Abstract Library

#1490 Even Malignant Appendiceal Neuroendocrine Tumors Exhibit No Recurrent Chromosomal Alterations

Introduction: Neuroendocrine tumors (NETs) of the midgut are located in the ileum (iNET), caecum or appendix (aNET). Despite of the similar origin, NETs of the ileum and the appendix behave remarkably different. iNETs show high malignant potential, which manifests with early lymph node or liver metastases. Genetically, the loss of chromosome 18 (Ch18) in 60-74% of cases is the most frequent alteration in iNETs. aNETs are often incidental findings, rarely show metastases, and no chromosomal alterations are known.

Conference: 13th Annual ENETSConcerence (2016)

Presenting Author: Sipos B

Authors: Nann D, Nieser M, Sperveslage J, Henopp T, Vokuhl C,

Keywords: NET,

#730 Loss of Chromosome 18 in Neuroendocrine Tumors of the Midgut

Introduction: The genetic alterations in neuroendocrine tumors (NET) of the midgut, in particular of the appendix (aNET), are poorly characterized. The most frequent chromosomal aberration in ileal NET (iNET) is the loss of one chromosome 18. The relevance of this alteration is unclear.

Conference: 10th Annual ENETSConcerence (2013)

Presenting Author:

Authors: Henopp T, Brix J, Sperveslage J, Anlauf M, Petersen K,

Keywords: chr18,

#700 Comparative Expression Analysis of Chromosome 18 Related miRNAs in Ileal NET with and without Chr18 Loss

Introduction: MicroRNAs (miRs) play important roles in many kinds of biological processes. Because the (partial) loss of one chromosome 18 (Chr18) is a frequent event in ileal NETs (iNETs), we assessed the potential deregulation of miR-expression in these patients.

Conference: 10th Annual ENETSConcerence (2013)

Presenting Author: Sperveslage J

Authors: Hoffmeister M, Sperveslage J, Henopp T, Anlauf M, Petersen K,

Keywords: NET, mir-expression,

#562 Expression of Chromosome 18 Related Tumor Suppressor Proteins in Ileal Neuroendocrine Tumors

Introduction: The genetic alterations in ileal neuroendocrine tumors (iNETs) are poorly characterized. The most frequent chromosomal aberration is the loss of one chromosome 18 in iNETs, however, the relevance of this alteration is unclear.

Conference: 9th Annual ENETSConcerence (2012)

Presenting Author:

Authors: Henopp T, Brix J, Sperveslage J, Anlauf M, Petersen K,

Keywords: chromosome 18, ileal NET, neuroendocrine,

#262 Changes on Chromosome 18 are Involved in Sporadic and Familial Ileal Carcinoid Tumor Development

Introduction: Small intestine neuroendocrine tumors (ileal carcinoid) is generally considered a sporadic disease. We have identified nine families with an ileal carcinoid tumor diagnosed in two or more individuals.

Conference: 8th Annual ENETSConcerence (2011)

Presenting Author:

Authors: Tiensuu Janson E, Cunningham J, Diaz de Ståhl T, Sjöblom T, Westin G,

Keywords: genetics, ileal carcinoid, familial, pedigrees,