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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Padarath K, Deroubaix A, Naicker P, Stoychev S, Kramvis A. Comparison of the Proteome of Huh7 Cells Transfected with Hepatitis B Virus Subgenotype A1, with or without G1862T. Curr Issues Mol Biol. 2024 Jul 04; 46(7):7032-7047. PMID: 39057060; PMCID: PMC11275860.
      Citations:    Fields:    
    2. Padarath K, Deroubaix A, Naicker P, Stoychev S, Kramvis A. Comparative Proteomic Analysis of Huh7 Cells Transfected with Sub-Saharan African Hepatitis B Virus (Sub)genotypes Reveals Potential Oncogenic Factors. Viruses. 2024 Jun 29; 16(7). PMID: 39066215; PMCID: PMC11281506.
      Citations:    Fields:    Translation:HumansCells
    3. Anderson M, Phinius BB, Phakedi BK, Mudanga M, Bhebhe LN, Tlhabano GN, Motshosi P, Ratsoma T, Baruti K, Mpebe G, Choga WT, Marlink R, Glebe D, Blackard JT, Moyo S, Kramvis A, Gaseitsiwe S. Persistence and risk factors of occult hepatitis B virus infections among antiretroviral therapy-na?ve people living with HIV in Botswana. Front Microbiol. 2024; 15:1342862. PMID: 38784816; PMCID: PMC11112038.
      Citations:    
    4. HBV2023, Allweiss L, Cohen C, Dias J, Fumagalli V, Guo H, Harris JM, Hu J, Iannacone M, Isogawa M, Jeng WJ, Kim KH, Kramvis A, Li W, Lucifora J, Muramatsu M, Neuveut C, Ploss A, Pollicino T, Protzer U, Tan A, Tanaka Y, Tu T, Tsukuda S, Thimme R, Urban S, Watashi K, Yuan Z, Yeh SH, McKeating JA, Revill PA. Highlights from the 2023 International Meeting on the Molecular Biology of Hepatitis B virus. J Gen Virol. 2024 05; 105(5). PMID: 38757942; PMCID: PMC11258880.
      Citations:    Fields:    Translation:HumansCells
    5. Kramvis A, Lau DTY. Navigating TREAT-B in resource-limited settings. Lancet Glob Health. 2024 Jan; 12(1):e8-e9. PMID: 38097301.
      Citations:    Fields:    Translation:Humans
    6. Mammas IN, Drysdale SB, Charalampous C, Koletsi P, Papatheodoropoulou A, Koutsaftiki C, Sergentanis T, Merakou K, Kornarou H, Papaioannou G, Kramvis A, Greenough A, Theodoridou M, Spandidos DA. Navigating paediatric virology through the COVID-19 era (Review). Int J Mol Med. 2023 Sep; 52(3). PMID: 37503745; PMCID: PMC10555476.
      Citations: 1     Fields:    Translation:HumansCells
    7. Kramvis A, Mammas IN, Spandidos DA. Exploring the optimal vaccination strategy against hepatitis B virus in childhood (Review). Biomed Rep. 2023 Jul; 19(1):48. PMID: 37383679; PMCID: PMC10293880.
      Citations: 3     
    8. Makan N, Song E, Kramvis A. Knowledge, attitudes and practices of undergraduate health sciences students on hepatitis B vaccination at a South African university highlight the need for improvement of policies, implementation and co-ordination. S Afr Med J. 2023 05 05; 113(5):39-45. PMID: 37170608.
      Citations:    Fields:    Translation:HumansCellsPHPublic Health
    9. Zhou J, Jiang S, Zhou T, Chen Z, Jin X, Zhang W, Rerks-Ngarm S, Kramvis A, Deng K, Zhang L. Editorial: AIDS 40th Year. Front Microbiol. 2023; 14:1184684. PMID: 37065161; PMCID: PMC10102659.
      Citations: 1     
    10. Padarath K, Deroubaix A, Kramvis A. The Complex Role of HBeAg and Its Precursors in the Pathway to Hepatocellular Carcinoma. Viruses. 2023 03 27; 15(4). PMID: 37112837; PMCID: PMC10144019.
      Citations: 2     Fields:    Translation:HumansCells
    11. Makan N, Song E, Kinge CW, Kramvis A. Hepatitis B virus immunity prior to and after administration of a 'booster' dose of vaccine among health-care students at a South African university. Vaccine X. 2023 Aug; 14:100284. PMID: 37063305; PMCID: PMC10090248.
      Citations: 1     
    12. Zitha T, Chen CY, Mudawi H, Hussein W, Mukhtar M, Shigidi M, Yousif MEA, Ali MA, Glebe D, Kramvis A. Molecular characterization and genotyping of hepatitis C virus from Sudanese end-stage renal disease patients on haemodialysis. BMC Infect Dis. 2022 Nov 14; 22(1):848. PMID: 36376846; PMCID: PMC9661773.
      Citations: 1     Fields:    Translation:HumansCells
    13. Maepa MB, Ely A, Kramvis A, Bloom K, Naidoo K, Simani OE, Maponga TG, Arbuthnot P. Hepatitis B Virus Research in South Africa. Viruses. 2022 08 31; 14(9). PMID: 36146747; PMCID: PMC9503375.
      Citations: 9     Fields:    Translation:HumansCells
    14. Kramvis A, P?rez-Gracia MT, Lole KS, Rodriguez-Iglesias M, Shalimar N. Editorial: Translational research in hepatitis E, Vol II. Front Microbiol. 2022; 13:1011779. PMID: 36090092; PMCID: PMC9450804.
