Clinical and immunopathological consequences of chronic HBV and Plasmodium falciparum
co-infections.
Acronym
HEPMAL
Duration
48 months
EDTCP Grant ID
TMA2018SF-2456
Sponsor Name & Address
The European & Developing Countries Clinical Trials Partnership (EDTCP), PO Box 93015, 2509 AA
The
Hague, The Netherlands.
Coordinating Institution
University of Ghana, Legon, Accra.
NMIMR STC number & approval date
2(2) 2019-20 (Date: 13th December 2019)
NMIMR IRB approval number
046/19-20 (8th January 2020) Renewed 6th November 2020 and 3rd November 2021
KBTH STC approval number
KBTH-STC 000024/2020 (Date: 9th April 2020)
KBTH IRB approval number
KBTH-IRB 00024/2020 (Date: 27th May 2020) Renewed 9th June 2021 and 30th April 2022
THE PROJECT
Introduction
Malaria and viral hepatitis due to Hepatitis B virus (HBV) are two very common infectious diseases
prevalent
in sub-Saharan Africa and together account for significant morbidity and mortality.
In Ghana, half a million more cases of malaria were recorded in 2019, representing an 8% increase over
the
previous year (WMR 2019). Globally, Ghana and 10 other countries account for 70% of the global estimated
case
burden, as well as 71%
of estimated deaths (WMR 2019)
Similarly, 2015 figures indicate that 257 million people worldwide live with chronic hepatitis B
infection,
with some 887 000 deaths attributed to the disease (mostly from cirrhosis and hepatocellular carcinoma)
in
the
same year.
The common organ targeted by both Plasmodium and HBV is the liver. Sporozoites from an infectious
mosquito
bite first invade, develop and multiply in liver cells, while HBV also targets the liver and causes a
prolonged infection that may
result in liver cancer or cirrhosis.
Inevitably, there are instances where the causative organisms of these diseases co-infect individuals
in
the
general population. Differences in immune responses to these pathogens means that chronic HBV infections
can
affect liver stage
malaria-specific T cell responses, while Plasmodium infection could also contribute to liver pathology
in
chronic HBV-infected subjects. The effect of these interactions are especially important in the future
context
of administering an
approved malaria vaccine in HBV-endemic populations of sub-Saharan Africa, as routine administration of
vaccines to chronic HBV-infected persons may not yield the expected immunization outcomes.
The overall goal of the proposed study is therefore to investigate and define the by-stander effects of
an
on-going chronic HBV infection on immune responses to Plasmodium liver stage infection. We will also
assess
whether a Plasmodium
liver stage infection affects chronic HBV infection outcome in co-infected individuals.
We hope to establish baseline data on the immunological and clinical outcomes of Plasmodium/chronic HBV
co-infections, leading to improved HBV monitoring, management and education.
Our specific aims are therefore to:
1. Determine the effect of chronic HBV infection on the outcome of Plasmodium liver stage infection.
2. Determine the cytokine expression profiles of white cells from chronic HBV patients with and
without
Plasmodium infection over a one-year period.
3. Define the effect of liver stage Plasmodium infection on liver pathology in chronic HBV infected
individuals.
Participating Institutions:
Noguchi Memorial Institute for Medical Research (NMIMR), University of Ghana.
Gastroenterology Unit, Korle Bu Teaching Hospital.
University of Ghana Hospital.
RESEARCH TEAM
Dr. Kwadwo Asamoah Kusi
Principal Investigator.
Department of Immunology, NMIMR, UG, Legon.
Dr. Kwadwo Asamoah Kusi
Principal Investigator for the HEPMAL project
Dr Kwadwo Asamoah Kusi is the Principal Investigator for the HEPMAL
project.
After his PhD at
Leiden
University in the Netherlands he has, over the years,
conducted both field and laboratory based research and authored/co-authored a significant
number
of
peer-reviewed publications in his subject area.
