ArticleTranslational oncology2024
First in human intraarterial delivery of tislelizumab for the treatment of pMMR locally advanced rectal cancer: A single-arm, open label, phase II clinical trial.
Article in Translational oncology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05957016 (Neoadjuvant Preoperative Arterial Intervention With Concurrent Chemoradiotherapy in Local Advanced Rectal Cancer), which is not on this map. Not yet cited in PubMed.
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The trial behind it
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Neoadjuvant Preoperative Arterial Intervention With Concurrent Chemoradiotherapy in Local Advanced Rectal Cancer
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12 authors.
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Abstract
backgroundIntravenous immune checkpoint inhibitors (ICIs) have shown efficacy in treating locally advanced rectal cancer (LARC), but concerns about systemic toxicity persist. This study developed a unique approach termed chemo-immuno-embolization with transcatheter rectal arterial intervention (CIETAI), aiming to enhance the anti-tumor response while minimizing systemic toxicity.
methodThis is a prospective, single-arm, phase II clinical trial conducted in Daping hospital. Patients with previously untreated stage II/III LARC underwent preoperative CIETAI combined with PD-1 inhibitor tislelizumab plus oxaliplatin, followed by standard concomitant chemoradiotherapy (capecitabine and 50.4 Gy radiation). Intravenous tislelizumab was administered for an additional two cycles.
resultsBetween January 2023 and December 2023, a total of 38 patients were enrolled. As the primary endpoint, 17 (44.74 %) patients achieved pathological complete response (TRG0), with a major pathologic response (MPR) rate of 65.79 %. The anal preservation rate was 84.21 % (32/38), and importantly, 15 of 21 patients with low rectal cancer achieved organ preservation with functional maintenance. Eight patients experienced grade 3-4 adverse events (AEs). All immune-related AEs were grade 1-2, with the most common being endocrine toxicity (5/6, 83.33 %). No grade 5 AEs occurred.
conclusionThis study provides preliminary evidence supporting the safety and efficacy of intraarterial tislelizumab delivery in the neoadjuvant setting for LARC. These promising results encourage further exploration in larger cohorts to validate the clinical impact of this novel CIETAI strategy.
trial registrationClinicalTrials.gov Identifier: NCT05957016.
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