About the Authors

Satoshi Kawano

Contributed equally to this work with: Satoshi Kawano, Alexandra R. Grassian

Affiliation Eisai Co., Ltd., Tsukuba, Ibaraki, Japan

Alexandra R. Grassian

Contributed equally to this work with: Satoshi Kawano, Alexandra R. Grassian

agrassian@epizyme.com (ARG); sribich@epizyme.com (SR)

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Masumi Tsuda

Affiliation Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan

Sarah K. Knutson

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Natalie M. Warholic

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Galina Kuznetsov

Affiliation Eisai Inc., Andover, Massachusetts, United States of America

Shanqin Xu

Affiliation Eisai Inc., Andover, Massachusetts, United States of America

Yonghong Xiao

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Roy M. Pollock

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Jesse S. Smith

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Kevin K. Kuntz

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Scott Ribich

agrassian@epizyme.com (ARG); sribich@epizyme.com (SR)

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Yukinori Minoshima

Affiliation Eisai Co., Ltd., Tsukuba, Ibaraki, Japan

Junji Matsui

Affiliation Eisai Co., Ltd., Tsukuba, Ibaraki, Japan

Robert A. Copeland

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Shinya Tanaka

Affiliation Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Hokkaido, Japan

Heike Keilhack

Affiliation Epizyme Inc., Cambridge, Massachusetts, United States of America

Competing Interests

ARG, SKK, NMW, YX, RP, JSS, KKK, SR, HK, and RAC are employees of, and/or hold equity in, Epizyme, Inc. SK, GK, SX, YM, and JM are employees of, and/or hold equity in, Eisai Co., Ltd or Eisai, Inc. Tazemetostat is in clinical development and the compound as well as its use in the treatment of cancer, including synovial sarcoma, is subject to several U.S. and international patents and patent applications, including, but not limited to, international PCT Application PCT/US2012/033648 filed April 13, 2012, and international PCT/US2014/061205, filed October 17, 2014. This does not alter the authors’ adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SK ARG MT SKK NMW GK SX YX RMP JSS KKK SR YM JM RAC ST HK. Performed the experiments: SK ARG MT SKK NMW GK SX. Analyzed the data: SK ARG MT SKK NMW GK SX YX RMP JSS KKK SR YM JM RAC ST HK. Wrote the paper: SK ARG SR RAC HK.