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KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal

Received: 8 February 2022     Accepted: 1 March 2022     Published: 9 March 2022
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Abstract

Hepatocellular carcinoma (HCC) is a public health problem in developing countries where chronic HBV is endemic. The objective of our study was to determine the prevalence of KRAS and BRAF mutations in patients with HCC. Mutations in codons 12 and 13 of KRAS and the V600E mutation of the BRAF gene were searched by HRM on Light Cycler 480 and confirmed by direct sequencing. A total of 34 HCC patients underwent molecular testing for codon 12 and 13 mutations in the KRAS gene and the V600E mutation in the BRAF gene. Melting curve analysis showed a prevalence of 23.5% (n=8/34) for the KRAS gene and 41.2% (n=14/34) for the BRAF gene. The mean age of BRAF mutation carriers was lower compared with KRAS mutation carriers. Chronic HBV carriage appeared to play a role in the development of these mutations, increasing the risk by 2 (CI(95)=0.55-7.24; p=0.395) for BRAF and by 1.78 (CI(95)=0.23-13.5; p=1) for KRAS. KRAS and BRAF mutations do not appear to play a role in tumor metastasis. However, these results need to be confirmed by further studies with a larger sample size. Alterations in the RAS/RAF/MAP Kinase pathway appear to be more prominent in HBV-induced HCC. This may hinder management with receptor tyrosine kinase inhibitors, the basis for treatment of advanced HCC.

Published in International Journal of Genetics and Genomics (Volume 10, Issue 1)
DOI 10.11648/j.ijgg.20221001.16
Page(s) 37-42
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

KRAS, V600E BRAF, HBV, Hepatocellular Carcinoma, Senegal

References
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    Thiam Souleymane, Dia Fatou Kine Sy Thorpe, Sambiani Damigou Mawuli, Diop Papa Saloum, Ka Ibrahima, et al. (2022). KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal. International Journal of Genetics and Genomics, 10(1), 37-42. https://doi.org/10.11648/j.ijgg.20221001.16

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    ACS Style

    Thiam Souleymane; Dia Fatou Kine Sy Thorpe; Sambiani Damigou Mawuli; Diop Papa Saloum; Ka Ibrahima, et al. KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal. Int. J. Genet. Genomics 2022, 10(1), 37-42. doi: 10.11648/j.ijgg.20221001.16

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    AMA Style

    Thiam Souleymane, Dia Fatou Kine Sy Thorpe, Sambiani Damigou Mawuli, Diop Papa Saloum, Ka Ibrahima, et al. KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal. Int J Genet Genomics. 2022;10(1):37-42. doi: 10.11648/j.ijgg.20221001.16

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  • @article{10.11648/j.ijgg.20221001.16,
      author = {Thiam Souleymane and Dia Fatou Kine Sy Thorpe and Sambiani Damigou Mawuli and Diop Papa Saloum and Ka Ibrahima and Deguenonvo Gabriel Nougnignon Comlan and Ndiaye Yaye Dié and Cisse Fatou and Ndiaye Arame and Samba Abdourahmane and Coly Najah Fatou and Soumah Idrissa Yaya and Diedhiou Fatou and Agossou Hortence Honorine Médécé and Gaye Amy and Ndiaye Tolla and Dial Cherif Mouhame and Ndiaye Daouda and Diallo Fatou},
      title = {KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal},
      journal = {International Journal of Genetics and Genomics},
      volume = {10},
      number = {1},
      pages = {37-42},
      doi = {10.11648/j.ijgg.20221001.16},
      url = {https://doi.org/10.11648/j.ijgg.20221001.16},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijgg.20221001.16},
      abstract = {Hepatocellular carcinoma (HCC) is a public health problem in developing countries where chronic HBV is endemic. The objective of our study was to determine the prevalence of KRAS and BRAF mutations in patients with HCC. Mutations in codons 12 and 13 of KRAS and the V600E mutation of the BRAF gene were searched by HRM on Light Cycler 480 and confirmed by direct sequencing. A total of 34 HCC patients underwent molecular testing for codon 12 and 13 mutations in the KRAS gene and the V600E mutation in the BRAF gene. Melting curve analysis showed a prevalence of 23.5% (n=8/34) for the KRAS gene and 41.2% (n=14/34) for the BRAF gene. The mean age of BRAF mutation carriers was lower compared with KRAS mutation carriers. Chronic HBV carriage appeared to play a role in the development of these mutations, increasing the risk by 2 (CI(95)=0.55-7.24; p=0.395) for BRAF and by 1.78 (CI(95)=0.23-13.5; p=1) for KRAS. KRAS and BRAF mutations do not appear to play a role in tumor metastasis. However, these results need to be confirmed by further studies with a larger sample size. Alterations in the RAS/RAF/MAP Kinase pathway appear to be more prominent in HBV-induced HCC. This may hinder management with receptor tyrosine kinase inhibitors, the basis for treatment of advanced HCC.},
     year = {2022}
    }
    