      Citations: 1     
    15. Deroubaix A, Kramvis A. Imaging Techniques: Essential Tools for the Study of SARS-CoV-2 Infection. Front Cell Infect Microbiol. 2022; 12:794264. PMID: 35937687; PMCID: PMC9355083.
      Citations: 2     Fields:    Translation:HumansCellsPHPublic Health
    16. Kramvis A, Chang KM, Dandri M, Farci P, Glebe D, Hu J, Janssen HLA, Lau DTY, Penicaud C, Pollicino T, Testoni B, Van B?mmel F, Andrisani O, Beumont-Mauviel M, Block TM, Chan HLY, Cloherty GA, Delaney WE, Geretti AM, Gehring A, Jackson K, Lenz O, Maini MK, Miller V, Protzer U, Yang JC, Yuen MF, Zoulim F, Revill PA. A roadmap for serum biomarkers for hepatitis B virus: current status and future outlook. Nat Rev Gastroenterol Hepatol. 2022 11; 19(11):727-745. PMID: 35859026; PMCID: PMC9298709.
      Citations: 30     Fields:    Translation:HumansCells
    17. Spearman CW, Dusheiko G, Jonas E, Abdo A, Afihene M, Cunha L, Desalegn H, Kassianides C, Katsidzira L, Kramvis A, Lam P, Lesi OA, Micah EA, Musabeyezu E, Ndow G, Nnabuchi CV, Ocama P, Okeke E, Rwegasha J, Shewaye AB, Some FF, Tzeuton C, Sonderup MW, Gastroenterology and Hepatology Association of sub-Saharan Africa (GHASSA). Hepatocellular carcinoma: measures to improve the outlook in sub-Saharan Africa. Lancet Gastroenterol Hepatol. 2022 11; 7(11):1036-1048. PMID: 35810766.
      Citations: 3     Fields:    Translation:Humans
    18. Mammas IN, Liston M, Koletsi P, Vitoratou DI, Koutsaftiki C, Papatheodoropoulou A, Kornarou H, Theodoridou M, Kramvis A, Drysdale SB, Spandidos DA. Insights in paediatric virology during the COVID-19 era (Review). Med Int (Lond). 2022 May-Jun; 2(3):17. PMID: 36698505; PMCID: PMC9829203.
      Citations: 1     
    19. Sartorius K, Antwi SO, Chuturgoon A, Roberts LR, Kramvis A. RNA Therapeutic Options to Manage Aberrant Signaling Pathways in Hepatocellular Carcinoma: Dream or Reality? Front Oncol. 2022; 12:891812. PMID: 35600358; PMCID: PMC9115561.
      Citations: 3     
    20. Chen CY, Hajinicolaou C, Walabh P, Ingasia LAO, Song E, Kramvis A. Molecular characterization of hepatitis B virus (HBV) isolated from a pediatric case of acute lymphoid leukemia, with a delayed response to antiviral treatment: a case report. BMC Pediatr. 2022 03 31; 22(1):168. PMID: 35361141; PMCID: PMC8969373.
      Citations:    Fields:    Translation:HumansCells
    21. Ingasia LAO, Wose Kinge C, Kramvis A. Genotype E: The neglected genotype of hepatitis B virus. World J Hepatol. 2021 Dec 27; 13(12):1875-1891. PMID: 35069995; PMCID: PMC8727212.
      Citations: 8     
    22. Limani SW, Mnyandu N, Ely A, Wadee R, Kramvis A, Arbuthnot P, Maepa MB. In Vivo Modelling of Hepatitis B Virus Subgenotype A1 Replication Using Adeno-Associated Viral Vectors. Viruses. 2021 11 09; 13(11). PMID: 34835053; PMCID: PMC8618177.
      Citations: 1     Fields:    Translation:HumansAnimalsCells
    23. Sartorius K, An P, Winkler C, Chuturgoon A, Li X, Makarova J, Kramvis A. The Epigenetic Modulation of Cancer and Immune Pathways in Hepatitis B Virus-Associated Hepatocellular Carcinoma: The Influence of HBx and miRNA Dysregulation. Front Immunol. 2021; 12:661204. PMID: 33995383; PMCID: PMC8117219.
      Citations: 20     Fields:    Translation:HumansCells
    24. Deroubaix A, Kramvis A. In vitro expression of precore proteins of hepatitis B virus subgenotype A1 is affected by HBcAg, and can affect HBsAg secretion. Sci Rep. 2021 04 14; 11(1):8167. PMID: 33854155; PMCID: PMC8046783.
      Citations: 5     Fields:    Translation:HumansCells
    25. Ingasia LAO, Kostaki EG, Paraskevis D, Kramvis A. Global and regional dispersal patterns of hepatitis B virus genotype E from and in Africa: A full-genome molecular analysis. PLoS One. 2020; 15(10):e0240375. PMID: 33031453; PMCID: PMC7544117.
      Citations: 13     Fields:    Translation:HumansCells
    26. Sartorius K, Swadling L, An P, Makarova J, Winkler C, Chuturgoon A, Kramvis A. The Multiple Roles of Hepatitis B Virus X Protein (HBx) Dysregulated MicroRNA in Hepatitis B Virus-Associated Hepatocellular Carcinoma (HBV-HCC) and Immune Pathways. Viruses. 2020 07 10; 12(7). PMID: 32664401; PMCID: PMC7412373.
      Citations: 19     Fields:    Translation:HumansCells
    27. Mak D, Kramvis A. Molecular characterization of hepatitis B virus isolated from Black South African cancer patients, with and without hepatocellular carcinoma. Arch Virol. 2020 Aug; 165(8):1815-1825. PMID: 32504396.
