large multicenter study
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2021 ◽  
Vol 85 (3) ◽  
pp. AB110
Author(s):  
David X. Zheng ◽  
Ruth J. Geller ◽  
Lacey B. Robinson ◽  
Markus D. Boos ◽  
Carlos A. Camargo

Cancers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 3132
Author(s):  
Anna Pocurull ◽  
Cristina Herrera-Pariente ◽  
Sabela Carballal ◽  
Joan Llach ◽  
Ariadna Sánchez ◽  
...  

Gastric adenocarcinoma (GC) is a common tumor with high morbidity and mortality. Only 7% of patients with GC are diagnosed before age 50 (early onset gastric cancer (EOGC)), and their characteristics have been poorly described. We aimed to describe clinical, molecular, and genetic characteristics of EOGC. A total of 309 patients with EOGC were retrospectively studied in four Spanish centers. Personal information, family history, and tumor information were registered. Germinal genetic analysis was performed in patients who met current criteria of a hereditary syndrome at the time of diagnosis. The median age at diagnosis was 44 years. The majority (73.3%) of tumors were diffuse, and 78.3% were diagnosed in an advanced stage. Familial aggregation of GC was present in 18/117 (15.4%) cases, and 5/117 (4.3%) met criteria for familial GC. MMR-IHC was performed in 126/309 (40.7%) tumors: 4/126 (3.1%) had loss of expression in MLH1/PMS2, without an associated germline mutation. Sixteen germline genetic analyses were performed, detecting a pathogenic variant in four (25%) cases: one in BRCA2, one in TP53, and two in CDH1. Most EOGC are diffuse and diagnosed in an advanced stage. In these patients, DNA MMR system deficiency is uncommon. Although familial aggregation was observed in only 15% of cases, a germline mutation was found in 25% of patients tested with clinical criteria. This demonstrates that EOGC has a marked genetic heterogeneity, reinforcing the importance of an accurate genetic counseling and enhancing the emerging use of multigene panels.


2021 ◽  
Vol 93 (6) ◽  
pp. AB41-AB42
Author(s):  
Ross D. Segan ◽  
Ikuo Yana ◽  
Naoaki Okamoto

Author(s):  
Fred S. Sarfo ◽  
Joshua Akinyemi ◽  
Albert Akpalu ◽  
Kolawole Wahab ◽  
Joseph Yaria ◽  
...  

2021 ◽  
Vol 160 (6) ◽  
pp. S-288
Author(s):  
Masayasu Horibe ◽  
Eisuke Iwasaki ◽  
Yoshihisa Tsuji ◽  
Masamitsu Sanui ◽  
Toshihiko Mayumi ◽  
...  

2021 ◽  
Vol 12 (6) ◽  
pp. 880-889 ◽  
Author(s):  
Alessio Cortellini ◽  
Andrea De Giglio ◽  
Katia Cannita ◽  
Diego L. Cortinovis ◽  
Robin Cornelissen ◽  
...  

Author(s):  
Jaime Lora-Tamayo ◽  
Guillermo Maestro ◽  
Antonio Lalueza ◽  
Manuel Rubio-Rivas ◽  
Gracia Villarreal Paul ◽  
...  

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