% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Reinhard:300116, author = {S. Reinhard and J. S. Utikal$^*$ and A. Zaremba$^*$ and G. Lodde$^*$ and I. von Wasielewski and K. C. Klespe and F. Meier and S. Haferkamp and K. C. Kähler and R. Herbst and C. Gebhardt and A. Sindrilaru and E. Dippel and Y. Angela and P. Mohr and C. Pfoehler and A. Forschner and M. Kaatz and B. Schell and A. Gesierich and C. Loquai and J. C. Hassel and J. Ulrich and F. Meiss and G. Schley and L. M. Heinzerling and M. Sachse and J. Welzel and C. Weishaupt and C. Sunderkötter and C. Michl and H.-H. Lindhof and A. Kreuter and M. V. Heppt and S. Wenk and C. Mauch and C. Berking and A. S. Nedwed and R. Gutzmer and U. Leiter and D. Schadendorf and S. Ugurel and M. Weichenthal and M. Haist and M. I. Fleischer and B. Lang and S. Grabbe and H. Stege}, title = {{F}irst-line checkpoint inhibitor therapy in metastatic acral lentiginous melanoma compared to other types of cutaneous melanoma: {A} multicenter study from the prospective skin cancer registry {ADOREG}.}, journal = {European journal of cancer}, volume = {220}, issn = {0959-8049}, address = {Amsterdam [u.a.]}, publisher = {Elsevier}, reportid = {DKFZ-2025-00614}, pages = {115356}, year = {2025}, abstract = {Melanoma is the main cause of skin cancer-related death. Treatment with immune checkpoint inhibitors (CPI) has improved the prognosis in recent years. However, subtypes of melanoma differ in their response. Acral lentiginous melanoma (ALM) has a worse prognosis compared to cutaneous melanoma other than ALM (CM) and is therefore of particular relevance.To evaluate the efficacy of CPI in first-line treatment of patients with advanced ALM compared CM.Retrospective analysis of patients with metastatic ALM (n = 45) or CM (n = 328) who received first-line CPI therapy from the multicenter prospective skin cancer registry ADOREG. Study endpoints were best overall response (BOR), progression-free survival (PFS) and overall survival (OS).ALM patients had significantly higher rates of ulcerated tumors, loco regional metastases and fewer BRAF-mutated tumors compared to CM patients. Combined CPI was administered in 48.9 $\%$ ALM patients and 39.3 $\%$ of CM patients, while the remaining patients received PD-1 monotherapy. OS trended to be shorter in patients with ALM (18.1 vs. 43.8 months, p = 0.10) with no significant differences in PFS (7.0 vs. 11.5 months, p = 0.21). In patients with CM, median OS with combined CPI was not reached, whereas the median OS after PD-1 monotherapy was 37.8 months (p = 0.22). Conversely, in patients with ALM, OS with combined CPI was 17.8 months, compared to 26 months with PD-1 monotherapy (p = 0.15). There were no significant differences in BOR between patients with ALM or CM.Analysis of this real-world cohort of patients with metastatic melanoma showed a trend towards poorer survival outcomes upon first-line treatment with CPI in ALM compared to cutaneous melanoma of other subtypes.}, keywords = {Checkpoint inhibition (Other) / Melanoma (Other) / Response (Other)}, cin = {A370 / ED01}, ddc = {610}, cid = {I:(DE-He78)A370-20160331 / I:(DE-He78)ED01-20160331}, pnm = {311 - Zellbiologie und Tumorbiologie (POF4-311)}, pid = {G:(DE-HGF)POF4-311}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:40121837}, doi = {10.1016/j.ejca.2025.115356}, url = {https://inrepo02.dkfz.de/record/300116}, }