      Citations: 4     Fields:    Translation:HumansCells
    28. Kramvis A. Challenges for hepatitis B virus cure in resource-limited settings in sub-Saharan Africa. Curr Opin HIV AIDS. 2020 05; 15(3):185-192. PMID: 32141888.
      Citations: 8     Fields:    Translation:HumansCellsPHPublic Health
    29. Wose Kinge CN, Bhoola NH, Kramvis A. In Vitro Systems for Studying Different Genotypes/Sub-Genotypes of Hepatitis B Virus: Strengths and Limitations. Viruses. 2020 03 23; 12(3). PMID: 32210021; PMCID: PMC7150782.
      Citations: 11     Fields:    Translation:HumansCells
    30. Gerlich WH, Glebe D, Kramvis A, Magnius LO. Peculiarities in the designations of hepatitis B virus genes, their products, and their antigenic specificities: a potential source of misunderstandings. Virus Genes. 2020 Apr; 56(2):109-119. PMID: 32026198; PMCID: PMC7093336.
      Citations: 14     Fields:    Translation:HumansCells
    31. Sartorius K, Makarova J, Sartorius B, An P, Winkler C, Chuturgoon A, Kramvis A. The Regulatory Role of MicroRNA in Hepatitis-B Virus-Associated Hepatocellular Carcinoma (HBV-HCC) Pathogenesis. Cells. 2019 11 24; 8(12). PMID: 31771261; PMCID: PMC6953055.
      Citations: 44     Fields:    Translation:HumansCells
    32. Revill PA, Chisari FV, Block JM, Dandri M, Gehring AJ, Guo H, Hu J, Kramvis A, Lampertico P, Janssen HLA, Levrero M, Li W, Liang TJ, Lim SG, Lu F, Penicaud MC, Tavis JE, Thimme R, Members of the ICE-HBV Working Groups, ICE-HBV Stakeholders Group Chairs, ICE-HBV Senior Advisors, Zoulim F. A global scientific strategy to cure hepatitis B. Lancet Gastroenterol Hepatol. 2019 07; 4(7):545-558. PMID: 30981686; PMCID: PMC6732795.
      Citations: 208     Fields:    Translation:HumansAnimalsCellsPHPublic Health
    33. Singh L, Bell TG, Yousif M, Kramvis A. Response of hepatitis B virus to antiretroviral treatment containing lamivudine in HBsAg-positive and HBsAg-negative HIV-positive South African adults. J Med Virol. 2019 05; 91(5):758-764. PMID: 30515847.
      Citations: 2     Fields:    Translation:HumansCells
    34. Kramvis A, Kostaki EG, Hatzakis A, Paraskevis D. Immunomodulatory Function of HBeAg Related to Short-Sighted Evolution, Transmissibility, and Clinical Manifestation of Hepatitis B Virus. Front Microbiol. 2018; 9:2521. PMID: 30405578; PMCID: PMC6207641.
      Citations: 44     
    35. Anderson M, Choga WT, Moyo S, Bell TG, Mbangiwa T, Phinius BB, Bhebhe L, Sebunya TK, Lockman S, Marlink R, Kramvis A, Essex M, Musonda RM, Blackard JT, Gaseitsiwe S. Molecular Characterization of Near Full-Length Genomes of Hepatitis B Virus Isolated from Predominantly HIV Infected Individuals in Botswana. Genes (Basel). 2018 Sep 07; 9(9). PMID: 30205537; PMCID: PMC6162474.
      Citations: 11     Fields:    
    36. Lazarus JV, Block T, Bréchot C, Kramvis A, Miller V, Ninburg M, Pénicaud C, Protzer U, Razavi H, Thomas LA, Wallace J, Cowie BC. The hepatitis B epidemic and the urgent need for cure preparedness. Nat Rev Gastroenterol Hepatol. 2018 09; 15(9):517-518. PMID: 30050162.
      Citations: 9     Fields:    Translation:HumansPHPublic Health
    37. Anderson M, Choga WT, Moyo S, Bell TG, Mbangiwa T, Phinius BB, Bhebhe L, Sebunya TK, Makhema J, Marlink R, Kramvis A, Essex M, Musonda RM, Blackard JT, Gaseitsiwe S. In Silico Analysis of Hepatitis B Virus Occult Associated Mutations in Botswana Using a Novel Algorithm. Genes (Basel). 2018 Aug 21; 9(9). PMID: 30134551; PMCID: PMC6162659.
      Citations: 7     Fields:    
    38. Kramvis A. Molecular characteristics and clinical relevance of African genotypes and subgenotypes of hepatitis B virus. S Afr Med J. 2018 Aug 08; 108(8b):17-21. PMID: 30182908.
      Citations: 25     Fields:    Translation:HumansCells
    39. Kostaki EG, Karamitros T, Stefanou G, Mamais I, Angelis K, Hatzakis A, Kramvis A, Paraskevis D. Unravelling the history of hepatitis B virus genotypes A and D infection using a full-genome phylogenetic and phylogeographic approach. Elife. 2018 08 07; 7. PMID: 30082021; PMCID: PMC6118819.
      Citations: 15     Fields:    Translation:HumansCells
    40. Mak D, Sengayi M, Chen WC, Babb de Villiers C, Singh E, Kramvis A. Liver cancer mortality trends in South Africa: 1999-2015. BMC Cancer. 2018 Aug 07; 18(1):798. PMID: 30086727; PMCID: PMC6081797.
