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    Ablation of soft tissue tumours by long needle variable electrode-geometry electrochemotherapy: final report from a single-arm, single-centre phase-2 study

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    Authors
    Simioni, A
    Valpione, Sara
    Granziera, E
    Rossi, CR
    Cavallin, F
    Spina, R
    Sieni, E
    Aliberti, C
    Stramare, R
    Campana, LG
    Affiliation
    University of Padova School of Medicine and Surgery, Padova, Italy
    Issue Date
    2020
    
    Metadata
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    Abstract
    Standard electrochemotherapy (ECT) is effective in many tumour types but is confined to the treatment of small superficial lesions. Variable electrode-geometry ECT (VEG-ECT) may overcome these limitations by using long freely-placeable electrodes. Patients with bulky or deep-seated soft-tissue malignancies not amenable to resection participated in a single-arm phase-2 study (ISRCTN.11667954) and received a single course of VEG-ECT with intravenous bleomycin (15,000 IU/m2) and concomitant electric pulses applied through an adjustable electrode array. The primary outcome was radiologic complete response rate (CRR) per RECIST; secondary endpoints included feasibility, metabolic response, toxicity (CTCAE), local progression-free survival (LPFS) and patient perception (EQ-5D). During 2009-2014, we enrolled 30 patients with trunk/limb sarcomas, melanoma, Merkel-cell carcinoma, and colorectal/lung cancer. Median tumour size was 4.7?cm. Electrode probes were placed under US/TC guidance (28 and 2 patients, respectively). Median procedure duration was 80?minutes. Tumour coverage rate was 97% (29 of 30 patients). Perioperative side-effects were negligible; one patient experienced grade-3 ulceration and infection. One-month 18F-FDG-SUV decreased by 86%; CRR was 63% (95% CI 44-79%). Local control was durable in 24 of 30 patients (two-year LPFS, 62%). Patients reported an improvement in "usual activities", "anxiety/depression", and "overall health" scores. VEG-ECT demonstrated encouraging antitumour activity in soft-tissue malignancies; a single course of treatment produced high and durable responses, with low complications.
    Citation
    Simioni A, Valpione S, Granziera E, Rossi CR, Cavallin F, Spina R, et al. Ablation of soft tissue tumours by long needle variable electrode-geometry electrochemotherapy: final report from a single-arm, single-centre phase-2 study. Sci Rep. 2020;10(1):2291.
    Journal
    Scientific Reports
    URI
    http://hdl.handle.net/10541/622797
    DOI
    10.1038/s41598-020-59230-w
    PubMed ID
    32042142
    Additional Links
    https://dx.doi.org/10.1038/s41598-020-59230-w
    Type
    Article
    Language
    en
    ae974a485f413a2113503eed53cd6c53
    10.1038/s41598-020-59230-w
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