Individual genotype influences effectiveness of HIV vaccine
8-Aug-2014
Almost 40 million people worldwide live with HIV/AIDS. Despite great effort, HIV-1 vaccine development has been challenging.
A recent HIV vaccine trial, known as RV144, revealed that a combination of 2 vaccines protected some individuals from HIV infection.
Individuals in the trial that made antibodies that bound to a specific region of the HIV envelope protein had a decreased risk of
HIV infection. A new study in the Journal of Clinical Investigation reveals that an individual's genotype correlates with
their ability to develop immunity to HIV in response to vaccination. Sue Li and colleagues at the Fred Hutchinson
Cancer Research Center sequenced genes in RV144 participants that are involved in antibody production. The
authors identified single nucleotide variations in genes that encode antibody receptors, which are
important for protective immunity. They found that the majority of individuals with specific
variants of the FCGR2C gene were protected from HIV infection after vaccination whereas a
different form of FCGR2C was not associated with protection. Their study provides
important insight into the variable response of individuals in the RV144 trial.
TITLE:
FCGR2C polymorphisms associate with HIV-1 vaccine protection in RV144 trial
AUTHOR CONTACT:
Sue Li
Fred Hutchinson Cancer Research Center, Seattle, WA, USA
Phone: 206 667-7066; Fax: 206 667-4378; E-mail: sli@fhcrc.org
View this article at: http://www.jci.org/articles/view/75539?key=9ad7119f678702d62a71
Source: http://www.eurekalert.org/pub_releases/2014-08/joci-igi080714.php
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