Differential effects of corticosteroids and anti-TNF on tumor-specific immune responses: implications for the management of irAEs

TY - JOUR

T1 - Differential effects of corticosteroids and anti-TNF on tumor-specific immune responses

T2 - implications for the management of irAEs

AU - Draghi, Arianna

AU - Borch, Troels Holz

AU - Radic, Haja Dominike

AU - Chamberlain, Christopher Aled

AU - Gokuldass, Aishwarya

AU - Svane, Inge Marie

AU - Donia, Marco

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Up to 60% of patients treated with cancer immunotherapy develop severe or life threatening immune-related adverse events (irAEs). Immunosuppression with high dose corticosteroids, or tumor necrosis factor (TNF) antagonists in refractory cases, is the mainstay of treatment for irAEs. It is currently unknown what impact corticosteroids and anti-TNF have on the activity of antitumor T cells. In our study, the influence of clinically relevant doses of dexamethasone (corresponding to an oral dose of 10–125 mg prednisolone) and infliximab (anti-TNF) on the activation and killing ability of tumor-infiltrating lymphocytes (TILs) was tested in vitro. Overall, dexamethasone at low or intermediate/high doses impaired the activation (−46 and −62%, respectively) and tumor-killing ability (−48 and −53%, respectively) of tumor-specific TILs. In contrast, a standard clinical dose of infliximab only had a minor effect on T cell activation (−20%) and tumor killing (−10%). A 72-hr resting period after withdrawal of dexamethasone was sufficient to rescue the in vitro activity of TILs, while a short withdrawal did not result in a full rescue. In conclusion, clinically relevant doses of infliximab only had a minor influence on the activity of tumor-specific TILs in vitro, whereas even low doses of corticosteroids markedly impaired the antitumor activity of TILs. However, the activity of TILs could be restored after withdrawal of steroids. These data indirectly support steroid-sparing strategies and early initiation of anti-TNF therapy for the treatment of irAEs in immuno-oncology.

AB - Up to 60% of patients treated with cancer immunotherapy develop severe or life threatening immune-related adverse events (irAEs). Immunosuppression with high dose corticosteroids, or tumor necrosis factor (TNF) antagonists in refractory cases, is the mainstay of treatment for irAEs. It is currently unknown what impact corticosteroids and anti-TNF have on the activity of antitumor T cells. In our study, the influence of clinically relevant doses of dexamethasone (corresponding to an oral dose of 10–125 mg prednisolone) and infliximab (anti-TNF) on the activation and killing ability of tumor-infiltrating lymphocytes (TILs) was tested in vitro. Overall, dexamethasone at low or intermediate/high doses impaired the activation (−46 and −62%, respectively) and tumor-killing ability (−48 and −53%, respectively) of tumor-specific TILs. In contrast, a standard clinical dose of infliximab only had a minor effect on T cell activation (−20%) and tumor killing (−10%). A 72-hr resting period after withdrawal of dexamethasone was sufficient to rescue the in vitro activity of TILs, while a short withdrawal did not result in a full rescue. In conclusion, clinically relevant doses of infliximab only had a minor influence on the activity of tumor-specific TILs in vitro, whereas even low doses of corticosteroids markedly impaired the antitumor activity of TILs. However, the activity of TILs could be restored after withdrawal of steroids. These data indirectly support steroid-sparing strategies and early initiation of anti-TNF therapy for the treatment of irAEs in immuno-oncology.

KW - anti-TNF

KW - cancer immunotherapy

KW - corticosteroids

KW - immune-related adverse events

KW - in vitro tumor-killing

U2 - 10.1002/ijc.32080

DO - 10.1002/ijc.32080

M3 - Journal article

C2 - 30575963

AN - SCOPUS:85059557153

SN - 0020-7136

JO - Radiation Oncology Investigations

JF - Radiation Oncology Investigations

ER -