Abstract Library

#4638 Prognostic role of the kynurenine/tryptophan pathway and inflammatory cytokines in neuroendocrine tumour progression: A cross-sectional analysis

Introduction: Indoleamine-2,3-dioxygenase (IDO) converts L-tryptophan (T) to L-kynurenine (K) resulting in an immunosuppressive microenvironment.

Conference:

Presenting Author: Mancini C

Authors: Mancini C, Pecora G, Salerno G, Lionetto L, Visco V,

Keywords: Neuroendocrine Tumour, tryptophan, kynurenine, cytokines, immunotherapy, Indoleamine-2-3-dioxygenase,

#4579 Real-world effectiveness of lanreotide autogel in patients with advanced gastroenteropancreatic neuroendocrine tumours with antigen Ki-67 proliferation index above and below 10%: The KINETICS study

Introduction: The somatostatin analogue lanreotide is an established treatment option for patients with gastroenteropancreatic neuroendocrine tumours (GEP-NETs) with a Ki-67 proliferation index (Ki-67)

Conference:

Presenting Author: Vandamme T

Authors: Vandamme T, Gerard L, Del Olmo-Garcia M, de Mestier L, Kiesewetter B,

Keywords: effectiveness, gastroenteropancreatic neuroendocrine tumour, GEP-NET, Ki-67 proliferation index, Ki-67, lanreotide, somatostatin analogue, somatostatin, real-world,

#4506 Matching adjusted indirect comparison (MAIC) of [177Lu]Lu-DOTA-TATE (177Lu-DOTATATE) vs. streptozocin-based chemotherapies (STZ-BC) as first-line (1L) treatment for advanced grade 2/3 (G2/G3) pancreatic NETs (pNETs)

Introduction: The NETTER-2 trial showed improved progression-free survival (PFS) with 1L 177Lu-DOTATATE vs. high dose octreotide in advanced G2/G3 pNETs. No published evidence exists comparing 177Lu-DOTATATE with other recommended 1L treatments, such as STZ-BC, hence indirect comparisons need to be conducted.

Conference:

Presenting Author: Navalkissoor S

Authors: Navalkissoor S, Capdevila J, Deshayes E, Gerard L, Srirajaskanthan R,

Keywords: pancreatic neuroendocrine tumour, [177lu]lu-dotatate, streptozocin, 5-fluorouracil, matching adjusted indirect comparison,

#4504 Matching adjusted indirect comparison (MAIC) of [177Lu]Lu-DOTA-TATE (177Lu-DOTATATE) vs. CAPTEM as first-line (1L) treatment for advanced grade 3 (G3) gastroenteropancreatic neuroendocrine tumours (GEP-NETs)

Introduction: The NETTER-2 trial showed a significant progression-free survival (PFS) benefit with 1L 177Lu-DOTATATE vs. high dose octreotide for patients with advanced G2/G3 GEP-NETs. No published evidence exists comparing 177Lu-DOTATATE with other recommended 1L treatments for patients with G3 GEP-NETs, such as capecitabine + temozolomide (CAPTEM), hence indirect comparisons need to be conducted.

Conference:

Presenting Author: Deshayes E

Authors: Deshayes E, Capdevila J, Gerard L, Navalkissoor S, Srirajaskanthan R,

Keywords: gastroenteropancreatic neuroendocrine tumour, [177lu]lu-dotatate, capecitabine, temozolomide, matching adjusted indirect comparison,

#4383 Clinical and biological heterogeneity of grade 2 gastroenteropancreatic neuroendocrine neoplasms (GEP NENs): Prognostic significance of the 10% Ki-67 index cutoff and implications for treatment strategies

Introduction: Gastroenteropancreatic neuroendocrine neoplasms (GEP NENs) are a diverse group of neoplasms with varying prognoses. Grade 2 (G2) tumours, with a Ki-67 index between 3%-20%, present management challenges due to their intermediate behaviour, with evidence suggesting distinct outcomes between Ki-67

Conference:

Presenting Author: Massironi S

Authors: Massironi S, Coltro L, Gallo C, Preatoni P, Dell' Anna G,

Keywords: Neuroendocrine neoplasm, Ki-67 Index, Grade 2 Neuroendocrine Tumour, Neoplasm Grading, Tumour Heterogeneity, Progression-Free Survival (PFS), Peptide Receptor Radionuclide Therapy,