“…However, the virulent oncoprotein CagA was found significantly correlated to both vitamin B12 and ferritin deficiencies. Several literature reviews have shown controversial studies related to H. pylori , ferritin and vitamin B12 deficiencies [ [40] , [41] , [42] , [44] , [45] , [46] , [47] , [48] , [91] , [92] , [93] , [94] ] while few studies have explored the correlation between the oncoprotein CagA and ferritin, vitamin B12 deficiencies [ 43 , 95 ]. In the current study, the association between H. pylori , CagA, ferritin and vitamin B12 in the UAE population was investigated for the first time on a large scale.…”