Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA.|Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA.|Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA.|Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA.|Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA.|Department of Pharmaceutical Chemistry, University of California, San Francisco, San Francisco, CA, 94158, USA.|Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco, San Francisco, CA, 94158, USA.|Protagonist Therapeutics, Inc., 521 Cottonwood Drive, Suite 100, Milpitas, CA, 95035-74521, USA. m.smythe@protagonist-inc.com.