Increased recurrence rates of hepatocellular carcinoma after DAA therapy in a hepatitis C‐infected Egyptian cohort: A comparative analysis |
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| Authors: | M. El Kassas A. L. Funk M. Salaheldin Y. Shimakawa M. Eltabbakh K. Jean A. El Tahan A. T. Sweedy S. Afify N. F. Youssef G. Esmat A. Fontanet |
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| Affiliation: | 1. Endemic Medicine Department, Faculty of Medicine, Helwan University, Cairo, Egypt;2. Emerging Disease Epidemiology Unit, Institut Pasteur, Paris, France;3. Tropical Medicine Department, Faculty of Medicine, Ain Shams University, Cairo, Egypt;4. Laboratoire MESuRS (EA 4628), Conservatoire National Des Arts et Métiers, Paris, France;5. Unité PACRI, Institut Pasteur, Conservatoire National des Arts et Métiers, Paris, France;6. New Cairo Viral Hepatitis Treatment Unit, Cairo, Egypt;7. National Hepatology and Tropical Medicine Research Institute, Cairo, Egypt;8. Medical Surgical Nursing Department, Faculty of Nursing, Cairo University, Cairo, Egypt;9. Endemic Medicine and Hepato‐Gastroenterology Department, Faculty of Medicine, Cairo University, Cairo, Egypt |
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| Abstract: | In Egypt, hepatocellular carcinoma (HCC) is the most common form of cancer and direct‐acting antivirals (DAA) are administered on a large scale to patients with chronic HCV infection to reduce the risk. In this unique setting, we aimed to determine the association of DAA exposure with early‐phase HCC recurrence in patients with a history of HCV‐related liver cancer. This was a prospective cohort study of an HCV‐infected population from one Egyptian specialized HCC management centre starting from the time of successful HCC intervention. The incidence rates of HCC recurrence between DAA‐exposed and nonexposed patients were compared, starting from date of HCC complete radiological response and censoring after 2 years. DAA exposure was treated as time varying. Two Poisson regressions models were used to control for potential differences in the exposed and nonexposed group; multivariable adjustment and balancing using inverse probability of treatment weighting (IPTW). We included 116 patients: 53 treated with DAAs and 63 not treated with DAAs. There was 37.7% and 25.4% recurrence in each group after a median of 16.0 and 23.0 months of follow‐up, respectively. Poisson regression using IPTW demonstrated an association between DAAs and HCC recurrence with an incidence rate ratio of 3.83 (95% CI: 2.02‐7.25), which was similar in the multivariable‐adjusted model and various sensitivity analyses. These results add important evidence towards the possible role of DAAs in HCC recurrence and stress the need for further mechanistic studies and clinical trials to accurately confirm this role and to identify patient characteristics that may be associated with this event. |
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| Keywords: | DAAs Egypt hepatitis c hepatocellular carcinoma recurrence |
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