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  • TY  - JOUR
    T1  - KRAS and BRAF Mutations in Patients with Hepatocellular Carcinoma in Senegal
    AU  - Thiam Souleymane
    AU  - Dia Fatou Kine Sy Thorpe
    AU  - Sambiani Damigou Mawuli
    AU  - Diop Papa Saloum
    AU  - Ka Ibrahima
    AU  - Deguenonvo Gabriel Nougnignon Comlan
    AU  - Ndiaye Yaye Dié
    AU  - Cisse Fatou
    AU  - Ndiaye Arame
    AU  - Samba Abdourahmane
    AU  - Coly Najah Fatou
    AU  - Soumah Idrissa Yaya
    AU  - Diedhiou Fatou
    AU  - Agossou Hortence Honorine Médécé
    AU  - Gaye Amy
    AU  - Ndiaye Tolla
    AU  - Dial Cherif Mouhame
    AU  - Ndiaye Daouda
    AU  - Diallo Fatou
    Y1  - 2022/03/09
    PY  - 2022
    N1  - https://doi.org/10.11648/j.ijgg.20221001.16
    DO  - 10.11648/j.ijgg.20221001.16
    T2  - International Journal of Genetics and Genomics
    JF  - International Journal of Genetics and Genomics
    JO  - International Journal of Genetics and Genomics
    SP  - 37
    EP  - 42
    PB  - Science Publishing Group
    SN  - 2376-7359
    UR  - https://doi.org/10.11648/j.ijgg.20221001.16
    AB  - Hepatocellular carcinoma (HCC) is a public health problem in developing countries where chronic HBV is endemic. The objective of our study was to determine the prevalence of KRAS and BRAF mutations in patients with HCC. Mutations in codons 12 and 13 of KRAS and the V600E mutation of the BRAF gene were searched by HRM on Light Cycler 480 and confirmed by direct sequencing. A total of 34 HCC patients underwent molecular testing for codon 12 and 13 mutations in the KRAS gene and the V600E mutation in the BRAF gene. Melting curve analysis showed a prevalence of 23.5% (n=8/34) for the KRAS gene and 41.2% (n=14/34) for the BRAF gene. The mean age of BRAF mutation carriers was lower compared with KRAS mutation carriers. Chronic HBV carriage appeared to play a role in the development of these mutations, increasing the risk by 2 (CI(95)=0.55-7.24; p=0.395) for BRAF and by 1.78 (CI(95)=0.23-13.5; p=1) for KRAS. KRAS and BRAF mutations do not appear to play a role in tumor metastasis. However, these results need to be confirmed by further studies with a larger sample size. Alterations in the RAS/RAF/MAP Kinase pathway appear to be more prominent in HBV-induced HCC. This may hinder management with receptor tyrosine kinase inhibitors, the basis for treatment of advanced HCC.
    VL  - 10
    IS  - 1
    ER  - 

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Author Information
  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Surgical and Oncology Department, Sylvanus Olympio Hospital, Lome, Togo

  • Surgical Department, General Hospital of Grand Yoff, Dakar, Senegal

  • Surgical Department, General Hospital of Grand Yoff, Dakar, Senegal

  • Cytology and Pathology Department, General Hospital of Grand Yoff, Dakar, Senegal

  • International Centre for Research, Training in Applied Genomics and Health Surveillance, Cheikh Anta Diop University of Dakar, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Pharmaceutical Biochemestry/Department of Medical Biology and Functional Exploration, Faculty of Health, Thies University, Thies, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

  • International Centre for Research, Training in Applied Genomics and Health Surveillance, Cheikh Anta Diop University of Dakar, Dakar, Senegal

  • International Centre for Research, Training in Applied Genomics and Health Surveillance, Cheikh Anta Diop University of Dakar, Dakar, Senegal

  • Cytology and Pathology Department, General Hospital of Grand Yoff, Dakar, Senegal

  • International Centre for Research, Training in Applied Genomics and Health Surveillance, Cheikh Anta Diop University of Dakar, Dakar, Senegal

  • Laboratory of Biochemistry and Molecular Biology, Faculty of Medicine, Cheikh Anta Diop University, Dakar, Senegal

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