Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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Κυριακή 9 Μαΐου 2021

Response to immune checkpoint inhibitor rechallenge after high-grade immune related adverse events in patients with advanced melanoma

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imageTwenty to sixty percent of patients receiving immune checkpoint inhibitors (ICIs) experience high-grade immune-related adverse events (irAEs) which may prevent the continuation of treatment. Limited clinical evidence is available to guide treatment for these patients. Patients with stage IV or unresectable stage III melanoma at NYU Langone Health were reviewed from 1 January 2014 to 1 July 2019. Patients with first-line ICI systemic therapy, a high-grade irAE and a rechallenge with ICI therapy were included. Postrechallenge irAE recurrence, response rate, overall survival (OS) and progression-free survival (PFS) were evaluated. Postrechallenge irAEs recurred in 71.9% (n = 23/32) of patients at a median of 5.1 weeks from rechallenge, with 46.9% (15/32) recurring as high-grade events. Clinical response was achieved in 46.9% (15/32) of patients, including 40.6% (13/32) with a complete response and 6.3% (2/32) with partial response. Median OS from first ICI initiation was 85.4 weeks (45.7–140.7; 25th—75th percentile) and median PFS was 42.9 weeks (29.2–114.2; 25th–75th percentile). Patients with a shorter time to initial irAE and shorter time to postrechallenge irAE were at greater risk for disease progression [hazard ratio 7.80; 95% confidence interval (CI), 1.91–32.83; P = 0.004; hazard ratio 7.45, 95% CI, 1.57–35.35; P = 0.012). Those with greater duration to rechallenge (>10 weeks) were at lower risk for disease progression (hazard ratio 0.15, 0.03–0.68; P = 0.015). ICI rechallenge can be considered in patients with advanced melanoma, as the risk-ben efit profile appears favorable. Treatment toxicity should be appropriately managed, as longer durations to rechallenge may lower the risk of disease progression.
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