      Citations: 10     Fields:    Translation:Humans
    41. Mak D, Babb de Villiers C, Chasela C, Urban MI, Kramvis A. Analysis of risk factors associated with hepatocellular carcinoma in black South Africans: 2000-2012. PLoS One. 2018; 13(5):e0196057. PMID: 29718992; PMCID: PMC5931658.
      Citations: 17     Fields:    Translation:Humans
    42. Oyaro M, Wylie J, Chen CY, Ondondo RO, Kramvis A. Human immunodeficiency virus infection predictors and genetic diversity of hepatitis B virus and hepatitis C virus co-infections among drug users in three major Kenyan cities. South Afr J HIV Med. 2018; 19(1):737. PMID: 29707384; PMCID: PMC5913779.
      Citations: 14     
    43. Mammas IN, Greenough A, Theodoridou M, Kramvis A, Rusan M, Melidou A, Korovessi P, Papaioannou G, Papatheodoropoulou A, Koutsaftiki C, Liston M, Sourvinos G, Spandidos DA. Paediatric Virology and its interaction between basic science and clinical practice (Review). Int J Mol Med. 2018 Mar; 41(3):1165-1176. PMID: 29328393; PMCID: PMC5819919.
      Citations: 15     Fields:    Translation:Humans
    44. Sartorius K, Sartorius B, Kramvis A, Singh E, Turchinovich A, Burwinkel B, Madiba T, Winkler CA. Circulating microRNA's as a diagnostic tool for hepatocellular carcinoma in a hyper endemic HIV setting, KwaZulu-Natal, South Africa: a case control study protocol focusing on viral etiology. BMC Cancer. 2017 12 28; 17(1):894. PMID: 29282036; PMCID: PMC5745691.
      Citations: 7     Fields:    Translation:HumansCells
    45. Bhoola NH, Kramvis A. Expression of wild-type or G1862T mutant HBe antigen of subgenotype A1 of hepatitis B virus and the unfolded protein response in Huh7 cells. J Gen Virol. 2017 Jun; 98(6):1422-1433. PMID: 28678685.
      Citations: 9     Fields:    Translation:HumansCells
    46. Grant J, Agbaji O, Kramvis A, Yousif M, Auwal M, Penugonda S, Ugoagwu P, Murphy R, Hawkins C. Hepatitis B virus sequencing and liver fibrosis evaluation in HIV/HBV co-infected Nigerians. Trop Med Int Health. 2017 06; 22(6):744-754. PMID: 28376292; PMCID: PMC5586040.
      Citations: 7     Fields:    Translation:HumansCells
    47. Mammas IN, Theodoridou M, Kramvis A, Thiagarajan P, Gardner S, Papaioannou G, Melidou A, Koutsaki M, Kostagianni G, Achtsidis V, Koutsaftiki C, Calachanis M, Zaravinos A, Greenough A, Spandidos DA. Paediatric Virology: A rapidly increasing educational challenge. Exp Ther Med. 2017 Feb; 13(2):364-377. PMID: 28352303; PMCID: PMC5348700.
      Citations: 21     
    48. Bell TG, Yousif M, Kramvis A. Bioinformatic curation and alignment of genotyped hepatitis B virus (HBV) sequence data from the GenBank public database. Springerplus. 2016; 5(1):1896. PMID: 27843753; PMCID: PMC5084120.
      Citations: 16     
    49. Li KW, Kramvis A, Liang S, He X, Chen QY, Wang C, Yang QL, Hu LP, Jia HH, Fang ZL. Higher prevalence of cancer related mutations 1762T/1764A and PreS deletions in hepatitis B virus (HBV) isolated from HBV/HIV co-infected compared to HBV-mono-infected Chinese adults. Virus Res. 2017 01 02; 227:88-95. PMID: 27720823.
      Citations: 7     Fields:    Translation:HumansCells
    50. Bhoola NH, Kramvis A. Hepatitis B e Antigen Expression by Hepatitis B Virus Subgenotype A1 Relative to Subgenotypes A2 and D3 in Cultured Hepatocellular Carcinoma (Huh7) Cells. Intervirology. 2016; 59(1):48-59. PMID: 27553619.
      Citations: 9     Fields:    Translation:HumansCells
    51. Kramvis A. The clinical implications of hepatitis B virus genotypes and HBeAg in pediatrics. Rev Med Virol. 2016 07; 26(4):285-303. PMID: 27139263; PMCID: PMC5084815.
      Citations: 35     Fields:    Translation:HumansCells
    52. Mammas IN, Greenough A, Theodoridou M, Kramvis A, Christaki I, Koutsaftiki C, Koutsaki M, Portaliou DM, Kostagianni G, Panagopoulou P, Sourvinos G, Spandidos DA. Current views and advances on Paediatric Virology: An update for paediatric trainees. Exp Ther Med. 2016 Jan; 11(1):6-14. PMID: 26889211; PMCID: PMC4726865.
      Citations: 22     
    53. Bell TG, Kramvis A. Bioinformatics tools for small genomes, such as hepatitis B virus. Viruses. 2015 Feb 16; 7(2):781-97. PMID: 25690798; PMCID: PMC4353916.
      Citations: 14     Fields:    Translation:HumansCells
    54. Mudawi H, Hussein W, Mukhtar M, Yousif M, Nemeri O, Glebe D, Kramvis A. Overt and occult hepatitis B virus infection in adult Sudanese HIV patients. Int J Infect Dis. 2014 Dec; 29:65-70. PMID: 25449238.
      Citations: 23     Fields:    Translation:HumansCells
    55. Yousif M, Mudawi H, Hussein W, Mukhtar M, Nemeri O, Glebe D, Kramvis A. Genotyping and virological characteristics of hepatitis B virus in HIV-infected individuals in Sudan. Int J Infect Dis. 2014 Dec; 29:125-32. PMID: 25449246.
