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Inherited ciHHV-6 increases risk of developing acute GVHD and CMV in transplant patients.

In All, Cancer, ciHHV-6, GVHD by Kristin Loomis

A higher prevalence of inherited virus was found in patients

Investigators at Fred Hutchinson Cancer Center determined that transplant patients with inherited ciHHV-6 were twice as likely to develop acute graft vs host disease and three times more likely to develop high level CMV viremia. Transplant patients were also significantly more likely to have inherited ciHHV-6 than donors.

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HSCT patients with HHV-6 reactivation have significantly worse survival rates and higher rates of acute GVHD

In All, GVHD, Transplant Complications by Kristin Loomis

A group from Sapporo Medical University studied 105 post HSCT patients and determined that 7 developed CNS dysfunction in the first 42 days after transplant. Six out of the 7 were positive for HHV-6, but none of the other 12 pathogens tested. Four or 3.8% of the population were diagnosed with HHV-6 encephalitis.