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Rollan, Antonio

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Rollan

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Antonio

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2022 - 20242
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    Proposal of minimum elements for screening and diagnosis of gastric cancer by an international Delphi consensus
    (2022) Kakushima, Naomi; Fujishiro, Mitsuhiro; Chan, Shannon Melissa; Cortas, George Adel; Dinis-Ribeiro, Mario; González, Robinson; Kodashima, Shinya; Lee, Sun-Young; Linghu, Enqiang; Mabe, Katsuhiro; Pan, Wensheng; Parra-Blanco, Adolfo; Pioche, Mathieu; Rollan, Antonio; Sumiyama, Kazuki; Tanimoto, Miguel; World Endoscopy Organization Stomach and Duodenal Diseases Committee
    The World Endoscopy Organization Stomach and Duodenal Diseases Committee extracted minimum elements for screening and diagnosis of gastric cancer (GC) in aim to support countries that do not have national guidelines on screening and diagnosis of GC. Current national or international guidelines were collected worldwide and recommendations were classified according to the quality of evidence and were finalized through a modified Delphi method. The minimum elements consist of seven categories: [1] Extraction of high-risk patients of GC before esophagogastroduodenoscopy (EGD), [2] Patients who need surveillance of GC, [3] Method to ensure quality of EGD for detection of GC, [4] Individual GC risk assessment by EGD, [5] Extraction of high-risk patients of GC after EGD [6] Qualitative or differential diagnosis of GC by EGD, and [7] Endoscopic assessment to choose the therapeutic strategy for GC. These minimum elements will be a guide to promote the elimination of GC among countries with a high incidence of GC who lack national guidelines or screening programs.
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    Quadruple therapies show a higher eradication rate compared to standard triple therapy for Helicobacter pylori infection within the LEGACy consortium. A multicenter observational study in European and Latin American countries
    (2024) Medel-Jara, Patricio; Reyes Placencia, Diego; Fuentes-López, Eduardo; Corsi, Oscar; Latorre, Gonzalo; Antón, Rosario; Jiménez, Elena; Miralles-Marco, Ana; Caballero, Carmelo; Boggino, Hugo; Cantero, Daniel; Barros, Rita; Santos-Antunes, João; Díez, Marc; Quiñones, Luis A.; Riquelme, Erick; Rollan, Antonio; Cerpa, Leslie C.; Valdés, Ivania; Nyssen, Olga P.; Moreira, Leticia; Gisbert, Javier P.; Camargo, M. Constanza; Ortiz-Olvera, Nayeli; Leon‐Takahashi, Alberto, M.; Ruiz-Garcia, Erika; Fernández-Figueroa, Edith A.; Garrido, Marcelo; Owen, Gareth I.; Cervantes, Andrés; Fleita, Tania; Riquelme, Arnoldo
    Introduction: Gastric cancer (GC) is one of the most lethal malignancies worldwide.Helicobacter pylori is the primary cause of GC; therefore, its eradication reduces therisk of developing this neoplasia. There is extensive evidence regarding quadrupletherapy with relevance to the European population. However, in Latin America, dataare scarce. Furthermore, there is limited information about the eradication ratesachieved by antibiotic schemes in European and Latin American populations.Objective: To compare the effectiveness of standard triple therapy (STT), quadrupleconcomitant therapy (QCT), and bismuth quadruple therapy (QBT) in six centers inEurope and Latin America.Methods: A retrospective study was carried out based on the LEGACy registry from2017 to 2022. Data from adult patients recruited in Portugal, Spain, Chile, Mexico,and Paraguay with confirmed H. pylori infection who received eradication therapyand confirmatory tests at least 1 month apart were included. Treatment success by each scheme was compared using a mixed multilevel Poisson regression, adjustingfor patient sex and age, together with country‐specific variables, including preva-lence of H. pylori antibiotic resistance (clarithromycin, metronidazole, and amoxi-cillin), and CYP2C19 polymorphisms.Results: 772 patients were incorporated (64.64% females; mean age of 52.93 years).The total H. pylori eradication rates were 75.20% (255/339) with STT, 88.70% (159/178) with QCT, and 91.30% (191/209) with QBT. Both quadruple therapies (QCT‐QBT) showed significantly higher eradication rates compared with STT, with anadjusted incidence risk ratio (IRR) of 1.25 (p: <0.05); and 1.24 (p: <0.05), respectively.The antibiotic‐resistance prevalence by country, but not the prevalence of CYP2C19polymorphism, showed a statistically significant impact on eradication success.Conclusions: Both QCT and QBT are superior to STT for H. pylori eradication whenadjusted for country‐specific antibiotic resistance and CYP2C19 polymorphism in asample of individuals residing in five countries within two continents.

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