Basic Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Feb 14, 2015; 21(6): 1794-1803
Published online Feb 14, 2015. doi: 10.3748/wjg.v21.i6.1794
Table 1 Mutation patterns of ten variants from Korean occult subjects found in the hepatitis B surface antigen region
Number173233364447525661667385101107111117126127129130134140145146158170172177182195204206220227
AminoacidALDWGTNPSPRFQCPSIPQGFTGNFFWVWISYF
Genotype A·····V··········T················
Genotype B····EV·Q···C····T················
Genotype C1·································
Genotype C2·································
Genotype D·····V··········T···Y············
Genotype E·····V··········TL···············
Genotype F·····R··········AL············N··
Nor (WT)·································
TN················T·N··············
TALRT····················A··L······R·
ALK··G··A··L···K··········D·····M···
KD···L·KD··························
CNR··········C····N···R·············
LL··············L·················L
PAHS·P···A···H·S·W········R··P··
172R··························R······
182L····························L····
Stop···························A
Table 2 Clinical, genotype, hepatitis B virus bDNA, and serologic data of the ten subjects with hepatitis B surface antigen variants used in the present study
SamplesAgeSexGenotypeHBV bDNA (copies/mL)HBsAgAnti-HBsMutationsAbbreviation
160FC2< 2000NegativeNegativeI126T, Q129NTN
253MC2< 2000NegativeNegativeA17T, T140A, F158L, Y206RTALR
360FC2< 2000NegativePositiveD33G, T47A, S61L, Q101K, N146D, I195MALK
454MC2< 2000NegativeNegativeW36L, T47K, N52DKD
544MC2< 2000NegativePositiveR73C, S117N, G130RCNR
641FC2< 2000NegativeNegativeP111L, F220LLL
742MC2< 2000NegativeNegativeL32P, T47A, P66H, F85S, C107W, G145R, F170P, W182StopPAHS
873MC2< 2000NegativeNegativeW172R172R
930MC2< 2000NegativePositiveW182L182L
103FC2< 2000NegativeNegativeV177A, W182StopStop
Table 3 Classification of the ten novel mutants according to the secretion level of hepatitis B surface antigen and viral DNA formation capacity
GroupingMutantssAg level
Viral DNA level
ExtracellularIntracellularExtracellularIntracellular
ITNPositivePositiveHigher than WTSimilar to WT
TALRPositivePositiveHigher than WTSimilar to WT
IIALKNegativeHighly positiveSimilar to WTSimilar to WT
KDNegativeHighly positiveSimilar to WTSimilar to WT
IIICNRNegativeWeakly positiveHigher than WTSimilar to WT
LLWeakly PositiveWeakly positiveHigher than WTHigher than WT
PAHSNegativeNegativeHigher than WTSimilar to WT
IV172RNegativeWeakly positiveLower than WTLower than WT
182LNegativeWeakly positiveLower than WTLower than WT
VStopNegativeNegativeNegativeNegative