis. {Author}: Hsieh CY;Lin YC;Cheng HC;Chang CY;Tu WT;Hsu CK;Tsai TF; {Journal}: J Eur Acad Dermatol Venereol {Volume}: 38 {Issue}: 5 {Year}: 2024 May 20 {Factor}: 9.228 {DOI}: 10.1111/jdv.19635