A VEGF receptor vaccine demonstrates preliminary efficacy in neurofibromatosis type 2

Ryota Tamura, Masato Fujioka, Yukina Morimoto, Kentaro Ohara, Kenzo Kosugi, Yumiko Oishi, Mizuto Sato, Ryo Ueda, Hirokazu Fujiwara, Shinobu Noji, Naoki Oishi, Kaoru Ogawa, Yutaka Kawakami, Takayuki Ohira, Kazunari Yoshida, Masahiro Toda

研究成果: Article査読

34 被引用数 (Scopus)


The anti-VEGF antibody bevacizumab has shown efficacy for the treatment of neurofibromatosis type 2 (NF2). Theoretically, vascular endothelial growth factor receptors (VEGFRs)-specific cytotoxic T lymphocytes (CTLs) can kill both tumor vessel cells and tumor cells expressing VEGFRs. Here we show an exploratory clinical study of VEGFRs peptide vaccine in seven patients with progressive NF2-derived schwannomas. Hearing improves in 2/5 assessable patients (40%) as determined by international guidelines, with increases in word recognition scores. Tumor volume reductions of ≥20% are observed in two patients, including one in which bevacizumab had not been effective. There are no severe adverse events related to the vaccine. Both VEGFR1-specific and VEGFR2-specific CTLs are induced in six patients. Surgery is performed after vaccination in two patients, and significant reductions in the expression of VEGFRs in schwannomas are observed. Therefore, this clinical immunotherapy study demonstrates the safety and preliminary efficacy of VEGFRs peptide vaccination in patients with NF2.

ジャーナルNature communications
出版ステータスPublished - 2019 12月 1

ASJC Scopus subject areas

  • 化学一般
  • 生化学、遺伝学、分子生物学一般
  • 物理学および天文学一般


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