      Citations: 17     Fields:    Translation:HumansCells
    56. Lago BV, Mello FC, Kramvis A, Niel C, Gomes SA. Hepatitis B virus subgenotype A1: evolutionary relationships between Brazilian, African and Asian isolates. PLoS One. 2014; 9(8):e105317. PMID: 25122004; PMCID: PMC4133366.
      Citations: 18     Fields:    Translation:HumansCells
    57. Kramvis A. Genotypes and genetic variability of hepatitis B virus. Intervirology. 2014; 57(3-4):141-50. PMID: 25034481.
      Citations: 194     Fields:    Translation:HumansCells
    58. Yousif M, Bell TG, Mudawi H, Glebe D, Kramvis A. Analysis of ultra-deep pyrosequencing and cloning based sequencing of the basic core promoter/precore/core region of hepatitis B virus using newly developed bioinformatics tools. PLoS One. 2014; 9(4):e95377. PMID: 24740330; PMCID: PMC3989311.
      Citations: 4     Fields:    Translation:HumansCells
    59. Bhoola NH, Reumann K, Kew MC, Will H, Kramvis A. Construction of replication competent plasmids of hepatitis B virus subgenotypes A1, A2 and D3 with authentic endogenous promoters. J Virol Methods. 2014 Jul; 203:54-64. PMID: 24681050.
      Citations: 11     Fields:    Translation:HumansCells
    60. Barros LM, Gomes-Gouvêa MS, Kramvis A, Mendes-Corrêa MC, dos Santos A, Souza LA, Santos MD, Carrilho FJ, de Jesus Domicini A, Pinho JR, de Souza Paiva Ferreira A. High prevalence of hepatitis B virus subgenotypes A1 and D4 in Maranhão state, Northeast Brazil. Infect Genet Evol. 2014 Jun; 24:68-75. PMID: 24642137.
      Citations: 13     Fields:    Translation:HumansCells
    61. Gopalakrishnan D, Keyter M, Shenoy KT, Leena KB, Thayumanavan L, Thomas V, Vinayakumar K, Panackel C, Korah AT, Nair R, Kramvis A. Hepatitis B virus subgenotype A1 predominates in liver disease patients from Kerala, India. World J Gastroenterol. 2013 Dec 28; 19(48):9294-306. PMID: 24409056; PMCID: PMC3882402.
      Citations: 15     Fields:    Translation:HumansCells
    62. Ochwoto M, Chauhan R, Gopalakrishnan D, Chen CY, Ng'ang'a Z, Okoth F, Kioko H, Kimotho J, Kaiguri P, Kramvis A. Genotyping and molecular characterization of hepatitis B virus in liver disease patients in Kenya. Infect Genet Evol. 2013 Dec; 20:103-10. PMID: 23978387.
      Citations: 25     Fields:    Translation:HumansCells
    63. Yousif M, Mudawi H, Bakhiet S, Glebe D, Kramvis A. Molecular characterization of hepatitis B virus in liver disease patients and asymptomatic carriers of the virus in Sudan. BMC Infect Dis. 2013 Jul 18; 13:328. PMID: 23865777; PMCID: PMC3722059.
      Citations: 22     Fields:    Translation:HumansCells
    64. Kramvis A, Paraskevis D. Subgenotype A1 of HBV--tracing human migrations in and out of Africa. Antivir Ther. 2013; 18(3 Pt B):513-21. PMID: 23792935.
      Citations: 25     Fields:    Translation:HumansCells
    65. Dickens C, Kew MC, Purcell RH, Kramvis A. Occult hepatitis B virus infection in chacma baboons, South Africa. Emerg Infect Dis. 2013 Apr; 19(4):598-605. PMID: 23631817; PMCID: PMC3647412.
      Citations: 7     Fields:    Translation:AnimalsCells
    66. Bell TG, Kramvis A. Fragment merger: an online tool to merge overlapping long sequence fragments. Viruses. 2013 Mar 12; 5(3):824-33. PMID: 23482300; PMCID: PMC3705298.
      Citations: 14     Fields:    Translation:Cells
    67. Bell TG, Kramvis A. Mutation Reporter Tool: an online tool to interrogate loci of interest, with its utility demonstrated using hepatitis B virus. Virol J. 2013 Feb 23; 10:62. PMID: 23433201; PMCID: PMC3749809.
      Citations: 11     Fields:    Translation:HumansCells
    68. Bell TG, Makondo E, Martinson NA, Kramvis A. Hepatitis B virus infection in human immunodeficiency virus infected southern African adults: occult or overt--that is the question. PLoS One. 2012; 7(10):e45750. PMID: 23049685; PMCID: PMC3462206.
      Citations: 34     Fields:    Translation:HumansCells
    69. Makondo E, Bell TG, Kramvis A. Genotyping and molecular characterization of hepatitis B virus from human immunodeficiency virus-infected individuals in southern Africa. PLoS One. 2012; 7(9):e46345. PMID: 23029487; PMCID: PMC3460816.
      Citations: 26     Fields:    Translation:HumansCells
    70. Yousif M, Kramvis A. Genotype D of hepatitis B virus and its subgenotypes: An update. Hepatol Res. 2013 Apr; 43(4):355-64. PMID: 22978460.
      Citations: 36     
    71. Burnett RJ, Kramvis A, Dochez C, Meheus A. An update after 16 years of hepatitis B vaccination in South Africa. Vaccine. 2012 Sep 07; 30 Suppl 3:C45-51. PMID: 22939021.
