{Reference Type}: Letter {Title}: Detection of signature double-negative T cells is a predictive marker to identify autoimmune lymphoproliferative syndrome associated with FAS loss of function. {Author}: Eisenhauer N;Miano M;Naumann-Bartsch N;Leyh J;Dell'Orso G;Aigner M;Fecker G;Hinze C;Wittkowski H;Bruns H;Zierk J;Metzler M;Arkwright PD;Graw F;Mackensen A;Völkl S; {Journal}: Am J Hematol {Volume}: 99 {Issue}: 5 {Year}: 2024 05 14 {Factor}: 13.265 {DOI}: 10.1002/ajh.27286