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Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life
Somatostatin analogues (SSAs) have shown limited and variable antiproliferative effects in neuroendocrine tumours (NETs). Whether tumour control by SSAs depends on grading based on the 2010 WHO NET classification is still unclear. The aim of this study is to evaluate the efficacy of long-acting SSAs...
Autores principales: | , , , , , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Impact Journals LLC
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4868704/ https://www.ncbi.nlm.nih.gov/pubmed/26701729 http://dx.doi.org/10.18632/oncotarget.6686 |
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author | Faggiano, Antongiulio Carratù, Anna Chiara Guadagno, Elia Tafuto, Salvatore Tatangelo, Fabiana Riccardi, Ferdinando Mocerino, Carmela Palmieri, Giovannella Damiano, Vincenzo Siciliano, Roberta Leo, Silvana Mauro, Annamaria Tozzi, Lucia Franca Battista, Claudia De Rosa, Gaetano Colao, Annamaria |
author_facet | Faggiano, Antongiulio Carratù, Anna Chiara Guadagno, Elia Tafuto, Salvatore Tatangelo, Fabiana Riccardi, Ferdinando Mocerino, Carmela Palmieri, Giovannella Damiano, Vincenzo Siciliano, Roberta Leo, Silvana Mauro, Annamaria Tozzi, Lucia Franca Battista, Claudia De Rosa, Gaetano Colao, Annamaria |
author_sort | Faggiano, Antongiulio |
collection | PubMed |
description | Somatostatin analogues (SSAs) have shown limited and variable antiproliferative effects in neuroendocrine tumours (NETs). Whether tumour control by SSAs depends on grading based on the 2010 WHO NET classification is still unclear. The aim of this study is to evaluate the efficacy of long-acting SSAs in NETs according to Ki67 index. An observational Italian multicentre study was designed to collect data in patients with gastro-entero-pancreatic or thoracic NETs under SSA treatment. Both retrospective and prospective data were included and they were analysed in line with Ki67 index, immunohistochemically evaluated in tumour samples and graded according to WHO classification (G1 = Ki67 index 0-2%, G2 = Ki67 index 3-20%, G3 = Ki67 index > 20%). Among 601 patients with NET, 140 with a histologically confirmed gastro-entero-pancreatic or thoracic NET or NET with unknown primary were treated with lanreotide autogel or octreotide LAR. An objective tumour response was observed in 11%, stability in 58% and progression in 31%. Objective response and tumour stability were not significantly different between G1 and G2 NETs. Progression free survival was longer but not significantly different in G1 than G2 NETs (median: 89 vs 43 months, p = 0.15). The median PFS was significantly longer in NETs showing Ki67 < 5% than in those showing Ki67 ≥5% (89 vs 35 months, p = 0.005). SSA therapy shows significant antiproliferative effects in well differentiated low/intermediate-proliferating NETs, not only G1 but also in G2 type. A Ki67 index of 5% seems to work better than 3% to select the best candidates for SSA therapy. |
format | Online Article Text |
id | pubmed-4868704 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Impact Journals LLC |
record_format | MEDLINE/PubMed |
spelling | pubmed-48687042016-05-20 Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life Faggiano, Antongiulio Carratù, Anna Chiara Guadagno, Elia Tafuto, Salvatore Tatangelo, Fabiana Riccardi, Ferdinando Mocerino, Carmela Palmieri, Giovannella Damiano, Vincenzo Siciliano, Roberta Leo, Silvana Mauro, Annamaria Tozzi, Lucia Franca Battista, Claudia De Rosa, Gaetano Colao, Annamaria Oncotarget Research Paper Somatostatin analogues (SSAs) have shown limited and variable antiproliferative effects in neuroendocrine tumours (NETs). Whether tumour control by SSAs depends on grading based on the 2010 WHO NET classification is still unclear. The aim of this study is to evaluate the efficacy of long-acting SSAs in NETs according to Ki67 index. An observational Italian multicentre study was designed to collect data in patients with gastro-entero-pancreatic or thoracic NETs under SSA treatment. Both retrospective and prospective data were included and they were analysed in line with Ki67 index, immunohistochemically evaluated in tumour samples and graded according to WHO classification (G1 = Ki67 index 0-2%, G2 = Ki67 index 3-20%, G3 = Ki67 index > 20%). Among 601 patients with NET, 140 with a histologically confirmed gastro-entero-pancreatic or thoracic NET or NET with unknown primary were treated with lanreotide autogel or octreotide LAR. An objective tumour response was observed in 11%, stability in 58% and progression in 31%. Objective response and tumour stability were not significantly different between G1 and G2 NETs. Progression free survival was longer but not significantly different in G1 than G2 NETs (median: 89 vs 43 months, p = 0.15). The median PFS was significantly longer in NETs showing Ki67 < 5% than in those showing Ki67 ≥5% (89 vs 35 months, p = 0.005). SSA therapy shows significant antiproliferative effects in well differentiated low/intermediate-proliferating NETs, not only G1 but also in G2 type. A Ki67 index of 5% seems to work better than 3% to select the best candidates for SSA therapy. Impact Journals LLC 2015-12-19 /pmc/articles/PMC4868704/ /pubmed/26701729 http://dx.doi.org/10.18632/oncotarget.6686 Text en Copyright: © 2016 Faggiano et al. http://creativecommons.org/licenses/by/2.5/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. |
spellingShingle | Research Paper Faggiano, Antongiulio Carratù, Anna Chiara Guadagno, Elia Tafuto, Salvatore Tatangelo, Fabiana Riccardi, Ferdinando Mocerino, Carmela Palmieri, Giovannella Damiano, Vincenzo Siciliano, Roberta Leo, Silvana Mauro, Annamaria Tozzi, Lucia Franca Battista, Claudia De Rosa, Gaetano Colao, Annamaria Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title | Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title_full | Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title_fullStr | Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title_full_unstemmed | Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title_short | Somatostatin Analogues according to Ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
title_sort | somatostatin analogues according to ki67 index in neuroendocrine tumours: an observational retrospective-prospective analysis from real life |
topic | Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4868704/ https://www.ncbi.nlm.nih.gov/pubmed/26701729 http://dx.doi.org/10.18632/oncotarget.6686 |
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