      Citations: 22     Fields:    Translation:HumansPHPublic Health
    72. Firnhaber C, Chen CY, Evans D, Maskew M, Schulz D, Reyneke A, Kramvis A. Prevalence of hepatitis B virus (HBV) co-infection in HBV serologically-negative South African HIV patients and retrospective evaluation of the clinical course of mono- and co-infection. Int J Infect Dis. 2012 Apr; 16(4):e268-72. PMID: 22305987.
      Citations: 15     Fields:    Translation:HumansCells
    73. Kimbi GC, Kew MC, Kramvis A. The effect of the G1888A mutation of subgenotype A1 of hepatitis B virus on the translation of the core protein. Virus Res. 2012 Jan; 163(1):334-40. PMID: 22100339.
      Citations: 7     Fields:    Translation:HumansCells
    74. Vermeulen M, Dickens C, Lelie N, Walker E, Coleman C, Keyter M, Reddy R, Crookes R, Kramvis A. Hepatitis B virus transmission by blood transfusion during 4 years of individual-donation nucleic acid testing in South Africa: estimated and observed window period risk. Transfusion. 2012 Apr; 52(4):880-92. PMID: 21981386.
      Citations: 31     Fields:    Translation:Humans
    75. Skelton M, Kew MC, Kramvis A. Distinct mutant hepatitis B virus genomes, with alterations in all four open reading frames, in a single South African hepatocellular carcinoma patient. Virus Res. 2012 Jan; 163(1):59-65. PMID: 21889961.
      Citations: 3     Fields:    Translation:HumansCells
    76. Gulube Z, Chirara M, Kew M, Tanaka Y, Mizokami M, Kramvis A. Molecular characterization of hepatitis B virus isolates from Zimbabwean blood donors. J Med Virol. 2011 Feb; 83(2):235-44. PMID: 21181917.
      Citations: 7     Fields:    Translation:HumansCells
    77. Kramvis A, Clements CJ. Implementing a birth dose of hepatitis B vaccine for home deliveries in Africa--too soon? Vaccine. 2010 Sep 07; 28(39):6408-10. PMID: 20673825.
      Citations: 7     Fields:    Translation:Humans
    78. Revill P, Yuen L, Walsh R, Perrault M, Locarnini S, Kramvis A. Bioinformatic analysis of the hepadnavirus e-antigen and its precursor identifies remarkable sequence conservation in all orthohepadnaviruses. J Med Virol. 2010 Jan; 82(1):104-15. PMID: 19950245.
      Citations: 21     Fields:    Translation:AnimalsCells
    79. Gous N, Bhimma R, Kew M, Kramvis A. Retrospective characterization of the S open reading frame of HBV isolated from children with membranous nephropathy treated with interferon-alpha2b. Antivir Ther. 2010; 15(1):61-9. PMID: 20167992.
      Citations: 3     Fields:    Translation:HumansCells
    80. Singh J, Dickens C, Pahal V, Kumar R, Chaudhary R, Kramvis A, Kew MC. First report of genotype e of hepatitis B virus in an Indian population. Intervirology. 2009; 52(5):235-8. PMID: 19590227.
      Citations: 8     Fields:    Translation:HumansCells
    81. Kurbanov F, Tanaka Y, Kramvis A, Simmonds P, Mizokami M. When should "I" consider a new hepatitis B virus genotype? J Virol. 2008 Aug; 82(16):8241-2. PMID: 18663008; PMCID: PMC2519592.
      Citations: 20     Fields:    Translation:HumansCells
    82. Chen CY, Crowther C, Kew MC, Kramvis A. A valine to phenylalanine mutation in the precore region of hepatitis B virus causes intracellular retention and impaired secretion of HBe-antigen. Hepatol Res. 2008 Jun; 38(6):580-92. PMID: 18201182.
      Citations: 17     
    83. Kramvis A, Arakawa K, Yu MC, Nogueira R, Stram DO, Kew MC. Relationship of serological subtype, basic core promoter and precore mutations to genotypes/subgenotypes of hepatitis B virus. J Med Virol. 2008 Jan; 80(1):27-46. PMID: 18041043.
      Citations: 72     Fields:    Translation:Cells
    84. Kramvis A, Kew MC. Molecular characterization of subgenotype A1 (subgroup Aa) of hepatitis B virus. Hepatol Res. 2007 Jul; 37(s1):S27-32. PMID: 17627631.
      Citations: 24     
    85. Kramvis A, Kew MC. Epidemiology of hepatitis B virus in Africa, its genotypes and clinical associations of genotypes. Hepatol Res. 2007 Jul; 37(s1):S9-S19. PMID: 17627641.
      Citations: 133     
    86. Sugiyama M, Tanaka Y, Kato T, Orito E, Ito K, Acharya SK, Gish RG, Kramvis A, Shimada T, Izumi N, Kaito M, Miyakawa Y, Mizokami M. Influence of hepatitis B virus genotypes on the intra- and extracellular expression of viral DNA and antigens. Hepatology. 2006 Oct; 44(4):915-24. PMID: 17006908.
      Citations: 105     Fields:    Translation:HumansAnimalsCells
    87. Meuleman P, Libbrecht L, Wieland S, De Vos R, Habib N, Kramvis A, Roskams T, Leroux-Roels G. Immune suppression uncovers endogenous cytopathic effects of the hepatitis B virus. J Virol. 2006 Mar; 80(6):2797-807. PMID: 16501088; PMCID: PMC1395427.
