Randomized trials are warranted to evaluate if treating HHV-6B reactivation improves outcomes.
Large study from China identifies adverse outcomes associated with, and risk factors for, HHV-6 encephalitis in post-HSCT patients
Greatly increased risk of death, acute GVHD, transplant-associated microangiopathy found.
Febrile status epilepticus in infants with MRI-confirmed brain abnormalities linked to temporal lobe epilepsy later in life
Surprisingly, although HHV-6B has been linked to febrile seizures, febrile status epilepticus and temporal lobe epilepsy, the report contains no mention of the virus.
Co-infection of HHV-6A and EBV results in a 6.7 fold increased risk of developing multiple sclerosis
The increased risk occurred only in adults who were infected with EBV after their teenage years, and had elevated EBNA-1 antibodies.
Antibodies to HHV-6 and HHV-6 dUTPase are strong predictors of Long COVID
CRP and IgA antibodies to activin-A are also important predictors.
Biofire multiplex PCR assay accurately detects HHV-6 meningitis/encephalitis in immunocompromised adults
Utility of the assay in immunocompetent patients requires further study.
Could a specific polymorphism in HHV-6B partially explain the heritability of major depression?
Individuals carrying this polymorphism had a five-fold increased risk of depression and were more likely to have a family member with major depression.
Japanese study confirms cognitive problems from post-transplant HHV-6B reactivation
Those with the highest viral loads suffered deficits in verbal memory and reduced quality of life.
MS drug teriflunomide dramatically reduces antibody titers to EBV and HHV-6
Study results are consistent with a pathogenetic role for viruses in relapsing-remitting MS.
Growing evidence of rare HHV-7 associated encephalitis and seizures in the immunocompetent
The clinical picture is very similar to HHV-6B encephalitis.
New Evidence that HHV-6A, like EBV, May Trigger Some Cases of Multiple Sclerosis (MS)
Sera drawn before vs. after onset of MS find seropositivity for HHV-6A more likely in MS.
Meta-Analysis links EBV, HHV-6 and VZV to multiple sclerosis
Study pools data from nearly 30,000 people with MS.
Higher HHV-6 viral load in oral mucosa cells in people with major depression
Combination of viral load and presence of specific polymorphism in the TNF-α gene associated with major depression.
Review of the theory that chronic viral infection of the brain can lead to depression
Role of several viruses, including HHV-6A/B, in stimulating low-grade neuroinflammation.
HHV-6 DNA load in whole blood and elevated EBNA antibodies predict progression in first clinical episodes of demyelination in multiple sclerosis
Patients with viral loads suggestive of iciHHV-6 had the greatest risk of developing demyelinating disease.