The seroprevalence of neutralizing antibodies against the adeno-associated virus capsids in Japanese hemophiliacs
Yuji Kashiwakura, Nemekhbayar Baatartsogt, Shoji Yamazaki, Azusa Nagao, Kagehiro Amano, Nobuaki Suzuki, Tadashi Matsushita, Akihiro Sawada, Satoshi Higasa, Naoya Yamasaki, Teruhisa Fujii, Taemi Ogura, Hideyuki Takedani, Masashi Taki, Takeshi Matsumoto, Jun Yamanouchi, Michio Sakai, Masako Nishikawa, Yutaka Yatomi, Koji Yada, Keiji Nogami, Ryota Watano, Takafumi Hiramoto, Morisada Hayakawa, Nobuhiko Kamoshita, Akihiro Kume, Hiroaki Mizukami, Shizukiyo Ishikawa, Yoichi Sakata, Tsukasa Ohmori
Abstract
, was mostly found in people in their 60s or of older age. The multivariate analysis suggested that "60s or older age" was the only independent factor related to the high titer of NAbs. Conversely, a large proportion of younger hemophiliacs was seronegative, rendering them eligible for AAV-mediated gene therapy in Japan. Compared with our previous study, the peak of seroprevalences has shifted to older populations, indicating that natural AAV exposure in the elderly occurred in their youth but not during the last decade.