      Citations: 23     Fields:    Translation:HumansAnimalsCells
    88. Tanaka Y, Kurbanov F, Mano S, Orito E, Vargas V, Esteban JI, Yuen MF, Lai CL, Kramvis A, Kew MC, Smuts HE, Netesov SV, Alter HJ, Mizokami M. Molecular tracing of the global hepatitis C virus epidemic predicts regional patterns of hepatocellular carcinoma mortality. Gastroenterology. 2006 Mar; 130(3):703-14. PMID: 16530512.
      Citations: 27     Fields:    Translation:HumansCells
    89. Kimbi GC, Kramvis A, Kew MC. Integration of hepatitis B virus DNA into chromosomal DNA during acute hepatitis B. World J Gastroenterol. 2005 Nov 07; 11(41):6416-21. PMID: 16425409; PMCID: PMC4355779.
      Citations: 17     Fields:    Translation:HumansCells
    90. Kramvis A, Restorp K, Norder H, Botha JF, Magnius LO, Kew MC. Full genome analysis of hepatitis B virus genotype E strains from South-Western Africa and Madagascar reveals low genetic variability. J Med Virol. 2005 Sep; 77(1):47-52. PMID: 16032729.
      Citations: 25     Fields:    Translation:HumansCells
    91. Kramvis A, Kew MC. Relationship of genotypes of hepatitis B virus to mutations, disease progression and response to antiviral therapy. J Viral Hepat. 2005 Sep; 12(5):456-64. PMID: 16108759.
      Citations: 71     Fields:    Translation:HumansCells
    92. Kew MC, Kramvis A, Yu MC, Arakawa K, Hodkinson J. Increased hepatocarcinogenic potential of hepatitis B virus genotype A in Bantu-speaking sub-saharan Africans. J Med Virol. 2005 Apr; 75(4):513-21. PMID: 15714494.
      Citations: 50     Fields:    Translation:HumansCells
    93. Kramvis A, Kew M, François G. Hepatitis B virus genotypes. Vaccine. 2005 Mar 31; 23(19):2409-23. PMID: 15752827.
      Citations: 135     Fields:    Translation:HumansAnimalsCells
    94. Tanaka Y, Hasegawa I, Kato T, Orito E, Hirashima N, Acharya SK, Gish RG, Kramvis A, Kew MC, Yoshihara N, Shrestha SM, Khan M, Miyakawa Y, Mizokami M. A case-control study for differences among hepatitis B virus infections of genotypes A (subtypes Aa and Ae) and D. Hepatology. 2004 Sep; 40(3):747-55. PMID: 15349915.
      Citations: 39     Fields:    Translation:HumansCells
    95. Hasegawa I, Tanaka Y, Kramvis A, Kato T, Sugauchi F, Acharya SK, Orito E, Ueda R, Kew MC, Mizokami M. Novel hepatitis B virus genotype a subtyping assay that distinguishes subtype Aa from Ae and its application in epidemiological studies. J Virol. 2004 Jul; 78(14):7575-81. PMID: 15220432; PMCID: PMC434120.
      Citations: 5     Fields:    Translation:HumansCells
    96. Kimbi GC, Kramvis A, Kew MC. Distinctive sequence characteristics of subgenotype A1 isolates of hepatitis B virus from South Africa. J Gen Virol. 2004 May; 85(Pt 5):1211-1220. PMID: 15105537.
      Citations: 43     Fields:    Translation:HumansCells
    97. Mangisa NP, Smuts HE, Kramvis A, Linley CW, Skelton M, Tucker TJ, De La M Hall P, Kahn D, Jilbert AR, Kew MC. Molecular characterization of duck hepatitis B virus isolates from South African ducks. Virus Genes. 2004 Mar; 28(2):179-86. PMID: 14976417.
      Citations: 7     Fields:    Translation:AnimalsCells
    98. Ahn SH, Kramvis A, Kawai S, Spangenberg HC, Li J, Kimbi G, Kew M, Wands J, Tong S. Sequence variation upstream of precore translation initiation codon reduces hepatitis B virus e antigen production. Gastroenterology. 2003 Nov; 125(5):1370-8. PMID: 14598253.
      Citations: 27     Fields:    Translation:HumansCells
    99. Kato H, Orito E, Sugauchi F, Ueda R, Koshizaka T, Yanaka S, Gish RG, Kurbanov F, Ruzibakiev R, Kramvis A, Kew MC, Ahmad N, Khan M, Usuda S, Miyakawa Y, Mizokami M. Frequent coinfection with hepatitis B virus strains of distinct genotypes detected by hybridization with type-specific probes immobilized on a solid-phase support. J Virol Methods. 2003 Jun 09; 110(1):29-35. PMID: 12757918.
      Citations: 7     Fields:    Translation:Cells
    100. Baptista M, Kramvis A, Jammeh S, Naicker J, Galpin JS, Kew MC. Follow up of infection of chacma baboons with inoculum containing A and non-A genotypes of hepatitis B virus. World J Gastroenterol. 2003 Apr; 9(4):731-5. PMID: 12679921; PMCID: PMC4611439.
      Citations: 5     Fields:    Translation:AnimalsCells
    101. Bhimma R, Coovadia M, Hammond MG, Kramvis A, Adhikari M, Kew MC. HLA associations with HBV carriage and proteinuria. Pediatr Nephrol. 2002 Sep; 17(9):724-9. PMID: 12215825.
      Citations: 1     Fields:    Translation:Humans
    102. Sithebe NP, Kramvis A, Kew MC, Bhimma R, Coovadia HM, Naidoo P. Hepatitis B and C virus co-infection in black children with membranous nephropathy. Pediatr Nephrol. 2002 Aug; 17(8):689-94. PMID: 12185483.
