10 research outputs found

    Additional file 2: of PD-L1 assessment in pediatric rhabdomyosarcoma: a pilot study

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    Figure S1 PD-L1 expression pre and post therapy. Changes in PD-L1 expression are revealed in pre- and post-treatment RMS tissue from the same patients: RMS24, RMS18, RMS22 (A,C and E), all at diagnosis and with no prior treatment, show absence or a mild expression of PD-L1 in the immune component; RMS25, RMS19, RMS23 (B,D and F), all following several lines of treatments, mainly chemotherapy, display a moderate expression in the immune contexture outside and infiltrating the tumor burden. (PPTX 6110 kb

    ALK FISH examples.

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    <p>Gain of ALK GCN (including both low and high genomic gain) was defined as a mean of 3 to 5 fusion signals in ≥10% of cells (Figure on right). Disomic cells are shown in Figure on left.</p

    Supplementary Material for: The Clinicopathologic Heterogeneity of Grade 3 Gastroenteropancreatic Neuroendocrine Neoplasms: Morphological Differentiation and Proliferation Identify Different Prognostic Categories

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    <b><i>Background/Aims:</i></b> Gastroenteropancreatic (GEP) neuroendocrine carcinomas (NECs) are defined as neuroendocrine neoplasms (NENs) with a Ki-67 index >20% according to the 2010 WHO classification. Some reports suggest that this category is heterogeneous. We retrospectively studied a series of 136 patients affected by grade 3 GEP-NECs with the aim to clarify the prognostic role of tumor morphological differentiation, proliferation, defect in mismatch repair proteins (MMRd), CD117 expression, and site of origin. The primary endpoint was the correlation between these parameters and the overall survival (OS). <b><i>Methods:</i></b> Univariate and multivariable Cox proportional hazards regression analyses were used to assess the prognostic significance of various clinical and histopathologic features. <b><i>Results:</i></b> With a median follow-up of 81 months, the median OS was 12.9 months. At multivariate analysis, morphological differentiation, Ki-67 index, MMRd, stage, and CD117 expression were independent prognostic markers in NECs. Three different prognostic categories of NECs were identified according to the degree of morphologic differentiation (well vs. poorly differentiated) and Ki-67 index (<55% vs. ≥55%). On this basis, median OS was 43.6 months in well-differentiated neoplasms with a Ki-67 index 20-55% (named type A), 24.5 months in poorly differentiated neoplasms with a Ki-67 index 20-55% (type B), and 5.3 months (p < 0.0001) in poorly differentiated neoplasms with a Ki-67 index ≥55% (type C). <b><i>Conclusions:</i></b> The present study suggests that GEP-NECs represent a heterogeneous group of neoplasms which can be better classified in different prognostic categories using both tumor morphology and Ki-67 index
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