TostudyIgGsubclassesforthehepatitisBvirus(HBV)coreantigen(anti-HBc)indifferentpopulations,acomparisonwasmadebetween104chroniccarriers(60maleand44female)and434recoveredinpiduals(247maleand192female).BiochemistryanalysesofAST(aspartateaminotransferase)andALT(alanineaminotransferase)werealsoperformed.Amongthe104chroniccarriers,21patientswerefoundtobeALTandASTabnormal(>25IU/ml).AftercomparingtheseALTandASTabnormalpatientswithotherALTandASTnormalchroniccarriers,nostatisticaldifferencewasobservedintheODvaluesoftheanti-HBe(p>0.05).TheELISAresultsshowedtheanti-HBcIgGsubclasspatternwasIgG1>IgG3>IgG4inchroniccarriersandIgG3>IgG1>IgG4inrecoveredinpiduals(p<0.05).ThisresultsuggeststheIgG1/IgG3ratiomayberelatedwithHBVstatus.However,inspiteofthedifferentanti-HBcIgG1/IgG3patternsdemonstratedindifferentpopulations,bothanti-HBcIgG1andIgG3concentrationsweresignificantlyhigherinchroniccarriers(p<0.05).Therefore,boththeanti-HBcIgG1/IgG3ratioandtheiramountsdiffered.Theymayplayasignificantroleinchroniccarriersandrecoveredinpiduals.Theanti-HBcIgGsubclassprofilesofchroniccarrierswerenotchangedregardlessofliverinflammation,andwereindependentofsexandage.Cellular&MolecularImmunology.