Lower risk of multiple sclerosis in patients with chronic hepatitis C: a nationwide population-based registry study.

Lower risk of multiple sclerosis in patients with chronic hepatitis C: a nationwide population-based registry study.

Publication date: May 31, 2019

Multiple sclerosis (MS) is an immune-mediated neurological disease that causes demyelination. The etiology is unknown, but patients with a previous viral infection, such as Epstein-Barr virus, have been shown to be at a higher risk of developing MS. In contrast, people living with HIV have a lower risk of developing MS. Hepatitis C virus (HCV) mainly infects the liver, but patients with HCV can experience several extrahepatic manifestations and studies have shown an association with several autoimmune conditions such as neuropathy and myelitis. The present study aimed to investigate the risk of MS in patients with chronic HCV infection compared with matched comparators.

Patients were identified using the nationwide Swedish inpatient (2001-2013) and outpatient care registers (2001-2013) for HCV (B18.2) and MS (G35) according to the International Classification of Diseases-10. Up to five comparators (matched on age/sex/place of residency) were drawn from the general population for each HCV patient. Follow-up started at the first HCV visit from 2001 and the patients’ accrued person-time until death, emigration or 31 December 2013. Risk of MS diagnosis was calculated as standardized incidence ratio (SIR) with 95% confidence intervals (CIs).

HCV patients were at lower risk of MS diagnosis (SIR 0.37; 95% CI 0.26-0.50). The incidence of MS during the study in the HCV cohort was 0.087% compared with 0.27% in the matched comparator cohort.

Surprisingly, these data suggest HCV patients to have a lower risk of MS diagnosis.

S”oderholm, J., Yilmaz, A., Svenningsson, A., B”usch, K., Wejstal, R., Brolund, A., K”ovamees, J., S”allberg, M., Lagging, M., and Gissl’en, M. Lower risk of multiple sclerosis in patients with chronic hepatitis C: a nationwide population-based registry study. 18175. 2019 J Neurol.

Concepts Keywords
Autoimmune MS Hepatitis
Cohort HIV
Comparator Multiple sclerosis
Confidence Intervals Medical specialties
Demyelination Medicine
Epstein Barr Virus Infectious diseases
Etiology Healthcare-associated infections
G35 Hepatitis
HCV RTT
Hepatitis Viral hepatitis
HIV Hepatitis C
Incidence Hepacivac
Infection
Liver
Multiple Sclerosis
Myelitis
Neurological
Neuropathy
Residency
Swedish
Viral Infection
Virus

Semantics

Type Source Name
gene UNIPROT CISH
disease MESH diagnosis
disease MESH death
gene UNIPROT EVA1C
gene UNIPROT NDUFB7
disease MESH infection
disease DOID myelitis
disease MESH myelitis
disease DOID neuropathy
pathway BSID Hepatitis C
disease MESH Hepatitis C
disease DOID viral infection
disease MESH viral infection
disease MESH demyelination
disease DOID chronic hepatitis C
disease MESH chronic hepatitis C
disease DOID multiple sclerosis
disease MESH multiple sclerosis

Similar

Original Article

Leave a Comment

Your email address will not be published. Required fields are marked *