Immunological correlates of treatment and response in stage IV malignant melanoma patients treated with Ipilimumab
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Immunological correlates of treatment and response in stage IV malignant melanoma patients treated with Ipilimumab. / Bjoern, Jon; Juul Nitschke, Nikolaj; Zeeberg Iversen, Trine; Schmidt, Henrik; Fode, Kirsten; Svane, Inge Marie.
I: OncoImmunology, Bind 5, Nr. 4, e1100788, 2016.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Immunological correlates of treatment and response in stage IV malignant melanoma patients treated with Ipilimumab
AU - Bjoern, Jon
AU - Juul Nitschke, Nikolaj
AU - Zeeberg Iversen, Trine
AU - Schmidt, Henrik
AU - Fode, Kirsten
AU - Svane, Inge Marie
PY - 2016
Y1 - 2016
N2 - ABSTRACT: Introduction: Ipilimumab is effective in the treatment of metastatic malignant melanoma, but few biomarkers reliably predict treatment response. Methods: Patients were treated with Ipilimumab for metastatic malignant melanoma. Blood and serum samples were collected before and during treatment. Mononuclear cells in peripheral blood were subjected to immune phenotypic analyses and cytokine levels were measured in serum samples. Results were correlated with clinical data. Results: A total of 40 patients were included in the analyses. Clinical response were associated with an increase after one series of treatment in absolute lymphocyte count (ALC) (p = 0.008), absolute T cell count (p = 0.02) and the absolute number of activated T cells in peripheral blood (p = 0.003). A high frequency of myeloid derived suppressor cells (MDSC) and a higher level of IL6 were associated with treatment failure, though not significantly. Levels of IL6 in serum above the median showed a tendency to associate with reduced survival by the 4th treatment series. Finally, treatment with Ipilimumab led to a decreased frequency of FOXP3+ regulatory T cells (p = 0.009). Conclusion: Ipilimumab leads to increased ALC, T cell count and T cell activation in malignant melanoma patients responding to treatment. A high baseline frequency of myeloid-derived suppressor cells and high levels of IL6 is associated with a reduced chance of responding to therapy.
AB - ABSTRACT: Introduction: Ipilimumab is effective in the treatment of metastatic malignant melanoma, but few biomarkers reliably predict treatment response. Methods: Patients were treated with Ipilimumab for metastatic malignant melanoma. Blood and serum samples were collected before and during treatment. Mononuclear cells in peripheral blood were subjected to immune phenotypic analyses and cytokine levels were measured in serum samples. Results were correlated with clinical data. Results: A total of 40 patients were included in the analyses. Clinical response were associated with an increase after one series of treatment in absolute lymphocyte count (ALC) (p = 0.008), absolute T cell count (p = 0.02) and the absolute number of activated T cells in peripheral blood (p = 0.003). A high frequency of myeloid derived suppressor cells (MDSC) and a higher level of IL6 were associated with treatment failure, though not significantly. Levels of IL6 in serum above the median showed a tendency to associate with reduced survival by the 4th treatment series. Finally, treatment with Ipilimumab led to a decreased frequency of FOXP3+ regulatory T cells (p = 0.009). Conclusion: Ipilimumab leads to increased ALC, T cell count and T cell activation in malignant melanoma patients responding to treatment. A high baseline frequency of myeloid-derived suppressor cells and high levels of IL6 is associated with a reduced chance of responding to therapy.
KW - CTLA-4
KW - IL-6
KW - Immunotherapy
KW - Ipilimumab
KW - Malignant Melanoma
KW - Myeloid-derived Suppressor Cells (MDSC)
KW - Regulatory T Cells (Tregs)
U2 - 10.1080/2162402X.2015.1100788
DO - 10.1080/2162402X.2015.1100788
M3 - Journal article
C2 - 27141381
AN - SCOPUS:84962802928
VL - 5
JO - OncoImmunology
JF - OncoImmunology
SN - 2162-4011
IS - 4
M1 - e1100788
ER -
ID: 179126664