      Citations: 1     Fields:    Translation:Humans
    103. Bhimma R, Coovadia HM, Kramvis A, Adhikari M, Kew MC. Treatment of hepatitis B virus-associated nephropathy in black children. Pediatr Nephrol. 2002 Jun; 17(6):393-9. PMID: 12107801.
      Citations: 8     Fields:    Translation:HumansCells
    104. Sithebe NP, Kew MC, Mphahlele MJ, Paterson AC, Lecatsas G, Kramvis A, de Klerk W. Lack of susceptibility of Chacma baboons (Papio ursinus orientalis) to hepatitis C virus infection. J Med Virol. 2002 Apr; 66(4):468-71. PMID: 11857523.
      Citations: 7     Fields:    Translation:HumansAnimalsCells
    105. Kramvis A, Weitzmann L, Owiredu WKBA, Kew MC. Analysis of the complete genome of subgroup A' hepatitis B virus isolates from South Africa. J Gen Virol. 2002 Apr; 83(Pt 4):835-839. PMID: 11907333.
      Citations: 19     Fields:    Translation:Cells
    106. Owiredu WK, Kramvis A, Kew MC. Molecular analysis of hepatitis B virus genomes isolated from black African patients with fulminant hepatitis B. J Med Virol. 2001 Nov; 65(3):485-92. PMID: 11596083.
      Citations: 9     Fields:    Translation:HumansCells
    107. Owiredu WK, Kramvis A, Kew MC. Hepatitis B virus DNA in serum of healthy black African adults positive for hepatitis B surface antibody alone: possible association with recombination between genotypes A and D. J Med Virol. 2001 Aug; 64(4):441-54. PMID: 11468728.
      Citations: 15     Fields:    Translation:HumansCells
    108. Bhimma R, Coovadia HM, Ramjee G, Kramvis A, Adhikari M, Kew MC, Connolly CA. Characterization of proteinuria in asymptomatic family members and household contacts of children with hepatitis B virus-associated membranous nephropathy. Am J Kidney Dis. 2001 Jan; 37(1):125-133. PMID: 11136177.
      Citations: 2     Fields:    Translation:HumansPHPublic HealthCTClinical Trials
    109. Kedda MA, Kramvis A, Kew MC, Lecatsas G, Paterson AC, Aspinall S, Stark JH, De Klerk WA, Gridelli B. Susceptibility of chacma baboons (Papio ursinus orientalis) to infection by hepatitis B virus. Transplantation. 2000 Apr 15; 69(7):1429-34. PMID: 10798766.
      Citations: 6     Fields:    Translation:AnimalsCells
    110. Kramvis A, Kew MC. The core promoter of hepatitis B virus. J Viral Hepat. 1999 Nov; 6(6):415-27. PMID: 10607259.
      Citations: 51     Fields:    Translation:Cells
    111. Bhimma R, Coovadia HM, Kramvis A, Adhikari M, Kew MC, Connolly CA. HBV and proteinuria in relatives and contacts of children with hepatitis B virus-associated membranous nephropathy. Kidney Int. 1999 Jun; 55(6):2440-9. PMID: 10354293.
      Citations: 2     Fields:    Translation:HumansCellsPHPublic Health
    112. Baptista M, Kramvis A, Kew MC. High prevalence of 1762(T) 1764(A) mutations in the basic core promoter of hepatitis B virus isolated from black Africans with hepatocellular carcinoma compared with asymptomatic carriers. Hepatology. 1999 Mar; 29(3):946-53. PMID: 10051502.
      Citations: 69     Fields:    Translation:HumansCells
    113. Kramvis A, Kew MC. Structure and function of the encapsidation signal of hepadnaviridae. J Viral Hepat. 1998 Nov; 5(6):357-67. PMID: 9857345.
      Citations: 22     Fields:    Translation:HumansAnimalsCells
    114. Kramvis A, Kew MC, Bukofzer S. Hepatitis B virus precore mutants in serum and liver of Southern African Blacks with hepatocellular carcinoma. J Hepatol. 1998 Jan; 28(1):132-41. PMID: 9537850.
      Citations: 17     Fields:    Translation:HumansCells
    115. Kramvis A, Bukofzer S, Kew MC, Song E. Nucleic acid sequence analysis of the precore region of hepatitis B virus from sera of southern African black adult carriers of the virus. Hepatology. 1997 Jan; 25(1):235-40. PMID: 8985297.
      Citations: 10     Fields:    Translation:HumansCells
    116. Kramvis A, Bukofzer S, Kew MC. Comparison of hepatitis B virus DNA extractions from serum by the QIAamp blood kit, GeneReleaser, and the phenol-chloroform method. J Clin Microbiol. 1996 Nov; 34(11):2731-3. PMID: 8897174; PMCID: PMC229395.
      Citations: 34     Fields:    Translation:HumansCells
    117. Kramvis A, Garnett HM. Proliferative activity of vervet monkey bone marrow-derived adherent cells. Exp Hematol. 1987 Nov; 15(10):1022-7. PMID: 3666073.
      Citations:    Fields:    Translation:AnimalsCells
    118. Kramvis A, Garnett HM. Infection of vervet monkey bone marrow stromal cells with simian cytomegalovirus. J Infect Dis. 1987 Oct; 156(4):645-8. PMID: 3040871.
      Citations: 1     Fields:    Translation:HumansAnimalsCells
    119. Kramvis A, Garnett HM. Growth and morphological characteristics of vervet monkey bone marrow-derived adherent cells. Int J Cell Cloning. 1984 Sep; 2(5):304-15. PMID: 6491392.
      Citations:    Fields:    Translation:AnimalsCells
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