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Letter to the Editor| Volume 153, P96-97, August 2021

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Successful rechallenge with avelumab in Merkel cell carcinoma

      Merkel cell carcinoma (MCC) is an aggressive neuroendocrine skin cancer associated with poor prognosis. Patients are often diagnosed at a metastatic stage and the treatment which consisted until recently in polychemotherapy was associated with relatively high objective response rates (ORR ranging from 20 to 61%), but very few complete responses (CR) and short duration response (1.3–3.3 months) [
      • Nghiem P.
      • Kaufman H.L.
      • Bharmal M.
      • Mahnke L.
      • Phatak H.
      • Becker J.C.
      Systematic literature review of efficacy, safety and tolerability outcomes of chemotherapy regimens in patients with metastatic Merkel cell carcinoma.
      ,
      • Iyer J.G.
      • Blom A.
      • Doumani R.
      • Lewis C.
      • Tarabadkar E.S.
      • Anderson A.
      • et al.
      Response rates and durability of chemotherapy among 62 patients with metastatic Merkel cell carcinoma.
      ].
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