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11 Background: Ilixadencel is a cell-based allogeneic off-the-shelf product aimed to prime anti-cancer immune response when injected intratumorally. The present randomized Phase II multicenter trial (MERECA; NCT02432846) evaluated intratumoral ilixadencel administration (2 doses 2 weeks apart) pre-nephrectomy followed by sunitinib post-nephrectomy compared with sunitinib monotherapy post-nephrectomy as first-line systemic therapy in patients with newly diagnosed synchronous metastatic renal cell carcinoma (mRCC). Methods: Patients were randomly assigned at two-to-one ratio to the combination (COMBO) or sunitinib (SUN) arm. Overall survival (OS) was assessed from enrollment while progression free survival (PFS) and tumor response was assessed per RECIST 1.1 (independent blinded central review) from start of sunitinib. Results: From April 2014 to January 2017, 88 patients (58 COMBO, 30 SUN) were randomized. In the COMBO arm, 2 patients did not receive ilixadencel, 10 did not receive sunitinib, and 1 did not have any follow up CT-scan. Five patients in the SUN arm never received sunitinib. Five patients (11%) in the COMBO arm had a complete response as best response versus one patient (4%) in the SUN arm. Confirmed ORR was 42.2 % (19/45) versus 24.0% (6/25). Median Duration of Response was 7.1 months versus 2.9 months. Median PFS was 11.8 months versus 11.0 months. Median OS has still not been reached in either group. As of July 2019, 57% and 43% were alive in the COMBO and SUN arms, respectively. Treatment with ilixadencel did not add any treatment-related Grade 3-4 Adverse Events. Conclusions: Compared to sunitinib monotherapy, combined treatment with ilixadencel followed by sunitinib demonstrated higher confirmed ORR, including several complete responses and longer duration of response, in patients with newly diagnosed synchronous mRCC. Clinical trial information: 02432846.

Summary:We present a patient with tracheoesophageal fistula as the initial manifestation of Hodgkin's disease with oesophageal involvement. To our knowledge, this has not been previously reported. The diagnosis of Hodgkin's lymphoma was made at autopsy.

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