PubMed · 7041267
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P A Miescher, A Belehu. 1982. Leishmaniasis: hematologic aspects.. https://pubmed.ncbi.nlm.nih.gov/7041267/
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OBJECTIVE: To evaluate the risk for development of antibodies to factor VIII (factor VIII inhibitors) during and after interferon therapy in patients with hemophilia A and chronic hepatitis C infection. DESIGN: Patients were divided into two treatment groups and an untreated control group. Test results from the two treatment groups were compared with those from the control group. SETTING: 3 clinical centers in the Netherlands. PATIENTS: 35 men with hemophilia A who had acquired hepatitis C through the use of plasma-derived clotting factor concentrates. MEASUREMENTS: Patients were tested for factor VIII inhibitors before the start of interferon therapy and every 6 months thereafter. RESULTS: 21 patients with hemophilia A received interferon therapy for chronic hepatitis C infection for a mean of 19.5 months (range, 0.5 to 36 months). In 2 patients, inhibitors were detected on one occasion (maximum titer, 1.2 Bethesda units/mL) during interferon therapy. In 3 patients who were known to have had inhibitors before interferon therapy, no anamnestic reaction was seen during treatment. In 3 of 14 untreated controls who were followed for a mean of 28 months (range, 18 to 40 months), inhibitors were detected on one occasion (maximum titer, 2.3 Bethesda units/mL). CONCLUSION: Long-term interferon therapy in patients with hemophilia did not increase the risk for development of factor VIII inhibitors.
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Human endogenous retroviruses (HERVs) are very likely footprints of ancient germ-cell infections. HERV sequences encompass about 1% of the human genome. HERVs have retained the potential of other retroelements to retrotranspose and thus to change genomic structure and function. The genomes of almost all HERV families are highly defective. Recent progress has allowed the identification of the biologically most active family, HTDV/HERV-K, which codes for viral proteins and particles and is highly expressed in germ-cell tumors. The demonstrable and potential roles of HTDV/HERV-K as well as of other human elements in disease and in maintaining genome plasticity are illustrated.