Response durability after cessation of immune checkpoint inhibitors in patients with metastatic Merkel cell carcinoma: a retrospective multicenter DeCOG study

H. M. Stege^*, M. Haist, S. Schultheis, M. I. Fleischer, P. Mohr, S. Ugurel, P. Terheyden, A. Thiem, F. Kiecker, U. Leiter, J. C. Becker, M. Meissner, J. Kleeman, C. Pföhler, J. Hassel, S. Grabbe, C. Loquai

^*Corresponding author for this work