Dr Kusi has a record of training students at the masters, PhD and post-doctoral levels, and
the
HEPMAL project
offers an opportunity to continue this with the students and post-doctoral candidate enrolled
on
the
project.
Dr. Kofi Bonney
Co-Investigator.
Department of Virology, NMIMR, UG, Legon.
Dr. Kofi Bonney
Co-Investigator for the HEPMAL project
Dr. Kofi Bonney is a virologist with over fifteen years involvement in the conduct of
biomedical
research and laboratory diagnosis of viral pathogens of public health importance. He had a
sandwich
PhD program with the Bernhard Nocht Institute for Tropical Medicine in Hamburg, Germany and
the
Department of Microbiology, University of Ghana Medical School. He is currently a Senior
Research
Fellow with the Virology Department of NMIMR and is a PhD student supervisor on this project.
Dr. Linda Amoah
Co-Investigator.
Department of Immunology, NMIMR, UG, Legon.
Dr. Linda Amoah
Co-Investigator for the HEPMAL project
Dr. Linda Amoah is a molecular biologist with malaria biology background
in
the
Immunology
Department of NMIMR. She has a PhD from Georgetown University in the US and has over fifteen
years
of experience in molecular biology and recombinant DNA technology. Dr Amoah is responsible for
some
molecular aspects of the project and will co-supervise one of the PhD students.
Dr. Taiba J. Afaa
Department of Child Health
Korle Bu Teaching Hospital, Accra.
Dr. Taiba J. Afaa
Co-Investigator for the HEPMAL project
Dr. Taiba Jibril Afaa is also a gastroenterologist working at the Korle Bu
Teaching Hospital and a lecturer with the University of Ghana Medical School.
Dr. Kenneth Tachi
Gastoenterology Unit, Medical Sub-BMC.
Korle Bu Teaching Hospital, Accra.
Dr. William van der Puije
Post Doctoral Fellow
Department of Immunology, NMIMR, UG, Legon.
Selorm Philip Segbefia
PhD Student
Department of Molecular Medicine, School of Medicine and Dentistry,
College of Health Kwame Nkrumah University of Science and Technology, Kumasi.
Diana Asema Asandem
PhD student.
West African Centre for Cell Biology of Infectious Pathogens (WACCBIP),
Department of Biochemistry, Cell and Moecular Biology (BCMB), University of Ghana, Legon.
Bright Asare
MPhil student
Department of Animal Biology and Conservation Science (DABCS), College of
Basic
and Applied Sciences, UG, Legon.
Rawdat Baba-Adam
MPhil student
West African Centre for Cell Biology of Infectious Pathogens (WACCBIP),
Department of Biochemistry, Cell and Molecular Biology (BCMB), UG, Legon.
The project has also recruited study nurses, field/laboratory personnel and data
entry personnel with the appropriate background and expertise for study implementation.
WORK PLAN
Project Updates:
• June 2020 - Ethical clearance obtained from the NMIMR Legon and Korle Bu Teaching Hospital
Ethical/Institutional Review Boards
• July 2020 - Project initialization Zoom meeting for HEPMAL held
• September 2020 - Students, 2 at the PhD and 2 at Masters levels, as well as research and field
assistants successfully enrolled on the project
• September 2020 - Visit to Korle Bu by the Noguchi HEPMAL team for preparatory work and
familiarization
• September 2020 - Hepatitis B vaccinations of project staff administered
• October 2020 - Successful recruitment of first volunteers
• Laboratory trials of various assays underway
• Procurement of some consumables and supplies done, others on-going
• March 2021: Month 6 progress
meeting
held. Theme: Hepatitis B, Malaria and the Liver Battleground
• July 2021: HEPMAL-organized World Hepatitis Day
2021
event held, with free screening and vaccinations. Hep Can’t Wait!
• August 2021: Donation of items to Liver Clinic, Korle Bu
• September 2021: Successful exit of first volunteer after 1 year follow up period