Abstract Library

#4465 RET Lys666Asn has low MEN2-related tumours penetrance but may be associated with pheochromocytoma

Introduction: Multiple Endocrine Neoplasia type 2 (MEN2) is caused by germline pathogenic variants (PVs) in the RET proto-oncogene, leading to medullary thyroid carcinoma (MTC), pheochromocytoma, and primary hyperparathyroidism (PHPT). RET c.1998G>C, p.Lys666Asn is a rare PV, with 33 cases described thus far, and is associated with low penetrance of MEN2-related tumours, but its clinical significance remains incompletely understood.

Conference:

Presenting Author: Halperin R

Authors: Halperin R, Peshes-Yaloz N, Tirosh A, Twito O,

Keywords: MEN2, pheochromocytoma, hyperparathyroidism, medullary thyroid carcinoma,

#4317 Late diagnosis of MEN2A syndrome: Ten cases in one family

Introduction: Multiple endocrine neoplasia type 2 (MEN2) constitutes a rare hereditary cancer syndrome affecting various endocrine glands.

Conference:

Presenting Author:

Authors: Asanova A, Shutova A, Dzeranova L, Przhiyalkovskaya E, Pigarova E,

Keywords: MEN2A, RET, MTC, THYROIDECTOMY,

#4125 Durvalumab (D) plus Tremelimumab (T) for the treatment of patients with progressive, advanced medullary thyroid carcinoma (MTC) – DUTHY (GETNE-T1812) trial

Introduction: Evidence for immunotherapy (IT) in patients (pts) with MTC is limited and has shown modest activity.

Conference:

Presenting Author:

Authors: García-Álvarez A, Molina-Cerrillo J, Castelo B, Plana M, Iglesias L,

Keywords: Medullary thyroid carcinoma, Immunotherapy, durvalumab, tremelimumab, anti PD-L1, anti CTLA-4,

#3632 Medullary thyroid carcinoma and somatostatin analogues, a possible therapeutic choice in asymptomatic and slow radiological progression metastatic recurrent disease after surgery – Case report of a 22-years long term survival patient

Introduction: Medullary thyroid carcinoma (MTC) is a well-differentiated neuroendocrine tumor of the thyroid and accounts for 1%-2% of thyroid cancers in the United States. MTCs present with locoregional metastasis in 50% of patients and distant metastasis in 10%-15% at diagnosis. Treatment options for recurrent or progressive disease according to RECIST 1.1 criteria, are limited. Tyrosine kinase-inhibitors (TKI) are preferred as first-line systemic therapy. Although somatostatin analogues (SSA) may play a role in MTC, limited evidence is available.

Conference:

Presenting Author: Raia S

Authors: Raia S, Chiloiro S, Maratta M, Giampietro A, de Marinis L,

Keywords: medullary thyroid carcinoma (MTC), somatostatin analogues, survival,

#3540 Preoperative diagnosis impact on surgical strategies and outcomes in patients with medullary thyroid carcinoma

Introduction: Due to the difficulties with cytological identification of medullary thyroid carcinoma (MTC), the correct diagnosis is obtained postoperatively in a significant subset of patients.

Conference:

Presenting Author: Oleinikov K

Authors: Oleinikov K, Yaakov E, Mizrachi A, Hirsch D, Hirshoren N,

Keywords: cytology, preoperative diagnosis, medullary thyroid carcinoma, surgery outcome,